CN104231153A - Terpolymer and preparation method thereof, spacer material and touch screen formed by terpolymer and producing methods of touch screen - Google Patents

Terpolymer and preparation method thereof, spacer material and touch screen formed by terpolymer and producing methods of touch screen Download PDF

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Publication number
CN104231153A
CN104231153A CN201410409394.6A CN201410409394A CN104231153A CN 104231153 A CN104231153 A CN 104231153A CN 201410409394 A CN201410409394 A CN 201410409394A CN 104231153 A CN104231153 A CN 104231153A
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Prior art keywords
terpolymer
acrylate
touch
benzene oxygen
screen
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CN201410409394.6A
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CN104231153B (en
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武晓娟
谢建云
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BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
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Abstract

Embodiments of the invention provide a terpolymer and a preparation method thereof, a spacer material and a touch screen formed by the terpolymer and a producing method of the touch screen, belonging to the field of display, and aiming at avoiding the occurrence of an undesirable water ripple phenomenon when the touch screen is pressed. The terpolymer is prepared through carrying out thermal polymerization on 2-phenoxyethyl acrylate, methacrylate or acrylate, and 2-hydroxyethyl methacrylate in the presence of a crosslinking agent and an initiator; and the terpolymer is deformed when the terpolymer is pressed or the temperature is changed, and restored to the original shape when the temperature rises to the glass-transition temperature thereof again. The terpolymer disclosed by the invention can be applied to the preparation of liquid crystal display touch screens.

Description

A kind of terpolymer and preparation method thereof, the spacer material formed by this terpolymer, touch-screen and preparation method thereof
Technical field
The present invention relates to display field, particularly relate to a kind of terpolymer and preparation method thereof, the spacer material formed by this terpolymer, touch-screen and preparation method thereof.
Background technology
Liquid-crystal display is in an increasingly wide range of applications in the modern life, as mobile phone display screen, Note Book display screen, GPS display screen, LCD TV display screen etc.Touch-control liquid crystal display screen has the features such as easy to use, outward appearance is beautiful, sealing structure, speed of response are fast, is widely used at present in field of liquid crystal display (especially mobile phone, panel computer etc.).
Touch-screen is generally obtained by glue laminating technique by touch-control template and liquid crystal display, but when pressing with finger the touch-screen that this technique makes, can produce the phenomenon that pressing water ripples are bad.This is mainly due to when attaching liquid crystal display in touch-control template, can plastic deformation be there is in traditional spacer material, and make there is certain distance between the primary divider in liquid crystal display and array substrate, and when being again pressed, because this deformation can not recover voluntarily, the liquid crystal of area pressed will be spread to periphery, thus it is bad to produce pressing water ripples.Based on above-mentioned analysis, provide a kind of suitable spacer material, to avoid the phenomenon producing water ripples bad when pressing touch-screen to be the important topic that those skilled in the art face.
Summary of the invention
Embodiments provide a kind of terpolymer and preparation method thereof, the spacer material formed by this terpolymer, touch-screen and preparation method thereof, to avoid producing the bad phenomenon of water ripples when pressing touch-screen.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of terpolymer, described terpolymer is obtained by heat polymerization under the effect of linking agent and initiator by 2-benzene oxygen ethyl propylene acid esters, methacrylic ester or acrylate, 2-benzene oxygen ethylmethyl acrylate;
Described terpolymer be under pressure or temperature change time there is deformation, and return to original shape when temperature rises to more than its second-order transition temperature again.
Optionally, the mol ratio of described 2-benzene oxygen ethyl propylene acid esters, methacrylic ester or acrylate, 2-benzene oxygen ethylmethyl acrylate and linking agent is:
2-benzene oxygen ethyl propylene acid esters: 62.4-77.6%;
Methacrylic ester or acrylate: 15.6-19.4%;
2-benzene oxygen ethylmethyl acrylate: 1-20%;
Linking agent: 2.0%.
Optionally, the addition of described initiator is 0.5% of described terpolymer total mass.
Optionally, when the long alkyl chains of described acrylate or described methacrylate monomer and molar content increase, the second-order transition temperature of described terpolymer reduces.
Further, in long alkyl chains and molar content one timing of described acrylate or described methacrylate monomer, the second-order transition temperature of the terpolymer containing described acrylate is lower than the second-order transition temperature of the terpolymer containing described methacrylic ester.
