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Environment-friendly degradation modified linear low density polyethylene foam material and preparation method thereof

A linear low-density, polyethylene foaming technology, applied in the field of polymer modification and processing, can solve problems such as poor compatibility, strength and toughness resilience defects, low melting point, etc., to achieve improved impact toughness, light strength, resistance Good flame and fire resistance

Inactive Publication Date: 2013-09-11
滁州格美特科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual low-density polyethylene has low melting point, low yield strength, tear strength, elongation at break and environmental stress cracking resistance, etc., so that the use of polyethylene foam materials is limited.
Chinese patent CN 1370797A discloses a method for preparing low-density polyethylene foam plastics by irradiation cross-linking technology. The resulting foam plastics are soft, heat-insulating, chemical-resistant, and low-temperature resistant. flawed
[0003] Chinese patent CN1931905A discloses a compatible thermoplastic starch / polyethylene blended extrudate and its preparation method and application. It is prepared by extruding and blending starch, polyethylene, plasticizer, additive and initiator. The The material cost is low and the biodegradability is good. However, due to the poor compatibility between polyethylene and native starch, the mechanical properties of the obtained product need to be improved without surface treatment of the starch and only rely on the initiator for chemical crosslinking.
Plastics are completely assimilated by microorganisms in soil and degraded into CO 2 It takes a long time to achieve inorganic mineralization with water, resulting in accumulation in the environment

Method used

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  • Environment-friendly degradation modified linear low density polyethylene foam material and preparation method thereof
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  • Environment-friendly degradation modified linear low density polyethylene foam material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Preparation of modified starch: Add 65 parts of 220-mesh tapioca starch into a high-speed mixer, add 2.5 parts of isopropyl triisostearyl titanate, and couple at a low speed. When the temperature of the material rises to 30°C Stop the coupling, add 14 parts of glycerin, continue mixing at low speed until the material temperature rises to 80°C, add 7.5 parts of carboxamide and 2.4 parts of polyethylene wax, mix at low speed until the material temperature is 90°C, then change to high speed mixing , when the material temperature reaches 100°C, stop mixing, and let it stand at room temperature of 20°C for 24 hours to obtain modified starch;

[0032] (2) 85 parts of linear low-density polyethylene, 20 parts of ethylene / vinyl acetate copolymer, 3.6 parts of dioctyl phthalate, 115 parts of talcum powder, 4.5 parts of azodicarbonamide, and 82 parts of modified starch , 3.2 parts of processing aids (a mixture of polyethylene wax and white oil in a weight ratio of 1:1), 1.2 p...

Embodiment 2

[0036] (1) Preparation of modified starch: Add 70 parts of 200-mesh cornstarch into a high-speed mixer, add 4 parts of tris(dioctyl pyrophosphate oxy) titanate, couple at a low speed, and when the temperature of the material rises to Stop coupling at 30°C, add 15 parts of glycerol, continue mixing at a low speed until the temperature of the material rises to 80°C, add 10 parts of carbonamide and 2 parts of polyethylene wax, mix at a low speed until the temperature of the material is 90°C, change to Mix at high speed, stop mixing when the material temperature reaches 100°C, and let stand at room temperature of 20°C for 24 hours to obtain modified starch;

[0037] (2) 80 parts of linear low density polyethylene, 25 parts of ethylene / ethyl acrylate copolymer, 3.8 parts of dinonyl phthalate, 100 parts of talcum powder, 3.6 parts of azobisisobutyronitrile, modified starch 76 parts, 2.5 parts of processing aids (a mixture of polyethylene wax and white oil in a weight ratio of 1:1), ...

Embodiment 3

[0041] (1) Preparation of modified starch: Add 60 parts of 250-mesh potato starch into a high-speed mixer, add 2 parts of isopropyl triisostearyl titanate, and couple at a low speed. When the temperature of the material rises to 30°C Stop the coupling, add 12 parts of glycerol, continue mixing at low speed until the material temperature rises to 80°C, add 7 parts of carbonamide and 3 parts of polyethylene wax, mix at low speed until the material temperature is 90°C, change to high speed mixing , when the material temperature reaches 100°C, stop mixing, and let it stand at room temperature of 20°C for 24 hours to obtain modified starch;

[0042] (2) 95 parts of linear low-density polyethylene, 10 parts of ethylene / vinyl acetate copolymer, 3.5 parts of dibutyl phthalate, 150 parts of calcium carbonate, 2 parts of azodicarbonamide, and 60 parts of modified starch , 3.8 parts of processing aids (a mixture of polyethylene wax and white oil in a weight ratio of 1:1), 1.5 parts of di...

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Abstract

The invention belongs to the technical field of polymer modification and processing and relates to a modified linear low density poly vinyl foam material and a preparation method thereof. The modified linear low density poly vinyl foam material is prepared from the following components in parts by weight: 80-100 parts of linear low density poly vinyl, 10-35 parts of elastic toughening material, 3.5-4.5 parts of a plasticizer, 100-150 parts of filling agent, 2-6 parts of foaming agent, 60-105 parts of modified starch, 2.5-4.5 parts of processing auxiliary, 1.0-1.5 parts of crosslinking agent, 10-18 parts of fire retardant and 2.5-4 parts of flame retardant synergist. The modified linear low density poly vinyl foam material has good impact toughness and environmental stress; and the modified linear low density poly vinyl foam material is easy to degrade, pollution-free and environment-friendly and has good flame retardancy.

Description

technical field [0001] The invention belongs to the technical field of polymer modification and processing, and relates to a modified linear low-density polyethylene foam material and a preparation method thereof. Background technique [0002] Polyethylene foam plastic is soft, tough, abrasion-resistant, heat-insulating, chemical-resistant, and especially low-temperature resistant. It is suitable for structural materials such as floating materials, thermal insulation materials, vehicles and building boards. Due to the low melting point and low yield strength, tear strength, elongation at break and environmental stress cracking resistance of ordinary low-density polyethylene, the use of polyethylene foam materials is limited. Chinese patent CN 1370797A discloses a method for preparing low-density polyethylene foam plastics by irradiation cross-linking technology. The resulting foam plastics are soft, heat-insulating, chemical-resistant, and low-temperature resistant. There ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/16C08L9/02C08L3/04C08K13/02C08J9/10C08J9/14C08B31/00
Inventor 郭学林
Owner 滁州格美特科技有限公司
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