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Cast polyurethane elastomer composition for fashion model

A polyurethane elastomer, clothing model technology, applied in applications, home appliances, dummies and other directions, can solve the problems of complex production process, high temperature deformation, product brittleness and other problems, to improve mechanical properties, high saturated vapor pressure, increase The effect of high temperature performance

Active Publication Date: 2011-05-04
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional production of model materials is to use PVC or PVC mixed with FRP. The production process of this product is complicated, the energy consumption is large, the production cycle is long, and the product is brittle, easy to deform at high temperature, and not easy to degrade. At the same time, due to the limitation of environmental protection, these products must be used A new product to replace

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Component A: PPG430 with a functionality of 4 and a number average molecular weight of 300 accounts for 20% of the total and PPG500 accounts for 20% of the total, and polyether polyol (PPG3600) with a functionality of 3 and a molecular weight of 6000 accounts for 54.49% of the total, 3,3'-dichloro-4,4'-diaminodiphenylmethane (MOCA) accounts for 5% of the total amount, bismuth-zinc mixed catalyst accounts for 0.01% of the total amount, and fumed white carbon black accounts for 0.5% of the total amount. Dehydration at -0.095MPa at 110°C until the water content is less than 0.05%, to obtain component A.

[0026] (2) Component B: PAPI 70%, MDI-50 30%, mix evenly in proportion.

[0027] (3) Reaction part (during product production): Mix component A and component B at a ratio of 100:70, and the mixing temperature is 30°C. Then, it is centrifugally poured and vulcanized (cured at 30° C. to 40° C. for 10 minutes) to obtain a polyurethane elastomer product with a hardness o...

Embodiment 2

[0029] (1) A component: the polyether polyol (PPG430) of functional degree 4 molecular weight 300 accounts for 20% of the total amount and PPG500 accounts for 10% of the total amount, and the polyether polyol of functional degree 3 molecular weight 6000 accounts for the total amount ( PPG3600) 58.69%, 3,3'-dichloro-4,4'-diaminodiphenylmethane (MOCA) accounted for 11% of the total, bismuth-zinc mixed catalyst accounted for 0.01% of the total and fumed silica accounted for 0.3% of the total amount is dehydrated at 100-110°C and -0.095MPa until the water content is less than 0.05%, and component A is obtained.

[0030] (2) Component B: PM200 80%, liquefied MDI 20%, mix evenly in proportion.

[0031] (3) Reaction part (during product production): Mix component A and component B at a ratio of 100:60, and the mixing temperature is 30°C. Then it is centrifugally poured and vulcanized (cured at 30° C. to 40° C. for 10 minutes) to obtain a polyurethane elastomer product with a hardnes...

Embodiment 3

[0033] (1) Component A: Polyether polyol (PPG430) with a functionality of 4 molecular weight 300 accounts for 20% of the total and polyether polyol (EP-330N) with a functionality of 3 molecular weight 5000 accounts for 64.5% of the total, 3 , 3'-dichloro-4,4'-diaminodiphenylmethane (MOCA) accounted for 15% of the total, bismuth-zinc mixed catalyst accounted for 0.02% of the total and fumed silica accounted for 0.48% of the total 100~110℃, dehydration at -0.095MPa until the water content is less than 0.05%, to obtain component A.

[0034] (2) Component B: Mix PM200 evenly in proportion.

[0035] (3) Reaction part (during product production): Mix the prepolymer component and the polymer component at a ratio of 100:65, and the mixing temperature is 30°C. Then cast and vulcanize in the usual way (vulcanized at 70°C to 80°C for 10 minutes) to obtain a polyurethane elastomer product with a hardness of shoreD80.

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Abstract

The invention relates to a cast polyurethane elastomer composition for a fashion model. The composition has a two-component system, wherein a component A consists of trifunctional and tetrafunctional polypropylene oxide ether polyol with the molecular weight of 300 to 6,000, 3,3'-dichloro-4,4'-diaminodiphenylmethane (MOCA), a catalyst and other aids; a component B consists of isocyanate which is polymethylene polyphenyl polyisocyanate (PAPI), diphenylmethane diisocyanate-50 (MDI-50), carbodiimide modified MDI or a mixture thereof; and the component B and the component A are mixed at room temperature in a weight ratio of 100:(60-70) and the mixture is subjected to centrifugal casting molding to form a cast polyurethane elastomer with the shore D hardness of 70 to 80D and high mechanical property. The cast polyurethane elastomer composition is mainly used for producing the fashion model and other polyurethane sundries which have requirements on high strength and hardness.

Description

technical field [0001] The invention relates to a castable polyurethane elastic body used for producing molding materials. Background technique [0002] Polyurethane is a polymer synthetic material with performance between rubber and plastic. It is characterized by a wide range of hardness adjustment, both the elasticity of rubber and the hardness of plastic, and has good mechanical properties. Due to the diversity of polyurethane raw materials, polyurethane products have completely penetrated into people's daily life. The traditional production of model materials is to use PVC or PVC mixed with FRP. The production process of this product is complicated, the energy consumption is large, the production cycle is long, and the product is brittle, easy to deform at high temperature, and not easy to degrade. At the same time, due to the limitation of environmental protection, these products must be used A new product is substituted. [0003] The invention adopts the low-odor di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08K13/02C08K5/18C08K3/36C08G18/76C08G18/66A47F8/02
Inventor 张芳陈伟王强曹士强
Owner SHANDONG INOV POLYURETHANE
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