Optionally, when the long alkyl chains of described acrylate or described methacrylate monomer and molar content increase, the shape of described terpolymer reduces time of recovery.
Further, in long alkyl chains and molar content one timing of described acrylate or described methacrylate monomer, the shape of the terpolymer containing described acrylate is less than the shape time of recovery of the terpolymer containing described methacrylic ester time of recovery.
Optionally, described linking agent is ethylene glycol dimethacrylate, and described initiator is Diisopropyl azodicarboxylate.
According to a preparation method for the terpolymer that technique scheme provides, comprising:
By 2-benzene oxygen ethyl propylene acid esters, acrylate or methacrylic ester, 2-benzene oxygen ethylmethyl acrylate, linking agent in molar ratio example mix, obtained reacting precursor;
In described reacting precursor, add initiator, stir and pass into nitrogen, at 70-80 DEG C, thermostatically heating 24 hours, obtains described terpolymer.
A kind of spacer material, comprises the terpolymer provided by technique scheme.
A making method for touch-screen, comprising:
The color membrane substrates of the spacer that spacer material array substrate and being provided with provided by technique scheme obtains, to box, obtains liquid crystal panel;
Described liquid crystal panel and contact panel are attached, obtains stand-by touch-screen;
By described stand-by touch-screen with the heating temperatures 5-30 second higher than terpolymer second-order transition temperature, be then cooled to room temperature, obtain described touch-screen.
A kind of making method of the touch-screen provided according to technique scheme makes the touch-screen obtained.
Embodiments provide a kind of terpolymer and preparation method thereof, the spacer material formed by this terpolymer, touch-screen and preparation method thereof, wherein, the terpolymer provided by the application be under pressure or temperature change time can there is deformation, and can original shape be returned to when temperature rises to more than its second-order transition temperature again.Because this terpolymer has shape memory function, make spacer prepared therefrom can return to its original shape when being subject to the temperature higher than terpolymer second-order transition temperature, thus make the Contact of primary divider and array substrate good, reduce the trend that liquid crystal spreads to periphery, the phenomenon that can effectively avoid water ripples bad occurs.
Accompanying drawing explanation
The synthesis mechanism figure of the terpolymer that Fig. 1 provides for the embodiment of the present invention;
The second-order transition temperature of the terpolymer that Fig. 2 provides for the embodiment of the present invention is with the change curve of acrylate molar content and long alkyl chains;
The second-order transition temperature of the terpolymer that Fig. 3 provides for the embodiment of the present invention is with the change curve of methacrylic ester molar content and long alkyl chains;
Shape time of recovery of the terpolymer that Fig. 4 provides for the embodiment of the present invention is with the change curve of long alkyl chains;
The spacer that the utilization that Fig. 5 provides for the embodiment of the present invention is prepared by terpolymer prepares the principle schematic of touch-screen;
Fig. 6 is the water ripples design sketch that spacer material produces when pressing with finger the touch-screen with the spacer prepared by common material;
The water ripples design sketch that the spacer material when pressing with finger the touch-screen with the spacer prepared by terpolymer that Fig. 7 provides for embodiment of the present invention 1-3 produces.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with accompanying drawing, terpolymer that the embodiment of the present invention provides and preparation method thereof, the spacer material formed by this terpolymer, touch-screen and preparation method thereof are described in detail.
Embodiments provide a kind of terpolymer, described terpolymer is obtained by heat polymerization under the effect of linking agent and initiator by 2-benzene oxygen ethyl propylene acid esters, methacrylic ester or acrylate, 2-benzene oxygen ethylmethyl acrylate; Described terpolymer be under pressure or temperature change time there is deformation, and return to original shape when temperature rises to more than its second-order transition temperature again.
In the present embodiment, described terpolymer prepares primarily of 2-benzene oxygen ethyl propylene acid esters (EGPEA) (1), methacrylic ester (nMA) (2) or acrylate (nA) (3), 2-benzene oxygen ethylmethyl acrylate (EGPEMA) (4), and the structure of above-claimed cpd is as follows:
Wherein, in structural formula (2) and (3), n is the integer of 3-17.
