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Anti-precipitation PP (polypropylene) compound for automotive interiors as well as preparation method of compound

An automotive interior and polypropylene technology, applied in the field of polymer materials and their molding processing, can solve the problems of poor compatibility, precipitation and stickiness, affecting the appearance and feel of automotive interior parts, and achieve excellent mechanical properties, light aging, etc. Excellent performance

Inactive Publication Date: 2015-04-29
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, polypropylene materials have been widely used in automobile interiors. In order to meet the necessary heat aging, light aging and processability requirements of automobile interiors, it is usually necessary to add a certain amount of polypropylene materials in the production process of automobile interiors. heat stabilizers, light stabilizers and processing aids, but polypropylene is a non-polar material, and heat stabilizers, light stabilizers and processing aids are usually more polar substances, added to non-polar polypropylene Due to the poor compatibility of acrylic resin, there will inevitably be precipitation and stickiness, which will affect the appearance and feel of automotive interior parts

Method used

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  • Anti-precipitation PP (polypropylene) compound for automotive interiors as well as preparation method of compound
  • Anti-precipitation PP (polypropylene) compound for automotive interiors as well as preparation method of compound
  • Anti-precipitation PP (polypropylene) compound for automotive interiors as well as preparation method of compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 94.4 kg of polypropylene PP S700, 0.2 kg of hindered phenol heat stabilizer 1010, 0.2 kg of phosphite heat stabilizer 168, 0.2 kg of hindered amine light stabilizer 770, 0.2 kg of processing aid EBS, 5 kg of compatibilizer Ma Anhydride-grafted polypropylene CA-100 is melt-mixed and dispersed in a twin-screw extruder with an aspect ratio of 40:1, extruded and pelletized at 220°C, and finally the product is obtained. The performance is as follows:

[0025] performance

Embodiment 2

[0027] 88.8 kg of polypropylene PP S700, 0.3 kg of hindered phenol heat stabilizer 1076, 0.3 kg of phosphite heat stabilizer 627A, 0.3 kg of hindered amine light stabilizer 944, 0.3 kg of processing aid zinc stearate, 5 kg of phase Compatibilizer maleic anhydride grafted polypropylene CA-100, 5 kg of compatibilizer DuPont ethylene / acrylate / maleic anhydride terpolymer 560D, melt-mixed in a twin-screw extruder with an aspect ratio of 40:1 Disperse, extrude and granulate at 210°C, and finally get the product. The performance is as follows:

[0028] performance

Embodiment 3

[0030] 83.4 kg of polypropylene PP Z30S, 0.4 kg of hindered phenol heat stabilizer 1076, 0.4 kg of phosphite heat stabilizer 627A, 0.4 kg of light stabilizer 622, 0.4 kg of processing aid calcium stearate, and 7 kg of toughening agent Ethylene-vinyl acetate copolymer EVA2825, 8 kg of compatibilizer ethylene / acrylate / glycidyl methacrylate terpolymer PTW, melt mixed and dispersed in a twin-screw extruder with an aspect ratio of 40:1, 230 ℃ extrusion granulation, and finally get the product. The performance is as follows:

[0031] performance

[0032] Photoaging properties

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Abstract

The invention discloses an anti-precipitation PP (polypropylene) compound for automotive interiors as well as a preparation method of the compound. The anti-precipitation PP compound for the automotive interiors consists of 57-99.5% of PP, 0.2-1wt% of a heat stabilizer, 0.2-1wt% of a light stabilizer, 0.1-1wt% of a processing aid, 0-20wt% of a compatilizer and 0-20wt% of a toughening agent. The preparation method comprises steps as follows: the PP, the heat stabilizer, the light stabilizer, the processing aid, the toughening agent and the compatilizer are molten, mixed and dispersed in a twin-screw extruder with the length-diameter ratio of (30-50):1, extrusion and granulation are performed, and the compound is obtained finally. The material has excellent mechanical performance, thermal aging performance, light aging performance as well as the excellent anti-precipitation tacky characteristic, and can meet the 400 h thermo-oxidative aging requirement of automotive interior PP materials, the interior PV1303 weather-proof standard 7-cycle experiment requirement regulated by Volkswagen main engine plants as well as the anti-precipitation tacky experiment requirement regulated by the PV1306 standard.

Description

technical field [0001] The invention relates to a precipitation-resistant polypropylene compound for automobile interior decoration and a preparation method thereof, belonging to the field of polymer materials and their molding processing. Background technique [0002] The rapid development of the petrochemical industry has provided a large amount of propylene monomer and ethylene monomer necessary for the synthesis of polypropylene, coupled with the continuous breakthrough of the metallocene catalyst technology for the synthesis of polypropylene and the improvement of the industrial synthesis process and equipment of polypropylene, Polypropylene raw materials with high fluidity, high rigidity, high impact and other characteristics are continuously introduced to the market. Polypropylene materials quickly seize the traditional ABS, PC / ABS, PBT and PA engineering due to its low cost and high performance. The market for plastics is widely used in automotive materials. [0003...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L51/06C08L23/08C08K5/134C08K5/526B29B9/06B29C47/92B29C48/92
CPCC08L23/12B29B9/06B29C48/92C08L2201/08C08L2205/02C08L2205/03C08L51/06C08K5/1345C08K5/526C08L23/0869C08K5/098C08L23/0853
Inventor 陈延安孙刚周英辉程文超赵斌陈桂吉李志平李国明
Owner SHANGHAI KINGFA SCI & TECH