Polypropylene foaming material and preparation method thereof

A foamed material, polypropylene technology, applied in the field of polypropylene foamed material and its preparation, can solve the problems affecting product quality, the strength and oxidation resistance of finished products are not very good, and the plunger type mold cannot realize exhaust, etc. To achieve good foaming effect

Pending Publication Date: 2021-03-05
苏州勤联塑胶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, due to the different raw materials used for polypropylene copolymer foaming materials, the product performance is also different, but most of the products have less additives, resulting in poor strength and oxidation resistance of the finis

Method used

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  • Polypropylene foaming material and preparation method thereof
  • Polypropylene foaming material and preparation method thereof
  • Polypropylene foaming material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] see Figure 1-7 , a kind of polypropylene foam material and preparation method thereof, please refer to figure 1 , made of the following components by weight: 60-80 parts of polypropylene PP resin, 5-10 parts of foaming agent, 3-5 parts of anti-aging agent, 1-3 parts of diluent, and 1-5 parts of nucleating agent part, 2-4 parts of antioxidant;

[0049] Include the following steps:

[0050] S1, mix polypropylene PP resin, foaming agent, anti-aging agent, nucleating agent, antioxidant and diluent, and stir the mixture until it becomes a slurry, and obtain a uniform dispersion after drying. The foaming agent adopts chemical Foaming agent, the foaming effect of chemical foaming agent is better;

[0051] S2, putting the dispersion into a two-roller masticator to mix it with the elastomer;

[0052] S3, making the mixture in S2 into a sheet, then putting the sheet into the mold frame of the press, preheating for 3-5 minutes and then heating and pressing to preform the shee...

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PUM

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Abstract

The invention discloses a polypropylene foaming material and a preparation method thereof, and belongs to the field of foaming materials. The polypropylene foaming material is prepared from the following components including, by weight, 60-80 parts of polypropylene PP resin, 5-10 parts of a foaming agent, 3-5 parts of an anti-aging agent, 1-3 parts of a diluent, 1-5 parts of a nucleating agent and2-4 parts of an antioxidant. The performance of the product is improved by adding the anti-aging agent and the antioxidant, and the exhaust rate can be automatically adjusted according to the foamingspeed in the preparation process so as to obtain the product with uniform and fine foam holes; an auxiliary plunger moves in a main plunger in the foaming process to enable a roller to rotate, then avertical rod does reciprocating motion up and down, a magnetic air blocking film is intermittently opened according to the principle that magnets with the same polarity repel each other, air is prevented from flowing back into a mold, meanwhile, an air blowing piece rotates under the action of repulsive force, the exhaust effect is further improved, and meanwhile gas backflow is prevented, so that gas generated by foaming is smoothly exhausted.

Description

technical field [0001] The invention relates to the field of foamed materials, more specifically, to a polypropylene foamed material and a preparation method thereof. Background technique [0002] With the development and progress of society, all walks of life have higher and higher requirements for plastic performance, and people are increasingly favoring materials that are environmentally friendly, safe, light in weight, and cost-effective. Polymer foam material is a resin-based material with a large number of bubbles inside the material, which can be regarded as a solid / gas composite material filled with gas. Foam materials are light in weight, high in specific strength, and have functions such as cushioning, sound absorption, and heat preservation. They are widely used in fields such as construction, automobiles, packaging, aerospace, and home appliances. [0003] Polypropylene resin has the characteristics of light weight, rich sources of raw materials, superior perfor...

Claims

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Application Information

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IPC IPC(8): B29C44/02B29C44/58B29C33/10C08L23/12C08J9/04
CPCB29C44/02B29C44/586B29C44/588C08J9/04C08J2323/12
Inventor 董玺沈学明
Owner 苏州勤联塑胶制品有限公司
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