CN105418875A - Polyurethane mixed component applied to slow-rebound damping pad and preparation method of polyurethane mixed component - Google Patents
Polyurethane mixed component applied to slow-rebound damping pad and preparation method of polyurethane mixed component Download PDFInfo
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4072—Mixtures of compounds of group C08G18/63 with other macromolecular compounds
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4808—Mixtures of two or more polyetherdiols
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/63—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
- C08G18/632—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers onto polyethers
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/6552—Compounds of group C08G18/63
- C08G18/6558—Compounds of group C08G18/63 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6564—Compounds of group C08G18/63 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/143—Halogen containing compounds
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- C08G2101/00—Manufacture of cellular products
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/0066—≥ 150kg/m3
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- C—CHEMISTRY; METALLURGY
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- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2350/00—Acoustic or vibration damping material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
Abstract
The invention relates to a polyurethane mixed component applied to a slow-rebound damping pad and a preparation method of the polyurethane mixed component and belongs to the technical field of polyurethane application. The polyurethane mixed component applied to the slow-rebound damping pad is composed of a component A and a component B, and the weight ratio of the component A to the component B is 100 (50-60); the component A is composed of polyether polyol A, polypolyols, a cross-linking agent, a chain extender, a foam stabilizer, a catalyst and a foaming agent; the component B is composed of polyether polyol B and isocyanate. The pad made of the polyurethane mixed component is good in rebound effect, and the shock absorption capacity and the hand feeling are improved; the invention further provides a preparation method which is simple, easy to conduct and capable of saving energy and protecting the environment.
Description
Technical field
The present invention relates to and be a kind ofly applied to polyurethane combined material of low resilience vibration damping cushion block and preparation method thereof, belong to urethane applied technical field.
Background technology
Along with the development of modern industry, the high-power machinery of vibration tool and generation judder is on the increase, and the hazard of vibration that various mechanical means is brought in running and working process is also day by day serious.The broadband random excitation that vibration & noise brings can cause many resonance peak responses of structure, directly affects the normal work of electron device, instrument and instrument.
The application of vibration damping cushion block mainly utilizes the distinctive visco-elasticity of macromolecular material, in vibration processes, is heat energy by kinetic transformation, thus reaches the object reducing amplitude.Due to urethane itself there is a large amount of hydrogen bonds, micro phase separation structure to a certain degree has obvious advantage to reaching this purpose, polyurethane material obtains investigation and application widely.
Describe a kind of shock-absorbing slow-elastic rubber in patent CN201410292011.1, rubber carries out mixing banburying generation organic foam material by adding PVC, and this organic foam material has good low resilience and shock-absorbing performance.This method improves the one of rubber, but making processes is comparatively complicated, and energy consumption is higher.
Describe a kind of preparation method of vibration-damping sheet in patent CN201380012491.5, its Main Components contains the vibration damping layer of more than rubber 100 mass parts and carbon black 30 mass parts.Made vibration-damping sheet density and hardness setting range is narrower, and appearance color is single.
Summary of the invention
The object of this invention is to provide a kind of polyurethane combined material being applied to low resilience vibration damping cushion block, the cushion block low resilience made by it is effective, and vibration absorption ability and feel are improved; Invention also provides preparation method that is simple, energy-conserving and environment-protective.
The polyurethane combined material being applied to low resilience vibration damping cushion block of the present invention, is made up of first component and second component, and the weight percent of first, second component is 100:50 ~ 60, wherein:
(1) first component is made up of the raw material of following weight percentage:
(2) second component is made up of the raw material of following weight percentage:
Polyether glycol B10 ~ 20%
Isocyanic ester 80 ~ 90%;
Described polyether glycol A is the mixture of common polyether polyvalent alcohol and slow-rebound polyether polyol, the mixture that common polyether polyvalent alcohol is functionality is 2-3, number-average molecular weight is the polyether glycol of 400-2000 and 4000-8000, preferred EP-3600, ED-28, DL-400 (Shandong Lanxing Dongda Chemical Co., Ltd); The functionality of slow-rebound polyether polyol is 3-4, and number-average molecular weight is 500-2000, and preferred functionality is 3, SR-308 that number-average molecular weight is 500-1000 (can Leah polyvalent alcohol company limited).
Described polymer polyatomic alcohol is the polyether glycol of styrene-acrylonitrile modification, preferred CHP-H45 (Jiangsu Changhua Polyurethane Technology Co., Ltd.).
Described linking agent is one or more in diethanolamine, trolamine, glycerine or TriMethylolPropane(TMP), is preferably glycerine or diethanolamine.
