CN109232856A - The preparation method of high highly-elastic urethane elastomer thoroughly - Google Patents
The preparation method of high highly-elastic urethane elastomer thoroughly Download PDFInfo
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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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
- 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
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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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
- 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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- 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
- 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
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/724—Combination of aromatic polyisocyanates with (cyclo)aliphatic polyisocyanates
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
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Abstract
The present invention relates to a kind of preparation methods of high highly-elastic urethane elastomer, belong to polyurethane applied technical field.PTMG, HDO, catalyst and antioxidant are sealed than after mixing at room temperature, according to certain mass；PTMG reacts 2~3 hours with isocyanates at 80~85 DEG C, Zhen Kong Du≤- 0.095MPa, obtains the polyurethane prepolymer component that isocyano-content is 8.5~13.2%；Polymers compositions and the control of polyurethane prepolymer component are mixed at 60~80 DEG C, polymers compositions and polyurethane prepolymer component in 40~100:100 ratio after mixing, it is poured into 70~90 DEG C of mold, is opened within 30~45 minutes, obtain high saturating highly-elastic urethane elastomer.Using the saturating highly-elastic urethane elastomer of the height of this method preparation transparency, resilience and color inhibition characteristic with higher, meets the needs of market is to high saturating highly-elastic urethane elastomer.
Description
Technical field
The present invention relates to a kind of preparation methods of high highly-elastic urethane elastomer, belong to polyurethane applied technical field.
Background technique
Polyurethane is a kind of high molecular synthetic material of performance between rubber and plastics, its main feature is that hardness adjusts model
Width is enclosed, the elasticity of existing rubber has the hardness of plastics again, has good mechanical performance, wear-resisting property and resilience performance, becomes
High molecular material with the fastest developing speed after PE, PP, PVC, PS, phenolic resin.And transparent polyurethane elastomer not only has
There is excellent optical property, while hardness range and higher mechanical strength again very wide with elastic polyurethane, is suitable for light
, trajectory transmitting and ornameutal handiwork etc., can make spectacle lens, bulletproof glass, trade mark nameplate etc..The type of isocyanates expands
The type of chain agent, the type of polyalcohol and molecular weight etc. can all influence the mechanical property and optical stabilization of polyurethane elastomer
Property.
With the elastomer of the polyester polyol synthesis ester group high containing polarized, it is also easy to produce crystallization, influences polyurethane elastomer
The transparency.And the intermolecular interaction of polyether polyol is weak, product crystallinity is low, is easier to that the polyurethane of high transparency is made
Elastomer.Propylene oxide polyether (PPG) is used as the most common polyether polyol, has price low and viscosity is small at room temperature, uses
Convenient advantage, but the elastomer rebound for using it to make is poor, mechanical property is to be improved.
CN101134843A discloses a kind of preparation method of highly-elastic urethane elastomer, using PTMG2000 or
PPG3000 is mixed with BDO, catalyst, age resister as polymers compositions, isocyanates selection MDI in pre-polymer component,
The MDI of Carbodiimide-Modified and their mixture, the high-elastic elastomer hardness narrow range (Shao A80 ± 2) of production, rebound
Performance is poor.
The common isocyanates of synthesis of polyurethane elastomer is mainly aromatic diisocyanate TDI and MDI, due to phenyl ring
Presence lead to the polyurethane elastomer bridged bond that contains aromatic series urea using the synthesis of both isocyanates, once through ultraviolet light
Irradiation, easily generates the quinoid structure of colour developing, so that product be made to turn yellow, the transparency is reduced.To solve the above problems, probing into one kind
The method of the high highly-elastic urethane elastomer thoroughly of preparation.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of preparation side of high highly-elastic urethane elastomer
Method.Not only there is wider hardness range using the saturating highly-elastic urethane elastomer of the height of this method preparation, but also with higher
The transparency and resilience, and there is color inhibition characteristic, meet the needs of market is to high saturating highly-elastic urethane elastomer.
The preparation method of high highly-elastic urethane elastomer thoroughly of the present invention, specifically includes the following steps:
(1) preparation of polymers compositions
PTMG, HDO, catalyst and antioxidant are protected than sealing after mixing at room temperature, according to certain mass
It deposits；
(2) preparation of polyurethane prepolymer component
PTMG reacts 2~3 hours with isocyanates at 80~85 DEG C, removes Zhen Kong Du≤- 0.095MPa of bubble, system
The standby polyurethane prepolymer component for obtaining isocyano-content and being 8.5~13.2%；
(3) preparation of polyurethane elastomer
By polymers compositions and the control of the mixing temperature of polyurethane prepolymer component at 60~80 DEG C, polymers compositions and poly-
Urethane prepolymer component in 40~100:100 ratio after mixing, be poured into 70~90 DEG C of mold, 30~45 minutes
Die sinking obtains high saturating highly-elastic urethane elastomer without vulcanization.
