Heat-conducting flame-retardant high-fiber reinforced polycarbonate composition and preparation method thereof

Abstract

The invention relates to the technical field of polymer functional composite materials, in particular to a heat-conducting flame-retardant high-fiber reinforced polycarbonate composition and a preparation method thereof. The composition is prepared from the following components in percentage by weight: 30-70% of polycarbonate; 0-10% of silicon copolycarbonate; 2-10% of a flame retardant; 3-10% ofa heat conduction material; 0-5% of MBS; 0-0.2% of a coupling agent; 20-50% of a thermally conductive reinforcement; 0.2-0.5% of an anti-dripping agent; 0.1-0.3% of an antioxidant; 0.1-0.5% of a lubricating agent; 0.1%-0.4% of a toughening agent; and 0.2%-0.5% of a compatilizer. The adopted phosphazene flame retardant is low in addition proportion, resistant to high-temperature processing, high inthermal deformation temperature, good in weather resistance, free of precipitation, halogen-free or extremely low in halogen content; the flat glass fiber can achieve higher filling ratio and has better stretching, bending and impact resistance, a molded product is not warped, the dimensional stability is extremely good, and basically no glass fiber is exposed on the appearance; and the heat conduction material is added, so that the molded product has better heat conductivity, the molding period is shortened, the hand feeling is better during use, and the life cycle of the product is longer.

Description

technical field [0001] The invention relates to the technical field of polymer functional composite materials, in particular to a thermally conductive flame-retardant high-fiber-reinforced polycarbonate composition and a preparation method. Background technique [0002] In recent years, consumer electronics have developed rapidly. Notebook computers, flat panel displays, large thin-walled TVs, digital cameras, and other handheld electronic devices require materials with high strength, flame retardancy, and easy processing. However, as molded products, now Some products are prone to burning or explosion after long-term use, discoloration and cracking after long-term use, charging or improper use, so it is usually necessary to add flame retardants and thermal conductive materials to the materials. [0003] In the prior art, flame retardants with plasticizing properties such as BDP and RDP are usually used, or brominated flame retardants, organosilicon and sulfonate system flam...

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Problems solved by technology

[0002]In recent years, consumer electronics have developed rapidly. Notebook computers, flat panel displays, large thin-walled TVs, digital cameras, and other handheld electronic devices require materials with high strength, Flame retardant, easy to process and other characteristics, but as molded products, existing products are easy to burn hands after long-term use, discoloration and cracking after long-term use, and easy to burn or explode after charging or improper use. Therefore, it is usually necessary to add flame retardant to the material agents and thermally conductive materials

[0003]In the prior art, flame retardants with plasticizing properties such as BDP and RDP are usually used, or brominated flame retardants and organosilicon and sulfonate system flame retardants are used. Flame retardant, the above-mentioned flame retardant makes the final product not resistant to processing temperature and poor processability, the flame retardant is easy to hydrolyze, and is easy to precipitate on the surface of the product, and the instability of flame retardant has a great impact on product performance

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