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Foamed polypropylene plate and preparation method thereof

A technology of foamed polypropylene and polypropylene, which is applied in the field of foamed polypropylene sheet and its preparation, can solve the problems of difficulty in developing polypropylene foam, achieve excellent heat insulation effect, reduce thermal conductivity, and achieve good heat preservation effect

Pending Publication Date: 2021-12-24
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the research and development of polypropylene foam has also become a hot spot in recent years. Although polypropylene foam products have good performance and application prospects, the development of polypropylene foam is very difficult, and there is no relevant and industrialized core in China. technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Put 100 parts of polypropylene, 10 parts of high-density polyethylene, 3 parts of ethylene-acrylate-maleic anhydride, 0.5 parts of heat stabilizer and 1 part of polypropylene wax into a high-mixer and mix them uniformly according to parts by weight; Put the mixture into the feeding port of the extruder, and at the same time, add 20 parts of polyacrylonitrile fibers from the side feeding port, extrude, water-cool, and pelletize to obtain pellets; wherein, the temperature of the first zone of the twin-screw extruder is 160 ℃, the temperature in the second zone is 170 ℃, the temperature in the third zone is 190 ℃, the temperature in the fourth zone is 200 ℃, the temperature in the fifth zone is 210 ℃, and the temperature in the sixth zone is 210 ℃.

[0036] Mix the pellets obtained by the above granulation with 1 part of foaming agent azodicarbonamide, mix evenly, add to an injection molding machine, and perform micro-foaming injection molding to obtain foamed polypropylene...

Embodiment 2

[0038] Put 100 parts of polypropylene, 20 parts of high-density polyethylene, 5 parts of ethylene-acrylate-maleic anhydride, 1 part of heat stabilizer and 2 parts of polypropylene wax into a high-mixer and mix them uniformly according to parts by weight; Add the mixture to the feeding port of the extruder, and at the same time, add 30 parts of polyacrylonitrile fibers from the side feeding port, extrude, water-cool, and pelletize to obtain pellets; wherein, the temperature of the first zone of the twin-screw extruder is 160 ℃, the temperature in the second zone is 170 ℃, the temperature in the third zone is 180 ℃, the temperature in the fourth zone is 190 ℃, the temperature in the fifth zone is 200 ℃, and the temperature in the sixth zone is 210 ℃.

[0039] Mix the granules obtained by the above granulation with 2 parts of foaming agent azodicarbonamide, mix them evenly, add them to an injection molding machine, and perform micro-foaming injection molding to obtain foamed polyp...

Embodiment 3

[0041]Put 100 parts of polypropylene, 15 parts of high-density polyethylene, 4 parts of ethylene-acrylate-maleic anhydride, 1 part of heat stabilizer and 2 parts of polypropylene wax into a high-mixer and mix them uniformly according to parts by weight; Put the mixture into the feeding port of the extruder, add 25 parts of polyacrylonitrile fibers from the side feeding port, extrude, water-cool, and pelletize to obtain pellets; wherein, the temperature of the first zone of the twin-screw extruder is 160°C, The temperature in the second zone is 170°C, the temperature in the third zone is 190°C, the temperature in the fourth zone is 200°C, the temperature in the fifth zone is 210°C, and the temperature in the sixth zone is 215°C.

[0042] Mix the granules obtained by the above granulation with 2 parts of foaming agent azodicarbonamide, mix them evenly, add them to an injection molding machine, and perform micro-foaming injection molding to obtain foamed polypropylene sheets, wher...

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Abstract

The invention discloses a foamed polypropylene plate and a preparation method thereof. The foamed polypropylene plate is prepared from the following components in parts by weight: 100 parts of polypropylene, 20-30 parts of polyacrylonitrile fibers, 10-20 parts of high-density polyethylene, 3-5 parts of ethylene-acrylate-maleic anhydride, 1-2 parts of azodicarbonamide, 0.5-1 part of a heat stabilizer and 1-2 parts of polypropylene wax. The foamed polypropylene plate has excellent thermal insulation performance and can meet the industrial requirements.

Description

technical field [0001] The invention belongs to the field of functional materials, and in particular relates to a foamed polypropylene board and a preparation method thereof. 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, and the main varieties are polyurethane (PU) soft and rigid foams, polystyrene (PS) foams and high-density polyethylene (PE) foams. [0003] There are isocyanate residues that are harmful to the human body during the foaming process of polyurethane foam, and the foamed material cannot be recycled. However, chlorofluorocarbons or butane are usually used in the foaming process of polystyrene (PS), which has adverse effects on the environment. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08L33/20C08L23/08C08K5/134C08K5/372C08J9/10
CPCC08J9/103C08J9/0061C08J9/0085C08J9/0023C08J9/0033C08J2203/04C08J2323/12C08J2423/06C08J2433/20C08J2423/12C08J2423/08
Inventor 杨桂生方永炜姚晨光邹冲朱敏
Owner HEFEI GENIUS NEW MATERIALS