Described chainextender is one or more in butyleneglycol, ethylene glycol or Diethylene Glycol, is preferably Diethylene Glycol.
Described suds-stabilizing agent is organosilyl surface activator, is preferably the AK-7703 (commercially available prod) of DC193 (commercially available prod) or Shanghai dolantin Shi Chuan company limited
Described catalyzer is triethylenediamine (A-33), postpone in equilibrium catalyst (C-225), two (dimethylaminoethyl) ether or dibutyl tin laurate one or more.
Described whipping agent is water or dichloro one fluoroethane, is preferably dichloro one fluoroethane (HCFC-141B).
Described polyether glycol B is content >=75% of polyether polyol with high activity, its primary hydroxyl, and functionality is 2-3, and number-average molecular weight is 5000-6000.
Described isocyanic ester is the mixture of diphenylmethanediisocyanate and polyphenyl polymethylene polyisocyanates.
Described diphenylmethanediisocyanate is the mixture of 4,4-diphenylmethanediisocyanate and 2,4-diphenylmethanediisocyanate, and mixing quality is than being 50-60:40-50.
It is (commercially available that diphenylmethanediisocyanate is preferably MDI-100,4,4-diphenylmethanediisocyanate more than 99%, Yantai Wanhua Polyurethane Co., Ltd), MDI-50 is (commercially available, the mixture of 4,4-diphenylmethanediisocyanate and 2,4-diphenylmethanediisocyanate, Yantai Wanhua Polyurethane Co., Ltd) or 44C (commercially available, Bayer A.G) in one or more; The mixture of polyphenyl polymethylene polyisocyanates is preferably PM200 (commercially available, Yantai Wanhua Polyurethane Co., Ltd) or M20S (commercially available, Shanghai BASF Co., Ltd).
The described preparation method being applied to the polyurethane combined material of low resilience vibration damping cushion block, comprises the following steps:
(1) first component is prepared: polyether glycol A, polymer polyatomic alcohol, linking agent, chainextender, suds-stabilizing agent, catalyzer and whipping agent are dropped in reactor and stir 20 ~ 30min, discharging also seals preservation;
(2) second component is prepared: put in reactor by polyether glycol B, stir and be warming up to 100-120 DEG C, then vacuum tightness is regulated, dehydration 1h, be cooled to 30-40 DEG C, finally add isocyanic ester, be warmed up to 60-70 DEG C, be cooled to 40-50 DEG C after insulation 30-40min, discharging also seals preservation;
(3) when using, first, second component is mixed according to corresponding proportion, i.e. the obtained polyurethane combined material being applied to low resilience vibration damping cushion block.
The low resilience vibration damping cushion block adopting described premixed systems to make, its density is 0.3-0.9g/cm
3, hardness is 30A-70A, has appropriate low resilience effect and damping preferably.
Made cushion block can be applicable to bottom the component or instrument that precision instrument needs to do vibration damping process, reduces vibration and noise can ensure that instrument normally uses.
The present invention has following beneficial effect:
(1) the low resilience vibration damping cushion block adopting described premixed systems to make, has low resilience effect, substantially increases its vibration absorption ability and feel;
(2) the low resilience vibration damping cushion block adopting described premixed systems to make, density is 0.3-0.9g/cm
3, hardness is that 30A-70A, the whole scope of Color tunable are large, the mill base of different colours can be added as requested, meet the individual demand of application;
(3) preparation method being applied to the polyurethane combined material of low resilience vibration damping cushion block described in, not only energy-conserving and environment-protective, and also simple, once namely plastic, do not need later stage sulfuration.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but it does not limit enforcement of the present invention.
Embodiment 1
(1) first component is prepared: take polyether glycol A (EP-330NG respectively, Shandong Lanxing Dongda Chemical Co., Ltd) 50kg, (SR-308, can Leah polyvalent alcohol company limited) 40kg, CHP-H45 (Jiangsu Changhua Polyurethane Technology Co., Ltd.) 10kg.Ethylene glycol 6kg, organosilyl surface activator DC193 (aerification chemical product company limited of the U.S.) 0.5kg, AK-7703 (aerification chemical product company limited of the U.S.) 0.5kg, tertiary amine catalyst A-33 and deferred class catalyzer C-225 is respectively 1.5kg and 1.5kg, be placed in reactor and stir 20min, after mixing, discharging, sealing is preserved.
(2) second component is prepared: take polyether glycol B (EP3600, Shandong Lanxing Dongda Chemical Co., Ltd) 10kg, temperature remains on 50-60 DEG C and adds, MDI-50 is (commercially available, Yantai Wanhua Polyurethane Co., Ltd) 50kg, MDI-100 is (commercially available, Yantai Wanhua Polyurethane Co., Ltd) 10kg, M20S (commercially available, Shanghai BASF Co., Ltd) 30kg, slowly be warming up to 75 DEG C, insulation reaction 50 minutes, sampling detects, the mass content 28.76% of-NCO, be cooled to 40 DEG C of dischargings, sealing is preserved.
