Non-halogen flame-retarding high performance polycarbonate engineering plastics and preparation method thereof

Abstract

The invention relates to a halogen-free inflaming retarding high-performance polycarbonate engineering plastic and a preparation method thereof. Counted in weight percentage, the components of the engineering plastic include as follows: 78 to 92 percent of PC resin, 5 to 10 percent of sulfur-bearing super engineering plastics, 0.1 to 3 percent of flame retardant containing silicon, 0.1 to 1 percent of anti-dropping agent, 1 to 5 percent of compatilizers and 0.1 to 1 percent of chemical inhibitors; wherein, the sulfur-bearing engineering resin is polyethersulfone or the composition of the polyethersulfone and polyphenyl thioether; the flame retardant containing silicon is acrylic ester graft modification polysiloxane or the composition of the acrylic ester graft modification polysiloxane and poly methyl phenyl siloxane. The preparation method includes as follows: the materials of the prescription are fully mixed in a high speed mixer; then is fed into a co-rotating meshed double-screw extruder to melt, blend and extrude. In the invention, the sulfur-bearing super engineering plastics and the flame retardant containing silicon are matched and used, thus endowing the polycarbonate with excellent flame retardation and higher heat resistance as well as excellent compatibility, improving the mechanical property of the composite material and overcoming the defects of being easily separated out and absorbing moisture of a micromolecule flame retardant containing silicon.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant high-performance polycarbonate (PC) engineering plastic and a preparation method thereof, which can be applied to decks, chargers, connectors, liquid crystal panels, sublimation printers, high-temperature coil skeletons and plasma TVs for heat dissipation Key components such as windows that have high requirements for heat resistance and flame retardancy belong to the technical field of new chemical materials. Background technique [0002] Polycarbonate (PC)-based composite engineering plastics are a class of thermoplastic resin-based composite materials with excellent performance. They have high impact strength, heat resistance and dimensional stability, and are widely used as raw materials for manufacturing various industrial parts. Such as casings and transmission parts of various electronic and electrical products, office equipment and other industrial applications. These applications generall...

AI Technical Summary

Problems solved by technology

However, due to the improvement and upgrading of resin production equipment and synthesis routes involved in the former, the investment is huge and the production cycle is long, which is difficult in practice, which limits its popularization and application. The synthesis of special types of flame retardants and flame retardant synergists is difficult and expensive It is expensive, and there are many inconveniences in application. For example, the currently used sulfonate flame retardants are easy to precipitate and absorb moisture and have a certain damage to the good toughness of PC materials, and they cannot meet the requirements of some special products such as thin film when used alone. Flame Retardancy Requirements for Wall Parts

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