Degradable plastic layer material of paper plastic bag

A technology for degrading plastic and layer materials, applied in the field of degradable plastic layers, can solve the problems of long degradation time, low cost of plastic bags, low mechanical strength, etc., and achieve the effects of avoiding environmental pollution, improving the burst resistance index, and simple preparation methods

Inactive Publication Date: 2019-01-04
合肥旭亚新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Plastic bags are widely used in daily life. Paper bags are environmentally friendly and have low mechanical strength, but are easy to degrade. Plastic bags are low in cost and difficult to degrade, which limits their further use. Paper-plastic bags are easy to use and have good mechanical properties. Strong new materials are widely used in our lives. Paper-plastic bags usually include a paper layer and a plastic layer. The current plastic layer is usually made of polypropylene. Polypropylene has poor photodegradability and biodegradability and a long degradation time. Will cause irreversible damage to the environment, therefore, there is a need for a plastic layer that can enhance the strength of the paper layer and improve the degradability

Method used

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  • Degradable plastic layer material of paper plastic bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A degradable plastic layer material for a paper-plastic bag, comprising the following raw materials in parts by weight: 24 parts of polyvinyl alcohol, 6 parts of vinyl acetate, 1.5 parts of N-isopropylacrylamide, 38 parts of modified cornstarch, sodium base 4 parts of montmorillonite, 0.6 part of boric acid, 0.4 part of plasticizer;

[0017] The preparation method of described modified cornstarch is:

[0018] (1) Mix corn starch with copper chloride solution with a mass concentration of 7.5%, stir evenly, heat to 55°C, adjust the pH value to 5.5, and stir for 1.5 hours. After filtering, rinse the obtained filter residue with deionized water to medium properties, and then dried at a temperature of 52°C until the weight is constant to obtain an intermediate material;

[0019] (2) Add chlorosulfonic acid equivalent to 8% of its weight into N,N-dimethylformamide at a temperature of 4°C, and stir for 8 minutes to obtain a mixed solution;

[0020] (3) Mix the mixed solution...

Embodiment 2

[0024] A degradable plastic layer material for a paper-plastic bag, comprising the following raw materials in parts by weight: 22 parts of polyvinyl alcohol, 8 parts of vinyl acetate, 1 part of N-isopropylacrylamide, 40 parts of modified cornstarch, sodium base 5 parts of montmorillonite, 1.0 part of boric acid, 0.2 part of plasticizer;

[0025] The preparation method of described modified cornstarch is:

[0026] (1) Mix cornstarch with 6.5% copper chloride solution, stir evenly, heat to 60°C, adjust the pH value to 5.8, and stir for 1 hour. After filtering, rinse the obtained filter residue with deionized water to medium properties, and then dried at a temperature of 55°C until the weight is constant to obtain an intermediate material;

[0027] (2) Add chlorosulfonic acid equivalent to 6% of its weight into N,N-dimethylformamide at a temperature of 3°C, and stir for 10 minutes to obtain a mixed solution;

[0028] (3) Mix the mixed solution and the intermediate material at a...

Embodiment 3

[0032] A degradable plastic layer material for a paper-plastic bag, comprising the following raw materials in parts by weight: 26 parts of polyvinyl alcohol, 4 parts of vinyl acetate, 2 parts of N-isopropylacrylamide, 34 parts of modified cornstarch, sodium base 3 parts of montmorillonite, 0.2 part of boric acid, 0.6 part of plasticizer;

[0033] The preparation method of described modified cornstarch is:

[0034] (1) Mix corn starch with copper chloride solution with a mass concentration of 8.5%, stir evenly, heat to 50°C, adjust the pH value to 5.2, and stir for 2 hours. After filtering, rinse the resulting filter residue with deionized water to medium properties, and then dried at a temperature of 50°C until the weight is constant to obtain an intermediate material;

[0035] (2) Add chlorosulfonic acid equivalent to 10% of its weight into N,N-dimethylformamide at a temperature of 5°C, and stir for 5 minutes to obtain a mixed solution;

[0036] (3) Mix the mixed solution a...

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Abstract

The invention belongs to the technical field of degradable plastic layers of paper plastic bags and particularly relates to a degradable plastic layer material of a paper plastic bag. The material isprepared from, by weight, 22-26 parts of polyvinyl alcohol, 4-8 parts of vinyl acetate, 1-2 parts of N-isopropylacrylamide, 34-40 parts of modified corn starch, 3-5 parts of sodium-based montmorillonite, 0.2-1.0 part of boric acid and 0.2-0.6 part of plasticizer. Compared with the prior art, the degradable plastic layer material has the advantages that the corn starch is reasonably modified, the weather resistance of the material can be improved, the corn starch can be tightly bonded to a paper layer, the burst index and antibacterial property of the paper layer can be improved, the material has biodegradability, environmental pollution is avoided, a preparation method is simple, and the material is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of degradable plastic layers of paper-plastic bags, and in particular relates to a degradable plastic layer material of paper-plastic bags. Background technique [0002] Plastic bags are widely used in daily life. Paper bags are environmentally friendly and have low mechanical strength, but are easy to degrade. Plastic bags are low in cost and difficult to degrade, which limits their further use. Paper-plastic bags are easy to use and have good mechanical properties. Strong new materials are widely used in our lives. Paper-plastic bags usually include a paper layer and a plastic layer. The current plastic layer is usually made of polypropylene. Polypropylene has poor photodegradability and biodegradability and a long degradation time. It will cause irreversible damage to the environment. Therefore, there is a need for a plastic layer that can enhance the strength of the paper layer and improve the degradabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L29/04C08K3/34C08K3/38
CPCC08L3/02C08K2003/387C08L2201/06C08L29/04C08K3/346C08K3/38
Inventor 王永国
Owner 合肥旭亚新材料科技有限公司
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