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Polypropylene resin with high flux intensity

A technology of polypropylene resin and high melt strength, applied in the field of polymer materials, can solve the problems of polluting the processing environment and increasing product costs, and achieve excellent performance

Inactive Publication Date: 2008-08-27
CGN JUNER NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that a large amount of auxiliary agent acetone is used, which leads to an increase in product cost and pollutes the processing environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Raw material parts by weight are composed as follows:

[0032] Homopolypropylene resin (Qilu Petrochemical) T30S: 100 parts

[0033] Benzoyl peroxide (commercially available): 0.03 parts

[0034] Tetraethylene glycol dimethacrylate (commercially available): 1.8 parts

[0035] Tetramethylthiuram disulfide (commercially available): 0.04 parts

[0036] Calcium carbonate (commercially available): 1 part

[0037] According to the above ratio, the polypropylene resin, organic peroxide, and cross-linking agent are pre-mixed in a high-speed mixer, and then the branching accelerator and nucleating agent are mixed evenly, and then added to the twin-screw extruder , under the conditions of controlled temperature, screw speed and feeding speed, kneading, reactive extrusion and granulation are carried out, and finally high melt strength polypropylene is obtained. Control the feeding speed of the twin-screw extruder to 20 rpm, the screw speed to 150 rpm, and set the temperature o...

Embodiment 2

[0039] Raw material parts by weight are composed as follows:

[0040] Homopolypropylene resin (Qilu Petrochemical) T30S: 100 parts

[0041] Benzoyl peroxide: 0.03 parts

[0042] Tetraethylene glycol dimethacrylate: 0.9 parts

[0043] Tetramethylthiuram disulfide: 0.04 parts

[0044] Calcium carbonate: 1 part

[0045] According to the preparation method of Example 1, high melt strength polypropylene was prepared.

Embodiment 3

[0047] Raw material parts by weight are composed as follows:

[0048] Homopolypropylene resin (Qilu Petrochemical) T30S: 100 parts

[0049] Benzoyl peroxide: 0.03 parts

[0050] Tetraethylene glycol dimethacrylate: 2.7 parts

[0051] Tetramethylthiuram disulfide: 0.04 parts

[0052] Calcium carbonate: 1 part

[0053] According to the preparation method of Example 1, high melt strength polypropylene was prepared.

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PUM

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Abstract

The invention provides a high melt strength polypropylene resin which contains 100 portions of polypropylene resin, 0.01-10 portions of organic peroxide, 1-10 portions of multifunctional monomer, 0.01-8 portions of branching accelerator and 0.1-2 portions of nucleating agent. The inventive high melt strength polypropylene resin has better performance, environment protection, non toxicity and the application in bubble, hot shaping and blow molding fields.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a high-melt strength polypropylene resin and a preparation method thereof. Background technique [0002] As a general-purpose plastic, polypropylene (PP) is widely used in various fields of industrial production, and its output is second only to PE and PVC. As a crystalline high polymer, PP has a smaller specific gravity than other general-purpose thermoplastics, better mechanical properties such as yield strength and surface strength, and has outstanding stress crack resistance, wear resistance and chemical stability. As well as the characteristics of wide source of raw materials and low price, it has been widely used. However, PP is a partially crystalline polymer. Since PP is a partially crystalline polymer, the softening point is very close to the melting point. After the melting point is exceeded, the melt strength decreases rapidly, resulting in the disadvantages of low me...

Claims

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Application Information

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IPC IPC(8): C08F255/02C08F2/44C08K5/40C08K3/26C08K5/39C08L51/06
Inventor 刁雪峰方万漂宋玉兴卢军杨丰富
Owner CGN JUNER NEW MATERIALS
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