Foamed polypropylene and foaming process thereof

A technology of foamed polypropylene and polypropylene, which is applied in the field of polypropylene formula and its foaming process, can solve problems such as water leakage, high specific gravity of finished products, and uneven foaming, and achieve liquid level control, long-term work, and foaming even bubble effect

Inactive Publication Date: 2016-05-25
DONGGUAN YOUSHENG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, foamed plastics have a series of characteristics such as low density, high specific strength, strong energy absorption capacity, and good sound and heat insulation performance, while the current polypropylene has a high proportion of finished products due to defects in the foaming process and uneven foaming. risk of water leakage

Method used

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Experimental program
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Embodiment Construction

[0014] A foaming process for expanded polypropylene, comprising the following steps:

[0015] Step (1): according to the mass ratio of claim 1, polypropylene polymer raw material, yellow foaming powder and white foaming powder are stirred and mixed;

[0016] Step (2), after mixing evenly, add white mineral oil according to the mass ratio of claim 1 and add and carry out secondary stirring and mixing to obtain a mixed material;

[0017] In step (3), the mixed material is put into an injection molding machine for molding processing, the molding temperature is controlled at 210° C., and the cooling time is 15-20 seconds;

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PUM

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Abstract

The invention discloses foamed polypropylene and a foaming process thereof. The foamed polypropylene is uniform in foaming and better in sealing performance, no water leakage risk exists, and particularly, when the foamed polypropylene is applied to a foaming floating ball, the specific gravity can reach 0.5-0.7 g / cm<3>, while the specific gravity of a foaming floating ball made through a traditional process is 0.7 g / cm<3> and above. By means of the foamed polypropylene and the foaming process thereof, it is more helpful to achieve control over the liquid level, the foamed polypropylene has better high-temperature resistance, the highest operating temperature can reach 110 DEG C, the foamed polypropylene can work stably for a long time and can be directly applied to water drinking equipment, and safety and reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of central air-conditioning, and more specifically relates to a polypropylene formula and its foaming process. Background technique [0002] Foam plastic has the advantages of light weight, heat insulation, cushioning, insulation, anti-corrosion, and low price, so it is widely used in daily necessities, packaging, industry, agriculture, transportation, military industry, and aerospace industry. Since the 1990s in my country, foam The development of plastics is very rapid. At present, foamed plastics have a series of characteristics such as low density, high specific strength, strong energy absorption capacity, and good sound and heat insulation performance, while the current polypropylene has a high proportion of finished products due to defects in the foaming process and uneven foaming. There is a risk of water leakage. Contents of the invention [0003] The object of the present invention is to provide ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L91/06C08J9/04B29C45/76B29C45/78
CPCC08L23/12B29C45/76B29C45/78C08J9/04C08J2203/18C08J2323/12C08L2201/08C08L2203/14C08L91/06
Inventor 李燕峰李岩斌官贵峰禤杰雄张云辉
Owner DONGGUAN YOUSHENG ELECTRONICS
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