The terpolymer prepared by heat polymerization by above-claimed cpd has shape memory function, its can be under pressure or temperature change time there is deformation, and return to original shape when temperature rises to more than its second-order transition temperature again.So-called shape memory refers to that the goods with original shape are after deformation is fixing, can the stimulation of change (as temperature, power, electromagnetism, solvent, pH value etc.) of perception respective environment, its mechanics parameter (as shape, position, strain etc.) is adjusted, thus can the state of presetting be returned to.
Embodiments provide a kind of terpolymer, its be under pressure or temperature change time can there is deformation, and can original shape be returned to when temperature rises to more than its second-order transition temperature again.Because this terpolymer has shape memory function, make spacer prepared therefrom can return to its original shape when being subject to the temperature higher than terpolymer second-order transition temperature, thus the Contact of primary divider and array substrate can be made good, reduce the trend that liquid crystal spreads to periphery, the phenomenon that can effectively avoid water ripples bad occurs.
In another preferred embodiment of the present invention, described linking agent is ethylene glycol dimethacrylate, and described initiator is Diisopropyl azodicarboxylate.Wherein, the concrete structure of linking agent ethylene glycol dimethacrylate (5) and initiator Diisopropyl azodicarboxylate (6) is as follows:
Be understandable that, the linking agent in the present embodiment and the selection of initiator are also not only confined to above-claimed cpd, can also be other the alternative compounds under the prerequisite not affecting above-mentioned reaction selected by those skilled in the art.
The synthesis mechanism figure of the terpolymer that Fig. 1 provides for the present embodiment.As shown in Figure 1, initiator initiation reaction under the condition of thermostatically heating generates initiator free radical and nitrogen, initiator free radical first reacts with 2-benzene oxygen ethyl propylene acid esters, generate intermediate A, intermediate A subsequently with methacrylic ester or acrylate and 2-benzene oxygen ethylmethyl acrylate polymerization reaction take place, generate polymerization intermediate B, and then generate the repeating unit C with polymerization intermediate B, repeating unit C generates final terpolymer under the effect of linking agent.Wherein, initiator itself only participates in initiation reaction, and does not participate in substantive reaction.
In another embodiment of the invention, the mol ratio of described 2-benzene oxygen ethyl propylene acid esters, methacrylic ester or acrylate, 2-benzene oxygen ethylmethyl acrylate and linking agent is: 2-benzene oxygen ethyl propylene acid esters: 62.4-77.6%; Methacrylic ester or acrylate: 15.6-19.4%; 2-benzene oxygen ethylmethyl acrylate: 1-20%; Linking agent: 2.0%.Within the scope of aforementioned proportion, can make to react completely between compound, and in the effect of linking agent, generate the terpolymer of significant quantity.Preferably, the mol ratio of above-claimed cpd is: 2-benzene oxygen ethyl propylene acid esters: 66.4-74.4%; Methacrylic ester or acrylate: 16.6-18.6%; 2-benzene oxygen ethylmethyl acrylate: 5-15%; Linking agent: 2.0%.
In the preferred embodiment of the present invention, the addition of described initiator is 0.5% of described terpolymer total mass.The content of initiator is set as 0.5% of total mass can occur fully in initiation reaction, makes can react more fully between compound, thus generate the terpolymer of significant quantity.
For the polymer with shape memory function, when temperature of reaction is on or below its second-order transition temperature, can shape memory effect be there is in the polymer with shape memory function, and this transition temperature is generally second-order transition temperature (Tg) or the fusing point (Tm) of polymkeric substance, wherein, for chemically crosslinked type shape memory high molecule material, this shape memory transition temperature is the second-order transition temperature of multipolymer.The Tg of 2-benzene oxygen ethyl propylene acid esters/methacrylic ester or acrylate/2-benzene oxygen ethylmethyl acrylate terpolymer can by regulating the molar content of acrylate or methacrylic ester, long alkyl chains regulates.