(3) when using, by first, second component according to weight ratio 10:60 mixing, i.e. the obtained polyurethane combined material being applied to low resilience vibration damping cushion block.
Embodiment 2
(1) first component is prepared: take polyether glycol A (ED-28 respectively, Shandong Lanxing Dongda Chemical Co., Ltd) 55kg, (SR-308, can Leah polyvalent alcohol company limited) 20kg, (DL-400, Shandong Lanxing Dongda Chemical Co., Ltd) 20kg, Diethylene Glycol 6kg, organosilyl surface activator AK-7703 (aerification chemical product company limited of the U.S.) 0.5kg, tertiary amine catalyst A-33 and deferred class catalyzer C-225 is respectively 1kg and 1kg, blowing agent H CFC-141B2kg, be placed in reactor and stir 30min, after mixing, discharging, sealing is preserved.
(2) prepare second component: take polyether glycol B (ED28, Shandong Lanxing Dongda Chemical Co., Ltd) 15kg, temperature remains on 50-60 DEG C and adds, MDI-50 is (commercially available, Yantai Wanhua Polyurethane Co., Ltd) 60kg, PM200 (commercially available, Wan Hua Chemical Co., Ltd.) 25kg, slowly be warming up to 70 DEG C, insulation reaction 40 minutes, sampling detects, the mass content 27.5% ± 0.2 of-NCO, be cooled to 40 DEG C of dischargings, sealing is preserved.
(3) when using, by first, second component according to weight ratio 10:55 mixing, i.e. the obtained polyurethane combined material being applied to low resilience vibration damping cushion block.
Embodiment 3
(1) first component is prepared: take polyether glycol A (ED-28 respectively, Shandong Lanxing Dongda Chemical Co., Ltd) 45kg, (SR-308, can Leah polyvalent alcohol company limited 25kg, CHP-H45 (Jiangsu Changhua Polyurethane Technology Co., Ltd.) 10kg, glycerine 3kg, organosilyl surface activator (aerification chemical product company limited of the U.S.) AK-7703 (aerification chemical product company limited of the U.S.) 1kg, tertiary amine catalyst A-33 and deferred class catalyzer C-225 is respectively 1.5kg and 1.5kg, whipping agent water 5kg, be placed in reactor and stir 25min, after mixing, discharging, sealing is preserved.
(2) prepare second component: take polyether glycol B (ED-28, Shandong Lanxing Dongda Chemical Co., Ltd) 20kg, temperature remains on 50-60 DEG C and adds, MDI-50 is (commercially available, Yantai Wanhua Polyurethane Co., Ltd) 50kg, M20S (commercially available, Shanghai BASF Co., Ltd) 30kg, slowly be warming up to 75 DEG C, insulation reaction 60 minutes, sampling detects, the mass content 25.6% ± 0.2 of-NCO, be cooled to 40 DEG C of dischargings, sealing is preserved.
(3) when using, by first, second component according to weight ratio 10:50 mixing, i.e. the obtained polyurethane combined material being applied to low resilience vibration damping cushion block.
The low resilience vibration damping cushion block that table 1 adopts the polyurethane combined material of embodiment 1-3 gained to prepare
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Natural rubber |
| Density (g/cm 3) | 0.9 | 0.4 | 0.3 | 0.95 |
| Hardness (A) | 70 | 50 | 30 | 70 |
| Rebound degree (-10 DEG C) | 5％ | 4％ | 3.5％ | 90％ |
| Rebound degree (50 DEG C) | 3％ | 2.5％ | 2％ | 85％ |
Remarks:
(1) size of rebound degree cushion block is detected in table: 20mm × 10mm × 2mm;
(2) Shore durometer is selected in hardness test;
(3) rebound degree selects rubber resilience determinator (High Speed Rail Testing Instruments company limited, model: GT-7042-RE, sequence number: 2010-01383).
Embodiment 1 is foaming not, and embodiment 2 is with 3 foaming but density is different, thus adjustable range is large, and the corresponding different hardness of different density, 3 embodiments have adjusted different hardness.
