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Thermoplastic resin composition and molded article thereof

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

Active Publication Date: 2019-08-16
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 article thereof
  • Thermoplastic resin composition and molded article thereof
  • Thermoplastic resin composition and molded article thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0200] Hereinafter, although the Example which expresses this invention more concretely is demonstrated, this invention is not limited to these Examples.

[0201] "Parts" and "%" in the following measurement conditions, Examples, etc. represent "parts by weight" and "% by weight", respectively.

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

[0203]

[0204] (Component A) Aromatic polyester

[0205] (Component A1) Polyalkylene terephthalate

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

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

[0208] A1-3: manufactured by Mitsubishi Ch...

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 a raw material of polyethylene terephthalate, and bis Polyoxyethylene diadduct of phenol A (average chain length of ethylene oxide units: 15) "Bisol 30EN" (manufactured by Toho Chemical Co., Ltd.) 20 parts by weight, the gas phase part was substituted with nitrogen, and then 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 being held at 190°C for 2 hours, the temperature was slowly raised while the pressure was slowly reduced using a vacuum pump. Finally, polycondensation was carried out at 280° C. and 1 torr, and the decompression was terminated when a given stirring power was reached to terminate the rea...

Embodiment 1～26、 comparative example 1～6

[0294] polycarbonate resin composition

[0295] Aromatic polyester (ingredient A), aromatic polycarbonate (ingredient B), highly heat-resistant aromatic polycarbonate (ingredient C), graft copolymer (ingredient D), and olefinic copolymer (ingredient E) , Silicic acid filler (ingredient F), conductive filler (ingredient G), phosphorus compound (ingredient H), antioxidant (ingredient J1), release agent (ingredient J2), epoxy heat stabilizer (ingredient J3) and the pigment (component J4) were premixed at the ratios shown in Tables 1 to 3, and were melt-kneaded at 310°C using a twin-screw extruder "TEX-44SS" (manufactured by Nippon Steel Corporation) to produce pellets. At this time, the silicate-based 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 Plastics Co., Ltd.) with a barrel temperature of 300°C an...

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PUM

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Abstract

The present invention relates to a resin composition comprising 5 to 82 parts by weight of an aromatic polyester (component A) whose heat distortion temperature (A method) measured based on ASTM D648 is 110°C or higher and 140°C or lower. 0 to 50 parts by weight of carbonate (component B), 10 to 90 parts by weight of highly heat-resistant aromatic polycarbonate (component C) with a heat distortion temperature (method A) measured based on ASTM D648 of 145°C or higher, including 40 0-10 parts by weight of the graft copolymer (component D) of a rubber-like polymer whose glass transition temperature (Tg) is -10°C or less to 90% by weight, and 0-10 parts by weight of the olefinic copolymer (component E) , 2.5 to 50 parts by weight of a silicate filler (component F), 0 to 10 parts by weight of a conductive filler (component G), and 0 to 2 parts by weight of a phosphorus compound (component H) (wherein the total amount of all components is set as 100 parts by weight), wherein the total amount of component D and component E is 0.5 to 10 parts by weight, and the heat distortion temperature (method A) of the resin composition is 130° C. or higher. By using the above-mentioned resin composition, it is possible to provide the uniformity of the painted appearance with the metal parts, heat resistance that can adapt to high temperature exposure during paint firing, good surface properties, linear thermal expansion, and humidity changes. It is a resin composition suitable as an automobile exterior / outer panel member, which has suppressed deformation, is lightweight, has excellent rigidity / impact properties / chemical resistance / coating film adhesion, and has 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 a temperature-induced dimensional change of a molded article is suppressed, The dimensional change of the molded article due to humidity is also small, and the thermoplastic resin composition is excellent in rigidity. Furthermore, it relates to the molded article obtained from the said resin composition, the outer panel member for automobiles produced from this molded article, and also relates to the outer panel member for automobiles which gave the baking coating. Background technique [0002] In recent years, in view of energy problems and environmental problems, significant improvements in energy consumption efficiency have been demanded for automobiles. In order to promote the realization of such a demand through weight reduc...

Claims

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Application Information

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Patent Type & Authority Patents(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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