A polarity-modified polypropylene composite material and a preparing method thereof

A technology for composite materials and polypropylene, which is applied in the field of polar modified polypropylene composite materials and its preparation, can solve the problems of high cost of addition, damage to the mechanical properties of polypropylene systems, and expensive polymer polar additives. Achieve the effects of improving polarity, easy implementation and operation, and excellent mechanical properties

Inactive Publication Date: 2014-10-08
CGN JUNER NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method has two disadvantages: ① adding a large amount of polymer polar substances will cause great damage to the mechanical properties of the polypropylene system, especially for polypropylene systems using polypropylene recycled materials; ② polymer polar additives Generally expensive, the cost of adding such a large number is too high

Method used

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  • A polarity-modified polypropylene composite material and a preparing method thereof
  • A polarity-modified polypropylene composite material and a preparing method thereof
  • A polarity-modified polypropylene composite material and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 72 parts by weight of polypropylene, 10 parts by weight of POE (8150), 14 parts by weight of talcum powder, 3 parts by weight of EVA, 0.2 parts by weight of glycerol monostearate, 0.4 parts by weight of antioxidant 1010, 0.2 parts by weight of antioxidant 168. Add 0.2 parts by weight of carbon black into a high-speed mixer with a rotation speed of about 1000rpm and mix for 5 minutes, then put the mixture into a twin-screw extruder, extrude and granulate at a temperature of 190°C to 220°C, and obtain extremely Modified polypropylene composites.

[0042] The prepared polar-modified polypropylene composite was injection-molded into a bumper, and the firmness of the paint was verified by the cross-scratch method after spraying. By comparison, it was found that the bumper injection-molded from the material provided in Example 1 had good paint adhesion, and the paint did not fall off after being scratched and pulled three times with 3M adhesive tape. And the bumper that is i...

Embodiment 2

[0044] 72 parts by weight of polypropylene, 10 parts by weight of POE (8150), 14 parts of talcum powder, 3 parts by weight of EAA, 0.2 parts by weight of glycerol monostearate, 0.4 parts by weight of antioxidant 1010, 0.2 parts by weight of anti-oxidant Add oxygen agent 168 and 0.2 parts by weight of carbon black into a high-speed mixer with a rotation speed of about 1000rpm and mix for 5 minutes, then put the mixture into a twin-screw extruder, and extrude and granulate at a temperature of 190°C to 220°C. A polar-modified polypropylene composite material is obtained.

[0045] The prepared polar-modified polypropylene composite was injection-molded into a bumper, and the firmness of the paint was verified by the cross-scratch method after spraying. The paint firmness of the modified polypropylene bumper parts was also verified by the cross scraping method, and it was found that the bumper injection molded from the material provided in Example 2 had good paint adhesion and did ...

Embodiment 3

[0047] With 72 parts by weight of polypropylene 72 parts, 10 parts by weight of POE (8150), 15.5 parts of talcum powder, 1.5 parts by weight of EAA, 1.5 parts by weight of EVA, 0.2 parts by weight of glycerol monostearate, 0.4 parts by weight of antioxidant 1010 , 0.2 parts by weight of antioxidant 168, 0.2 parts by weight of carbon black were added to a high-speed mixer with a rotation speed of about 1000rpm and mixed for 5 minutes, and then the mixture was put into a twin-screw extruder and extruded at a temperature of 190°C to 220°C Obtained by granulation to obtain a polar modified polypropylene composite material.

[0048] The prepared polar-modified polypropylene composite was injection-molded into a bumper, and the firmness of the paint was verified by the cross-scratch method after spraying. The paint firmness of the modified polypropylene bumper was also verified by the cross scraping method, and it was found that the bumper injection-molded from the material provided...

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Abstract

A polarity-modified polypropylene composite material and a preparing method thereof are disclosed. The composite material comprises following components by weight: 60-90% of polypropylene, 5-15% of a flexibilizer, 0-30% of a mineral filling material, 1-3% of a polarity additive, 0.1-0.3% of an assistant polarity additive, 0.4-3% of an anti-ageing agent and 0-0.5% of a coloring agent. The assistant polarity additive is a nonionic ester type surfactant. According to the composite material and the preparing method thereof, by addition of an extremely low amount of the polarity additive and the assistant polarity additive, the adhesion force of the composite material and a coating is enhanced and the composite material maintains excellent mechanical properties. The method can be performed by adoption of a double-screw extruder at present and has characteristics of simple preparation, easy implementation and operation, easy industrial production and wide application prospect.

Description

technical field [0001] The invention relates to the field of polypropylene composite materials, in particular to a polar-modified polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene has always been concerned by the automobile industry and the plastics industry because of its advantages such as low density, high strength, high hardness, wear resistance, bending fatigue resistance, high heat resistance, excellent moisture resistance and chemical resistance, easy processing and molding, and low price. focus. Modified polypropylene materials for bumpers not only need good impact performance and processing performance, but also good paint adhesion performance. However, polypropylene is a non-polar material with low surface tension. The paint firmness of the bumper directly injection-molded with unmodified polypropylene material is insufficient. Scratch resistance, moisture resistance, water resistance and adhesion tests...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L51/06C08L23/08C08K13/02C08K5/103
CPCC08L23/12C08L2205/03C08L2205/035
Inventor 孙心克陈玉莹汪家宝安孝善黄志杰
Owner CGN JUNER NEW MATERIALS
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