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Photodegradable environment-friendly plastic packaging bag and production process thereof

An environmentally friendly plastic and packaging bag technology, applied in the field of packaging bag degradation, can solve the problem that the degradation rate cannot meet the application requirements, and achieve the effect of improving the photodegradation rate

Active Publication Date: 2022-02-15
ZHENGZHOU YANFENG PLASTIC PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The degradation rate of existing photodegradable plastic packaging bags cannot meet the application requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] Optionally, stearic acid symbiotic rare earth (RE-St) is self-made, and the preparation method includes the following steps: first crush and grind the ore containing La, Ce, Pr and other symbiotic rare earth elements into 100 g of rare earth mineral powder larger than 40 mesh, add In the reaction pot, add 600 g of excess hydrochloric acid while stirring, and make an aqueous solution of rare earth chloride under continuous heating, filter off the residue, continue heating to form a viscous substance, and cool to make a solid rare earth chloride solution. Then in the 2000ml four-necked flask equipped with thermometer, stirrer, dropping funnel and spherical condenser, add 30wt% sodium stearate aqueous solution (colorless transparent clear liquid of PH14) 610g, heat to 100 ℃, in constant Slowly drip 530 g of 30 wt % o rare earth chloride aqueous solution (light brown solution of pH 4) under stirring, finish dropping within 1.5 h and keep warm for 1 h, so that the complex pre...

Embodiment 1

[0056] The photodegradable environmentally friendly plastic packaging bag of this embodiment is made of the following raw materials: 90kg of polyethylene, 1kg of crosslinking agent, 2kg of dispersant, 0.5kg of plasticizer, 0.1kg of photosensitizer, 0.1kg of photosensitizer, Compatible agent 0.1kg, conversion agent 1kg, wherein, polyethylene is low-density polyethylene, cross-linking agent is vinyl-terminated poly(dimethylsiloxane), dispersant is polyacrylamide, and plasticizer is glycerol triacetate ester, the compatibilizer is methyl methacrylate-maleic anhydride, the photosensitizer is cobalt acetylacetonate, the conversion agent is composed of indocyanine green and nano iron sulfide in a mass ratio of 1:1, and the photosensitizer is composed of iron stearate , Cerium stearate in a mass ratio of 1:2.

[0057] The production process of the photodegradable environmentally friendly plastic packaging bag of the present embodiment comprises the following steps:

[0058] (1) Mix ...

Embodiment 2-5

[0062] Examples 2-5 respectively provide photodegradable environmentally friendly plastic packaging bags with different ratios of raw material components. The components of the photodegradable environmentally friendly plastic packaging bags corresponding to each embodiment are shown in Table 1, and the unit of raw material ratio is kg.

[0063] Embodiment 1-5 photodegradation environmental protection plastic packaging bag each component distribution ratio

[0064] raw material Example 1 Example 2 Example 3 Example 4 Example 5 polyethylene 90 93 95 93 93 crosslinking agent 1 1.5 2 1.5 1.5 Dispersant 2 3 4 3 3 plasticizer 0.5 0.8 1 0.8 0.8 Photosensitizer 0.1 0.2 0.5 0.3 0.4 photosensitizer 0.1 0.3 0.5 0.3 0.3 Compatibilizer 0.1 0.3 0.8 0.4 0.5 Conversion agent 1 1.2 2 1.5 1.8

[0065] The difference between the photodegradable environmentally friendly plastic packaging bag of E...

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Abstract

The invention relates to the technical field of packaging bag degradation, and particularly discloses a photodegradable environment-friendly plastic packaging bag and a production process thereof. The photodegradable environment-friendly plastic packaging bag is mainly prepared from the following raw materials: polyethylene, a cross-linking agent, a dispersing agent, a plasticizer, a photosensitizer, a photosensitive accelerant, a compatilizer and a transforming agent. The transforming agent is at least two of indocyanine green, nano iron sulfide and polyaniline. The photosensitizer is at least two of iron stearate, cerium stearate and stearic acid symbiotic rare earth. The production process of the photodegradable environment-friendly plastic packaging bag comprises the following steps of: (1) mixing and stirring raw materials, heating and dehydrating to obtain a mixture; (2) adding the mixture into a film blowing machine, heating, blowing the film, cooling and pressing edges to obtain a material film; and (3) preparing a finished degradable plastic packaging bag from the material film. The photodegradable environment-friendly plastic packaging bag prepared by the invention is high in degradation rate.

Description

technical field [0001] This application relates to the technical field of packaging bag degradation, more specifically, it relates to a photodegradable environmentally friendly plastic packaging bag and its production process. Background technique [0002] As a material, plastic has penetrated into every field of people's life. As plastic production continues to grow and its uses expand, so does waste. Since plastics are difficult to degrade and rot in the natural environment or in garbage dumps, it is easy to cause serious pollution problems. [0003] Photodegradable plastic packaging bag is a new type of plastic product in recent years. Its various properties can meet the requirements of use and have the characteristics of constant performance during the storage period. After use, it can be degraded into a pair of environmental harmless substance. [0004] The degradation rate of existing photodegradable plastic packaging bags cannot meet the application requirements. ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L35/02C08L79/02C08L27/06C08L51/06C08K5/07C08K5/3467C08K5/098C08K3/30C08K13/02C08K3/22
CPCC08L23/06C08L2201/06C08L2207/066C08K2201/014C08K2003/3009C08K2201/011C08K2003/2241C08K2201/005C08L35/02C08K5/07C08K5/3467C08K5/098C08K3/30C08K13/02C08L79/02C08L27/06C08L51/06C08K3/22Y02W90/10
Inventor 李栋梁黄建峰
Owner ZHENGZHOU YANFENG PLASTIC PACKAGING
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