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; whil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1:

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

Example Embodiment

[0014] Example 2:

[0015] The polycaprolactone polyol (number average molecular weight 2000, production place: Japan Daicel Chemical Co., Ltd.) and dimethyl biphenyl diisocyanate (production place: Japan Soda Co., Ltd.), in a weight ratio of 1:0.23, in the catalyst Under the action of triethylenediamine (DABCO331: American Gas Chemicals Co., Ltd.), it reacts to generate isocyanate group-terminated low-molecular prepolymer, and then the isocyanate group-terminated prepolymer 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) The polycaprolactone polyol and dimethyl biphenyl diisocyanate are added to the reactor according to the above-determined weight ratio, mixed and stirred, and the catalyst triethylenedi The amine reacts to form an isocyanate group-terminated prepolymer, and the temperature is c...

Example Embodiment

[0016] Example 3:

[0017] The polycarbonate polyol (number-average molecular weight 2000, place of production: Asahi Kasei Chemical Co., Ltd.) and dimethyl biphenyl diisocyanate (place of production: Soda Co., Ltd.), in a weight ratio of 1:0.23, on the catalyst two laurel Under the action of dibutyl tin acid (origin: Shanghai Chemical Reagent Company), the low-molecular-weight prepolymer blocked by isocyanate groups is formed by reaction, and then the isocyanate group blocked prepolymer and 1,6- Hexanediol (origin: BASF Chemical Co., Ltd.) was reacted at a weight ratio of 1:0.05 to obtain a polyurethane elastomer. The manufacturing method of the polyurethane elastomer is carried out according to the following process steps: 1) The polycarbonate polyol and dimethyl biphenyl diisocyanate are added to the reactor according to the above-determined weight ratio, mixed and stirred, and the catalyst dibutyl tin dilaurate is added at the same time The reaction is carried out to generate ...

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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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