Claims (10)
1. be applied to a polyurethane combined material for low resilience vibration damping cushion block, it is characterized in that: be made up of first component and second component, the weight percent of first, second component is 100:50 ~ 60, wherein:
(1) first component is made up of the raw material of following weight percentage:
(2) second component is made up of the raw material of following weight percentage:
Polyether glycol B10 ~ 20%
Isocyanic ester 80 ~ 90%;
Described polyether glycol A is the mixture of common polyether polyvalent alcohol and slow-rebound polyether polyol, the mixture that common polyether polyvalent alcohol is functionality is 2-3, number-average molecular weight is the polyether glycol of 400-2000 and 4000-8000; The functionality of slow-rebound polyether polyol is 3-4, and number-average molecular weight is 500-2000.
2. the polyurethane combined material being applied to low resilience vibration damping cushion block according to claim 1, is characterized in that: polymer polyatomic alcohol is the polyether glycol of styrene-acrylonitrile modification.
3. the polyurethane combined material being applied to low resilience vibration damping cushion block according to claim 1, is characterized in that: linking agent is one or more in diethanolamine, trolamine, glycerine or TriMethylolPropane(TMP).
4. the polyurethane combined material being applied to low resilience vibration damping cushion block according to claim 1, is characterized in that: chainextender is one or more in butyleneglycol, ethylene glycol or Diethylene Glycol.
5. the polyurethane combined material being applied to low resilience vibration damping cushion block according to claim 1, is characterized in that: catalyzer is triethylenediamine, postpone in equilibrium catalyst, two (dimethylaminoethyl) ether or dibutyl tin laurate one or more.
6. the polyurethane combined material being applied to low resilience vibration damping cushion block according to claim 1, is characterized in that: whipping agent is water or dichloro one fluoroethane.
7. the polyurethane combined material being applied to low resilience vibration damping cushion block according to claim 1, is characterized in that: polyether glycol B is content >=75% of polyether polyol with high activity, its primary hydroxyl, and functionality is 2-3, and number-average molecular weight is 3000-6000.
8. the polyurethane combined material being applied to low resilience vibration damping cushion block according to claim 1, is characterized in that: isocyanic ester is the mixture of diphenylmethanediisocyanate and polyphenyl polymethylene polyisocyanates.
9. the polyurethane combined material being applied to low resilience vibration damping cushion block according to claim 8, it is characterized in that: diphenylmethanediisocyanate is 4, the mixture of 4-diphenylmethanediisocyanate and 2,4-diphenylmethanediisocyanate, mixing quality is than being 50-60:40-50.
10. the arbitrary described preparation method being applied to the polyurethane combined material of low resilience vibration damping cushion block of claim 1-9, is characterized in that comprising the following steps:
(1) first component is prepared: polyether glycol A, polymer polyatomic alcohol, linking agent, chainextender, suds-stabilizing agent, catalyzer and whipping agent are dropped in reactor and stir 20 ~ 30min, discharging also seals preservation;
(2) second component is prepared: put in reactor by polyether glycol B, stir and be warming up to 100-120 DEG C, then vacuum tightness is regulated, dehydration 1h, be cooled to 30-40 DEG C, finally add isocyanic ester, be warmed up to 70-75 DEG C, be cooled to 40-50 DEG C after insulation 40-60min, discharging also seals preservation;
(3) when using, first, second component is mixed according to corresponding proportion, i.e. the obtained polyurethane combined material being applied to low resilience vibration damping cushion block.
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| CN107325247A (en) * | 2017-07-04 | 2017-11-07 | 扬中市天正合成材料研究中心 | A kind of secondary battery jar assembly polyurethane rings environment friendly flame-retardant expanded material and preparation method |
| CN107987240A (en) * | 2017-12-14 | 2018-05-04 | 山东诺威体育产业有限公司 | Protector urethane composition and preparation method thereof |
| CN109104864A (en) * | 2016-03-29 | 2018-12-28 | 陶氏环球技术有限责任公司 | Semi-rigid urethane foam and its manufacturing method |
| CN109518713A (en) * | 2018-11-09 | 2019-03-26 | 宿州典跃新型建筑材料有限公司 | A kind of construction method of vibration absorbing low noise shake table ground |
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| CN114479048A (en) * | 2021-12-22 | 2022-05-13 | 山东一诺威新材料有限公司 | Preparation method of polymer-based rigid foam polyether polyol |
| CN114479745A (en) * | 2022-01-20 | 2022-05-13 | 重庆美心春风门业有限公司 | Polyurethane adhesive and preparation method and application thereof |
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| CN109104864A (en) * | 2016-03-29 | 2018-12-28 | 陶氏环球技术有限责任公司 | Semi-rigid urethane foam and its manufacturing method |
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| CN114479048A (en) * | 2021-12-22 | 2022-05-13 | 山东一诺威新材料有限公司 | Preparation method of polymer-based rigid foam polyether polyol |
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