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Thermoplastic polyurethane elastomer foam material composition and foam material

A technology of thermoplastic polyurethane and foaming materials, which is applied in the field of foaming materials, thermoplastic polyurethane elastomer foaming materials and their compositions, and can solve the problems affecting the performance of foamed products, the two-phase distribution of olefin polymers and TPU Uniformity and other issues

Active Publication Date: 2021-03-26
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is likely to cause uneven distribution of the two phases of olefinic polymer and TPU, thus affecting the performance of the final foamed product
[0006] Although the existing methods for improving the cross-linked foaming properties of TPU materials have achieved certain results, there is still room for improvement in terms of compression set and rebound performance of foamed materials.

Method used

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  • Thermoplastic polyurethane elastomer foam material composition and foam material
  • Thermoplastic polyurethane elastomer foam material composition and foam material
  • Thermoplastic polyurethane elastomer foam material composition and foam material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] A thermoplastic polyurethane elastomer foam composition, by weight, comprises the following components:

[0087] Thermoplastic polyurethane elastomer (WHT-8175RV Wanhua Chemical) 95 parts;

[0088] 5 parts of trimethylolpropane triacrylate (Changxing Chemical);

[0089] 0.8 parts of dicumyl peroxide;

[0090] 2 parts of azodicarbonamide;

[0091] 1 part stearic acid;

[0092] Zinc oxide 2 parts.

[0093] The thermoplastic polyurethane elastomer foaming material in this example is prepared by the following method:

[0094] 1) Put thermoplastic polyurethane elastomer, trimethylolpropane acrylate, dicumyl peroxide, azodicarbonamide, stearic acid, and zinc oxide into an internal mixer, and mix for 15 minutes at a temperature of 115°C. A foamable composition is prepared.

[0095] 2) Put the foamable composition obtained in step 1) into a flat vulcanizing machine for molding and foaming. The foaming temperature is 170° C., the pressure is 30 MPa, the foaming time is 20 ...

Embodiment 2

[0098] A thermoplastic polyurethane elastomer foam composition, by weight, comprises the following components:

[0099] Thermoplastic polyurethane elastomer (WHT-1180 Wanhua Chemical) 90 parts;

[0100] 10 parts of liquid oligomer polybutadiene (N4-9000 Xin Tema company);

[0101] 0.5 parts of dicumyl di-tert-butyl peroxide;

[0102] 3.5 parts of azodicarbonamide;

[0103] 1 part stearic acid;

[0104] Zinc oxide 2 parts.

[0105] The thermoplastic polyurethane elastomer foaming material in this example is prepared by the following method:

[0106] 1) Put thermoplastic polyurethane elastomer, liquid oligomer polybutadiene, dicumyl bis-tert-butyl peroxide, azodicarbonamide, stearic acid and zinc oxide in an internal mixer and knead, mix The kneading time is 15 minutes and the temperature is 115° C. to prepare a foamable composition.

[0107] 2) Put the foamable composition obtained in step 1) into a flat vulcanizing machine for molding and foaming. The foaming temperature...

Embodiment 3

[0110] A thermoplastic polyurethane elastomer foam composition, by weight, comprises the following components:

[0111] Thermoplastic polyurethane elastomer (WHT-1170IC Wanhua Chemical) 85 parts;

[0112] Liquid oligomer polyisoprene (IR-565 Lin's Chemical) 15 parts;

[0113] 1 part of dicumyl bis-tert-butyl peroxide;

[0114] 5 parts of p-toluenesulfonyl hydrazide;

[0115] 1 part stearic acid;

[0116] Zinc oxide 2 parts.

[0117] The thermoplastic polyurethane elastomer foaming material in this example is prepared by the following method:

[0118] 1) Put thermoplastic polyurethane elastomer, liquid oligomer polyisoprene, dicumyl bis-tert-butyl peroxide, p-toluenesulfonyl hydrazide, stearic acid and zinc oxide in an internal mixer for mixing, The mixing time was 15 minutes and the temperature was 115° C. to prepare a foamable composition.

[0119] 2) Put the foamable composition obtained in step 1) into a flat vulcanizing machine for molding and foaming. The foaming te...

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Abstract

The invention relates to a thermoplastic polyurethane elastomer foam material composition and a foam material. The composition is prepared from the following components in parts by weight: 25-98 partsof a thermoplastic polyurethane elastomer, 2-75 parts of an unsaturated compound containing carbon-carbon double bonds, 0.1-25 part of a foaming agent and 0.1-15 part of a cross-linking agent, wherein the sum of the parts by weight of the thermoplastic polyurethane elastomer and the unsaturated compound containing the carbon-carbon double bonds is 100 parts. The thermoplastic polyurethane elastomer foam material can be prepared from the composition through mixing, mould pressing or ejection foaming. The foam material has the advantages of good wear resistance, high resilience, excellent slipresistance and the like.

Description

technical field [0001] The invention relates to a foaming material, in particular to a thermoplastic polyurethane elastomer foaming material and a composition for preparing it, and belongs to the technical field of lightweight materials. Background technique [0002] Ethylene-vinyl acetate copolymer (EVA) foaming material is widely used as foaming shoe material, packaging and other materials because of its light weight, softness and comfortable wearing, but the ethylene-vinyl acetate copolymer with high expansion ratio has compression permanent Disadvantages such as large deformation, poor resilience, and non-wear resistance. Thermoplastic polyurethane elastomer has both the elasticity of rubber and the processing performance of plastic. Its foam material has the advantages of high strength, good elasticity, wear resistance, cold resistance, oil resistance, and aging resistance. However, ordinary thermoplastic polyurethane elastomer materials cannot be directly applied to t...

Claims

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Application Information

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IPC IPC(8): C08F283/00C08F222/14C08J9/10C08J9/00C08J3/24C08L75/04C08L9/00C08L51/04C08L83/08
CPCC08F283/006C08J9/103C08J9/102C08J9/0066C08J3/246C08J2375/04C08J2435/02C08J2409/00C08J2451/04C08J2309/00C08J2475/04C08J2483/08C08J2203/04
Inventor 朱仕升付小亮黄岐善
Owner WANHUA CHEM GRP CO LTD
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