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High-performance polyurethane elastomer and making method thereof

A polyurethane elastomer, high-performance technology, applied in the field of high-performance polyurethane elastomer and its manufacturing, can solve the problems of not being able to provide high hardness and high wear resistance, not being able to guarantee the dynamic performance of the material, and poor material strength, so as to improve the preservation Performance, high hardness, performance-enhancing effect

Active Publication Date: 2007-05-23
TIANJIN AINY ELE MECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing formulations of castable polyurethane elastomers, materials that ensure high hardness, high wear resistance, and high resilience are not oil-resistant; while materials with better oil resistance have poor strength, cannot provide high hardness and high wear resistance, and cannot Ensure good dynamic properties of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Polyethylene adipate polyol (number-average molecular weight 2000, place of origin: Shandong Huada Chemical Co., Ltd.) and 1,5-naphthalene diisocyanate (place of origin: Bayer Chemical Co., Ltd.), in a weight ratio of 1:0.25 , under the action of the catalyst triethylenediamine (DABCO331: American Gas Chemical Co., Ltd.), the reaction is carried out to generate a low molecular weight prepolymer terminated by isocyanate group, and then the isocyanate group terminated prepolymer generated by the reaction is The polymer and 1,4-butanediol (BASF Chemical Co., Ltd.) were reacted at a weight ratio of 1:0.05 to obtain a polyurethane elastomer. The manufacture method of this polyurethane elastomer is carried out according to the following process steps: 1) polyethylene adipate polyol and 1,5-naphthalene diisocyanate are added into the reactor according to the weight ratio determined above to mix and stir, and the catalyst is added simultaneously Triethylenediamine reacts to gen...

Embodiment 2

[0015] Polycaprolactone polyol (number-average molecular weight 2000, place of origin: Japan Daicel Chemical Co., Ltd.) and dimethyl biphenyl diisocyanate (place of origin: Japan Soda Co., Ltd.), by weight ratio of 1: 0.23, in the catalyst Under the effect of triethylenediamine (DABCO331: U.S. Gas Chemical Co., Ltd.), react to generate the low molecular weight prepolymer of isocyanate group termination, then the prepolymer of the isocyanate group termination of reaction generation and 1,4-butanediol (BASF Chemical Co., Ltd.) was reacted at a weight ratio of 1:0.045 to obtain a polyurethane elastomer. The manufacturing method of the polyurethane elastomer is carried out according to the following process steps: 1) adding polycaprolactone polyol and dimethyl biphenyl diisocyanate into the reactor according to the weight ratio determined above to mix and stir, and simultaneously adding the catalyst triethylene diisocyanate The amine is reacted to form a prepolymer terminated by i...

Embodiment 3

[0017] Polycarbonate polyol (number-average molecular weight 2000, place of origin: Japan Asahi Kasei Chemical Co., Ltd.) and dimethyl biphenyl diisocyanate (place of origin: Japan Soda Co., Ltd.), by weight ratio of 1: 0.23, in catalyst dilaurel Under the effect of dibutyltin dibutyltin (origin: Shanghai Chemical Reagent Company), react to generate the low-molecular prepolymer of isocyanate group termination, then the prepolymer of the isocyanate group termination of reaction generation and 1,6- Hexylene glycol (place of origin: BASF Chemical Co., Ltd.) was reacted at a weight ratio of 1:0.05 to obtain a polyurethane elastomer. The manufacture method of this polyurethane elastomer is carried out according to the following process steps: 1) polycarbonate polyol and dimethyl biphenyl diisocyanate are added into the reactor according to the above-mentioned determined weight ratio to mix and stir, and simultaneously add the catalyst dibutyltin dilaurate Carrying out the reaction ...

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Abstract

This invention relates to a high-performance polyurethane elastomer and its manufacture method, which is characterized by carrying out a reaction of polyester polyol and diisocyanate at a weight ratio of 1 : 0.1-0.9 with catalyst to obtain an isocyanate-terminated low molecular weight prepolymer, and then carrying out a reaction of the prepolymer and low molecular weight diols at a weight ratio of 1 : 0.03-0.06 to obtain the polyurethane elastomer. The invention has the advantages as follows: (1) improved performance of polyurethane elastomer, like high hardness, good wear resistance, high resilience and good oil resistance, (2) improved preservation performance of the diisocyanate-terminated prepolymer, and 10-20 hours of operation time, and (3) increased durability of the products. The method is simple and controllable, and appropriate to manufacture the parts which can be used under the conditions of high loading, high temperature and oil resistance.

Description

(1) Technical field [0001] The invention relates to a polyurethane polymer material and a manufacturing method thereof, in particular to a high-performance polyurethane elastomer and a manufacturing method thereof. (2) Background technology [0002] Polyurethane elastomer is a kind of polymer material between rubber and plastic. There are many kinds of raw materials and formulations for the manufacture of polyurethane elastomers. According to the processing methods of their products, they can be divided into cast elastomers (CPUE), thermoplastic elastomers (TPUE) and mixing elastomers (MPUE). The present invention mainly relates to castable elastic body (CPUE), which is a viscous liquid before processing and forming, so it is called "liquid rubber". . The raw materials for producing cast polyurethane elastomer include polyester polyol, diisocyanate and low molecular diol chain extender, among which polyester polyol provides high strength, high wear resistance and high resi...

Claims

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Application Information

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IPC IPC(8): C08G18/10C08G18/42C08G18/76
Inventor 田莹胡兴平
Owner TIANJIN AINY ELE MECHANICAL
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