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Resin composition and resin product

A resin composition and resin technology, applied in the field of resin composition, can solve problems such as not being able to fully meet the requirements of thinning thickness

Inactive Publication Date: 2011-02-02
TOYODA GOSEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is considered that this polypropylene resin composition also cannot sufficiently meet the thickness reduction requirements of resin articles for automobile interior and exterior decoration composed of polypropylene resin.

Method used

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  • Resin composition and resin product
  • Resin composition and resin product
  • Resin composition and resin product

Examples

Experimental program
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Effect test

Embodiment

[0127] The resin composition of the present invention is used as figure 1 The instrument panel 10 is shown among others.

[0128] As examples of the present invention, physical properties of 17 mixtures shown in Table 1 below were measured. In addition, as a comparative example, physical properties of 17 types of mixtures shown in Table 2 below were measured. In the mixture column of each table, the unit of the mixing amount of each raw material component is mass %. However, the amount of organic peroxide *1 (butyl peroxide) added is the mass parts relative to 100 mass parts of the total amount of other raw material components.

[0129] In addition, with regard to Examples 4, 5, 6, 8, 12 and Comparative Examples 6 and 7, the state of the talc powder and the rubber particles (average measured particle diameter, average distance between particles) on the cross-section of the molded body of each sample was measured, The results are shown in Table 3.

[0130] The raw material ...

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Abstract

To provide: a resin composition which is improved in fluidability, stiffness and impact resistance and therefore can achieve the reduction in wall thickness of a resin product for automotive interior / exterior applications comprising a polypropylene resin,and a resin product produced from the resin composition. [MEANS FOR SOLVING PROBLEMS] Disclosed is a resin composition comprising: 30 to 65 mass% of an ethylene-propylene block copolymer having a melt flow rate of 60 to 120 g / 10 minutes and a Charpy impact strength of 3 kJ / m2 or more,0 to 25 mass% of a homopolypropylene resin having a melt flow rate of 10 g / 10 minutes or more and a modulus of elasticity of 2000 MPa or more,5 to 20 mass% of an ethylene-a-olefin copolymer rubber having a Mooney viscosity of 20 to 75 or a styrene-ethylene butylene-styrene copolymer having a styrene component content of 15 to 30 mass%,and 23 to 37 mass% of talc having an average particle diameter of 8 [mu]m or less.

Description

technical field [0001] The present invention relates to a resin composition and a resin product formed by molding the resin composition. Background technique [0002] At present, resin products for interior and exterior decoration of automobiles made of polypropylene resin are mainly resin products with a thickness of 2 mm or more. For example, instrument panels are mostly about 3mm, bumpers are mostly 2.5-3.5mm, and other interior decoration products are mostly 2.2-3mm. Therefore, the physical properties of the polypropylene resin composition used in these resin products can also fully satisfy the following requirements: as fluidity, the melt flow rate (MFR) at 230° C. and 21.2 N is 30 g / 10 minutes or less and, as rigidity, the flexural modulus at 23° C. is 2500 MPa or less. [0003] However, recently, especially in the field of automotive interior and exterior resin products, there is a view that, in order to contribute to the global environment (for example, to reduce C...

Claims

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Application Information

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IPC IPC(8): C08K3/34C08L53/00
CPCC08L23/0815C08L23/16C08L53/025C08K3/346C08L23/12C08L2205/03C08L23/10C08L53/00C08L2666/02
Inventor 小林政男小木曾浩一伊藤克志末永清
Owner TOYODA GOSEI CO LTD