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Method for producing high foaming EPE pearl wool by using carbon dioxide foaming agent

A carbon dioxide and blowing agent technology, applied in the field of polymer material processing, can solve the problems of low structural strength, poor flame retardancy, flammability and explosion, etc., and achieve the effect of good flame retardancy, low cost and high bubble density

Inactive Publication Date: 2019-04-09
安徽荣茂塑胶包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of method that adopts carbon dioxide foaming agent to produce high-foaming EPE pearl cotton, to solve the poor flame retardancy of the existing pearl cotton proposed in the above-mentioned background technology, a large amount of static electricity will be generated in the production process, easy Flammable and explosive, low structural strength and poor elasticity

Method used

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  • Method for producing high foaming EPE pearl wool by using carbon dioxide foaming agent

Examples

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Effect test

Embodiment 1

[0018] The method for producing high-foaming EPE pearl cotton by adopting carbon dioxide blowing agent comprises the steps:

[0019] S1: Materials: expandable polyethylene: 70 parts, carbon dioxide foaming agent: 4 parts, anti-shrinkage agent: 3 parts, monoglyceride: 0.8 parts, talcum powder: 1 part, silica airgel: 6 parts Parts, composite blowing agent: 4 parts and filler: 20 parts, composite blowing agent includes azodicarbonamide, zinc oxide and silicon dioxide, the component ratio between azodicarbonamide, zinc oxide and silicon dioxide It is 10:1:2, and the filler includes bentonite, clay, asbestos fiber and light calcium carbonate;

[0020] S2: Mixing of raw materials: Put the expandable polyethylene in a mixer and knead for 5 minutes, then add talcum powder, silica airgel and fillers and continue kneading for 18 minutes to obtain a mixture, and the kneading temperature is 60 degrees Celsius ;

[0021] S3: Heat extrusion: Pour the mixture obtained in step S2 into a hig...

Embodiment 2

[0023] The method for producing high-foaming EPE pearl cotton by adopting carbon dioxide blowing agent comprises the steps:

[0024] S1: Materials: expandable polyethylene: 80 parts, carbon dioxide foaming agent: 2 parts, anti-shrinkage agent: 5 parts, monoglyceride: 0.6 parts, talcum powder: 2 parts, silica airgel: 4 parts Parts, composite blowing agent: 10 parts and filler: 15 parts, composite blowing agent includes azodicarbonamide, zinc oxide and silicon dioxide, the component ratio between azodicarbonamide, zinc oxide and silicon dioxide It is 10:1:2, and the filler includes bentonite, clay, asbestos fiber and light calcium carbonate;

[0025] S2: Mixing of raw materials: put the expandable polyethylene in a mixer and knead for 3 minutes, then add talcum powder, silica airgel and fillers and continue kneading for 16 minutes to obtain a mixture, the kneading temperature is 50 degrees Celsius ;

[0026] S3: Heat extrusion: Pour the mixture obtained in step S2 into a high-...

Embodiment 3

[0028] The method for producing high-foaming EPE pearl cotton by adopting carbon dioxide blowing agent comprises the steps:

[0029] S1: Materials: expandable polyethylene: 75 parts, carbon dioxide foaming agent: 3 parts, anti-shrinkage agent: 4 parts, monoglyceride: 0.7 parts, talcum powder: 2 parts, silica airgel: 5 parts Parts, composite blowing agent: 7 parts and filler: 17 parts, composite blowing agent includes azodicarbonamide, zinc oxide and silicon dioxide, the component ratio between azodicarbonamide, zinc oxide and silicon dioxide It is 10:1:2, and the filler includes bentonite, clay, asbestos fiber and light calcium carbonate;

[0030] S2: Mixing of raw materials: put the expandable polyethylene in the mixer and knead for 4 minutes, then add talcum powder, silica airgel and fillers and continue kneading for 17 minutes to obtain a mixture, the kneading temperature is 55 degrees Celsius ;

[0031] S3: Heat extrusion: Pour the mixture obtained in step S2 into a high...

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Abstract

The invention belongs to the technical field of high molecular material processing, in particular to a method for producing high foaming EPE pearl wool by using a carbon dioxide foaming agent. The method for producing high foaming EPE pearl wool by using the carbon dioxide foaming agent comprises the following steps: S1, taking materials; S2, mixing raw materials: putting expandable polyethylene in a mixer for mixing for 3-5 min and then adding talc powder, a silicon dioxide aerogel and filler and further mixing for 16-18 min to obtain a mixture; and S3, heating and extruding. According to themethod for producing high foaming EPE pearl wool by using the carbon dioxide foaming agent, the pearl wool has good elasticity, heat stability and mechanical properties, and the tensile and tear strength of the pearl wool are improved. By taking carbon dioxide as a foaming agent, the pearl wool is low in cost and good in flame retardance. The method can be used for obtaining a relatively high bubble density. The foamed abscess is more stable. The method is simple in process and convenient for scaled production.

Description

technical field [0001] The invention relates to the technical field of polymer material processing, in particular to a method for producing high-foaming EPE pearl cotton by using a carbon dioxide foaming agent. Background technique [0002] Polyethylene foamed cotton is a non-cross-linked closed-cell structure, also known as EPE pearl cotton, which is a new type of environmentally friendly packaging material. It is composed of low-density polyethylene fat through physical foaming to produce countless independent bubbles. It overcomes the shortcomings of ordinary styrofoam that are fragile, deformed, and poor in recovery. It has many advantages such as water and moisture resistance, shock resistance, sound insulation, heat preservation, good plasticity, strong toughness, recycling, environmental protection, strong impact resistance, etc., and also has good chemical resistance. It is an ideal substitute for traditional packaging materials. The existing pearl cotton has poor...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/04C08K3/34C08K3/36C08K7/12C08K3/26C08K5/103C08J9/12C08J9/10
CPCC08J9/122C08J9/0023C08J9/0066C08J9/0085C08J9/0095C08J9/103C08J2203/04C08J2203/06C08J2203/184C08J2323/06
Inventor 陈传湖
Owner 安徽荣茂塑胶包装材料有限公司
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