Flame-resistant polycarbonate resin composition

A technology of polycarbonate resin and resin composition, applied in the field of flame-retardant polycarbonate resin composition, can solve the problem that the thermal stability and hydrolysis resistance of the resin composition are satisfied, the impact strength cannot be said to be very sufficient, and the resin composition To meet the problems of hydrolysis resistance, etc., to achieve the effect of excellent appearance and hydrolysis resistance, and high flame retardancy

Active Publication Date: 2008-09-03
TEIJIN KASEK KK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In Patent Document 1, there is a description of improving dispersibility by mixing polytetrafluoroethylene in the resin with an organic polymer, but it cannot be said that the resin composition described satisfies thermal stability and hydrolysis resistance.
In addition, in Patent Documents 2 to 4, the dispersibility of polytetrafluoroethylene is also improved by the same method, but it cannot be said that the resin composition described is satisfactory in terms of hydrolysis resistance, and also cannot be achieved in terms of impact strength. say enough

Method used

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  • Flame-resistant polycarbonate resin composition
  • Flame-resistant polycarbonate resin composition
  • Flame-resistant polycarbonate resin composition

Examples

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Embodiment 1～34 and comparative example 1～4

[0176] In the polycarbonate resin powder produced from bisphenol A and phosgene by the interfacial polycondensation method, various additives are mixed according to the compounding amounts described in Table 1 to Table 3, and after mixing with a mixer, a vented twin-screw extruder is used to (TEX30α (complete teeth, same direction rotation, double-flight screw), manufactured by Nippon Steel Works, Ltd.) was melt-kneaded to obtain pellets. The additives were pre-mixed with the polycarbonate resin powder at a concentration 10 times the compounding amount, and the pre-mix was prepared with a Henschel mixer, and then overall mixed with a mixer. Extrusion conditions are: extrusion rate: 20kg / h; screw rotation speed: 150rpm; exhaust vacuum: 3KPa; extrusion temperature: 260°C from the first supply port to the extrusion die

[0177] After drying the obtained granules at 120°C for 6 hours with a hot air circulation dryer, they are passed through an injection molding machine at a cylinder...

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Abstract

The invention provides a flame-retardant panlite composition having excellent flame retardance, appearance and hydrolysis resistance, comprising 75% to 99.98% by weight of aromatic panlite (composition A), 0.01% to 5% by weight of polyfluortetraethylene mixture (composition B) and 0.001% to 20% by weight of flame retardance (composition C), wherein the polyfluortetraethylene mixture (composition B) is composed of polyfluortetraethylene particles and an organic polymer.

Description

technical field [0001] The invention relates to a flame-retardant polycarbonate resin composition. More specifically, it relates to a flame-retardant polycarbonate resin composition excellent in appearance and hydrolysis resistance. Background technique [0002] Aromatic polycarbonate resins are widely used in various fields because they are transparent and have excellent flame retardancy, heat resistance, and strength. However, the flame retardancy of aromatic polycarbonate resins cannot be said to be sufficient in some cases in view of the thinning of electronic and electrical equipment parts, OA-related parts, and the like in recent years. Moreover, recently, high flame retardancy conforming to V-0 in UL standard (Underwriters Laboratories Inc)-94 is required in many cases, and its use is limited. Furthermore, in order to obtain high flame retardancy, it is important to suppress resin dripping during combustion. [0003] In general, a method of adding polytetrafluoroet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/098C08K5/42C08J5/00C08L27/18
Inventor 大平洋二友田琢也
Owner TEIJIN KASEK KK
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