High-gloss low-warp polycarbonate reinforced flame-retardant material

Abstract

The invention provides a high-gloss low-warp polycarbonate reinforced flame-retardant material which comprises the following components in percentage by weight: 30-70% of aromatic polycarbonate, 10-30% of siloxane PC, 5-30% of inorganic mineral fillers, 0.1-2% of an anti-drip agent, 0.1-5% of silicone, 5-30% of glass fibers, 0.06-1.0% of a sulfonate flame retardant, 0.3% of an antioxidant and 0.5-10% of a CBT fluidity improver, wherein the siloxane PC is capable of effectively improving the impact resistance of the material; the adopted silicone flexibilizers are capable of improving the impact strength of the materials and improving the machinability, floating fibers and flame-retardant property of the materials; a composite reinforcing medium has obvious improvements in the aspects of product surface and warp; therefore, the product disclosed by the invention can be well applied to thin-walled products, in-mold insert injection molding, consumer electronics appearance parts and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of flame retardant materials, in particular to a high gloss and low warpage polycarbonate reinforced flame retardant material with good heat resistance and flame retardant properties. Background technique [0002] Polycarbonate (referred to as PC) is a high molecular polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-aromatic and other types. Among them, the low mechanical properties of aliphatic and aliphatic-aromatic polycarbonates limit their application in engineering plastics. [0003] At present, only aromatic polycarbonate has been industrialized. Due to the special structure of polycarbonate, it has become the fastest-growing general-purpose engineering plastic among the five major engineering plastics. [0004] Polycarbonate itself has excellent comprehensive properties. Howe...

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Problems solved by technology

[0004] Polycarbonate itself has excellent comprehensive performance. However, after modification of glass fiber and minerals, the surface and processing performance of the product are reduced, which limits the use of the product in light and thin, appearance parts.

[0005] In order to apply reinforced polycarbonate materials to thin-walled appearance parts, the usual treatment method is to add ABS resin alloying and phosphate ester as a processing performance modifier, but the addition of phosphate ester greatly reduces the heat resistance of the material and impact resistance, the alloying of ABS resin causes a decrease in flame retardancy

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