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Scratch-resistant low-emission automobile interior PP composite material and preparation method thereof

A technology for automotive interior and composite materials, applied in the field of polymer composite material modification, can solve the problems of heavy product odor, affecting the emission of final parts, high VOC, etc., to achieve improved mechanical properties, excellent scratch resistance and emission performance, improve the effect of aging resistance

Inactive Publication Date: 2020-11-10
5ELEM HI TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the synthesis of scratch-resistant agents, small molecules are difficult to completely remove, and will be released during processing, affecting the emission of the final product, resulting in heavier product odor and higher VOC

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A scratch-resistant and low-emission automotive interior PP composite material, each component is composed of the following parts by mass:

[0033] Copolymerized polypropylene (matrix material): 62wt.%;

[0034] Talc powder (enhancer): 30wt.%;

[0035] Ethylene-α-octene copolymer elastomer (toughener): 3wt.%;

[0036] Aliphatic polyketone (scratch-resistant agent): 4 wt.%;

[0037] Antioxidant (additive): 0.4wt.%;

[0038] Lubricant (additive): 0.2wt.%;

[0039] Light stabilizer (additive): 0.4wt.%.

[0040] The scratch-resistant and low-emission PP composite material can be prepared by the following method: take each raw material according to the formula, mix them thoroughly, add them to a twin-screw extruder, and mix them under the conditions of 230°C and a screw speed of 500 rpm. Refining, extruding and granulating.

Embodiment 2

[0042] A scratch-resistant and low-emission automotive interior PP composite material, each component is composed of the following parts by mass:

[0043] Copolymerized polypropylene (matrix material): 50wt.%;

[0044] Calcium carbonate (strengthener): 30wt.%;

[0045] Ethylene-α-butene copolymerized elastomer (toughener): 10wt.%;

[0046] Aliphatic polyketone (scratch-resistant agent): 9 wt.%;

[0047] Antioxidant (additive): 0.4wt.%;

[0048] Lubricant (additive): 0.2wt.%;

[0049] Light stabilizer (additive): 0.4wt.%.

[0050] The scratch-resistant and low-emission PP composite material can be prepared by the following method: take each raw material according to the formula, mix them thoroughly, add them to a twin-screw extruder, and mix them under the conditions of 230°C and a screw speed of 500 rpm. Refining, extruding and granulating.

Embodiment 3

[0052] A scratch-resistant and low-emission automotive interior PP composite material, each component is composed of the following parts by mass:

[0053] Copolymerized polypropylene (matrix material): 53wt.%;

[0054] Talc powder (enhancer): 15wt.%;

[0055] Calcium carbonate (strengthener): 15wt.%;

[0056] Ethylene-α-octene copolymer elastomer (toughener): 6 wt.%;

[0057] Ethylene-α-butene copolymer elastomer (toughener): 4 wt.%;

[0058] Aliphatic polyketone (scratch-resistant agent): 6 wt.%;

[0059] Antioxidant (additive): 0.4wt.%;

[0060] Lubricant (additive): 0.2wt.%;

[0061] Light stabilizer (additive): 0.4wt.%.

[0062] The scratch-resistant and low-emission PP composite material can be prepared by the following method: take each raw material according to the formula, mix them thoroughly, add them to a twin-screw extruder, and mix them under the conditions of 230°C and a screw speed of 500 rpm. Refining, extruding and granulating.

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Abstract

The invention discloses a scratch-resistant low-emission automobile interior PP composite material and a preparation method thereof. The composite material comprises the following components in partsby weight: 30-87.8 parts of a base material, 10-40 parts of reinforcing agents, 2-20 parts of a toughening agent, 0.1-10 parts of a scratch-resistant agent and 0.1-5 parts of additives. According to the invention, rigidity-toughness balanced co-polypropylene is used as the base material; calcium carbonate and talcum powder are used as reinforcing agents, so that the mechanical property of the compound is improved; aliphatic polyketone is adopted to replace a common scratch-resistant agent, so that the scratch resistance and the mechanical property of the material are improved, and meanwhile, the odor, VOC and other diffusivity of the low-molecular-weight scratch-resistant agent are reduced; the additives such as the antioxidant and the light stabilizer are adopted, so that the ageing resistance and the weather resistance of the material are improved. The PP composite material disclosed by the invention has the characteristics of balanced rigidity and toughness, excellent scratch resistance, excellent diffusivity and the like, well meets the requirements of automotive interior materials, and can be widely applied to the fields of machinery, building materials, sports and the like which need to slide or operate plastic parts.

Description

technical field [0001] The invention relates to the technical field of modification of polymer composite materials, in particular to a scratch-resistant and low-emission automotive interior PP composite material and a preparation method thereof. Background technique [0002] Modified polypropylene materials are widely used in automotive interiors, and are mainly used to manufacture instrument panels, door guards, sub-dashboards, pillar guards and other components. Polypropylene composite material, as the main material used in automotive interior parts, has obvious advantages in terms of processability and price, but due to its small surface hardness and poor scratch resistance, the surface of the material is easy to scratch. Scratches affect the user experience. [0003] At present, the improvement plan for scratch resistance is mainly to add silicone substances containing special functional groups. Part of the silicone molecules containing special functional groups acts as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/08C08L73/00C08K3/34C08K3/26
CPCC08L23/14C08L2201/08C08L2205/02C08L2205/025C08L2205/03C08L2205/035C08K2003/265C08L23/0815C08L73/00C08K3/34C08K3/26C08L23/08
Inventor 沙月华徐莉莉陈俊琛黄骥
Owner 5ELEM HI TECH CORP
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