A kind of modified nylon 6/thermoplastic polyurethane composite material and preparation method thereof

A thermoplastic polyurethane and composite material technology, used in the chemical industry, can solve the problems of large amount of TPU and compatibilizer, insufficient toughness, etc., and achieve the effect of significant technological progress, excellent mechanical properties, and less side reactions.

Inactive Publication Date: 2017-11-28
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the invention provides a modified nylon 6 / thermoplastic polyurethane composite material and a preparation method thereof, said modified nylon 6 / thermoplastic polyurethane composite material and a preparation method thereof To solve the technical problems of insufficient toughness of the PA6 / TPU composite material in the prior art and a large amount of TPU and compatibilizer

Method used

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  • A kind of modified nylon 6/thermoplastic polyurethane composite material and preparation method thereof
  • A kind of modified nylon 6/thermoplastic polyurethane composite material and preparation method thereof
  • A kind of modified nylon 6/thermoplastic polyurethane composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A kind of nylon 6 / thermoplastic polyurethane composite material modified by compatibilizer EBA-g-MAH, calculated in parts by weight, its raw material composition and content are as follows:

[0045]

[0046] Described thermoplastic polyurethane is the polyester type thermoplastic polyurethane that molecular weight is 100000;

[0047] The lubricant is calculated by mass ratio of zinc stearate and paraffin, that is, zinc stearate: paraffin is a mixture composed of 1:2;

[0048] The antioxidant is [tetra(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester (referred to as antioxidant 1010);

[0049] Described plasticizer is dioctyl phthalate (abbreviated as DOP);

[0050] The coloring agent is titanium dioxide (abbreviated as TiO 2 ).

[0051] The preparation method of the above-mentioned nylon 6 / thermoplastic polyurethane composite material modified by compatibilizer EBA-g-MAH specifically comprises the following steps:

[0052] (1), preparation of ...

Embodiment 2

[0061] A kind of nylon 6 / thermoplastic polyurethane composite material modified by compatibilizer EBA-g-MAH, calculated in parts by weight, its raw material composition and content are as follows:

[0062]

[0063] Described thermoplastic polyurethane is the polyether type thermoplastic polyurethane that molecular weight is 200000;

[0064] The lubricant is calculated by mass ratio of calcium stearate and stearic acid, that is, calcium stearate: stearic acid is a mixture composed of 1:2;

[0065] The antioxidant is 3-(3,5-di-tert-butyl-4-hydroxyl) propylene octadecyl ester (referred to as antioxidant 1076);

[0066] Described plasticizer is dibutyl phthalate (abbreviated DBP);

[0067] The coloring agent is silver white pearl powder.

[0068] The preparation method of the above-mentioned nylon 6 / thermoplastic polyurethane composite material modified by compatibilizer EBA-g-MAH specifically comprises the following steps:

[0069] (1), preparation of graft product EBA-g-MA...

Embodiment 3

[0078] A kind of nylon 6 / thermoplastic polyurethane composite material modified by compatibilizer EBA-g-MAH, calculated in parts by weight, its raw material composition and content are as follows:

[0079]

[0080] Described thermoplastic polyurethane is the polyether type thermoplastic polyurethane that molecular weight is 250000;

[0081] The EBA-g-MAH is prepared by a method comprising the following steps:

[0082] The lubricant is stearic acid and paraffin, calculated by mass ratio, that is, stearic acid: paraffin is a mixture of 1:2;

[0083] The antioxidant is [tetra(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester (referred to as antioxidant 1010);

[0084] Described plasticizer is diheptyl phthalate (being called for short DHP);

[0085] The coloring agent is titanium dioxide (abbreviated as TiO 2 ).

[0086] The preparation method of the above-mentioned nylon 6 / thermoplastic polyurethane composite material modified by compatibilizer EBA-g-MA...

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Abstract

The invention discloses modified nylon 6 / thermoplastic polyurethane composite. The composite comprises, in parts by weight, 85-95 parts of nylon 6, 5-15 parts of thermoplastic polyurethane, 1-5 parts of EBA-g-MAH (ethylene-butyl acrylate-grafted maleic anhydride), 0.6-0.8 parts of a lubricating agent, 0.2-0.3 parts of an antioxidant, 0.3-0.5 parts of a plasticizer and 0.2-0.3 parts of a coloring agent. The invention provides a preparation method of the composite. Firstly, a grafted product, namely, EBA-g-MAH, is prepared, nylon 6, thermoplastic polyurethane, EBA-g-MAH, the lubricating agent, the antioxidant, the plasticizer and the coloring agent are uniformly mixed in a mass ratio, the mixture is extruded and granulated through a twin-screw extruder and subjected to injection molding through an injection molding machine, and the compatibilizer EBA-g-MAH modified nylon 6 / thermoplastic polyurethane composite is obtained. The composite has the characteristics of excellent mechanical performance, good processibility and low cost.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a polyurethane composite material, specifically a modified nylon 6 / thermoplastic polyurethane composite material and a preparation method thereof. Background technique [0002] Nylon 6 / thermoplastic polyurethane composite material can be widely used in automobile, aviation, aerospace and other fields due to the excellent friction performance of nylon 6 and the high elasticity and toughness of thermoplastic polyurethane. However, due to the poor compatibility between nylon 6 and thermoplastic polyurethane, the mechanical properties of the composite are not good. For example, Xiaofeng Ma et al. blended TPU with nylon 6. When the amount of TPU was 20% of the total raw material mass, the notched impact strength of the resulting PA6 / TPU composite was only 11kJ / m 2 , The elongation at break is only 125% (Ma Xiaofeng, Zhu Guoqiang, Li Xinfa. Study on the mechanical properties of PA6 / TPU b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L75/06C08L51/00C08L91/06C08K13/02C08K5/09C08K5/098C08K5/12C08K3/22
CPCC08K2201/014C08L77/02C08L2205/02C08L2205/03C08L2205/035C08L2205/08C08L75/06C08L51/003C08L91/06C08K13/02C08K5/098C08K5/1345C08K5/12C08K2003/2241C08L75/08C08K5/09C08K5/13
Inventor 贾润萍刘立梅何新耀黄茂松
Owner SHANGHAI INST OF TECH
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