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High-fluidity polypropylene for production of folding stools and preparation method of high-fluidity polypropylene

A high-fluidity, polypropylene technology, applied in the field of polypropylene modification and preparation, can solve the problems of poor melt fluidity of polypropylene and restrictions on the development of polypropylene industry, so as to improve fluidity, improve cohesiveness, and improve processing efficiency effect

Inactive Publication Date: 2017-11-10
慈溪市赛斯特金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the poor melt fluidity of polypropylene, in order to ensure the quality of processed products, it is necessary to invest a large amount of equipment and energy in the process of processing to make up for the problem of poor fluidity, which will affect the polypropylene industry. Development also poses certain limitations

Method used

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  • High-fluidity polypropylene for production of folding stools and preparation method of high-fluidity polypropylene

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A kind of preparation method that is used to produce the high fluidity polypropylene of folding stool: S1, pass into nitrogen in mixer, mixer is evacuated, and hyperbranched polymer 14Kg, EBS12Kg, shell powder 10Kg and solvent 20Kg are added to Mix in a mixer, the stirring paddle in the mixer stirs the mixture at a speed of 500-800rpm, then add 2Kg of peroxide, and raise the temperature of the mixer to 120-160°C for 0.5-1h;

[0039] S2. Preheating 60Kg of polypropylene, the preheating temperature is 100-120°C, and the pressure is 0.05-0.08 MPa;

[0040] S3, adding the mixture in S1 and the preheated polypropylene in S2 to a screw extruder for extrusion;

[0041] After the extruded materials in S4 and S3 are cooled by cooling water, they are transported to the granulator for granulation.

[0042] Wherein, the hyperbranched polymer is a mixture of hyperbranched polyhydroxypolyurethane amide and hyperbranched polyhydroxypolyurethane with a weight ratio of 1:1.2.

[0043]...

Embodiment 2

[0047] The polypropylene preparation method of embodiment two to embodiment five and comparative example one and comparative example two is identical with the preparation method of embodiment one, and the weight of each component of embodiment two and embodiment five is shown in the table below:

[0048] components

[0049] Wherein, the hyperbranched polymer in Example 2 is a mixture of hyperbranched polycaprolactam and hyperbranched polyenantholactam, and its weight ratio is 1:1.5.

Embodiment 3

[0050] The hyperbranched polymer in embodiment three is hyperbranched polycaprolactam.

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Abstract

High-fluidity polypropylene for production of folding stools is prepared from components in parts by weight as follows: 60-70 parts of polypropylene, 14-18 parts of a superbranched polymer, 12-16 parts of EBS, 2-4 parts of peroxide, 10-20 parts of shell powder and 20-30 parts of a solvent. According to the technical scheme, EBS is a plastic dispersant and used as a carrier, the superbranched polymer can be combined with EBS, the mixture is added to polypropylene, and EBS can be dispersed better. Additionally, with increase of the added superbranched polymer, the viscosity of polypropylene is reduced, and the fluidity of polypropylene can be improved. Besides, when polypropylene is cooled, cured and formed, the superbranched polymer has a three-dimensional branched structure, the clean structure of a polypropylene macromolecular chain can be affected and is more difficult to damage, and accordingly, the mechanical performance of polypropylene is guaranteed.

Description

technical field [0001] The invention relates to the field of modified preparation of polypropylene, in particular to a high-fluidity polypropylene used for producing folding stools and a preparation method thereof. Background technique [0002] Polypropylene plastic has good high temperature resistance, corrosion resistance, electrical insulation, low density, low price of raw materials and abundant sources, so its production capacity and output have been developed rapidly in recent years. Widely used in industries, automobiles, home appliances, fibers and other fields, especially in the field of furniture, it plays an important role. For example, the folding stool produced by it can not only save space and facilitate storage, but also, It can also be carried around, so it has been favored by many people. [0003] However, due to the poor melt fluidity of polypropylene, in order to ensure the quality of processed products, it is necessary to invest a large amount of equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L77/12C08L77/02C08L75/04C08L5/08C08K5/20C08K5/14
CPCC08L23/12C08L2201/06C08L2205/02C08L2205/025C08L2205/03C08L2205/035C08L77/12C08L75/04C08L5/08C08K5/20C08K5/14C08L77/02
Inventor 吴乃君
Owner 慈溪市赛斯特金属制品有限公司
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