Of the present invention enter in an embodiment, when the long alkyl chains of described acrylate or described methacrylate monomer and molar content increase, the second-order transition temperature of described terpolymer reduces.Long alkyl chains in monomer is longer, and the content of acrylate (nA) or methacrylic ester (nMA) is higher, and the Tg of terpolymer is lower.As shown in Figure 2, as n=3, along with the molar content of nA is increased to 20.0% from 5.0%, the Tg of terpolymer is reduced to 11.8 DEG C from 16.2 DEG C; When the molar content of nA is fixed as 10.0%, along with the increase of long alkyl chains, when n increases to 17 from 3, the Tg of terpolymer is reduced to 9.9 DEG C from 15.8 DEG C.As shown in Figure 3, as n=3, along with the molar content of nMA is increased to 20.0% from 5.0%, the Tg of terpolymer is reduced to 14.2 DEG C from 17.2 DEG C; When the molar content of nMA is fixed as 5.0%, along with the increase of long alkyl chains, when n increases to 17 from 3, the Tg of terpolymer is reduced to 15.3 DEG C from 17.2 DEG C.Enter in an embodiment at above-described embodiment, in long alkyl chains and molar content one timing of described acrylate or described methacrylate monomer, the second-order transition temperature of the terpolymer containing described acrylate is lower than the second-order transition temperature of the terpolymer containing described methacrylic ester.
In addition, shape time of recovery of 2-benzene oxygen ethyl propylene acid esters/methacrylic ester or acrylate/2-benzene oxygen ethylmethyl acrylate terpolymer also can by regulating the molar content of acrylate or methacrylic ester, long alkyl chains regulates.
In another embodiment of the present invention, when the long alkyl chains of described acrylate or described methacrylate monomer and molar content increase, the shape of described terpolymer reduces time of recovery.Along with monomer nA or the increase of nMA content and the increase of long alkyl chains, the shape of terpolymer reduces time of recovery gradually.Fig. 4 is nA or nMA molar content when being 20.0%, and size is the change curve that the terpolymer of the 10mm × 10mm × 1mm shape when 37 DEG C of heating increases with long alkyl chains time of recovery.When n increases to 17 from 3, the shape containing the terpolymer of nA reduced to 6 seconds from 14 seconds time of recovery; Shape containing the terpolymer of nMA reduced to 8 seconds from 15 seconds time of recovery.Of the present invention enter in an embodiment, in long alkyl chains and molar content one timing of described acrylate or described methacrylate monomer, the shape of the terpolymer containing described acrylate is less than the shape time of recovery of the terpolymer containing described methacrylic ester time of recovery.
The embodiment of the present invention additionally provides the preparation method of the terpolymer that a kind of above-described embodiment provides, and comprising:
S1: by 2-benzene oxygen ethyl propylene acid esters, acrylate or methacrylic ester, 2-benzene oxygen ethylmethyl acrylate, linking agent in molar ratio example mix, obtained reacting precursor.
In this step, the above-claimed cpd taking appropriate mol ratio mixes, and wherein, mol ratio is followed successively by: 2-benzene oxygen ethyl propylene acid esters: 62.4-77.6%; Methacrylic ester or acrylate: 15.6-19.4%; 2-benzene oxygen ethylmethyl acrylate: 1-20%; Linking agent: 2.0%, to be mixed evenly after, can reacting precursor be obtained.
S2: add initiator in described reacting precursor, stirs and passes into nitrogen, and at 70-80 DEG C, thermostatically heating 24 hours, obtains described terpolymer.
In this step, initiator is added in described reacting precursor, and thermostatically heating reacts to make initiator self for 24 hours at 70-80 DEG C, adds nitrogen to get rid of the oxygen in reaction system in reaction system, thus avoid initiator free radical generation oxidizing reaction.
Embodiments provide a kind of preparation method of terpolymer, wherein, described terpolymer is obtained by heat polymerization under the effect of linking agent and initiator, and the terpolymer obtained thus can return to its original shape when being subject to the temperature higher than terpolymer second-order transition temperature.This reaction simply, is easily applicable to suitability for industrialized production, and described terpolymer wide material sources, cheap, can effectively save production cost.
The embodiment of the present invention additionally provides a kind of spacer material, comprises the terpolymer provided by above-described embodiment.Embodiments provide a kind of spacer material, described spacer material includes the terpolymer that the embodiment of the present invention provides, because terpolymer can return to its original shape when being subject to the temperature higher than terpolymer second-order transition temperature, make the spacer especially prepared also can return to its original shape when being subject to the temperature higher than terpolymer second-order transition temperature, bad and water ripples that are that cause the are bad phenomenon of contacting with array substrate can effectively avoiding occurring because of spacer deformation.
