Environment-friendly flame-retardant scratch-resistant polycarbonate resin and preparation method thereof

Abstract

The invention discloses an environment-friendly flame-retardant scratch-resistant polycarbonate resin, which comprises the following ingredients in part by weight: 90-95 parts of polycarbonate resin, 2-5 parts of flame retardant, 2-5 parts of plasticizer, 03-1 part of anti-dripping agent, 0.5-1 part of antioxidant additive and 0.5-1 part of processing additive. A preparation method of the environment-friendly flame-retardant scratch-resistant polycarbonate resin adopts a twin-screw extrusion process and has the advantages of simple and continuous technological process, high production efficiency and stable product quality; the flame-retardant and fireproofing performance and the surface scratch resistance of a product are increased at the same time that the properties of the polycarbonate resin are maintained, so that the serviceable range of the product is enlarged, and the environment-friendly flame-retardant scratch-resistant polycarbonate resin can be applied to occasions with harsher fireproofing and scratch-resistant requirements on polycarbonate products and has broad application prospects.

Description

technical field

[0001] The invention relates to engineering plastics, in particular to an environmentally friendly flame-retardant and scratch-resistant polycarbonate resin and a preparation method thereof. Background technique

[0002] Polycarbonate resin is a thermoplastic engineering plastic with a wide range of uses. It has excellent impact resistance, heat resistance, corrosion resistance, electrical insulation and electrical properties. It also has the advantages of convenient processing, stable product size, and good surface gloss. Features, easy to color, widely used in industrial fields such as machinery, automobiles, electronic appliances, instrumentation, textiles and construction, but general polycarbonate resins are not fire-resistant and flame-retardant, and the surface is generally scratch-resistant. Under the social background that excellent performance, environmental protection and life safety are paid more and more attention, the demand for environmentally ...

Examples

Embodiment 5

[0034] A method for preparing an environmentally friendly flame-retardant and scratch-resistant polycarbonate resin, comprising the following steps:

[0035] Weigh 90 parts by weight of medium molecular weight bisphenol A type polycarbonate resin with molecular weight between 25000-80000, 5 parts by weight of flame retardant dimethyl siloxane polymer, toughening agent core-shell class A 5 parts by weight of methyl acrylate, 1 part by weight of polytetrafluoroethylene (fluorine content is 60%) of anti-dripping agent, 1 part by weight of alkylated monophenol of antioxidant auxiliary agent, 1 part by weight of processing aid fatty acid amide, add Fully mix in the high-speed mixer; use the metering and conveying device to send the mixed material into the twin-screw extruder. Finished product; Among them, the twin-screw extruder adopts vacuum exhaust when mixing materials, the aspect ratio of the twin-screw extruder is greater than 40, the screw speed is 300 rpm, and the working te...

Embodiment 6

[0037] A method for preparing an environmentally friendly flame-retardant and scratch-resistant polycarbonate resin, comprising the following steps:

[0038] Weigh 95 parts by weight of low molecular weight bisphenol A type polycarbonate resin with molecular weight between 10000-25000, 2 parts by weight of flame retardant silicone polymer, toughening agent butadiene and styrene 2 parts by weight of terpolymer, 0.3 part by weight of tetrafluoroethylene copolymer (fluorine content is 75%) of anti-dripping agent copolymerizable unsaturated monomer, 0.5 part by weight of antioxidant auxiliary agent hindered phenol, processing aid Add 0.3 parts by weight of titanate coupling agent and 0.2 parts by weight of stearic acid amide into a high-speed mixer and mix them uniformly; After shearing and mixing, extrude, pull, cool, pelletize, and pack into finished products; among them, the twin-screw extruder adopts vacuum exhaust when mixing materials, and the aspect ratio of the twin-screw ...

