Metal-plastic double-layer combined part and preparation method thereof

Abstract

The invention provides a metal-plastic double-layer combined part, and belongs to the field of metal-plastic composite structures. The metal-plastic double-layer combined part comprises an aluminum alloy metal sheet layer and a PA66 composite layer, and in composition, the PA66 composite layer comprises, by weight, 10-30% of carbon fiber, 20-40% of boron nitride and the balance PA66. In the metal-plastic double-layer combined part, carbon fiber has high strength and thermal conductivity, boron nitride also has high thermal conductivity, and the addition of carbon fiber and boron nitride is beneficial to forming a thermal conduction network in PA66 and improving thermal conductivity; besides, due to the physical and chemical effects of the aluminum alloy metal sheet layer and the PA66 composite layer, the interface strength of the metal-plastic double-layer combined part is improved. Embodiment data shows that the thermal diffusion coefficient of the metal-plastic double-layer combinedpart is 2.88 m<2> / s, the interface strength of the metal-plastic double-layer combined part is 5.52 MPa, and the metal-plastic double-layer combined part has high thermal conductivity and interface strength.

Description

technical field [0001] The invention relates to the technical field of metal-plastic composite structures, in particular to a metal-plastic double-layer combination and a preparation method thereof. Background technique [0002] With the continuous development of science and technology, various product components have higher and higher requirements for the comprehensive performance of materials. How to combine the advantages of various materials together to make the designed components have good thermal conductivity, and have light weight, The feature of high strength has always been one of the hot topics of discussion among product designers today. [0003] In the prior art, there are few studies on the thermal conductivity of metal-plastic composite structures, and metal-plastic composite structures generally have the problem of poor thermal conductivity. For example, CN101578018A discloses that the metal body is used as an insert and molded by injecting molten plastic af...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are few studies on the thermal conductivity of metal-plastic composite structures, and metal-plastic composite structures generally have the problem of poor thermal conductivity

For example, CN101578018A discloses that the metal body is used as an insert and molded by injecting molten plastic after cooling. The material of the plastic part is selected from liquid crystal polymers, polyphenylene sulfide, and polybutylene terephthalate. To the thermal conductivity of the bonding parts; CN201726613U discloses that the plastic part is used as the shell, and the inner surface of the plastic part has an adhesive layer, and the metal film layer is sprayed with powdery metal material on the adhesive layer on the inner surface of the plastic part, and cooled by high-temperature hot melt post-molding, but does not mention the thermal conductivity of metal and plastic joints; CN103673739A discloses that the material of the thermally conductive plastic layer is a polymer and a modified polymer-based composite material, and the heat dissipation efficiency is improved through the micro-nano structure of plastic processing, but No mention of thermal conductivity of metal to plastic joints

Images