A kind of halogen-free flame-retardant film grade polycarbonate material and preparation method thereof

A flame retardant film and polycarbonate technology, which is applied in the field of film grade polycarbonate materials and their preparation, can solve the problems of the film flame retardant grade and mechanical properties and appearance quality that cannot meet the requirements for use, the addition amount is small, and the flame retardant performance is high. , to achieve the effect of improving appearance quality, less addition, and high flame retardancy

Active Publication Date: 2011-12-14
SICHUAN COREMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing film flame retardant level, mechanical properties and appearance quality cannot meet the requirements for use, and to provide a halogen-free flame retardant film-grade polycarbonate material, and another purpose is to provide a preparation method for the material , the material and its preparation method use the flame retardant mechanism of different flame retardants to produce a synergistic effect, with less addition and high flame retardant performance, and at the same time can improve the appearance quality of the film and improve its flexibility and folding resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]In this example, we use the following components in mass percentage: 95% bisphenol A type aromatic polycarbonate resin, 2% ethylene-ethyl acrylate-glycidyl acrylate, 1% triphenyl phosphate, Polydimethylsiloxane 0.5%, potassium perfluorobutane sulfonate 0.5%, anti-dripping agent polytetrafluoroethylene 0.5% and carbon black 0.5%.

[0033] Polycarbonate material of the present invention is made by following method by each component of above-mentioned proportioning:

[0034] a. Fully dry the above-mentioned components for subsequent use;

[0035] B. Take the above-mentioned components after fully drying according to the proportion and mix them uniformly in the mixer;

[0036] c. The fully mixed raw materials are blended and granulated in a twin-screw extruder. The aspect ratio of the twin-screw extruder used is 40, the screw speed is 460 rpm, and the extrusion temperature of the twin-screw extruder is 270 ° C;

[0037] d. Extrude, cool with water, cut into pellets and sie...

Embodiment 2

[0042] In this example, we only use one kind of flame retardant, including the following components in mass percentage: bisphenol A type aromatic polycarbonate resin 94%, ethylene-ethyl acrylate-glycidyl acrylate 3%, Red phosphorus masterbatch 2.3%, anti-dripping agent polytetrafluoroethylene 0.2% and carbon black 0.5%.

[0043] By each component of above-mentioned proportioning, make polycarbonate material by following method:

[0044] a. Fully dry the above-mentioned components for subsequent use;

[0045] B. Take the above-mentioned components after fully drying according to the proportion and mix them uniformly in the mixer;

[0046] c. The fully mixed raw materials are blended and granulated in a twin-screw extruder. The aspect ratio of the twin-screw extruder used is 40, the screw speed is 460 rpm, and the extrusion temperature of the twin-screw extruder is 270 ° C;

[0047] d. Extrude, cool with water, cut into pellets and sieve to obtain the product.

[0048] The pr...

Embodiment 3

[0052] In this example, we only use one kind of flame retardant, including the following components in mass percentage: bisphenol A type aromatic polycarbonate resin 94%, ethylene-ethyl acrylate-glycidyl acrylate 4.5%, Polydimethylsiloxane 0.5%, anti-dripping agent polytetrafluoroethylene 0.5% and carbon black 0.5%.

[0053] By each component of above-mentioned proportioning, make polycarbonate material by following method:

[0054] a. Fully dry the above-mentioned components for subsequent use;

[0055] B. Take the above-mentioned components after fully drying according to the proportion and mix them uniformly in the mixer;

[0056] c. The fully mixed raw materials are blended and granulated in a twin-screw extruder. The aspect ratio of the twin-screw extruder used is 40, the screw speed is 460 rpm, and the extrusion temperature of the twin-screw extruder is 270 ° C;

[0057] d. Extrude, cool with water, cut into pellets and sieve to obtain the product.

[0058] The produc...

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Abstract

The invention discloses a halogen-free antiflaming thin-film polycarbonate material and a preparation method thereof, aiming to solve the problem that the antiflaming grade, mechanical property and appearance quality of the existing thin film can not achieve use requirements. Different fire retardants are used for generating the synergy effect, the additive amount is small, the antiflaming performance is high, the thin film appearance quality is improved, and the flexibility and fold resistance of the polycarbonate material are improved. The halogen-free antiflaming thin-film polycarbonate material comprises the following components: 88-95% of PC (polycarbonate) resin, 2-8% of copolymer, 1-3% of phosphorus-containing fire retardant, 0.1-0.5% of silicon-containing fire retardant, 0.1-0.8% of sulfur-containing fire retardant, 0.1-0.8% of anti-drippage agent and 0.5-2% of carbon black. The halogen-free antiflaming thin-film polycarbonate material is used for producing the antiflaming polycarbonate thin film of which the thickness is 0.25-0.76mm, the antiflaming performance of the produced PC thin film reaches the UL94V-0 grade and has better mechanical performance, and the PC thin film can be used for the insulation protection of electrical and electronic elements, such as mobile phones, computer substrates, flat televisions, power supplies and the like.

Description

technical field [0001] The invention relates to a film-grade polycarbonate material and a preparation method thereof, in particular to a halogen-free flame-retardant film-grade polycarbonate material with a flame-retardant grade reaching UL94V-0 and a preparation method thereof. technical background [0002] PC is an amorphous polymer compound, odorless and transparent; it has excellent mechanical, thermal and electrical properties, especially good impact toughness, small creep, and good dimensional stability of the resulting product. PC has good heat resistance and can be used for a long time in the temperature range of -60°C to 120°C. The heat distortion temperature of PC is 138°C (1.82MPa), its glass transition temperature is 150°C, and it is in a molten state at 220°C to 230°C. , The thermal decomposition temperature is about 310°C; the water absorption rate of PC is low, 0.16%, and the flame resistance of PC complies with UL94V-2, which is a self-extinguishing grade. B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K13/02C08K3/04C08K13/06C08K9/10C08K3/02B29C47/92B29C48/92
Inventor 杨克斌万绍群刘光耀
Owner SICHUAN COREMER CO LTD
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