The embodiment of the present invention additionally provides a kind of making method of touch-screen, comprising:
M1: the color membrane substrates of the spacer that spacer material array substrate and being provided with provided by above-described embodiment obtains, to box, obtains liquid crystal panel;
M2: described liquid crystal panel and contact panel are attached, obtains stand-by touch-screen;
M3: by described stand-by touch-screen with the heating temperatures 5-30 second higher than terpolymer second-order transition temperature, be then cooled to room temperature, obtain described touch-screen.
Embodiments provide a kind of making method of touch-screen, in the method, in M1-M2 step, except used spacer is except the spacer material provided by the embodiment of the present invention obtains, all the other steps method known all known to those skilled in the art, so repeat no more herein.Here be noted that, because the spacer used in the present embodiment is that the spacer material provided by the embodiment of the present invention obtains, so also need to carry out heat temperature raising to it after obtained stand-by touch-screen, with make spacer can return to when temperature rises to more than terpolymer second-order transition temperature again liquid crystal display to box after intrinsic spacer shape.So in M3 step to stand-by touch-screen with the heating temperatures higher than terpolymer second-order transition temperature, wherein, heat-up time need not be long, only needs 5-30 second, preferred 10-15 second, and spacer can recover deformation.
It should be noted that, the heat-up time for stand-by touch-screen can be regulated by the shape time of recovery of acrylate or methacrylic ester, Heating temperature.Of the present invention enter in an embodiment, the shape of described acrylate or methacrylic ester is shorter for time of recovery, and required heat-up time is shorter; The Heating temperature of described acrylate or methacrylic ester is higher, and required heat-up time is shorter; Vice versa.
The spacer that the utilization that Fig. 5 provides for the embodiment of the present invention is prepared by terpolymer prepares the principle schematic of touch-screen.Wherein 1-glass substrate; 2-array substrate up-protective layer, TFT device on 3-array substrate, 4-liquid crystal molecule; OC flat bed on the color film of 5-; RGB resin on the color film of 6-, 7-primary divider, the secondary spacer of 8-; 9-sealed plastic box; the black matrix of 10-, 11-pastes post-heating temperature T2 to sealed plastic box solidification value T1,12-liquid crystal display screen during box.Use 2-benzene oxygen ethyl propylene acid esters/methacrylic ester or acrylate/2-benzene oxygen ethylmethyl acrylate terpolymer prepare the spacer on color membrane substrates, and after completing, spacer height is L1, as shown in Fig. 5 (a); When color membrane substrates and array substrate vacuum are to box, the sealed plastic box that is heating and curing, primary divider produces deformation D1, and height reduces to L2 by L1, as shown in Fig. 5 (b); After being cooled to room temperature, this spacer shape is fixed, as shown in Fig. 5 (c); When attaching touch-control template on this liquid crystal display, liquid crystal display be subject to a certain size and action time longer pressure, in box, spacer produces plastic deformation, and spacer height reduces to L3 by L2, primary divider and array substrate is made to produce certain distance D2, as shown in Fig. 5 (d); Then, by this touch-screen in a certain heating temperatures for some time being greater than 2-benzene oxygen ethyl propylene acid esters/methacrylic ester or acrylate/2-benzene oxygen ethylmethyl acrylate terpolymer second-order transition temperature, because this terpolymer has shape memory function, spacer prepared therefrom can return to when being greater than its second-order transition temperature liquid crystal display to box after the spacer shape of fixing, namely spacer height reverts to L2 by L3, as shown in Fig. 5 (e); Be cooled to this spacer shape after room temperature, namely height L2 is fixed, as shown in Fig. 5 (f).
Embodiments provide a kind of making method of touch-screen, with existing touch-screen making method unlike, in the method, after stand-by ordinary method obtains touch-screen, also heat treated is carried out to it, its original shape can be returned to when being subject to the temperature higher than terpolymer second-order transition temperature to make the spacer arranged on color membrane substrates, thus primary divider is contacted with array substrate well, reduce the trend that liquid crystal spreads to periphery, occur with the phenomenon avoiding water ripples bad.
The making method embodiments providing a kind of touch-screen provided by the embodiment of the present invention makes the touch-screen obtained.In this touch-screen, the primary divider that color membrane substrates is arranged can contact well with array substrate, can reduce the trend that liquid crystal spreads to periphery, and the phenomenon advantageously avoiding water ripples bad occurs.
Below in conjunction with specific embodiment, terpolymer provided by the present invention and preparation method thereof, the spacer material formed by this terpolymer, touch-screen and preparation method thereof are described better.
