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PA/TPU supercritical foamed composite material and preparation method thereof

A composite material and supercritical technology, applied in the field of foam materials, can solve the problems of poor tensile strength, tear strength, mechanical properties and service performance, poor appearance and mechanical properties, poor foaming effect, etc. Quality stability, good appearance and mechanical properties, the effect of good appearance

Inactive Publication Date: 2020-02-14
福建安达福新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. The foaming effect is not good, the cell size is small or large, uneven, resulting in poor appearance and mechanical properties;
[0009] 2. Poor mechanical properties and performance such as tensile strength and tear strength

Method used

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  • PA/TPU supercritical foamed composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A kind of PA / TPU supercritical foam composite material, is made of the raw material that comprises following parts by weight:

[0053] 200-240 parts of polyamide,

[0054] Silicone modified polyurethane 160~180 parts,

[0055] 70-77 parts of maleic anhydride graft modifier,

[0056] 45-52 parts of maleic anhydride grafted high-density polyethylene,

[0057] 22-26 parts of glass fiber,

[0058] 15-18 parts of cross-linking agent,

[0059] 5-7 parts of nucleating agent;

[0060] The polyamide is a mixture comprising polyhexamethylene sebacamide and hexamethylene adipamide-terephthalamide copolyamide, wherein polyhexamethylene sebacamide and hexamethylene adipamide-terephthalamide The mass ratio of hexamethylene diamide copolyamide is 1: (0.5~0.7);

[0061] The silicone-modified polyurethane is based on 2,4-toluene diisocyanate, tetrahydrofuryl propylene oxide copolyether polyol, 3,3'-dichloro-4,4'-diaminodiphenylmethane and organosilicon diol As a raw material, a s...

Embodiment 2

[0083] A kind of PA / TPU supercritical foam composite material, is made of the raw material that comprises following parts by weight:

[0084] 200 parts of polyamide,

[0085] Silicone modified polyurethane 160 parts,

[0086] 70 parts of maleic anhydride graft modifier,

[0087] 45 parts of maleic anhydride grafted high-density polyethylene,

[0088] 22 parts of glass fiber,

[0089] 15 parts of crosslinking agent,

[0090] 5 parts of nucleating agent;

[0091] The polyamide is a mixture of polyhexamethylene sebacamide and hexamethylene adipamide-terephthalamide copolyamide, wherein polyhexamethylene sebacamide and hexamethylene adipamide-terephthalamide The mass ratio of formamide hexamethylenediamine copolyamide is 1:0.5;

[0092] The silicone-modified polyurethane is based on 2,4-toluene diisocyanate, tetrahydrofuryl propylene oxide copolyether polyol, 3,3'-dichloro-4,4'-diaminodiphenylmethane and organosilicon diol As a raw material, a silicone-modified polyurethane...

Embodiment 3

[0104]A kind of PA / TPU supercritical foam composite material, is made of the raw material that comprises following parts by weight:

[0105] 240 parts of polyamide,

[0106] Silicone modified polyurethane 180 parts,

[0107] 77 parts of maleic anhydride graft modifier,

[0108] 52 parts of maleic anhydride grafted high-density polyethylene,

[0109] 26 parts of glass fiber,

[0110] 18 parts of cross-linking agent,

[0111] 7 parts of nucleating agent;

[0112] The polyamide is a mixture of polyhexamethylene sebacamide and hexamethylene adipamide-terephthalamide copolyamide, wherein polyhexamethylene sebacamide and hexamethylene adipamide-terephthalamide The mass ratio of formamide hexamethylenediamine copolyamide is 1:0.7;

[0113] The silicone-modified polyurethane is based on 2,4-toluene diisocyanate, tetrahydrofuryl propylene oxide copolyether polyol, 3,3'-dichloro-4,4'-diaminodiphenylmethane and organosilicon diol As a raw material, a silicone-modified polyurethane...

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Abstract

The invention discloses a PA / TPU supercritical foamed composite material and a preparation method thereof. The PA / TPU supercritical foamed composite material is prepared from the following raw materials in parts by weight: 200-240 parts of polyamide, 160-180 parts of organic silicon modified polyurethane, 70-77 parts of a maleic anhydride grafted modifier, 45-52 parts of maleic anhydride grafted high-density polyethylene, 22-26 parts of glass fiber, 15-18 parts of a cross-linking agent and 5-7 parts of a nucleating agent. The PA / TPU supercritical foamed composite material is good in foaming effect and moderate and uniform in pore size, and good appearance performance, mechanical performance and the like are guaranteed; the tensile strength is high, the tearing strength is high, and the tearing resistance is good; the material has the advantages of low density, light weight, high strength and the like, and has excellent mechanical properties and usability.

Description

technical field [0001] The invention relates to the field of foam materials, in particular to a PA / TPU supercritical foam composite material and a preparation method thereof. Background technique [0002] The name of TPU is thermoplastic polyurethane elastomer. It is mainly divided into polyester type and polyether type. It has a wide range of hardness (60HA-85HD), wear resistance, oil resistance, transparency, and good elasticity. It is widely used in daily necessities, sporting goods, toys, decorative materials and other fields. Halogen-free resistance Burning TPU can also replace soft PVC to meet environmental protection requirements in more and more fields. The so-called elastomer refers to a polymer material with glass transition temperature lower than room temperature, elongation at break > 50%, and better recovery after external force is removed. Polyurethane elastomer is a relatively special category of elastomers. Polyurethane elastomer has a wide range of hard...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L75/04C08L51/06C08L87/00C08K7/14C08K3/22C08J9/12
CPCC08J9/0061C08J9/0066C08J9/0085C08J9/0095C08J9/122C08J2203/06C08J2203/08C08J2377/06C08J2451/06C08J2475/04C08J2477/06C08J2487/00
Inventor 丁尤权丁星懿林清锴
Owner 福建安达福新材料科技有限公司
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