Embodiment 7

[0040] A method for preparing an environmentally friendly flame-retardant and scratch-resistant polycarbonate resin, comprising the following steps:

[0041] Weigh 92 parts by weight of polycarbonate resin, 2 parts by weight of flame retardant dimethyl siloxane polymer, 2 parts by weight of silicone polymer, 4 parts by weight of toughening agent methyl methacrylate, Anti-dripping agent polytetrafluoroethylene (fluorine content is 70%) 0.8 parts by weight, antioxidant auxiliary agent diphenyl phosphite 0.5 parts by weight, triphenyl phosphite 0.3 parts by weight, processing aid aluminate coupling agent 0.4 parts by weight, 0.4 parts by weight of ethylene bis stearic acid amide, add in the high-speed mixer and fully mix; With the metering and conveying device, the mixed material is sent into the twin-screw extruder, through the shearing of the screw, After mixing, extrude, draw, cool, pelletize, and pack into finished products; among them, the twin-screw extruder adopts vacuum e...

technical field

[0001] The invention relates to engineering plastics, in particular to an environmentally friendly flame-retardant and scratch-resistant polycarbonate resin and a preparation method thereof. Background technique

[0002] Polycarbonate resin is a thermoplastic engineering plastic with a wide range of uses. It has excellent impact resistance, heat resistance, corrosion resistance, electrical insulation and electrical properties. It also has the advantages of convenient processing, stable product size, and good surface gloss. Features, easy to color, widely used in industrial fields such as machinery, automobiles, electronic appliances, instrumentation, textiles and construction, but general polycarbonate resins are not fire-resistant and flame-retardant, and the surface is generally scratch-resistant. Under the social background that excellent performance, environmental protection and life safety are paid more and more attention, the demand for environmentally ...

Examples

Embodiment 5

[0034] A method for preparing an environmentally friendly flame-retardant and scratch-resistant polycarbonate resin, comprising the following steps:

[0035] Weigh 90 parts by weight of medium molecular weight bisphenol A type polycarbonate resin with molecular weight between 25000-80000, 5 parts by weight of flame retardant dimethyl siloxane polymer, toughening agent core-shell class A 5 parts by weight of methyl acrylate, 1 part by weight of polytetrafluoroethylene (fluorine content is 60%) of anti-dripping agent, 1 part by weight of alkylated monophenol of antioxidant auxiliary agent, 1 part by weight of processing aid fatty acid amide, add Fully mix in the high-speed mixer; use the metering and conveying device to send the mixed material into the twin-screw extruder. Finished product; Among them, the twin-screw extruder adopts vacuum exhaust when mixing materials, the aspect ratio of the twin-screw extruder is greater than 40, the screw speed is 300 rpm, and the working te...

Embodiment 6

[0037] A method for preparing an environmentally friendly flame-retardant and scratch-resistant polycarbonate resin, comprising the following steps:

[0038] Weigh 95 parts by weight of low molecular weight bisphenol A type polycarbonate resin with molecular weight between 10000-25000, 2 parts by weight of flame retardant silicone polymer, toughening agent butadiene and styrene 2 parts by weight of terpolymer, 0.3 part by weight of tetrafluoroethylene copolymer (fluorine content is 75%) of anti-dripping agent copolymerizable unsaturated monomer, 0.5 part by weight of antioxidant auxiliary agent hindered phenol, processing aid Add 0.3 parts by weight of titanate coupling agent and 0.2 parts by weight of stearic acid amide into a high-speed mixer and mix them uniformly; After shearing and mixing, extrude, pull, cool, pelletize, and pack into finished products; among them, the twin-screw extruder adopts vacuum exhaust when mixing materials, and the aspect ratio of the twin-screw ...

Embodiment 7

[0040] A method for preparing an environmentally friendly flame-retardant and scratch-resistant polycarbonate resin, comprising the following steps:

[0041] Weigh 92 parts by weight of polycarbonate resin, 2 parts by weight of flame retardant dimethyl siloxane polymer, 2 parts by weight of silicone polymer, 4 parts by weight of toughening agent methyl methacrylate, Anti-dripping agent polytetrafluoroethylene (fluorine content is 70%) 0.8 parts by weight, antioxidant auxiliary agent diphenyl phosphite 0.5 parts by weight, triphenyl phosphite 0.3 parts by weight, processing aid aluminate coupling agent 0.4 parts by weight, 0.4 parts by weight of ethylene bis stearic acid amide, add in the high-speed mixer and fully mix; With the metering and conveying device, the mixed material is sent into the twin-screw extruder, through the shearing of the screw, After mixing, extrude, draw, cool, pelletize, and pack into finished products; among them, the twin-screw extruder adopts vacuum e...

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