Wherein:
PTMG molecular weight in step (1) and step (2) is 1000-2000, and PTMG Shui divides Han Liang≤0.03%, PTMG to be
One or both of PTMG1000 or PTMG2000；Catalyst is organo-bismuth class catalyst.
Polymers compositions described in step (1) is made of PTMG, HDO, catalyst and antioxidant, based on mass fraction,
PTMG1000 0~62.5%, PTMG2000 0~93%, HDO 6~38.3%, catalyst 0.4~0.7% and antioxidant
0.5%；The above mass fraction each means the quality for accounting for polymers compositions.
Polyurethane prepolymer component includes PTMG and isocyanates；PTMG be one of PTMG1000 or PTMG2000 or
Two kinds.
PTMG1000 accounts for 0~10.7wt% of polyurethane prepolymer component, and PTMG2000 accounts for polyurethane prepolymer component
43~66.4wt%.
Isocyanates is the mixture of aromatic isocyanate or aromatic isocyanate and aliphatic isocyanates, fragrance
Race's isocyanates is MDI-100, aliphatic isocyanates H12One or both of MDI or IPDI, and aliphatic isocyanic acid
Ester accounts for the 0~20% of isocyanates total amount.
Based on mass fraction, aliphatic isocyanates H12MDI account for the 0~4.3% of polyurethane prepolymer component, IPDI account for it is poly-
The 0~9.3% of urethane prepolymer component；Aromatic isocyanate MDI-100 account for polyurethane prepolymer component 33.6~
38.7%.
Hardness Shao A65~95 of polyurethane elastomer；Rebound 75~85%；Tou Guang Shuai≤89%, up to 96%；Mist degree
≤ 1.1%, most down to 0.6%.
As a preferred technical solution, the preparation method of high highly-elastic urethane elastomer thoroughly of the present invention, tool
Body the following steps are included:
The present invention uses bicomponent system, and bicomponent combinations material includes polymers compositions and pre-polymer component, is named respectively
For component A and B component, involved content percentage is all weight percent.
(1) component A the preparation method is as follows: a kind of mixture, by weight percentage, PTMG, HDO, catalyst and anti-
Oxidant is mixed to prepare, and PTMG1000 0~62.5% or PTMG2000 0~93% and HDO 6~38.3% and is urged at room temperature
Agent 0.4~0.7% and antioxidant 0.5% are sealed after mixing.
The type of the polyether polyol and shared number can be closed within the above range according to the performance of required product
The adjustment of reason ground；The content of the catalyst can need to be chosen within the above range according to real reaction.
(2) B component the preparation method is as follows: a kind of prepolymer, by weight percentage, PTMG and isocyanates 80~
It is reacted 2~3 hours at 85 DEG C, PTMG moisture content You Xuan Wei≤0.03%, PTMG1000 0~10.7%, PTMG2000 43
~66.4%, MDI-100 33.6~38.7%, H may be selected in isocyanates12MDI 0~4.3%, IPDI 0~9.3%, removing
Vacuum degree You Xuan Wei≤- 0.095MPa of bubble, the isocyano-content for obtaining performed polymer is 8.5~13.2%.
(3) preparation of polyurethane elastomer
By polymers compositions and the control of the mixing temperature of polyurethane prepolymer component at 60~80 DEG C, polymers compositions and poly-
Urethane prepolymer component in 40~100:100 ratio after mixing, be poured into 70~90 DEG C of mold, 30~45 minutes
Die sinking obtains high saturating highly-elastic urethane elastomer without vulcanization.
The transparency of polyurethane elastomer is improved in the present invention, this patent increases the chain length of chain extender first, uses
The longer HDO of strand reduces the molecular weight (number-average molecular weight 1000) of polyether polyol as chain extender, makes soft segment chain length
Degree shortens, and hinders to be formed and improves crystallization, in addition, introducing the aliphatic diisocyanate H for being free of phenyl ring12MDI and IPDI conduct
Isocyanates avoids product from turning yellow.In view of not losing its mechanical property while improving the product transparency, possess product
High-elastic characteristic, this patent are used as polyalcohol using polytetramethylene ether diol (PTMG), and in the low article formulations of hardness
A certain proportion of PTMG2000 is added, to improve the rebound of product.To provide a kind of system of high highly-elastic urethane elastomer
Preparation Method, and can be used for preparing the big part product of high rigidity.
