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Polypropylene resin composition

A technology of polypropylene resin and composition, which is applied in the field of vibration-absorbing materials, and can solve problems such as limitation of molding processability, weight of the product itself, and insufficient vibration-damping performance

Inactive Publication Date: 2020-07-10
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, composite materials have limitations in formability due to lamination of different raw materials, and there is a problem that the product itself becomes heavier due to the use of metal steel sheets.
In addition, alloy-type materials are heavy because only metal is used, and their vibration damping performance is insufficient

Method used

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  • Polypropylene resin composition
  • Polypropylene resin composition
  • Polypropylene resin composition

Examples

Experimental program
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Effect test

Embodiment

[0129] Hereinafter, the present invention will be described in detail using Preparation Examples, Examples and the like, but the present invention is not limited to such Examples and the like.

[0130] [Preparation of Elastomers with Polar Functional Groups]

preparation example 1

[0132] Using a co-rotating intermeshing twin-screw extruder (manufactured by Nippon Steel Works, TEX-28V, L / D=42, D=28), 100 parts by mass of SEBS, 6.0 parts by mass of maleic anhydride, and organic The oxide, 0.1 part by mass of dicumyl peroxide, was reacted and kneaded at 260° C., and subjected to strand cut (strand cut) to obtain pellets of maleic anhydride-modified SEBS (abbreviated as “MAH-SEBS”). In addition, the obtained pellets were dehumidified and dried at 80° C. for 3 hours so that the water content would be 1000 ppm or less. The resulting pellets were then washed with acetone for 3 hours under reflux to remove residual monomers. The addition amount of maleic anhydride in MAH-SEBS was measured by acid value titration. The results are shown in Table 1. In addition, the addition amount of maleic anhydride is a value with respect to 100 mass parts of SEBS.

preparation example 2

[0134] A pellet of maleic anhydride-modified SIBS (abbreviated as "MAH-SIBS") was obtained in the same manner as in Preparation Example 1 except that SIBS was used instead of SEBS. The obtained pellets were subjected to various treatments for dehumidification drying and residual monomer removal as in Preparation Example 1. The addition amount of maleic anhydride in MAH-SIBS was measured by acid value titration. The results are shown in Table 4. In addition, the addition amount of maleic anhydride is a value with respect to 100 mass parts of SIBS.

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Abstract

The present invention relates to a polypropylene resin composition containing a polypropylene resin, elastomers having a polar functional group, and a filler material. This polypropylene resin composition can be favorably used in the manufacture of acoustic devices, electric devices, vehicles, buildings, and products such as industrial devices.

Description

technical field [0001] The invention relates to a polypropylene resin composition and a manufacturing method thereof. More specifically, it relates to a polypropylene resin composition which can be used as a vibration damping material in audio equipment, electrical appliances, vehicles, buildings, industrial equipment, etc., and a method for producing the same, and to imparting vibration damping properties to the resin composition additives and damping materials containing the polypropylene resin composition. Background technique [0002] In recent years, various types of equipment have been required to take vibration countermeasures, especially in the fields of automobiles, home appliances, precision equipment, etc., vibration countermeasures have become necessary. In general, materials with high vibration damping properties include: a metal plate bonded with a vibration absorbing material such as rubber or asphalt; or a vibration damping steel plate in which a vibration a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/10C08J3/20C08J3/22C08L53/02
CPCC08L23/12C08J3/226C08J2323/12C08J2453/02C08J2409/06F16F1/3605F16F2224/025F16F15/08C08G59/04C08K2003/265C08J3/005C08F287/00C08L53/025C08L51/04C08K3/40C08K3/34C08L63/08C08F222/06C08J3/22C08J2425/10C08J2447/00C08L23/26F16F2226/00
Inventor 小田义朗佐藤奎都
Owner KAO CORP