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Preparation method of environment-friendly and low hardness polyurethane elastomer

A polyurethane elastomer and low hardness technology, which is applied in the field of preparation of low hardness polyurethane elastomer, can solve the problems of poor mechanical properties of plasticizers, and achieve the effect of stable hardness and good mechanical properties

Inactive Publication Date: 2019-07-05
上海优迈材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Plasticizer Migration and Poor Mechanical Properties in Hard Polyurethane Elastomer Materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Polyester polyol PEA-2000 100 parts

[0049] Toluene diisocyanate TDI-100 10-20 parts

[0050] 3,3'-dichloro-4,4'diphenylmethanediamine 2-10 parts

[0051] Polyester-type hydroxyl-terminated hyperbranched polymer 6-9 parts

[0052] Organic zinc catalyst 0.01-0.1 parts

[0053] Antioxidant 245 0.1-0.5 parts

[0054] UV absorber UV-1 0.1-0.5 parts

[0055] Dehydrate the polyester polyol PEA-2000 until the water content is less than 0.03%, add TDI-100, and control the reaction temperature at 60-80°C

[0056] React for 1-5 hours to get prepolymer. This prepolymer and metered chain extender, hyperbranched polymer, antioxidant, anti-UV

[0057] Mix the agent and catalyst evenly, pour it into the mold at 80-120°C, and after vulcanization and molding, you can get low-hardness polyurethane elastic

[0058] body.

Embodiment 2

[0060] Polyester polyol PDA-2000 100 parts

[0061] Toluene diisocyanate TDI-100 10-20 parts

[0062] 2-10 parts of 3,5-dimethylthiotoluenediamine

[0063] Polyester-type hydroxyl-terminated hyperbranched polymer 10-15 parts.

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PUM

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Abstract

The invention relates to the technical field of polyurethane elastomer preparation, in particular to an environment-friendly and low hardness polyurethane elastomer without plasticizer and a preparation method thereof. The environment-friendly and low hardness polyurethane elastomer provided by the invention is composed of polyol, isocyanate, a chain extender, a hyperbranched polymer, an antioxidant, an anti-UV agent and a catalyst. Through the two steps of prepolymer synthesis and elastomer synthesis, the environment-friendly and low hardness polyurethane elastomer material can be finally obtained. The environment-friendly and low hardness polyurethane elastomer has the advantages of no toxicity, no pollution, stable structure, excellent mechanical properties, etc., and can be used in shoe materials contacting the human body, medical treatment, sports fitness and other fields.

Description

technical field [0001] The invention belongs to the technical field of polyurethane elastomer preparation, and in particular relates to a preparation method of an environmentally friendly low-hardness polyurethane elastomer. [0002] technical background [0003] Polyurethane is mainly composed of polymer chains with repeating segments of urethane. According to the product form, it can be divided into elastomer, soft foam, rigid foam, fiber and adhesive, etc. The hardness of polyurethane elastomer material can be adjusted in a wide range, from low hardness A0 to high hardness D90. At present, the market demand for low-hardness polyurethane elastomers is large, and they are widely used in shoe materials, [0004] Industries such as rubber rollers, printing, sports and medical equipment (Zhang Yijun, Application and Research Progress of Low Hardness Polyurethane Elastomers, [0005] chemical industry and engineering technology). [0006] The low-hardness polyurethane elasto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/42C08G18/32C08G18/10
CPCC08G18/10C08G18/4238C08G18/7614C08G18/66
Inventor 徐伟杰叶菊华李剑曾艳李腾飞高璐朱碧婷
Owner 上海优迈材料科技有限公司
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