Embodiment 1
A () mixes routine in molar ratio to monomer 2-benzene oxygen ethyl propylene acid esters, 2-benzene oxygen ethylmethyl acrylate, butyl acrylate, linking agent ethylene glycol dimethacrylate for 74.4mol%, 18.6mol%, 5.0mol%, 2.0mol%;
B () adds the initiator Diisopropyl azodicarboxylate that mass ratio is 0.5% in said mixture, be uniformly mixed, and pass into nitrogen with removing oxygen wherein simultaneously, at 70 DEG C, thermostatically heating reacts 24 hours, obtain terpolymer, the Tg of this multipolymer is 16.2 DEG C;
C () uses the terpolymer prepared in step (b) to make spacer on color membrane substrates;
D () has the array substrate of liquid crystal by dripping and is coated with the color membrane substrates of sealed plastic box mixture to box, and carry out ultraviolet polymerization and thermopolymerization, is then cooled to room temperature, makes liquid crystal panel;
E () applies photoresist material on contact panel, and be fixed on the obtained liquid crystal panel of step (d), carries out ultraviolet polymerization and photoresist material is solidified, obtain stand-by touch-screen;
F touch-screen 37 DEG C of heating 12 seconds, is then cooled to room temperature, obtains touch-screen by ().
Result is tested: press with finger touch-screen obtained in step (f), observes the water ripples effect that this touch-screen divider material produces.
Embodiment 2
A () mixes routine in molar ratio to monomer 2-benzene oxygen ethyl propylene acid esters, 2-benzene oxygen ethylmethyl acrylate, dodecyl acrylate, linking agent ethylene glycol dimethacrylate for 70.4mol%, 17.6mol%, 10.0mol%, 2.0mol%;
B () adds the initiator Diisopropyl azodicarboxylate that mass ratio is 0.5% in said mixture, be uniformly mixed, and pass into nitrogen with removing oxygen wherein simultaneously, at 75 DEG C, thermostatically heating reacts 24 hours, obtain terpolymer, the Tg of this multipolymer is 10.4 DEG C;
C () uses the terpolymer prepared in step (b) to make spacer on color membrane substrates;
D () has the array substrate of liquid crystal by dripping and is coated with the color membrane substrates of sealed plastic box mixture to box, and carry out ultraviolet polymerization and thermopolymerization, is then cooled to room temperature, makes liquid crystal panel;
E () applies photoresist material on contact panel, and be fixed on the obtained liquid crystal panel of step (d), carries out ultraviolet polymerization and makes adhesive curing, obtain stand-by touch-screen;
F touch-screen 30 DEG C of heating 10 seconds, is then cooled to room temperature, obtains touch-screen by ().
Result is tested: press with finger touch-screen obtained in step (f), observes the water ripples effect that this touch-screen divider material produces.
Embodiment 3
A () mixes routine in molar ratio to monomer 2-benzene oxygen ethyl propylene acid esters, 2-benzene oxygen ethylmethyl acrylate, dodecyl acrylate, linking agent ethylene glycol dimethacrylate for 66.4mol%, 16.6mol%, 15.0mol%, 2.0mol%;
B () adds the initiator Diisopropyl azodicarboxylate that mass ratio is 0.5% in said mixture, be uniformly mixed, and pass into nitrogen with removing oxygen wherein simultaneously, at 80 DEG C, thermostatically heating reacts 24 hours, obtain terpolymer, the Tg of this multipolymer is 9.8 DEG C;
C () uses the terpolymer prepared in step (b) to make spacer on color membrane substrates;
D () has the array substrate of liquid crystal by dripping and is coated with the color membrane substrates of sealed plastic box mixture to box, and carry out ultraviolet polymerization and thermopolymerization, is then cooled to room temperature, makes liquid crystal panel;
E () applies photoresist material on contact panel, and be fixed on the obtained liquid crystal panel of step (d), carries out ultraviolet polymerization and photoresist material is solidified, obtain stand-by touch-screen;
F touch-screen 30 DEG C of heating 8 seconds, is then cooled to room temperature, obtains touch-screen by ().
Result is tested: press with finger touch-screen obtained in step (f), observes the water ripples effect that this touch-screen divider material produces.
