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Polyurethane microporous elastomer and preparation method thereof

A technology of microporous elastomers and elastomers, which is applied in the preparation of microporous elastomers and the field of polyether microporous elastomers, which can solve problems such as environmental impact, high density, and high overall density, so as to improve tolerance and reduce waste products rate effect

Active Publication Date: 2021-02-26
WANHUA CHEM BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Polyurethane microporous elastomer and preparation method thereof
  • Polyurethane microporous elastomer and preparation method thereof
  • Polyurethane microporous elastomer and preparation method thereof

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Embodiment Construction

[0043] The raw materials used in embodiment and comparative example are as follows:

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

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

[0046] Polyether polyol 1, starting from propylene glycol, polymerized with propylene oxide and capped with ethylene oxide, with an ethylene oxide content of 15% and a number average molecular weight of 4000;

[0047] Polyether polyol 2, starting from glycerol, polymerized with propylene oxide and capped with ethylene oxide, with an ethylene oxide content of 15% and a number average molecular weight of 6000;

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

[0049] Polyether polyol 4, starting from triethanolamine, polymerized with propylene oxide and capped with ethylene oxide, the content of ethylene oxide i...

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Abstract

The invention relates to a polyurethane microporous elastomer, polyether polyol is adopted as a reaction raw material and is matched with other components, so that the obtained polyurethane microporous elastomer has excellent tensile strength, tearing strength, elongation at break, wear resistance and folding resistance under the condition of relatively low density. The invention also provides a preparation method of the elastomer.

Description

technical field [0001] The invention relates to a polyurethane microcellular elastomer, in particular to a polyether microcellular elastomer used in shoe soles, and a preparation method of the microcellular elastomer. Background technique [0002] Polyurethane microcellular elastomer, also known as polyurethane microcellular elastomer, is a polymer synthetic material with more carbamate groups in the main chain, and its density is between foam and solid core materials. , the pore size of the cells is 0.1-10 μm. Polyurethane microcellular elastomers take into account the advantages of light foam, good impact resistance, energy absorption, good cushioning performance, high strength and good wear resistance of elastomers, so they are especially suitable as shoe sole materials. Polyurethane microcellular elastomers can be divided into two categories: polyester type and polyether type according to the type of polyol used. The tensile strength, tear strength, elongation at break...

Claims

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Application Information

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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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