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Polyamide material for improving adhesion effect of paint as well as preparation method and application of polyamide material

A polyamide and coating technology, which is applied in the field of polyamide materials and their preparation for improving the adhesion effect of coatings, can solve the problems of poor adhesion effect of coatings, poor fluidity, poor adhesion of coatings in wet and dry states, etc. The effect of maintaining fluidity, enhancing wetting and penetration

Inactive Publication Date: 2020-02-07
JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the paint adhesion effect of improving the surface of polyamide materials by using existing common formula technology is poor, and the fluidity of glass mineral fiber modified polyamide materials obtained by the prior art is poor and the dry and wet state adhesion of paint is poor.

Method used

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  • Polyamide material for improving adhesion effect of paint as well as preparation method and application of polyamide material
  • Polyamide material for improving adhesion effect of paint as well as preparation method and application of polyamide material
  • Polyamide material for improving adhesion effect of paint as well as preparation method and application of polyamide material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0041] (1) Put semi-crystalline polyamide, ionic polymer, plasticizer, lubricant, long-term thermal aging resistance agent and antioxidant into a low-speed mixer, mix at a speed of 100r / min for 5min, and mix well to form the main ingredient ,spare;

[0042](2) The above-mentioned main material is metered and fed through the loss-in-weight scale from the main feed port of the twin-screw extruder, and the chopped glass fiber is metered and fed through the weight-loss scale from the side feed port of the twin-screw extruder; The temperature of each section of the screw extruder is: 230°C, 265°C, 270°C, 270°C, 265°C, 255°C, 255°C, 245°C, 245°C, 245°C, the head temperature is 270°C, the screw speed The speed is 400r / min; the material is fully fused under the shearing, mixing and conveying of the screw, and finally it is extruded, drawn, cooled by water, and pelletized to make polyamide material pellets to improve the coating adhesion effect. Wherein, the consumption of each compon...

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Abstract

The invention discloses a polyamide material for improving the adhesion effect of paint as well as a preparation method and application of the polyamide material. The polyamide material is composed ofthe following components in percentages by weight: 20-90% of semi-crystalline polyamide, 8-70% of glass mineral fibers, 1-6% of an ion copolymer, 0.2-3% of a plasticizer, 0.3-0.5% of a lubricant, 0.2-0.6% of an agent resistant to long-term heat aging, and 0.2-0.5% of an antioxidant. According to the method, the ion copolymer having a carboxyl side group in a molecular side chain and the polyamideplasticizer capable of suppressing hydrogen bonding from being formed among molecular chains of the semi-crystalline polyamide and reducing the crystallization ability of a polyamide material are used to modify the semi-crystalline polyamide material to obtain high fluidity and an unexpectedly good coating adhesion effect.

Description

technical field [0001] The invention belongs to the technical field of composite materials for automobiles, and in particular relates to a polyamide material for improving the coating adhesion effect, a preparation method and application thereof. Background technique [0002] Polyamide (nylon, PA) is an engineering plastic with excellent comprehensive properties. Nylon has high mechanical strength, heat resistance, abrasion resistance, chemical resistance and electrical insulation. Nylon materials are widely used in the automotive industry, electrical and electronic industries, transportation, machinery, aerospace and other fields. By modifying the nylon substrate with glass fiber reinforcement or mineral filling, the strength and heat resistance of nylon can be greatly improved, and the practical application value of nylon material can be endowed. At present, the most widely used polyamide materials in industry are semi-crystalline polyamide materials, such as PA6 and PA6...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L23/08C08K7/10C08K5/20C08K5/435C08K13/04
CPCC08L77/06C08L23/0876C08K7/10C08K5/20C08K5/435C08K13/04
Inventor 欧阳威猛杨杰戴李宗刘凯申应军袁丛辉王腾刁雪峰吴腾达
Owner JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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