Starch-based composite blown film and preparation process of same

A blown film, starch-based technology, applied in the field of starch-based composite blown film and its preparation

Inactive Publication Date: 2013-05-29
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of low starch addition, poor mechanical properties and poor processability in existing starch-plastic composite film materials, and provide a cost-effective Inexpensive starch-based composite blown film material with excellent mechanical properties and transparency and simple processing and preparation method thereof

Method used

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  • Starch-based composite blown film and preparation process of same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The starch-based composite blown film material of this embodiment consists of base material tapioca starch, bamboo fiber, acetate-esterified tapioca starch, cellulose acetate, low-density polyethylene, linear low-density polyethylene and auxiliary plasticizer glycerin, reinforcing agent agar , nano-SiO 2 , coupling agent DL-171, stearic acid, antioxidant 1076, light stabilizer o-hydroxybenzophenone, processing lubricant liquid paraffin compounded; the content of tapioca starch in the base material is 40wt%, and acetate The content of starch is 15wt%, the content of bamboo fiber is 15wt%, the content of cellulose acetate is 10wt%, the content of low-density polyethylene is 12wt%, and the content of low-density linear polyethylene in the base material is 8wt%. The dosage of the softening agent glycerin is 30wt% of the starch, the dosage of the reinforcing agent agar is 5wt% of the starch, and the nano-SiO 2 The dosage is 2.5wt% of the starch, the dosage of auxiliary...

Embodiment 2

[0047] In this embodiment, the starch-based composite blown film material is made of base material cornstarch, acetate-esterified cornstarch, cotton fiber, cellulose acetate butyrate, low-density polyethylene, linear low-density polyethylene and auxiliary plasticizer glycerin. Reagent agar, nano-SiO 2 , coupling agent DL-171, stearic acid, antioxidant 1076, light stabilizer o-hydroxybenzophenone, and processing lubricant liquid paraffin; the content of corn starch in the base material is 55wt%, and the acetate The content of starch is 10wt%, the content of cotton fiber is 10wt%, the content of cellulose acetate butyrate is 5wt%, the content of low-density polyethylene is 10wt%, and the content of low-density linear polyethylene in the base material is 10wt%. The dosage of agent plasticizer glycerin is 30wt% of starch, the consumption of reinforcing agent agar is 8wt% of starch, nano-SiO 2 The dosage is 2.5wt% of starch, the dosage of auxiliary coupling agent DL-171 is 3wt% of...

Embodiment 3

[0057] The starch-based composite blown film material of this embodiment consists of base material tapioca starch, acetate-esterified tapioca starch, cotton fiber, cellulose acetate, low-density polyethylene, linear low-density polyethylene and auxiliary plasticizer glycerin, reinforcing agent agar , nano-SiO 2 , coupling agent DL-171, stearic acid, antioxidant 1076, light stabilizer o-hydroxybenzophenone, and processing lubricant liquid paraffin; the content of tapioca starch in the base material is 60wt%, and acetate The content of starch is 10wt%, the content of cotton fiber is 10wt%, the content of cellulose acetate butyrate is 5wt%, the content of low-density polyethylene is 10wt%, and the content of low-density linear polyethylene in the base material is 5wt%, Auxiliary plasticizer glycerin dosage is 30wt% of starch, the dosage of strengthening agent agar is 8wt% of starch, nano-SiO 2 The dosage is 2.5wt% of the starch, the dosage of auxiliary coupling agent DL-171 is 3...

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Abstract

The invention relates to a starch-based composite blown film material with a high starch content and a preparation process of the same. The starch-based composite blown film material is prepared from base materials comprising natural starch, acetylated starch, plant fibres, esterified cellulose and polyethylene resin, and appropriate auxiliaries comprising starch plasticizer glycerol, enhancer agar, nano-SiO2, coupling agent DL-171, stearic acid, antioxidant 1076, light stabilizer o-hydroxyl benzophenone, and processing lubricant liquid paraffin, and is prepared by adopting a melting-blowing process. The environment-friendly type starch-based composite blown film material disclosed by the invention has the following characteristics that the added amount of starch is high; the ratio of degradation constituents can achieve 80% of the weight of the film; the film is good in surface smoothness and transparency, and high in physical and mechanical properties; the processing equipment is low in requirements; the processing technique is simple; and the material is low in cost and easy to degrade, and is a green and environment-friendly type film material which can be widely applied.

Description

Technical field [0001] The present invention involves a starch -based composite plastic film and its preparation process, especially involving a kind of high starch content with natural starch, acetate starch, natural plant fiber, ester -based cellulose, polyethylene resin, and polyethylene resin.Method of high -intensity composite plastic film material. Background technique [0002] The performance of starch plastic composite membrane materials has excellent performance, which not only retains the characteristics of plastic membrane in mechanical performance, but also partially overcomes the defects of non -degradable plastic.Packaged film, shopping bags, etc. [0003] Due to severe environmental pollution caused by plastic products, the world attaches great importance to the development of degradable materials.As a low price and rich source of agricultural products, starch has become the main raw material for the development of degradable materials.The starch -based membrane m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L3/06C08L97/02C08L1/12C08L1/14C08L23/06C08L23/08C08K13/02C08K5/053C08K3/36C08K5/09C08K5/132B29C49/04B29C49/78B29B9/06
Inventor 陈一刘文勇李祥刚曾广胜
Owner HUNAN UNIV OF TECH
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