Compared with the prior art, the present invention has the following beneficial effects:
(1) using the saturating highly-elastic urethane elastomer of the high transparency with higher and resilience of this method preparation, and have
There is color inhibition characteristic, can meet the needs of market is to high saturating highly-elastic urethane elastomer.
(2) method of the high highly-elastic urethane elastomer thoroughly of the preparation is with easy to operate, process industrial art performance is excellent, saves
The energy, it is low for equipment requirements the advantages that.
(3) the hardness Shao A 65~95 for the polyurethane elastomer being prepared using this method；Rebound 75~85%；Light transmission
Shuai≤89%, up to 96%；Mist degree≤1.1%, most down to 0.6%.
Specific embodiment
The invention will be further described with reference to embodiments.
Embodiment 1
The component of the high highly-elastic urethane elastomer thoroughly of bi-component is as follows:
Component A: Shui divides the PTMG2000 of Han Liang≤0.03% and HDO each 93% and 7%, bismuth class catalyst 0.4%, antioxygen
Agent UV-1076 0.2% and UV-328 0.3% is uniformly mixed and obtains component A.
B component: Shui divides the PTMG2000 66.4% and MDI-100 33.6% of Han Liang≤0.03% to react 2.5 at 85 DEG C
Hour, vacuum (- 0.095MPa) removes bubble, obtains the performed polymer that isocyano-content is 8.5%.
A, B bi-component mixing temperature control at 65 DEG C, according to A:B=100:100 mass ratio after mixing, pour
It in the mold of 75 DEG C of injection, is opened within 40 minutes, it is shore 65A that hardness, which can be obtained, springs back the saturating highly-elastic urethane bullet of height for 85%
Property body.
Embodiment 2
The component of the high highly-elastic urethane elastomer thoroughly of bi-component is as follows:
Component A: Shui divides PTMG1000, PTMG2000 and the HDO of Han Liang≤0.03% each 25%, 65% and 10%, bismuth class
Catalyst 0.5%, antioxidant UV-1076 0.2% and UV-328 0.3% are uniformly mixed and obtain component A.
B component: Shui divides the PTMG2000 63% and MDI-100 37% of Han Liang≤0.03% to react 2.5 hours at 85 DEG C,
Vacuum (- 0.095MPa) removes bubble, obtains the performed polymer that isocyano-content is 9.8%.
A, B bi-component mixing temperature control at 65 DEG C, according to A:B=80:100 mass ratio after mixing, pour
It in the mold of 75 DEG C of injection, is opened within 40 minutes, it is shore 75A that hardness, which can be obtained, springs back the saturating highly-elastic urethane bullet of height for 82%
Property body.
Embodiment 3
The component of the high highly-elastic urethane elastomer thoroughly of bi-component is as follows:
Component A: Shui divides PTMG1000, PTMG2000 and the HDO of Han Liang≤0.03% each 41.7%, 38.3% and 20%,
Bismuth class catalyst 0.6%, antioxidant UV-1076 0.2% and UV-328 0.3% are uniformly mixed and obtain component A.
B component: Shui divides the PTMG2000 57% and MDI-100 38.7%, H of Han Liang≤0.03%12MDI 4.3% is 85
DEG C reaction 2 hours, vacuum (- 0.095MPa) remove bubble, obtain isocyano-content be 12% performed polymer.
A, B bi-component mixing temperature control at 65 DEG C, according to A:B=60:100 mass ratio after mixing, pour
It in the mold of 75 DEG C of injection, is opened within 40 minutes, it is shore 85A that hardness, which can be obtained, springs back the saturating highly-elastic urethane bullet of height for 79%
Property body.
Embodiment 4
The component of the high highly-elastic urethane elastomer thoroughly of bi-component is as follows:
Component A: Shui divides the PTMG1000 of Han Liang≤0.03% and HDO each 62.5% and 37.5%, bismuth class catalyst
0.7%, antioxidant UV-1076 0.2% and UV-328 0.3% are uniformly mixed and obtain component A.
