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High-water-resistance full-degradable plastic film and preparation method thereof

A plastic film, fully degradable technology, applied in the field of packaging materials, can solve the problems of difficult processing of PVA plastics, poor mechanical properties of products, serious phase separation, etc., and achieve high tensile properties, strong water resistance, and good uniformity.

Inactive Publication Date: 2015-09-09
TONGLING FOUNDER PLASTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PVA material has poor compatibility with the base material, and the phase separation is serious. This characteristic makes PVA plastic difficult to process, and the mechanical properties of the product are relatively poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Non-limiting examples of the present invention are as follows:

[0017] A fully degradable plastic film with high water resistance, prepared from the following component raw materials in weight (kg):

[0018] Tapioca starch 55, buckwheat husk powder 8, wollastonite powder 8, polylactic acid 4, polyvinyl alcohol 15, glycerin 20, silane coupling agent KH-550 1.5, silicon acrylic emulsion 4, epoxy soybean oil 4, polyglycerol castor Alcohol ester 1.5, maleic anhydride 8, erucamide 1.5.

[0019] The preparation method of highly water-resistant fully degradable plastic film comprises the following steps:

[0020] (1) After mixing cassava starch, buckwheat husk powder and wollastonite powder, add 8% acetic acid solution at a solid-to-liquid weight ratio of 1:1, and stir at 80°C for 0.5h to obtain a mixed slurry;

[0021] (2) Put the mixed slurry in (1) into the reaction kettle and stir at 80°C for 1h, adjust the pH to 8.5-9.0 with 5% NaOH solution, then add maleic anhydride ...

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Abstract

The invention discloses a high-water-resistance full-degradable plastic film which is characterized by being prepared from the following raw materials in parts by weight: 50-60 parts of cassava starch, 5-10 parts of buckwheat shell powder, 5-10 parts of wollastonite powder, 3-5 parts of polylactic acid, 10-20 parts of polyvinyl alcohol, 15-25 parts of glycerol, 1-2 parts of a silane coupling agent KH-550, 3-5 parts of silicone acrylic emulsion, 3-5 parts of epoxidized soybean oil, 1-2 parts of polyglycerol polyricinoleate, 5-10 parts of maleic anhydride and 1-2 parts of erucyl amide. The full-degradable plastic film disclosed by the invention is good in homogeneity, high in tensile property and high in strength, and has relatively strong water resistance; and meanwhile, the raw materials are wide in source, low in price, green and environment-friendly, good in degradability and strong in practicability.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a highly water-resistant fully degradable plastic film and a preparation method thereof. Background technique [0002] Plastics are widely used in various fields of economy and life, such as shopping bags, garbage bags, plastic cups, disposable lunch boxes in daily life, and agricultural film in production. However, since plastic is difficult to degrade, it is the source of "white pollution", which has caused a negative impact on the natural environment that cannot be ignored. With the seriousness of pollution and the improvement of environmental protection awareness, biodegradable plastics as a substitute have received widespread attention and become one of the effective methods to solve the environmental pollution caused by plastic waste. [0003] PVA is a polyhydroxy polymer obtained by hydrolysis of polyvinyl acetate, which can be completely decomposed within 6 months in t...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08L97/02C08L29/04C08L67/04C08L33/04C08K13/02C08K3/34C08K5/053C08K5/1515C08K5/1539C08K5/20
Inventor 陈可夏陈可亮潮建平
Owner TONGLING FOUNDER PLASTICS TECH
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