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Polycarbonate resin composition and molded body of the same

A technology of polycarbonate resin and composition, applied in the field of polycarbonate resin composition and its molded body, can solve the problems of small elongation, no effect of modifier, insufficient reaction of acid anhydride modified PO, and the like, Achieve low gloss, excellent fluidity and chemical resistance, excellent impact resistance and flexural strength

Inactive Publication Date: 2011-06-29
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in fact, it does not show the effect as a modifier of PC and PP, and the reaction between acid anhydride modified PO and OH is not sufficient, and the effect of improving elongation or preventing layer peeling is small

Method used

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  • Polycarbonate resin composition and molded body of the same
  • Polycarbonate resin composition and molded body of the same
  • Polycarbonate resin composition and molded body of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5 and comparative example 1～7

[0096] After dry mixing the ingredients according to the mixing ratios shown in Table 1 and Table 2, use a twin-shaft mixer (TEX44, manufactured by Japan Steel Works) at a set temperature of 250°C to prolong the stagnation time and increase the number of mixing blocks. Melt-kneading was carried out while discharging the amount to obtain pellets.

[0097] After drying the obtained pellets at 120°C for 6 hours or more, test pieces were prepared by injection molding (injection molding temperature 270°C, mold temperature 80°C), and physical properties were evaluated according to the following methods. The results are shown in Table 1 and Table 2.

[0098]

[0099] (1) Tensile strength, tensile modulus of elasticity, tensile elongation (test piece thickness 3.0mm)

[0100] According to JIS K 7162

[0101] (2) Izod impact strength (with notch) (test piece thickness 3.0mm)

[0102] According to JIS K 7110

[0103] (3) High-speed drop weight impact test (test piece 70×70×3mm fla...

Embodiment 6 and 7

[0122] To the compositions of Examples 1 and 2, 3000 ppm of carbon black (manufactured by Mitsubishi Chemical Corporation) was further added for black coloring, and the same pellets as in Example 1 were obtained. Using the pellets, a corrugated flat plate of 140 x 140 x 2 mm was molded by injection molding and used as a test piece. Using a scratch tester (Scratch Tester) manufactured by Kato-Tec, a scratch test was performed under the conditions of a surface load of 30 N and a bead printing speed of 100 mm / sec on the test piece, and the evaluation of scratch whitening property was performed visually. In addition, its color tone was evaluated by visual inspection. The evaluation results are shown in Table 3.

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PUM

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Abstract

Disclosed is a polycarbonate resin composition containing per 100 parts by mass of a resin component which is composed of 50 to 94% by mass of (A) an aromatic polycarbonate resin having a viscosity average molecular weight of 16,000 to 26,000, 1 to 15% by mass of (B) a polyolefin resin and / or a polyolefin elastomer containing 3 to 30% by mass of epoxy groups or glycidyl groups, and 5 to 40% by mass of (C) a polypropylene resin produced by slurry polymerization, and 0.001 to 1 part by mass of (D) at least one member selected from the group consisting of aliphatic amine salts, aromatic amine salts, ammonium hydroxide and hydroxylammonium salts. The polycarbonate resin composition is obtained by melt-mixing, and has excellent impact resistance, bending strength, fluidity and chemical resistance. The polycarbonate resin composition hardly suffers from lamellar separation after molding, and can have a low gloss. A molded body of the polycarbonate resin composition is also disclosed.

Description

technical field [0001] The present invention relates to a polycarbonate resin composition and its molded body. Specifically, it relates to a polycarbonate resin that does not exhibit delamination after molding, has excellent impact resistance, bending strength, fluidity, and chemical resistance, and is used for housings of automobile parts, electronic equipment, and information equipment, etc. Compositions and their shaped bodies. Background technique [0002] As automotive parts, polypropylene fillers are often used for filling, but this has problems such as scratch resistance and whitening, grain transfer, and poor welding appearance. On the other hand, although polycarbonate (PC) has the advantages of excellent mechanical and physical properties represented by impact strength, it has disadvantages such as poor fluidity and chemical resistance. [0003] As its improvement method, it has been proposed that PC / ABS blending for fluidity and PC / polyester (PBT, PET) blending ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/17C08L23/00C08L23/10
CPCC08K5/19C08K5/17C08L23/0884C08L69/00C08L23/10C08L51/06C08L23/0892C08L2666/06C08L2666/02
Inventor 野村学菅野进
Owner IDEMITSU KOSAN CO LTD
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