Scratch-resistant polypropylene composition and preparation method thereof

A polypropylene composition and scratch-resistant technology, which is applied in the field of polypropylene composition and its preparation, can solve the problems of product appearance and adverse effects of use, surface stickiness and frosting, lubricant precipitation, etc., and achieve good impact resistance , low cost, good scratch resistance effect

Active Publication Date: 2011-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anti-scratch agent (lubricant) commonly used in the prior art will cause some problems, such as after long-term use, the lubricant will precipitate, and the surface will be sticky and frosty, which will have obvious adverse effects on the appearance and use of the product.

Method used

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  • Scratch-resistant polypropylene composition and preparation method thereof
  • Scratch-resistant polypropylene composition and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0026] 1. Preparation of scratch-resistant agent

[0027] Fully vulcanized powdered styrene-butadiene rubber (Beijing Chemical Industry Research Institute, VP101, average particle size 0.1 μm) was heated to 80 ° C, placed in a high-speed mixer, and under high-speed stirring, naphthenic oil (Tianjin Dagang Oil Refinery, Circosol 410) and / or linear polymethylsiloxane lubricant (Beijing Second Chemical Factory, 201), stirred for 30 seconds, released and placed at room temperature for 24 hours to obtain a scratch-resistant agent. The weight ratio of the components is shown in the respective examples.

[0028] 2. Preparation of scratch-resistant polypropylene

Embodiment 1

[0030] Polypropylene (Sinopec Beijing Yanshan Petrochemical Company, brand: K9020, melt index 20g / 10min), talc powder (Dalian Fuji Mining Co., Ltd., 2500 mesh), ethylene-propylene rubber (Dow Chemical Company, NORDEL IP), Branched ethylene propylene rubber (Compton Company of the United States, 498), anti-scratch additive A (the weight ratio of fully vulcanized powder rubber and naphthenic oil is 100:50), antioxidant (Swiss Ciba Specialty Chemical Company, B225 ), a light stabilizer (TINUVIN XT 855 from Ciba Specialty Chemicals, Switzerland) were evenly stirred, and extruded and granulated using a twin-screw at 190-230°C. The samples were prepared by injecting the injection machine, and the mechanical properties, scratch resistance and other properties were tested. The results are shown in Table 1. The specific formula is shown in Table 1, wherein the contents of each component are calculated in parts by weight.

Embodiment 2

[0032] Except that the anti-scratch additive B (the weight ratio of fully vulcanized powder rubber and linear polymethylsiloxane lubricant is 100:35) was used to replace the anti-scratch additive A. All the other are the same as in Example 1, and the specific formula and test results are shown in Table 1.

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Abstract

The invention provides a scratch-resistant polypropylene composition which comprises the following blended components in parts by weight: 100 parts of polypropylene resin and 0.05-30 parts of scratch-resistant agent, wherein the scratch-resistant agent is formed by blending the following components in parts by weight: 100 parts of full-vulcanized powdered butadiene styrene rubber, 1-100 parts of hydrocarbon oil and/or 1-200 parts of polysiloxane lubricant. The polypropylene composition not only has good mechanical properties of impact resistance, rigidity and the like, but also has good scratch resistance. Moreover, after the polypropylene resin is used for long time, the appearance of the product can not change. The preparation method is simple. The polypropylene composition is applicable to the products of automobile interior and exterior trim parts, electronic and electrical shells and the like.

Description

technical field [0001] The invention relates to a polypropylene composition and a preparation method thereof. Specifically, it relates to a scratch-resistant polypropylene composition and a preparation method thereof. technical background [0002] Polypropylene has the advantages of high heat resistance, good fatigue resistance, good electrical insulation, good chemical corrosion resistance and good processing formability, and is low in price, light in weight and easy to recycle. Therefore, it is widely used in electronic appliances, automobile industries, etc. There are a wide range of applications in the field. However, the surface hardness of polypropylene material is low, and it is easy to be scratched under the action of external force, so it is subject to certain restrictions when it is used in fields with high appearance requirements such as electrical casings and automotive interior parts. Especially for automotive interior parts, such as instrument panels, door pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L9/06C08K5/01C08L83/04
Inventor 金滟丁树岩元文芳蔡涛刘善元石胜鹏张静陈绍梅
Owner CHINA PETROLEUM & CHEM CORP
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