B component: Shui divides the PTMG1000 10.7% of Han Liang≤0.03%, PTMG2000 43% and MDI-100 37%,
IPDI 9.3% reacts 2 hours at 85 DEG C, and vacuum (- 0.095MPa) removes bubble, and obtaining isocyano-content is 13.2%
Performed polymer.
A, B bi-component mixing temperature control at 65 DEG C, according to A:B=40:100 mass ratio after mixing, pour
It in the mold of 75 DEG C of injection, is opened within 40 minutes, it is shore 90A that hardness, which can be obtained, springs back the saturating highly-elastic urethane bullet of height for 75%
Property body.
Comparative example 1
Component A: Shui divides the PTMG2000 of Han Liang≤0.03% and BDO each 86.4% and 13.6%, bismuth class catalyst
0.6%, antioxidant UV-1076 and UV-328 each 0.2% and 0.3% is uniformly mixed and obtains component A.
B component: Shui divides the PTMG2000 57% and MDI-100 38.7%, H of Han Liang≤0.03%12MDI 4.3% is 85
DEG C reaction 2 hours, vacuum (- 0.095MPa) remove bubble, obtain isocyano-content be 12% performed polymer.
A, B bi-component mixing temperature control at 65 DEG C, according to A:B=60:100 mass ratio after mixing, pour
It in the mold of 75 DEG C of injection, is opened within 40 minutes, it is shore 85A that hardness, which can be obtained, springs back the saturating highly-elastic urethane bullet of height for 70%
Property body.
Performance detection, the light transmittance and mist degree of product are carried out to embodiment 1-4 and comparative example 1 polyurethane elastomer prepared
Using Guangzhou Coating Equipment Co., Ltd SGW-810 type mist degree light transmittance instrument, test condition are as follows: after machine booting preheating 20min,
At room temperature, it will be put into colour comparator with a thickness of the sample thin slice of 2mm and fixed with locating clip, against colour comparator seat wall, continuously
After multiple calibration instrument, sample to be tested is pushed into optical path, sample visible light transmittance can be measured.Embodiment 1-4 and comparative example 1
The performance test results be shown in Table 1.
The performance test results of table 1 embodiment 1-4 and comparative example 1
Table 1 is the performance test results table of 1-4 of the embodiment of the present invention and the polyurethane elastomer obtained of comparative example 1, with
Comparative example 1 compare it is found that the present invention using the hexylene glycol Han 1,6- the polyurethane elastomer for preparing of polymers compositions,
Its transparency increases significantly, and light transmittance increases obviously, and mist degree also decreases.Comparative example 3 and comparative example 1, work as bullet
The rebound degree of 3 product of embodiment is higher when property body hardness is identical.And with the increase of HDO proportion in embodiment 1-4,
The light transmittance of elastomer is consequently increased.With the reduction of PTMG1000 ratio, the increasing of PTMG2000 ratio in polymers compositions
Add, the rebound degree of high polyurethane elastomer thoroughly is obviously improved, and this is mainly due to the increases of polyol molecular weight to make soft chain
Section ratio increases, and strand flexibility increases.
Claims (8)
1. a kind of preparation method of high highly-elastic urethane elastomer, it is characterised in that: specifically includes the following steps:
(1) preparation of polymers compositions
PTMG, HDO and catalyst and antioxidant are sealed than after mixing at room temperature, according to certain mass；
(2) preparation of polyurethane prepolymer component
PTMG reacts 2~3 hours with isocyanates at 80~85 DEG C, removes Zhen Kong Du≤- 0.095MPa of bubble, is prepared into
The polyurethane prepolymer component for being 8.5~13.2% to isocyano-content；
(3) preparation of polyurethane elastomer
By polymers compositions and the control of the mixing temperature of polyurethane prepolymer component at 60~80 DEG C, polymers compositions and polyurethane
Pre-polymer component in 40~100:100 ratio after mixing, be poured into 70~90 DEG C of mold, open within 30~45 minutes
Mould obtains high saturating highly-elastic urethane elastomer without vulcanization.
2. the preparation method of high highly-elastic urethane elastomer thoroughly according to claim 1, it is characterised in that: step (1) and
PTMG molecular weight in step (2) is 1000-2000, PTMG Shui divide Han Liang≤0.03%, PTMG be PTMG1000 or
One or both of PTMG2000；Catalyst is organo-bismuth class catalyst；Antioxidant is the mixing of UV-328 and UV-1076
Object.
