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Low gloss polypropylene composition and preparation method thereof

A polypropylene composition and polypropylene technology, applied in the field of polypropylene compositions, can solve the problems that have not yet been given a good solution, the mechanical properties of the product or the decline of the matting performance, and achieve good matting performance, easy operation, good resistance The effect of impact properties

Active Publication Date: 2012-12-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the above requirements, people often need to add mineral fillers, rubber or inorganic matting agents to the polypropylene composition, but the above methods usually reduce the mechanical properties or matting properties of the product
The current patent has not yet given a good solution

Method used

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  • Low gloss polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] Preparation of matting modifier:

[0025] (1) Matting modifier A

[0026] Fully vulcanized powdered nitrile rubber (VP-401, average particle size 0.1 μm, gel content 90wt%; Sinopec Beijing Research Institute of Chemical Industry) and grafted polypropylene (g-PP, American EXXON company, brand 4401, maleic anhydride Grafting rate 2.5%) in a weight ratio of 1:0.5, mixed uniformly to prepare matting modifier A. Its specific formulation is shown in Table 1.

[0027] (2) Matting modifier B

[0028] Fully vulcanized powdered nitrile rubber (same as above) and grafted polypropylene (same as above) are mixed uniformly at a weight ratio of 1:0.3 to prepare matting modifier B.

[0029] (3) Matting modifier C

[0030] Fully vulcanized powdered nitrile rubber (same as above), grafted polypropylene (same as above) and silicon dioxide (U.S. Grace Company, brand C807, particle diameter 7 μm, pH value 3.3, porosity 2ml / g) in a weight ratio of 1 : 0.5: 0.5, mixed uniformly to prepar...

Embodiment 1

[0038] Polypropylene K9026 (melt index 26g / 10min, Sinopec Beijing Yanshan Petrochemical Company), matting modifier A, antioxidant (Irganox 1010 and Irgafos 168 in a weight ratio of 1:1 compounded, Ciba, Switzerland Fine Chemical Company), light stabilizer (Swiss Ciba Fine Chemical Company, brand Tinuvin326) after stirring evenly, use twin-screw to extrude and granulate under the condition of 190-230 ℃, and its specific formula is shown in Table 2.

[0039] The prepared composition is injected into a sample with an injection machine, and the impact resistance, extinction and other performance tests are carried out. Among them, the impact resistance test is tested according to the international standard test method ISO 179. Gloss test using JFL-BZ20 ° 60 ° 85 ° intelligent gloss meter, the test conditions are: (1) stability: 0.4 gloss unit (Gs) / 30 minutes; (2) measurement window size: 16 × 48 (mm ); (3) The surface of the test piece is a mirror finish.

[0040] The test resu...

Embodiment 2

[0042] The matting modifier B was used to replace the matting modifier A, and the remaining components, preparation and testing process were the same as in Example 1, and the specific formula and test results are shown in Table 2.

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Abstract

The present invention relates to a low gloss polypropylene composition and a preparation method thereof. The low gloss polypropylene composition comprises the following blended components, by weight, 100 parts of polypropylene and 1-20 parts of an extinction modifier, wherein the extinction modifier comprises a powder rubber and grafted polypropylene, the powder rubber is a fully vulcanized powder rubber with an average particle size of 20-2000 nm and a cross-linked structure, gel content of the rubber is 60 wt% or higher, the grafted polypropylene is maleic anhydride grafted polypropylene, a maleic anhydride grafting ratio is 1-5%, and a weight ratio of the powder rubber to the grafted polypropylene is 1:(0.2-1). The low gloss polypropylene composition of the present invention has good toughness and low gloss. The preparation method of the present invention has characteristics of simple process, easy condition control, and strong applicability. In addition, the composition of the present invention can be used for automotive interior trims, household appliance shells and the like.

Description

technical field [0001] The present invention relates to a polypropylene composition, more specifically, to a low-gloss polypropylene composition which can be used in the fields of automobiles and home appliances, such as automotive interior parts, home appliance casings, and a preparation method thereof. Background technique [0002] Polypropylene has the advantages of high heat resistance, fatigue resistance, electrical insulation, chemical corrosion resistance, good processability, low price, light weight, and easy recycling, so it is widely used in the fields of electronic appliances, automobile industry, etc. . However, most ordinary modified polypropylene materials have the characteristics of gloss or reflection. This defect not only reduces the overall decoration grade of the car interior, but also makes the car driver easy to fatigue, and even affects the driving safety of the car driver, increasing the risk of traffic accidents. probability. Also can't meet the nee...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L9/02C08L51/06C08K3/34C08K3/36
Inventor 金滟石胜鹏王学峰蔡涛丁树岩刘善元张静
Owner CHINA PETROLEUM & CHEM CORP
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