Thermoplastic resin composition and molded article comprising same
A technology of thermoplastic resin and composition, which is applied in the field of thermoplastic resin composition, can solve the problems of insufficient flame retardancy improvement effect of polylactic acid resin, difficulty in heat resistance, improvement of molding processability and impact resistance, etc., to achieve flame retardancy Excellent performance, excellent impact resistance
Inactive Publication Date: 2014-03-12
TORAY IND INC
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Problems solved by technology
However, in the invention described in Patent Document 1 and the invention described in Patent Document 2, the effect of improving the flame retardancy of the polylactic acid resin is insufficient, and at the same time, it is difficult to sufficiently improve heat resistance, moldability, and impact resistance. subject
Method used
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Embodiment 1～17、 comparative example 1～4
[0178] Mix the raw materials shown in Tables 1 to 3 in the mixing ratios shown in Tables 1 to 3, from a twin-screw extruder with a vent with a screw diameter: 30 mmφ, a ratio of screw length L to screw diameter D L / D = 45.5 It is supplied from the raw material supply port of the machine "TEX30α" (manufactured by Nippon Steel Works). Under the conditions of setting temperature: 210°C, screw speed: 200rpm, and supply rate: 15kg / h, melt kneading was carried out, and a granular thermoplastic resin composition was obtained by a granulator, and the following (1)-( 4) Evaluation.
[0179] (1) Flame retardancy evaluation (UL-94 combustion test)
[0180] The pellets produced according to each condition were dried with hot air at 80°C for 8 hours, and then injection molded at a barrel temperature of 210°C and a mold temperature of 80°C using an injection molding machine (SG75H-MIV manufactured by Sumitomo Heavy Industries, Ltd.) to obtain a molded product. 127mm x 12.7mm x 1.6mm thick...
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Abstract
The invention provides a thermoplastic resin composition which exhibits excellent heat resistance, moldability and impact resistance and which exhibits particularly excellent flame retardancy, and a molded article comprising the same. A thermoplastic resin composition obtained by blending (B) 10 to 50 parts by weight of a flame retardant and (C) 1 to 20 parts by weight of a low melting point glass powder which has a median diameter (D50) of 3 to 6 [mu]m in a particle size distribution measurement and which has a softening temperature of 600 DEG C or lower, in (A) 100 parts by weight of a thermoplastic resin that contains a poly(lactic acid)-based resin.
Description
technical field [0001] Embodiments of the present invention relate to a thermoplastic resin composition excellent in heat resistance, moldability, and impact resistance, especially excellent in flame retardancy, and a molded article formed from the thermoplastic resin composition. Background technique [0002] Since polylactic acid resin has a high melting point and can be melt-molded, it is expected to be a practically excellent biodegradable polymer. In addition, the use of polylactic acid resin as a general-purpose polymer produced from biomass raw materials is also expected in the future, and its use as molded products is also expanding by molding such as injection molding and extrusion molding. The polylactic acid resin is also a thermoplastic resin with a small load on the environment. However, in order to apply polylactic acid resins to electrical and electronic equipment components, OA equipment components, and the like, improvements in heat resistance, molding proc...
Claims
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IPC IPC(8): C08L67/04C08K3/22C08K3/40C08K5/49C08K5/54C08L101/00C08L101/16
CPCC08L101/00C08K3/40C08K5/54C08K5/49C08K5/523C08K3/0058C08L101/16C08K3/34C08K5/521C08K5/5205C08K5/06C08L67/04C08K5/5435C08K3/22C08K2003/321C08K3/32C08K3/346C08K2003/2227C08K3/016C08L69/00C08L71/02C08L67/02
Inventor 尾上阳介佐藤大辅熊泽贞纪
Owner TORAY IND INC