A heat-resistant deformation polyethylene foam plastic and its preparation method

一种聚乙烯发泡、耐热变形的技术，应用在聚乙烯发泡塑料领域，能够解决管道分离等问题

Active Publication Date: 2018-10-09
WUHU GECHUAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a heat-resistant deformation polyethylene foamed plastic and its preparation method, so as to solve the phenomenon that the polyethylene foamed plastic in the prior art is separated from the pipe when it is used at high temperature

Method used

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  • A heat-resistant deformation polyethylene foam plastic and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Provide a kind of polyethylene foam plastics, prepare through the following steps:

[0015] (1) Weigh each raw material according to mass percentage: bisphenol A type epoxy resin 4%, polyvinyl butyral 0.8%, diethylene triamine 0.9%, epoxy modified silicone resin 3%, potassium acetate 0.5% , Azodicarbonamide 6%, and the balance is low-density polyethylene;

[0016] (2) Add bisphenol A type epoxy resin, polyvinyl butyral, diethylene triamine, epoxy modified silicone resin, potassium acetate and low density polyethylene into the closed rubber mixing machine, at 140 ~ 150 Mix evenly at ℃, then add azodicarbonamide, mix evenly at 155-160℃, and discharge to obtain the mixed material;

[0017] (3) Put the mixed material into a mould, and then send it into a flat vulcanizer for cross-linking and foaming. The temperature is 160-175° C., the pressure is 10-12 MPa, and the holding time is 15-20 minutes;

[0018] (4) After the pressure holding is completed, the pressure drops sud...

Embodiment 2

[0020] Provide a kind of polyethylene foam plastics, prepare through the following steps:

[0021] (1) Weigh each raw material according to mass percentage: bisphenol A type epoxy resin 4.8%, polyvinyl butyral 0.6%, diethylene triamine 0.7%, epoxy modified silicone resin 3.2%, potassium acetate 0.2% , 7% of azodicarbonamide, and the balance is low-density polyethylene;

[0022] (2) Add bisphenol A type epoxy resin, polyvinyl butyral, diethylene triamine, epoxy modified silicone resin, potassium acetate and low density polyethylene into the closed rubber mixing machine, at 140 ~ 150 Mix evenly at ℃, then add azodicarbonamide, mix evenly at 155-160℃, and discharge to obtain the mixed material;

[0023] (3) Put the mixed material into a mould, and then send it into a flat vulcanizer for cross-linking and foaming. The temperature is 160-175° C., the pressure is 10-12 MPa, and the holding time is 15-20 minutes;

[0024] (4) After the pressure holding is completed, the pressure dr...

Embodiment 3

[0026] Provide a kind of polyethylene foam plastics, prepare through the following steps:

[0027] (1) Weigh each raw material according to mass percentage: bisphenol A type epoxy resin 5%, polyvinyl butyral 1.0%, diethylenetriamine 0.6%, epoxy modified silicone resin 4%, potassium acetate 0.4% , Azodicarbonamide 8%, the balance is low density polyethylene;

[0028] (2) Add bisphenol A type epoxy resin, polyvinyl butyral, diethylene triamine, epoxy modified silicone resin, potassium acetate and low density polyethylene into the closed rubber mixing machine, at 140 ~ 150 Mix evenly at ℃, then add azodicarbonamide, mix evenly at 155-160℃, and discharge to obtain the mixed material;

[0029] (3) Put the mixed material into a mould, and then send it into a flat vulcanizer for cross-linking and foaming. The temperature is 160-175° C., the pressure is 10-12 MPa, and the holding time is 15-20 minutes;

[0030] (4) After the pressure holding is completed, the pressure drops suddenly...

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Abstract

The invention provides a thermal-deformation-resisting polyethylene foam plastic and a preparation method thereof .The polyethylene foam plastic is prepared from bisphenol-A epoxy resin 4, polyvinyl butyral, diethylenetriamine, epoxy-modified organosilicon resin, potassium acetate, azodicarbonamide and low-density polyethylene in a molding foaming mode.

Description

technical field [0001] The invention relates to polyethylene foamed plastics, in particular to a heat-resistant deformation polyethylene foamed plastics and a preparation method thereof. Background technique [0002] As a thermal insulation material, polyethylene foam has many advantages: light weight, low density, and a bulk density of about 20-40kg / m 3 ; The thermal conductivity is small, generally between 0.017 and 0.027 (w / m·k); the water absorption is low, and it has strong water resistance. Because polyethylene foam plastic has the above advantages, it is more suitable for the insulation of air-conditioning systems, especially for air-conditioning systems that require high cleanliness. Moderate polyethylene foam is a good substitute. [0003] However, polyethylene foamed plastics are not suitable for use at high temperatures. When the temperature exceeds 70°C, polyethylene foamed plastic sleeves will melt and shrink, resulting in a phenomenon of being separated from ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L63/00C08L29/14C08L83/04C08K5/098C08J9/10C08G59/50
CPCC08G59/502C08J3/246C08J9/0023C08J9/0061C08J9/103C08J2203/04C08J2323/06C08J2463/00C08L23/06C08L2201/08C08L2203/14C08L2205/035C08L2205/08C08L2207/066C08L63/00C08L29/14C08L83/04C08K5/098
Inventor 魏亮
Owner WUHU GECHUAN NEW MATERIAL TECH CO LTD
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