Observe in the touch-screen provided at embodiment 1-3, the water ripples effect that spacer material produces.Fig. 6 is the water ripples design sketch that spacer material produces when pressing with finger the touch-screen with the spacer prepared by common material; The water ripples design sketch that the spacer material when pressing with finger the touch-screen with the spacer prepared by terpolymer that Fig. 7 provides for embodiment of the present invention 1-3 produces.
Can be found out by Fig. 6 and Fig. 7, when pressing with finger the touch-screen with the spacer prepared by common material, due to after attaching touch-control template, certain distance is had between primary divider and array substrate, the liquid crystal of area pressed can spread to display screen peripheral, thus produce water ripples (as shown in Figure 6), and when pressing with finger the touch-screen with the spacer prepared by terpolymer, owing to heating touch-screen after attaching touch-control template, spacer has shape memory effect and returns to spacer height after box, distance is not had between primary divider and array substrate, the liquid crystal of area pressed can not spread as display screen peripheral, thus prevent the generation (as shown in Figure 7) of water ripples.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still in the protection domain of the invention.

Claims (12)

1. a terpolymer, is characterized in that, described terpolymer is obtained by heat polymerization under the effect of linking agent and initiator by 2-benzene oxygen ethyl propylene acid esters, methacrylic ester or acrylate, 2-benzene oxygen ethylmethyl acrylate;
Described terpolymer be under pressure or temperature change time there is deformation, and return to original shape when temperature rises to more than its second-order transition temperature again.
2. terpolymer according to claim 1, is characterized in that, the mol ratio of described 2-benzene oxygen ethyl propylene acid esters, methacrylic ester or acrylate, 2-benzene oxygen ethylmethyl acrylate and linking agent is:
2-benzene oxygen ethyl propylene acid esters: 62.4-77.6%;
Methacrylic ester or acrylate: 15.6-19.4%;
2-benzene oxygen ethylmethyl acrylate: 1-20%;
Linking agent: 2.0%.
3. terpolymer according to claim 1, is characterized in that, the addition of described initiator is 0.5% of described terpolymer total mass.
4. terpolymer according to claim 1, is characterized in that, when the long alkyl chains of described acrylate or described methacrylate monomer and molar content increase, the second-order transition temperature of described terpolymer reduces.
5. terpolymer according to claim 4, it is characterized in that, in long alkyl chains and molar content one timing of described acrylate or described methacrylate monomer, the second-order transition temperature of the terpolymer containing described acrylate is lower than the second-order transition temperature of the terpolymer containing described methacrylic ester.
6. terpolymer according to claim 1, is characterized in that, when the long alkyl chains of described acrylate or described methacrylate monomer and molar content increase, the shape of described terpolymer reduces time of recovery.
7. terpolymer according to claim 6, it is characterized in that, in long alkyl chains and molar content one timing of described acrylate or described methacrylate monomer, the shape of the terpolymer containing described acrylate is less than the shape time of recovery of the terpolymer containing described methacrylic ester time of recovery.
8. terpolymer according to claim 1, is characterized in that, described linking agent is ethylene glycol dimethacrylate, and described initiator is Diisopropyl azodicarboxylate.
9. a preparation method for the terpolymer as described in any one of claim 1-8, is characterized in that, comprising:
By 2-benzene oxygen ethyl propylene acid esters, acrylate or methacrylic ester, 2-benzene oxygen ethylmethyl acrylate, linking agent in molar ratio example mix, obtained reacting precursor;
In described reacting precursor, add initiator, stir and pass into nitrogen, at 70-80 DEG C, thermostatically heating 24 hours, obtains described terpolymer.
10. a spacer material, is characterized in that, comprises the terpolymer as described in any one of claim 1-8.
The making method of 11. 1 kinds of touch-screens, is characterized in that, comprising:
By array substrate and be provided with the color membrane substrates of the spacer obtained by spacer material according to claim 10 to box, obtain liquid crystal panel;
Described liquid crystal panel and contact panel are attached, obtains stand-by touch-screen;
By described stand-by touch-screen with the heating temperatures 5-30 second higher than terpolymer second-order transition temperature, be then cooled to room temperature, obtain described touch-screen.
The making method of 12. 1 kinds of touch-screens according to claim 11 makes the touch-screen obtained.
CN201410409394.6A 2014-08-19 2014-08-19 A kind of terpolymer and preparation method thereof, this terpolymer spacer material formed, touch screen and preparation method thereof Expired - Fee Related CN104231153B (en)

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