Degradable resin-starch-kenaf extruded plastic master batch

A technology of plastic masterbatch and kenaf, which is applied in the field of polymer materials, can solve the problems of unsatisfactory material properties, poor compatibility between polyethylene and kenaf, etc., and achieve the effect of good processing performance and high tensile strength

Inactive Publication Date: 2013-09-11
赵振峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, polyethylene is a non-polar substance, while kenaf fiber is a polar material, resulting in poor compatibility between polyethylene and kenaf, direct mixing, and material properties are not ideal

Method used

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  • Degradable resin-starch-kenaf extruded plastic master batch
  • Degradable resin-starch-kenaf extruded plastic master batch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of degradable resin-starch-kenaf extruded plastic masterbatch, its components are low-density polyethylene 15%, maleic anhydride graft modified low-density polyethylene 15%, starch 45% and kenaf 25%, the kenaf is soaked in hydrochloric acid with a mass fraction of 1% for 10 hours, the tensile strength of the blended material is 20.7MPa, the water absorption is 0.27%, and the biodegradation rate reaches 70% in the presence of aerobic organisms. %.

Embodiment 2

[0022] A kind of degradable resin-starch-kenaf extruded plastic masterbatch, its components are low-density polyethylene 8%, maleic anhydride graft modified low-density polyethylene 40%, starch 20% and kenaf 32%, the kenaf is soaked in acetic acid with a mass fraction of 10% for 5 hours, the tensile strength of the material after blending is 22.2MPa, the water absorption rate is 0.10%, and the biodegradation rate reaches 50% under the condition that aerobic organisms exist. %.

Embodiment 3

[0024] A kind of degradable resin-starch-kenaf extruded plastic masterbatch, its components are low-density polyethylene 20%, maleic anhydride graft modified low-density polyethylene 20%, starch 50% and kenaf 10%, the kenaf is soaked in caustic soda with a mass fraction of 15% for 3 hours, the tensile strength of the material after blending is 18.9MPa, the water absorption rate is 0.19%, and the biodegradation rate reaches 60% under the condition that aerobic organisms exist. %.

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Abstract

The invention belongs to the field of high polymer materials and in particular relates to a degradable resin-starch-kenaf extruded plastic master batch. The degradable resin-starch-kenaf extruded plastic master batch comprises the following components by volume percent: 30%-60% of polyethylene, 0-50% of starch and 5-40% of kenaf, wherein the polyethylene is composed of low-density polyethylene and maleic anhydride modified polyethylene in the volume ratio of (0.2-5):1. The extruded composite resin (master batch) material with higher tensile strength and good processing performance is prepared by virtue of a molecular design method; the biodegradation rate is 40%-70% in the presence of aerobiont; the using performance and the processing performance of the composite material are similar to those of the polyethylene, so that the material is green and environment-friendly, and therefore, the purposes of protecting the environment, efficiently utilizing the resources and lowering the cost are achieved.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a degradable resin-starch-kenaf extruded plastic masterbatch. Background technique [0002] Polyethylene (PE) is a general-purpose resin with low price and large output. It has excellent electrical insulation, chemical resistance, low temperature resistance and processing fluidity, but has disadvantages such as poor atmospheric aging resistance and easy stress cracking. It is also quite prominent and at the same time difficult to biodegrade. [0003] Starch is a polysaccharide with the molecular formula (C 6 h 10 o 5 ) n . Starch can be divided into amylose (sugar starch) and amylopectin (glutinous starch). Starch can be regarded as a high polymer of glucose, the molecular weight of amylose is about 50,000, and the molecular weight of amylopectin is about 60,000. Starch is a natural degradable polymer. Under the action of microorganisms, starch macromolecules can be decomp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L3/02C08L51/06C08L1/02
Inventor 赵振峰曲红旗陶放
Owner 赵振峰
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