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A kind of polyurethane microcellular elastomer and preparation method thereof

A microcellular elastomer and elastomer technology, applied in the field of polyurethane microcellular elastomers, can solve the problems of not meeting the requirements of lightweight and low cost, increasing product cost and process complexity, and not meeting the requirements of lightweight, etc. Bright skin, good for migration, and the effect of increasing friction resistance

Active Publication Date: 2022-08-02
WANHUA CHEM BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent CN1922235A discloses swelling-resistant polyurethane integral foam. This technical solution uses polyether with high ethylene oxide (EO) content to improve the swelling resistance of the foam. However, when the polyurethane foam is used as a shoe sole, the overall density is partial High, unable to meet the current demand for lightweight and low cost
[0005] Patent CN103483530A discloses a polyether-type polyurethane sole solution. In order to improve the mechanical properties, polyethylene dimer glycol diethylene glycol is introduced into the isocyanate component, which increases the product cost and process complexity; The unique physical blowing agent HCFC141B will have an impact on the environment; in addition, the density of the technical solution product is higher (0.5g / cm 3 ), does not meet the lightweight requirements

Method used

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  • A kind of polyurethane microcellular elastomer and preparation method thereof
  • A kind of polyurethane microcellular elastomer and preparation method thereof
  • A kind of polyurethane microcellular elastomer and preparation method thereof

Examples

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Embodiment Construction

[0043] The raw materials used in Examples and Comparative Examples are as follows:

[0044] Diphenylmethane diisocyanate, MDI-100, Wanhua Chemical;

[0045] Modified MDI, CDMDI-100L, Wanhua Chemical;

[0046] Polyether polyol 1, starting with propylene glycol, polymerized by propylene oxide and end-capped with ethylene oxide, the ethylene oxide content is 15%, and the number average molecular weight is 4000;

[0047] Polyether polyol 2, starting with glycerol, is polymerized by propylene oxide and end-capped with ethylene oxide, the ethylene oxide content is 15%, and the number average molecular weight is 6000;

[0048] Polyether polyol 3, starting with diethylene glycol, is polymerized by propylene oxide and end-capped with ethylene oxide, the ethylene oxide content is 25%, and the number average molecular weight is 5000;

[0049] Polyether polyol 4, starting from triethanolamine, polymerized by propylene oxide and end-capped with ethylene oxide, the ethylene oxide cont...

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Abstract

The invention provides a polyurethane microcellular elastomer. The elastomer adopts polyether polyol as a reaction raw material and is matched with other components. The obtained polyurethane microcellular elastomer has a lower density and simultaneously It has excellent tensile strength, tear strength, elongation at break, wear resistance and folding resistance. The present invention also provides a preparation method of the elastomer.

Description

technical field [0001] The present invention relates to a polyurethane microporous elastomer, in particular to a polyether type microporous elastomer applied to shoe soles, and a preparation method of the microporous elastomer. Background technique [0002] Polyurethane Microcellular Elastomer, also known as Polyurethane Microcellular Elastomer, is a polymer synthetic material containing more urethane groups on the main chain, and its density is between the foam and the solid core material. , the pore size of the cells is 0.1 to 10 μm. Polyurethane microcellular elastomer takes into account the advantages of light foam, good impact resistance, energy absorption, good cushioning performance, high strength and good wear resistance of the elastomer, so it is especially suitable as a sole material. Polyurethane microcellular elastomers can be divided into polyester type and polyether type according to the type of polyol used. The tensile strength, tear strength, elongation at ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/64C08G18/48C08G18/42C08G18/32C08G18/20C08G18/18C08G101/00
CPCC08G18/6415C08G18/64C08G18/4804C08G18/4829C08G18/4825C08G18/4812C08G18/425C08G18/4018C08G18/3206C08G18/2063C08G18/1833
Inventor 王玉领林芳茜徐志磊刘新建王林瑞沈沉赵怡
Owner WANHUA CHEM BEIJING
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