A kind of pa6 composite material and preparation method thereof

Abstract

The invention provides a PA6 composite material and a preparation method thereof. The PA6 composite material is prepared from the following ingredients in parts by mass: 33 to 37 percent of PA6 resin,8 to 13 percent of alkali-free glass fiber, 0 to 50 percent of magnesium oxide, 0 to 50 percent of magnesium hydrate and 0 to 5 percent of auxiliary agents, wherein the sum of the mass of the magnesium oxide and the magnesium hydrate does not exceed 60 percent of the total mass of the composite material. The composite material has excellent heat conduction performance, and simultaneously has excellent mechanical performance; the halogen-free flame-retardant effect can be achieved. The process of the preparation method is simple; the preparation method is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a PA6 composite material and a preparation method thereof. Background technique [0002] In recent years, due to the advancement of plastic modification technology, some plastic raw material factories have developed thermally conductive plastics with high thermal conductivity, and their thermal conductivity can reach 1w / mk to 30w / mk. Thereby opening up the way for plastic LED light cups. Like traditional light sources, LEDs also generate heat during operation, and their luminous efficiency is greatly affected by the outside world and itself. In fact, the heat generated on the chip cannot be removed in time. It restricts the design of many new products in the engineering field. Compared with traditional aluminum materials, polymer heat-conducting composite materials have the advantages of high insulation, corrosion resistance, light weight, high degree of machinability and design...

AI Technical Summary

Problems solved by technology

For the thermally conductive PA6 currently on the market, thermally conductive fillers generally use aluminum oxide (Al2O3), boron nitride, aluminum nitride (AlN), magnesium oxide (MgO), silicon carbide whiskers, etc. Low coefficient, difficult processing and poor mechanical properties, high industrial cost, low extrusion production capacity and other problems, it requires very high fillers to meet the flame retardant V0 requirements, or additional bromine antimony or phosphorus nitrogen flame retardants The material meets V0, but bromine-antimony flame retardants will affect the electrical properties of the material. Although phosphorus-nitrogen flame retardants do not affect the electrical properties, they will precipitate under high temperature and high humidity conditions, affecting the luminous efficiency and appearance of the LED

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