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Low odor, scratch resistant and soft tactility polypropylene composition and preparation method thereof

A polypropylene composition and a scratch-resistant technology are applied in the field of soft-touch polypropylene compositions and their preparation, which can solve the problems of environmental protection, difficulty in recycling, poor processing performance, lack of soft-touch feeling, and the like, and achieve enhanced soft-touch feeling. , Low linear expansion coefficient, high mechanical properties

Active Publication Date: 2015-03-11
SILVER AGE ENG PLASTICS DONGGUAN +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To sum up, the polypropylene composition in the prior art has the following defects: 1) It does not have a soft touch or has a soft touch but has problems of environmental protection and recycling; 2) Yellowing, easy aging, and strong odor 3) Poor fluidity , The processing performance is not good enough 4) There are defects such as pitting and bright printing on the surface of the material

Method used

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  • Low odor, scratch resistant and soft tactility polypropylene composition and preparation method thereof
  • Low odor, scratch resistant and soft tactility polypropylene composition and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0063] Weigh 59wt% polypropylene 1, 25wt% copolymer of ethylene and propylene, 5wt% hyperbranched (ethylene and methyl acrylate) copolymer 1, 0.1wt% primary antioxidant 1010, 0.1wt% secondary antioxidant Oxygen agent P-EPQ, 0.5wt% light stabilizer 622 and 0.3wt% black smoke were mixed in a high-speed mixer for 3 minutes at a speed of 1000 rpm, and then 10wt% glass fiber 1 was added together with the above mixture through side feeding Melt and knead in a twin-screw extruder, extrude and granulate. The process is: 190°C in the first zone, 210°C in the second zone, 220°C in the third zone, and 200°C in the fourth zone; the residence time of the entire extrusion process is 1 minute, and the pressure is 21MPa.

Embodiment 2

[0065] Weigh 60wt% polypropylene 1, 20wt% copolymer of ethylene and propylene, 5wt% hyperbranched (ethylene and methyl acrylate) copolymer 2, 0.5wt% primary antioxidant 1010, 0.5wt% secondary antioxidant Oxygen agent P-EPQ, 0.5wt% light stabilizer UV-P, 0.5wt% light stabilizer 622 and 3wt% black smoke were mixed in a high-speed mixer for 3 minutes at a speed of 1000rpm, and then 10wt% glass fiber 2 was passed through The side feed and the above mixture are fed into a twin-screw extruder for melting and kneading, extruding and granulating. The process is as follows: the first zone is 190°C, the second zone is 210°C, the third zone is 220°C, and the fourth zone is 200°C; the residence time of the entire extrusion process is 1 min, and the pressure is 22MPa.

Embodiment 3

[0067] Weigh 37.1wt% polypropylene 1, 35wt% copolymer of ethylene and propylene, 7wt% hyperbranched (ethylene and methyl acrylate) copolymer 1, 0.2wt% primary antioxidant 1010, 0.2wt% auxiliary Antioxidant P-EPQ, 0.1wt% light stabilizer UV-P, 0.1wt% light stabilizer 622 and 0.3wt% black smoke were mixed in a high-speed mixer for 4 minutes at a speed of 1000rpm, and then 20wt% glass fiber 1 The mixture is fed into a twin-screw extruder for melting and kneading through side feeding, and extruded for granulation. The process is: 200°C in the first zone, 200°C in the second zone, 210°C in the third zone, and 200°C in the fourth zone; the residence time of the entire extrusion process is 2 minutes, and the pressure is 24MPa.

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Abstract

The invention relates to a polypropylene composition, in particular to a low odor, scratch resistant and soft tactility polypropylene composition and a preparation method thereof. The polypropylene composition comprises the following raw materials in percent by weight: 30 to 60 percent of polypropylene, 20 to 35 percent of copolymer of ethylene and propylene, 10 to 30 percent of glass fiber, 5 to 10 percent of hyperbranched (ethylene and methyl acrylate) copolymer, 0.2 to 1 percent of an antioxydant, 0.2 to 1 percent of a light stabilizer, and 0.3 to 3 percent of an additive, wherein the total amount of the raw materials is 100 percent. The invention further provides the production method of the polypropylene composition. The polypropylene composition has the characteristics of high mechanical performance, strong impact resistance, scratch resistance, low odor, soft tactility, low linear expansion coefficient and the like.

Description

technical field [0001] The invention relates to a polypropylene composition, in particular to a low-odor, scratch-resistant, soft-touch polypropylene composition and a preparation method thereof. Background technique [0002] In the prior art, mineral-filled polypropylene has the characteristics of low density, excellent mechanical properties, corrosion resistance, environmental protection, low price, and favorable recycling, and is widely used in interior and exterior parts of automobiles. In recent years, the rapid development of the automobile industry has put forward higher and higher requirements for interior and exterior materials; such as instrument panels, door panels, pillars, bumpers, etc. require high strength, impact resistance, scratch resistance, low odor, and good dimensional stability Other properties; Compared with mineral filled polypropylene, glass fiber reinforced polypropylene has higher strength, excellent scratch resistance and low linear expansion coe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08K13/06C08K7/14B29C47/92B29B9/06B29C48/92
CPCB29B9/06B29C48/92C08L23/0815C08L23/14C08L2205/02C08L2205/03C08L23/0869C08K13/04C08K7/14C08K5/1345C08K3/04
Inventor 刘冉高翔彭志宏傅轶谭颂斌
Owner SILVER AGE ENG PLASTICS DONGGUAN
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