Flame-resistant polycarbonate resin composition
A technology of resin composition and flame retardant, which is applied in the field of flame retardant polycarbonate resin composition, and can solve the problems of difficulty in coloring transparent colors, lower light transmittance, lower transparency, etc.
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[0166] Hereinafter, the present invention will be described in detail through examples. In addition, evaluation was performed by the following method.
[0167] (1) Flame retardancy: The pellets obtained by the following method were dried at 120° C. for 6 hours with a hot air dryer. Then, by an injection molding machine (IS150EN-5Y, manufactured by Toshiba Machinery Co., Ltd.), under the condition that the cylinder temperature is 280°C and the mold temperature is 60°C, a test piece for the UL94 combustion test with a thickness of 2mm is molded, and the test piece is carried out. UL Specification 94 vertical burning test for evaluation. For the test pieces that do not meet any of the grades of V-0, V-1 and V-2, record it as not V.
[0168] (2) Total light transmittance: The pellets obtained by the following method were dried at 120° C. for 6 hours with a hot air dryer. Then, using an injection molding machine (SG-150U, manufactured by Sumitomo Heavy Industries, Ltd.), under t...
Embodiment 1~22 and comparative example 1~5
[0171]In the polycarbonate resin powder produced by the interfacial polycondensation method from bisphenol A and phosgene, various additives were blended in the amounts recorded in the table, mixed with a mixer, and then extruded with a vented twin-screw extruder ( TEX30α (complete teeth, same direction of rotation, two-flight screw), manufactured by Nippon Steel Works, Ltd.) was melt-kneaded to obtain pellets. The additives were pre-mixed with the polycarbonate resin powder in advance using a Henschel mixer at a concentration 10 times the compounding amount, and then overall mixed with the mixer. Extrusion conditions were as follows: extrusion rate: 20 kg / h; screw rotation speed: 150 rpm; vacuum degree of the exhaust part: 3 KPa; extrusion temperature: 260° C. from the first supply port to the extrusion die.
[0172] The content of each component represented by the symbol in a table|surface is as follows.
[0173] (A component)
[0174] PC-1: linear aromatic polycarbonate r...
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