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Thermoplastic resin composition and molded body thereof

A technology for resin compositions and molded products, applied in the field of thermoplastic resin compositions, can solve the problems of component size limitation, shape design restriction, insufficient heat resistance, etc., and achieve the effects of high design freedom, excellent designability, and small deformation.

Active Publication Date: 2017-05-10
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of a sintering process using a melamine resin coating, etc., the parts themselves may be deformed due to high temperatures due to insufficient heat resistance of the resin composition, which may restrict the shape design or affect the Widget size creates limitations

Method used

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  • Thermoplastic resin composition and molded body thereof
  • Thermoplastic resin composition and molded body thereof
  • Thermoplastic resin composition and molded body thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0200] Hereinafter, examples which express the present invention more specifically will be described, but the present invention is not limited to these examples.

[0201] The "parts" and "%" in the following measurement conditions, examples, etc. mean "parts by weight" and "% by weight", respectively.

[0202] First, the materials used and the measurement method will be described below.

[0203]

[0204] (Component A) Aromatic polyester

[0205] (Component A1) Polyalkylene terephthalate

[0206] A1-1: Bell Polyester Products Co., Ltd., polyethylene terephthalate resin (PET) "EFG-70", IV value: 0.70. This product is PET made with germanium (Ge) catalyst. The Ge concentration in component A1-1 is 25-35 ppm.

[0207] A1-2: manufactured by Teijin Co., Ltd., PET "TRN-8550FF", IV value: 0.75. This product is PET made with phosphorus-titanium catalyst. The Ti concentration in component A1-2 is 10-15 ppm.

[0208] A1-3: manufactured by Mitsubishi Chemical Corporation, PET "NOVAPEX (registered...

manufacture example 1

[0291] (Production Example 1) Production of polyoxyalkylene-modified polyalkylene terephthalate (A2-1)

[0292] 80 parts by weight of bishydroxyethyl terephthalate (BHET) as the raw material of polyethylene terephthalate (BHET), and double Polyoxyethylene diadduct of phenol A (average chain length of ethylene oxide unit is 15) "Bisol 30EN" (manufactured by Toho Chemical Co., Ltd.) 20 parts by weight, after nitrogen substitution in the gas phase, modified with polyoxyalkylene Based on the theoretical yield of polyalkylene terephthalate, 300 ppm of germanium dioxide and 3000 ppm of phenolic antioxidant "Irganox (registered trademark) 1010" (manufactured by BASF JAPAN Co., Ltd.) were added. After maintaining at 190°C for 2 hours, the temperature was slowly increased while slowly depressurizing with a vacuum pump. Finally, polycondensation was carried out at 280°C and 1 torr, and the pressure reduction was ended when a given stirring power was reached to terminate the reaction. The...

Embodiment 1～26、 comparative example 1～6

[0294] Polycarbonate resin composition

[0295] Aromatic polyester (component A), aromatic polycarbonate (component B), high heat-resistant aromatic polycarbonate (component C), graft copolymer (component D), olefinic copolymer (component E) , Silicic acid filler (component F), conductive filler (component G), phosphorus compound (component H), antioxidant (component J1), release agent (component J2), epoxy heat stabilizer (component J3) And the pigment (component J4) were pre-mixed in the proportions shown in Tables 1 to 3, and melt-kneaded at 310°C using a twin-screw extruder "TEX-44SS" (manufactured by Nippon Steel Co., Ltd.). The pellets. At this time, the silicate filler (component F) was supplied from the side feeder. Using the obtained pellets, a dumbbell-shaped test piece and a bar-shaped test piece were produced using an injection molding machine "FN-1000" (manufactured by Nissei Plastic Industries, Ltd.) with a cylinder temperature set to 300°C and a mold temperature ...

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Abstract

The present invention relates to a resin composition that contains 5-82 parts by weight of an aromatic polyester (component A), 0-50 parts by weight of an aromatic polycarbonate having a deflection temperature under load (as measured using the A method) of 110-140 DEG C (component B), 10-90 parts by weight of a highly heat-resistant aromatic polycarbonate having a deflection temperature under load (as measured using the A method) of 145 DEG C or higher (component C), 0-10 parts by weight of a graft copolymer containing 40-90 wt.% of a rubbery polymer (component D), 0-10 parts by weight of an ethylene-based copolymer (component E), 2.5-50 parts by weight of a silicate-based filler (component F), 0-10 parts by weight of an electrically conductive filler (component G) and 0-2 parts by weight of a phosphorus compound (component H) (here, the total quantity of all the components is 100 parts by weight), wherein the total quantity of component D and component E is 0.5-10 parts by weight, and the deflection temperature under load (as measured using the A method) of the composition is 130 DEG C or higher. By using this resin composition, it is possible to provide a resin molded body which is suitable for use as an exterior material / exterior panel member of an automobile, which ensures a coating appearance that is consistent with a metal portion, which exhibits heat resistance that can endure exposure to high temperatures during baking of a coating material, exhibits good surface characteristics, for which deformation caused by changes in coefficient of linear thermal expansion or humidity is suppressed, is lightweight, excellent in rigidity, impact properties, chemical resistance and adhesion to a coating film, and which exhibits good fluidity during processing.

Description

Technical field [0001] The present invention relates to a thermoplastic resin composition based on a filler-containing aromatic polycarbonate / aromatic polyester having excellent heat resistance and improved impact resistance, and further relates to suppression of temperature-induced dimensional changes of molded products, A thermoplastic resin composition that has small dimensional changes in molded articles due to humidity and excellent rigidity. Further, it relates to a molded product obtained from the above-mentioned resin composition, an outer panel member for an automobile made from the molded product, and also relates to an outer panel member for an automobile that has been sintered coated. Background technique [0002] In recent years, starting from energy issues and environmental issues, a substantial improvement in energy consumption efficiency has been required for automobiles. In order to promote the realization of such a demand through weight reduction, the demand fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/03B32B27/36C08K3/34C08K5/49C08L23/08C08L51/04C08L69/00
CPCB32B27/36C08K3/34C08K5/49C08L23/08C08L51/04C08L67/03C08L69/00C08L67/02C08L23/0869C08L51/06C08L51/085B05D1/007B05D3/0254B05D7/02B29C45/0001B29C45/0053B29C2045/0079B29K2067/00B29K2069/00B29K2105/0023B29K2509/00B29L2031/3005C08L2201/08C08L2205/035
Inventor 三枝一范
Owner KANEKA CORP
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