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Environment-friendly degradable polyethylene plastic bag

A polyethylene plastic bag, easily degradable technology, applied in the field of plastic bags, can solve the problems of not too obvious effect, not obvious degradation effect, reduce the use of plastic bags, etc., achieve excellent biodegradability, improve processing and molding performance, improve The effect of wet compressive strength

Inactive Publication Date: 2018-04-13
全椒县三安塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plastic bags are a necessity in people's daily life, but the direct contradiction between the convenience of using plastic bags and environmental pollution is becoming more and more serious. For this reason, the country has issued a plastic restriction order, but the effect is not too obvious. In addition to reducing the use of plastic bags In addition, the material of plastic bags is also an aspect to be considered. For this reason, people have begun to study degradable plastic bags. However, although the existing plastic bags can be well degraded into fragments in an exposed environment, urban garbage tends to Compared with the landfill method, these degraded garbage fragments are buried in garbage or soil, and the degradation effect is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An environment-friendly and easily degradable polyethylene plastic bag, containing 15% of its quality modified starch and 10% of silanized bentonite in the environment-friendly and easily degradable polyethylene plastic bag; the preparation method of the modified starch is:

[0019] (1) Mix cornstarch, soybean starch, and nano-silicon dioxide uniformly in a mass ratio of 20:10:1, and microwave for 5 minutes to obtain a starch mixture;

[0020] (2) After uniformly mixing the starch mixture and the modified solution at a ratio of 150g: 300mL, add it to the reaction kettle, stir at 95°C at a speed of 1200r / min for 2 hours, then filter, dry to constant weight, and obtain A pre-modified starch mixture; the modified solution is made of the following components in parts by weight: 5 parts by weight of acrylic acid, 1 part of sodium hypochlorite, 2 parts of methyl siloxane, 15 parts of ethanol, and 50 parts of deionized water;

[0021] (3) Put the chloroform-ethanol mixture wit...

Embodiment 2

[0030] An environment-friendly and easily degradable polyethylene plastic bag, containing 20% ​​of its quality modified starch and 12% silanized bentonite in the environment-friendly and easily degradable polyethylene plastic bag; the preparation method of the modified starch is:

[0031] (1) Mix cornstarch, soybean starch, and nano-silicon dioxide uniformly in a mass ratio of 20:10:1, and microwave for 5 minutes to obtain a starch mixture;

[0032] (2) After uniformly mixing the starch mixture and the modified solution at a ratio of 150g: 300mL, add it to the reaction kettle, stir at 95°C at a speed of 1200r / min for 2 hours, then filter, dry to constant weight, and obtain A pre-modified starch mixture; the modified solution is made of the following components in parts by weight: 5 parts by weight of acrylic acid, 1 part of sodium hypochlorite, 2 parts of methyl siloxane, 15 parts of ethanol, and 50 parts of deionized water;

[0033] (3) Put the chloroform-ethanol mixture with...

Embodiment 3

[0042] An environment-friendly and easily degradable polyethylene plastic bag, containing 18% of its quality modified starch and 11% of silanized bentonite in the environment-friendly and easily degradable polyethylene plastic bag; the preparation method of the modified starch is:

[0043] (1) Mix cornstarch, soybean starch, and nano-silicon dioxide uniformly in a mass ratio of 20:10:1, and microwave for 5 minutes to obtain a starch mixture;

[0044] (2) After uniformly mixing the starch mixture and the modified solution at a ratio of 150g: 300mL, add it to the reaction kettle, stir at 95°C at a speed of 1200r / min for 2 hours, then filter, dry to constant weight, and obtain A pre-modified starch mixture; the modified solution is made of the following components in parts by weight: 5 parts by weight of acrylic acid, 1 part of sodium hypochlorite, 2 parts of methyl siloxane, 15 parts of ethanol, and 50 parts of deionized water;

[0045] (3) Put the chloroform-ethanol mixture wit...

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Abstract

The invention discloses an environment-friendly degradable polyethylene plastic bag, and relates to the technical field of plastic bags. The environment-friendly degradable polyethylene plastic bag isprepared from the following components by mass: 15 to 20% of modified starch and 10 to 12% of silanization bentonite. The environment-friendly degradable polyethylene plastic bag has the advantages that by adding the modified starch and the silanization bentonite into the polyethylene plastic system, the crosslinking due to heat aging in the preparation process of the plastic bag can be prevented, the gelling can be prevented, the heat stability and anti-oxidizing property of the prepared plastic bag are greatly improved, the compatibility between the components is improved, and the plasticizing effect is realized; the prepared plastic bag has excellent biodegradability.

Description

technical field [0001] The invention belongs to the technical field of plastic bags, in particular to an environmentally friendly and easily degradable polyethylene plastic bag. Background technique [0002] Polyethylene (PE for short) is a thermoplastic resin obtained by polymerizing ethylene. Polyethylenes are crystalline thermoplastic resins whose chemical structure, molecular weight, degree of polymerization and other properties are largely dependent on the polymerization method used. Polyethylene is a typical thermoplastic, which is an odorless, tasteless, non-toxic, flammable white powder; polyethylene is easy to be photooxidized, thermally oxidized, and ozonized, and it is easy to degrade under the action of ultraviolet rays; polyethylene has good chemical stability. At room temperature, it can withstand dilute nitric acid, dilute sulfuric acid and any concentration of hydrochloric acid, hydrofluoric acid, phosphoric acid, formic acid, acetic acid, ammonia water, ami...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L3/06C08K9/06C08K3/34C08K3/36C08B31/04
CPCC08L23/06C08B31/04C08L2201/06C08L2203/16C08L3/06C08K9/06C08K3/346C08K3/36
Inventor 梁华庆
Owner 全椒县三安塑业有限公司
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