Radiation crosslinked polyolefin high-elasticity foam and preparation method thereof

A technology of radiation cross-linking and polyolefin, applied in the field of radiation cross-linking polyolefin high-elastic foam and its preparation, which can solve the problems of high hardness, long foaming time, and environmental pollution, and achieve low hardness and good anti-slip effect , good softness

Active Publication Date: 2012-04-18
湖州长园特发科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the general foam

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Weigh 64 parts of ethylene-octene copolymer, 28 parts of ethylene-vinyl acetate copolymer, and 5 parts of azodicarbonamide as the main ingredients, and banbury in an internal mixer at 100 ° C. After the main ingredients are fused, Add: 1 part of zinc stearate, 0.5 part of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 1 part of distearyl thiodipropionate, 0.5 parts of polyethylene wax, the temperature is constant, after being fused, make particles in the granulator for use; at 110°C, extrude the masterbatch prepared in the granulation step into a sheet; the energy used is 2.5eV The sheet is irradiated by an electron accelerator; the irradiated sheet is continuously foamed in a horizontal furnace at a temperature of 210°C to obtain the required radiation crosslinked polyolefin high elastic foam cotton.

Embodiment 2

[0028] Example 2: Weigh 63 parts of ethylene-octene copolymer, 27 parts of ethylene-vinyl acetate copolymer, and 5 parts of azodicarbonamide as the main ingredients, and banbury in an internal mixer at 100 ° C. After the main ingredients are fused, Add: 1 part of zinc stearate, 1 part of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 2 parts of distearyl thiodipropionate, 1 part of polyethylene wax, the temperature is constant, after being fused, make particles in the granulator for use; at 110°C, extrude the masterbatch prepared in the granulation step into a sheet; the energy used is 2.5eV The sheet is irradiated by an electron accelerator; the irradiated sheet is continuously foamed in a horizontal furnace at a temperature of 210°C to obtain the required radiation crosslinked polyolefin high elastic foam cotton.

Embodiment 3

[0029] Example 3: Weigh 60 parts of main ingredients ethylene-octene copolymer, 30 parts of ethylene-vinyl acetate copolymer, and 7 parts of azodicarbonamide, and banbury in an internal mixer at 100 ° C. After the main ingredients are fused Add: 1 part of zinc stearate, 0.5 part of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 1 part of distearyl thiodipropionate, 0.5 parts of polyethylene wax, the temperature is constant, after being fused, make particles in the granulator for use; at 110°C, extrude the masterbatch prepared in the granulation step into a sheet; the energy used is 2.5eV The sheet is irradiated by an electron accelerator; the irradiated sheet is continuously foamed in a horizontal furnace at a temperature of 210°C to obtain the required radiation crosslinked polyolefin high elastic foam cotton.

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PUM

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Abstract

The invention provides radiation crosslinked polyolefin high-elasticity foam and a preparation method thereof. The radiation crosslinked polyolefin high-elasticity foam comprises a main material and an auxiliary material, wherein the main material comprises the following components in percentage by weight: 60-65 percent of ethylene-octene copolymer, 25-30 percent of ethylene-vinyl acetate copolymer and 5.0-10.0 percent of foaming agent; the auxiliary material comprises the following components in percentage by weight: 1-2 percent of sensitizing agent, 1-2 percent of antioxidant and 0.5-1.0 percent of lubricating agent; the foaming agent is selected from azodicarbonamide; the sensitizing agent is selected from zinc stearate; the antioxidant is selected from a mixture of tetra-[beta-(3,5-di-tert-butyl-4-hydroxy phenyl)metacetonic acid] pentaerythritol ester and distearyl thiodipropioante; the lubricating agent is selected from polyethylene wax; and the mass ratio of the tetra-[beta-(3,5-di-tert-butyl-4-hydroxy phenyl)metacetonic acid] pentaerythritol ester to the distearyl thiodipropioante is 1:2. The radiation crosslinked polyolefin high-elasticity foam has the beneficial effects of lower foaming energy consumption in comparison to the conventional polyolefin foam, smooth surface, fine foam holes, higher flexibility, smaller hardness, greatly-improved mechanical property and particular increase in the elongation percentage by 2-3 times.

Description

technical field [0001] The invention relates to a radiation-crosslinked polyolefin high-elastic foam and a preparation method thereof, in particular to a radiation-crosslinked polyolefin high-elastic foam with low hardness, good flexibility and low energy consumption and a preparation method thereof. Background technique [0002] Radiation cross-linked polyolefin high-elastic foam is a new type of foam material that is more advanced than radiation cross-linked polyethylene (IXPE) foam, because of its smooth surface, fine cells, high elasticity, high toughness, and low thermal conductivity. , low water absorption, non-toxic and tasteless, aging resistance, chemical corrosion resistance, easy secondary processing and other characteristics, as a new generation of high-efficiency, energy-saving, environmentally friendly materials can be widely used in special packaging, sporting goods, automobile industry, building waterproofing, bags Shoe materials, vehicle and ship manufacturi...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L31/04C08J3/28C08J3/24C08J9/04C08K5/098C08K5/134C08K5/372
Inventor 杨鸿昌陈兴茂石洪军尹晓军李志刚
Owner 湖州长园特发科技有限公司
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