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Highly-elastic urethane elastomer composition

A technology of polyurethane elastomer and composition, which is applied in the field of high-elastic polyurethane elastomer, which can solve the problems of reduced comfort and achieve the effects of improving production efficiency, excellent mechanical properties, and excellent impact resilience

Active Publication Date: 2008-03-05
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of its advantages, it is used to make the wheels of roller shoes, but the impact resilience of common polyurethane elastomers is below 60%, and the comfort of the products made from this is reduced when sliding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Polymer component: polytetrahydrofuran ether polyol (PTMG2000) 89, 1,4-butanediol 10%, bismuth catalyst 0.5% and UV-9 0.2%, 1010 0.3% in functional degree 2, molecular weight 2000 Dehydration at -0.095MPa at 100-110°C until the water content is less than 0.05%, to obtain polymer components.

[0017] (2) Prepolymer component: It is obtained by reacting 55% of polytetrahydrofuran ether polyol (PTMG2000) with 2 functionalities and molecular weight of 2000, and 45% of diphenylmethane diisocyanate (MDI-100) at 70°C to 90°C Prepolymer with an isocyanate content of 12.5%.

[0018] (3) Reaction part (during product production): Mix the prepolymer component and the polymer component at a ratio of 1:1, and the mixing temperature is 60°C. Then cast and vulcanize in the usual way (vulcanize for 20 minutes at 60° C. to 75° C.) to obtain a high-elastic polyurethane elastomer product with a hardness of shoreA80±2.

Embodiment 2

[0020] (1) Polymer components: polyether polyol (PPG-3000) with functionality 2 and molecular weight 3000 (PPG-3000) 87%, 1,4-butanediol 11.5%, lead catalyst 1.0% and UV-328 0.2%, BHT0 .3% is dehydrated at 100-110°C and -0.095MPa until the water content is less than 0.05%, to obtain a polymer component.

[0021] (2) Prepolymer component: MDI20 modified with 45% polyether polyol (PPG2000) with 2 functionalities and molecular weight of 2000, 35% diphenylmethane diisocyanate (MDI-100) and carbonized diimide % React at 70°C to 90°C to obtain a prepolymer with an isocyanate content of 14%.

[0022] (3) Reaction part: mix the prepolymer component and the polyol component at a ratio of 1:1, and the mixing temperature is 60°C. Then cast and vulcanize in the usual way (vulcanize at 60°C to 75°C for 20 minutes). A highly elastic polyurethane elastomer product with a hardness of shoreA80±2 was obtained.

[0023] The properties of the high elastic polyurethane elastomer product obtaine...

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Abstract

The present invention is one high elasticity polyurethane composition, which is one double component system comprising one pre-polymer component and one polymer component. The pre-polymer component is obtained through the reaction of diisocyanate and polyol and has NCO of 8-15 %, the diisocyanate is MDI and / or carbodiimide modified MDI, and the polyol is polytetramethylene ether polyol or polyoxetane ether polyol and has molecular weight of 1000-3000 and functionality of 2. The polymer component is prepared with the above said polyol, 1, 4-utanediol, catalyst and antiager. The pre-polymer component and the polymer component are mixed in the ratio of 1 to 1, and the mixture is poured, vulcanized and formed to obtain high elasticity polyurethane elastomer with excellent mechanical performance and high shock strength and resilience. The present invention is used mainly in producing roller for roller skates and scooter.

Description

technical field [0001] The present invention relates to high elastic polyurethane elastomers. Background technique [0002] Polyurethane is a polymer synthetic material with properties between rubber and plastic. It is characterized by a wide range of hardness adjustment. It has both the elasticity of rubber and the hardness of plastic, and has good mechanical properties, wear resistance and resilience. . Because of its advantages, it is used to make the wheels of roller shoes, but the impact resilience of common polyurethane elastomers is below 60%, and the comfort level of the products made therefrom decreases when sliding. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-elastic polyurethane elastomer composition, which can make the product have excellent mechanical properties and impact resilience, and can be used for the preparation of transparent polyurethane skate wheels and skateboard wheels. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08G18/48C08G18/10C08G18/78C08G18/24
Inventor 陈海良陈伟张芳徐业峰
Owner SHANDONG INOV POLYURETHANE
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