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High-efficiency oxygen-insulation water-insulation blended full-degradable plastic film and preparation method thereof

The invention relates to a plastic film and blending technology, which is applied to the field of blending fully degradable plastic film with high efficiency oxygen and water barrier and its preparation, which can solve the problems of hindering the wide application of starch plastics, deteriorating physical and mechanical properties, poor compatibility, and the like. Achieve good far-infrared reflectivity, good gas barrier performance, and meet the effect of use requirements

Inactive Publication Date: 2015-09-16
TONGLING FOUNDER PLASTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while starch can improve the degradability of plastics, on the one hand, it will cause a decrease in its physical and mechanical properties, making it difficult to process. Poor, resulting in a significant decline in the mechanical properties of the film, poor water barrier performance, thus hindering the wide application of starch plastics in the process of industrialization
[0003] Polyvinyl alcohol is a widely used high molecular polymer, its performance is between plastic and rubber, it contains a large number of polar hydroxyl groups, its toxicity is very low, its molecular chain structure is symmetrical and regular, and it has unique strong adhesion, Film flexibility, smoothness, oil resistance, solvent resistance, protective colloid, gas barrier and water resistance after special treatment, but also has a certain degree of biodegradability, in the presence of bacteria in a wet environment 6 It can be completely decomposed into water and carbon dioxide within one month. It is a completely biodegradable material, but the degradation process has high requirements on the degradation environment, so the degradation rate is still relatively slow.

Method used

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Embodiment Construction

[0015] specific implementation plan

[0016] The present invention will be described in detail below through specific examples.

[0017] A blended fully degradable plastic film with high-efficiency oxygen and water barriers, prepared from the following raw materials in parts by weight (kg): corn starch 60, nano-montmorillonite 7, peanut oil 0.6, tetrabutyl titanate 1.2, ramie Magu 12, polyvinyl alcohol 27, xanthan gum 1, sodium carboxymethyl cellulose 2, polyethylene glycol 14, polymethylethylene carbonate 7, pulula 4, ethyl silicone oil 2;

[0018] A blended fully degradable plastic film with high-efficiency oxygen and water insulation described in the present invention is made by the following specific steps:

[0019] (1) Mix cornstarch and nano-montmorillonite evenly and put it in an oven, dry it at 130°C for 120 minutes, take it out, cool it to room temperature, and vibrate the mixed powder by ultrasonic for 30 minutes (control the temperature of the water bath at 30°C ,...

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Abstract

The invention discloses a high-efficiency oxygen-insulation water-insulation blended full-degradable plastic film. The high-efficiency oxygen-insulation water-insulation blended full-degradable plastic film is prepared from, by weight, 60 to 65 parts of corn starch, 7 to 9 parts of nano montmorillonite, 0.6 to 0.7 part of peanut oil, 1.2 to 1.4 parts of tetrabutyl titanate, 12 to 14 parts of ramie straw, 27 to 30 parts of polyvinyl alcohol, 1 to 2 parts of xanthan gum, 2 to 4 parts of sodium carboxymethylcellulose, 14 to 15 parts of polyethylene glycol, 7 to 9 parts of poly propylene carbonate, 4 to 6 parts of Pulullan, and 2 to 3 parts of ethyl silicon oil. According to a preparation method, synergistic effect of polyving akohol, polyethylene glycol, and poly propylene carbonate is realized; so that the melting point of polyving akohol is reduced, better blending with a starch master batch is realized, barrier property of plastic film is improved, and oxygen insulation and water insulation effects are excellent. The high-efficiency oxygen-insulation water-insulation blended full-degradable plastic film can be taken as food packaging bags and preservative film, and is capable of insulating oxygen and water, and realizing fresh-keeping effects; and prepared products are capable of satisfying using requirements and can be degraded rapidly after abandoning.

Description

technical field [0001] The invention relates to the technical field of plastic films, in particular to a blended fully degradable plastic film with high-efficiency oxygen and water barriers and a preparation method thereof. Background technique [0002] In recent years, due to the increasingly serious "white pollution" caused by waste plastics that are difficult to degrade, it has attracted widespread attention from all over the world. Countries around the world have successively issued relevant laws and regulations restricting or prohibiting the use of non-degradable plastic packaging. On the other hand, because petroleum, the raw material for making traditional plastics, is a non-renewable resource, it will be exhausted with the massive use of human beings. Therefore, it is imminent to develop environmentally friendly plastics that use renewable resources as raw materials and are degradable. The use of biodegradable starch materials to prepare degradable packaging films ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L97/02C08L29/04C08L1/28C08L69/00C08L5/00C08L83/04C08L91/00C08K9/04C08K3/34
Inventor 万红霞陈可夏
Owner TONGLING FOUNDER PLASTICS TECH
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