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Modified polypropylene composition and preparation method thereof

A polypropylene composition and polypropylene technology, applied in the field of modified polypropylene composition, can solve the problems of limiting the application effect of polypropylene materials, poor weather resistance of polypropylene, embrittlement of flame-retardant polypropylene, etc., and achieve good processing fluidity , small creep, stable size

Inactive Publication Date: 2014-01-22
昆山市周市溴化锂溶液厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polypropylene oxygen index is low, only 17.4, and it is easy to burn, and the traditional flame-retardant polypropylene is brittle after adding a large amount of flame retardants, and cannot have high flame-retardant properties and better performance at the same time. Mechanical properties, and the weather resistance of polypropylene is poor, which limits the application effect of polypropylene materials

Method used

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  • Modified polypropylene composition and preparation method thereof
  • Modified polypropylene composition and preparation method thereof
  • Modified polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The parts by weight of each component are as follows:

[0013]

[0014] The average particle size of the calcium carbonate is 2 microns.

[0015] Polypropylene, maleic anhydride grafted polypropylene, styrene butadiene copolymer, decabromodiphenyl ether, stearic acid, 2-hydroxy-4 n-octyloxy-benzophenone, calcium carbonate in the above ratio Add it into a high-speed mixer, and the stirring speed is 1500 rpm, so that all components are fully mixed and evenly formed into a mixture;

[0016] Send the mixture into a twin-screw extruder for extrusion and granulation. The rotating speed is 350r / min. The temperature in the zone is 190°C, the temperature in the fifth zone is 195°C, and the modified polypropylene composition is obtained after extrusion.

Embodiment 2

[0018] The parts by weight of each component are as follows:

[0019]

[0020] The calcium carbonate preferably has an average particle diameter of 5 microns.

[0021] Add polypropylene, maleic anhydride grafted polypropylene, styrene butadiene copolymer, decabromodiphenyl ether, stearic acid, 2-hydroxy-4 n-octyloxy-benzophenone, and calcium carbonate in proportion In the high-speed mixer, the stirring speed is 1500-2000 rpm, so that the components are fully mixed and evenly formed into a mixture;

[0022] Send the mixture into a twin-screw extruder for extrusion and granulation. The rotating speed is 420r / min. The temperature in the zone is 190°C, the temperature in the fifth zone is 195°C, and the modified polypropylene composition is obtained after extrusion.

[0023] The modified polyacrylic acid composition of the present invention has good flame retardancy, good processing fluidity, good molding performance, low creep and stable size; at the same time, it has better...

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Abstract

The invention discloses a modified polypropylene composition which comprises the components in parts by weight as follows: 100 parts of polypropylene, 10-18 parts of maleic anhydride grafted polypropylene, 2-8 parts of a styrene-butadiene copolymer, 5-10 parts of decabromodiphenyl ether, 3-15 parts of stearic acid, 0.002-0.005 part of 2-hydroxy-4-n-octoxy-benzophenone and 1-10 parts of calcium carbonate. The invention further discloses a preparation method of the modified polypropylene composition. The method comprises the steps as follows: all components are added into a high-speed mixer, and the components are stirred and mixed uniformly, so that a mixture is formed; and the mixture is fed into a twin-screw extruder for extrusion and pelleting. The modified polypropylene composition has excellent flame retardant property, processing fluidity and formability, the creep property is small, and the size is stable; and at the same time, the composition has better size stability and stable mechanical property, electrical property and heat resistance in a wider temperature range.

Description

technical field [0001] The invention relates to a modified polypropylene composition and a preparation method of the polypropylene composition. Background technique [0002] Polypropylene has the advantages of low density, high hardness, and easy processing, so it is widely used in various fields. However, the polypropylene oxygen index is low, only 17.4, and it is easy to burn, and the traditional flame-retardant polypropylene is brittle after adding a large amount of flame retardants, and cannot have high flame-retardant properties and better performance at the same time. Mechanical properties, and the weather resistance of polypropylene is poor, which limits the application effect of polypropylene materials. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a modified polypropylene composition and a preparation method thereof, so as to overcome the above-mentioned defects in the prior art. [0004] In order to...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08K13/02C08K5/06C08K5/09C08K3/26C08K5/132B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/9258B29C2948/92704C08K2201/003C08L23/12C08L2201/02C08L2205/03C08L51/06C08L25/10C08K13/02C08K5/06C08K5/09C08K2003/265C08K5/132B29C48/04B29C48/40B29C48/875B29C2948/9259B29C2948/92885B29C2948/92895
Inventor 吴冬琪
Owner 昆山市周市溴化锂溶液厂
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