3. the preparation method of high highly-elastic urethane elastomer thoroughly according to claim 1, it is characterised in that: in step (1)
The polymers compositions is made of PTMG, HDO, catalyst and antioxidant, based on mass fraction, PTMG1000 0~
62.5%, PTMG2000 0~93%, HDO 6~38.3%, catalyst 0.4~0.7% and antioxidant 0.5%.
4. the preparation method of high highly-elastic urethane elastomer thoroughly according to claim 1, it is characterised in that: polyurethane prepolymer
Object component includes PTMG and isocyanates；PTMG is one or both of PTMG1000 or PTMG2000.
5. the preparation method of high highly-elastic urethane elastomer thoroughly according to claim 4, it is characterised in that: PTMG1000 is accounted for
0~10.7wt% of polyurethane prepolymer component, PTMG2000 account for 43~66.4wt% of polyurethane prepolymer component.
6. the preparation method of high highly-elastic urethane elastomer thoroughly according to claim 4, it is characterised in that: isocyanates is
The mixture of aromatic isocyanate or aromatic isocyanate and aliphatic isocyanates, aromatic isocyanate MDI-
100, aliphatic isocyanates H12One or both of MDI or IPDI, and aliphatic isocyanates account for isocyanates total amount
0~20%.
7. the preparation method of high highly-elastic urethane elastomer thoroughly according to claim 6, it is characterised in that: with mass fraction
Meter, aliphatic isocyanates H12MDI accounts for the 0~4.3% of polyurethane prepolymer component, IPDI and accounts for the 0 of polyurethane prepolymer component
~9.3%；Aromatic isocyanate MDI-100 accounts for the 33.6~38.7% of polyurethane prepolymer component.
8. the preparation method of high highly-elastic urethane elastomer thoroughly according to claim 1, it is characterised in that: elastic polyurethane
Hardness Shao A 65~95 of body；Rebound 75~85%；Tou Guang Shuai≤89%, up to 96%；Mist degree≤1.1%, most down to
0.6%.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810879295.2A CN109232856B (en) | 2018-08-03 | 2018-08-03 | Preparation method of high-permeability high-elasticity polyurethane elastomer |
| PCT/CN2018/122976 WO2020024538A1 (en) | 2018-08-03 | 2018-12-24 | Method for preparing polyurethane elastomer with high transparency and high elasticity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810879295.2A CN109232856B (en) | 2018-08-03 | 2018-08-03 | Preparation method of high-permeability high-elasticity polyurethane elastomer |
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| Publication Number | Publication Date |
|---|---|
| CN109232856A true CN109232856A (en) | 2019-01-18 |
| CN109232856B CN109232856B (en) | 2021-04-09 |
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| CN201810879295.2A Active CN109232856B (en) | 2018-08-03 | 2018-08-03 | Preparation method of high-permeability high-elasticity polyurethane elastomer |
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| CN112538149A (en) * | 2019-09-23 | 2021-03-23 | 万华化学集团股份有限公司 | Preparation process of casting polyurethane elastomer |
| CN112574386A (en) * | 2020-12-03 | 2021-03-30 | 万华化学集团电子材料有限公司 | Method for producing cast polyurethane elastomers with improved light transmission and use thereof as polishing pad window material |
| CN113416153A (en) * | 2021-05-28 | 2021-09-21 | 岳阳昌德新材料有限公司 | Alicyclic diisocyanate and preparation method and application thereof |
| CN113831502A (en) * | 2021-10-22 | 2021-12-24 | 东莞市米儿塑胶原料有限公司 | Preparation method of high-hardness transparent TPU |
| CN114853977A (en) * | 2022-04-27 | 2022-08-05 | 盛鼎高新材料有限公司 | High-permeability high-elasticity polyurethane elastomer and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112538149A (en) * | 2019-09-23 | 2021-03-23 | 万华化学集团股份有限公司 | Preparation process of casting polyurethane elastomer |
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| CN113416153A (en) * | 2021-05-28 | 2021-09-21 | 岳阳昌德新材料有限公司 | Alicyclic diisocyanate and preparation method and application thereof |
| CN113831502A (en) * | 2021-10-22 | 2021-12-24 | 东莞市米儿塑胶原料有限公司 | Preparation method of high-hardness transparent TPU |
| CN114853977A (en) * | 2022-04-27 | 2022-08-05 | 盛鼎高新材料有限公司 | High-permeability high-elasticity polyurethane elastomer and preparation method thereof |
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| CN109232856B (en) | 2021-04-09 |
| WO2020024538A1 (en) | 2020-02-06 |
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