Polypropylene resin composition for automobile door trims having impact and scratch resistance

A technology of polypropylene resin and automobile doors, which can be used in transportation and packaging, doors, vehicle parts, etc., and can solve the problems of reduced rubber content and no formula

Inactive Publication Date: 2006-01-25
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] While the industrial need for resins with excellent impact and mar resistance for vehicle door trim is known, there is as yet no technology and / or formulation that can impart the desired excellent resistance to door trim. impact and abrasion resistance while reducing the rubber content to less than about 5%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0057] In the amounts shown in Table 1, ingredients (A), (B), (C), (D) and (E) were placed in a Hansell mixer and mixed for 3 minutes. The mixture was extruded with an extruder at 190-250°C. It is then cooled and solidified to obtain a pelletized composition. The composition is extruded at 180-250°C depending on its melt index. Physical properties were measured by the methods described and the results are shown in Table 1.

Embodiment 6～7

[0059] As shown in Table 1, following the operating procedure of Example 1, the contents of ingredients (B) and (C) were changed simultaneously, and ingredient (D) was not included. Physical properties were measured by the methods described and the results are shown in Table 1.

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Abstract

A polypropylene resin composition for automobile door trims having superior impact resistance, rigidity and scratch resistance, and more particularly, to a partially-crosslinked polypropylene resin composition prepared by adding highly-crystalline polypropylene, partially-crosslinked polypropylene, polyethylene, optionally an ethylene copolymer rubber, and an inorganic filler.

Description

field of invention [0001] The present invention relates to a polypropylene-based resin composition for automotive door trim having excellent impact resistance, stiffness and scratch resistance, and more particularly the present invention relates to the addition of highly crystalline polypropylene, polyethylene and The composition prepared by the inorganic filler omits or reduces the use of expensive rubber, and also relates to an automobile door trim made from the composition. Background of the invention [0002] Automotive door trims are divided into single-layer type (exposed type) and three-layer type (skin / foam / core layer). The single-layer door trim is obtained by injection molding of polypropylene with rubber and inorganic fillers, and is mainly used in small cars. The three-layer type door trim has a PVC (polyvinyl chloride) surface layer, a PP (polypropylene) foam layer, and a polypropylene core layer, and is mainly used for medium or large cars. According to crash...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/10C08K3/00B60J5/00C08L23/14C08K5/14C08L23/06C08L23/16
CPCC08L23/16C08K5/14C08L23/06C08L23/10C08L2205/02C08L2666/06C08L23/14C08K3/00
Inventor 韩景植黄胜郁朴炳淳
Owner HYUNDAI MOTOR CO LTD
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