Insulated and flame-retardant nylon composite material with high thermal conductivity and preparation method thereof

Abstract

The invention discloses an insulated and flame-retardant nylon composite material with high thermal conductivity. The insulated and flame-retardant nylon composite material comprises the following components in parts by weight: 10-20 parts of nylon 6, 10-25 parts of nylon 66, 10-25 parts of magnesium nitride, 5-10 parts of super fine light magnesium carbonate, 5-15 parts of light magnesium oxide, 5-30 parts of magnesium hydroxide, 5-8 parts of fiberglass, 1-5 parts of elastomers, 0.1-0.5 part of coupling agents, and 0.1-0.5 part of antioxidants. The preparation method comprises the following steps: respectively preparing heat-conducting masterbatch and enhanced masterbatch from the nylon 6, the magnesium nitride, the nylon 66 and the fiberglass; adding to a mixture of the magnesium carbonate, the magnesium oxide, the magnesium hydroxide and the coupling agent; and evenly mixing, and adding the elastomers and the antioxidants to pelletize, so as to obtain the composite material. The material has the thermal conductivity of 25W/mk, the fire resistance of UL-94V-0 grade, good insulativity, and excellent mechanical property, and the requirements of the market on the materials with high thermal conductivity and high flame retardancy can be met.

Description

technical field [0001] The invention relates to the technical field of intelligent polymer materials, in particular to a high thermal conductivity insulating flame-retardant nylon composite material and a preparation method thereof. Background technique [0002] With the high-speed and high-power operation of various electronic components, relatively high temperatures will be generated during the use and operation of the equipment, which may cause overheating of electronic components and damage their performance, resulting in reduced reliability, or even a substantial reduction lifetime of the entire system. As we all know, metal materials have very good thermal conductivity, and the products are not easy to burn. They have been used in heat dissipation components of semiconductor device components. However, metals have the following potential disadvantages: [0003] 1) Metal is a good conductor of electricity. In many applications, based on safety considerations, it is des...

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Problems solved by technology

[0004]2) The processing efficiency of metal parts is low. Generally, it needs to be cut or machined from bulk materials into the required complex shapes, requiring special machining equipment, and the unit cost Relatively high;

[0005]3) The density of metal materials is relatively high, usually greater than 2.4g/cm3, resulting in relatively bulky products;

[0006]4) Metals are more susceptible to corrosion than plastic materials;

[0007]5) Metal processing requires relatively high temperature and relatively large energy consumption

Nylon, the first of engineering plastics, is widely used for its excellent performance. Conventional engineering plastics, including thermoplastic and thermosetting plastics, have the advantages of good mechanical properties, chemical stability, electrical insulation, etc., and are widely used in daily electrical appliances and other shells, etc. field, but because of its low thermal

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