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Degradable thin film and preparing method

A degradable film, thermal oxidation degradation technology, applied in the field of degradable film and preparation, can solve the problems of affecting the growth of crops, wasting resources, polluting the air environment, etc., to achieve green sustainable development, high degree of degradation, high degradation rate Effect

Active Publication Date: 2019-02-19
温州银润包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] From the analysis of environmental problems, a large number of discarded plastic products have brought "white pollution" to the human living environment due to their non-degradable properties.
At present, there are many methods used to deal with "white waste" such as plastic waste, such as incineration, recycling, landfill, etc., but the treatment effects are not ideal
If waste plastics are landfilled, this method not only occupies land, but also generally takes hundreds of years to degrade general-purpose plastics, which will cause long-term damage to the soil, affect the growth of crops, and lead to crop yield reduction; if done Incineration treatment will produce a large amount of toxic and harmful gases, pollute the atmospheric environment, and cause secondary pollution to the environment; in addition, a large number of scattered plastics can easily cause animals to eat and die; plastics in groups and bundles enter the pipeline, which can easily cause damage to water conservancy facilities. and the jamming of city facilities
If it is recycled, only 25% of the plastic waste can be processed. In addition, the recycling technology is backward, the processing cost is too high, and the performance and use value of the recycled products are not high.
Our country produces about 5 million tons of plastic waste every year, and only about 30% of these waste plastics are recycled spontaneously by individual owners and produced into different plastic products. waste of resources and environmental pollution

Method used

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  • Degradable thin film and preparing method

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1: a kind of degradable film, it is prepared by the following method:

[0027] (1) dissolving nano-titanium dioxide in N,N-dimethylformamide, adding a thermo-oxidative degradation agent, mixing evenly, controlling the temperature at 105° C. until the solvent evaporates to dryness, and obtaining a thermo-oxidative degradation agent filled with nano-titanium dioxide;

[0028] (2) 100 parts of low-density polyethylene (purchased from Shanghai Petrochemical, with a weight-average molecular weight of 30,000 to 35,000 and a molecular weight distribution index of 2.2, the same below), 30 parts of calcium carbonate, 13.5 parts of pozzolan powder, and 1.5 parts of calcium chloride ( The mass ratio of calcium carbonate, volcanic ash powder and calcium chloride is 1: 0.45: 0.05), 25 parts of starch, 7.2 parts of mineral oil, 0.8 part of PEO-PPO-PEO triblock copolymer (mineral oil and PEO-PPO-PEO The mass of triblock copolymer is 1:0.11), 0.8 part of 2-(2'-hydroxyl-5'-me...

Embodiment 2

[0029] Embodiment 2: a kind of degradable film, it is prepared by the following method:

[0030] (1) dissolving nano-titanium dioxide in N,N-dimethylformamide, adding a thermo-oxidative degradation agent, mixing evenly, controlling the temperature at 110° C. until the solvent evaporates to dryness, and obtaining a thermo-oxidative degradation agent filled with nano-titanium dioxide;

[0031] (2) 100 parts of low-density polyethylene, 32.0 parts of calcium carbonate, 16.0 parts of pozzolan powder, 1.9 parts of calcium chloride (the mass ratio of calcium carbonate, pozzolan powder and calcium chloride is 1:0.50:0.06), 28 parts of starch , 8.8 parts of mineral oil, 1.2 parts of PEO-PPO-PEO triblock copolymer (the quality of mineral oil and PEO-PPO-PEO triblock copolymer is 1:0.14), 1.2 parts of 2-(2'-hydroxyl- 5'-methylphenyl) benzotriazole (abbreviated as UV-P), 1.0 parts of antioxidant 1010 and 9.0 parts of thermal oxidation degradation agent filled with nano titanium dioxide (...

Embodiment 3

[0032] Embodiment 3: a kind of degradable film, it is prepared by the following method:

[0033] (1) dissolving nano-titanium dioxide in N, N-dimethylformamide, adding a thermo-oxidative degradation agent, mixing evenly, controlling the temperature at 115° C. until the solvent evaporates to dryness, and obtaining a thermo-oxidative degradation agent filled with nano-titanium dioxide;

[0034] (2) 100 parts of low-density polyethylene, 33.7 parts of calcium carbonate, 18.6 parts of pozzolan powder, 2.7 parts of calcium chloride (the mass ratio of calcium carbonate, pozzolan powder and calcium chloride is 1:0.55:0.08), 30 parts of starch , 10.4 parts of mineral oil, 1.6 parts of PEO-PPO-PEO triblock copolymer (the quality of mineral oil and PEO-PPO-PEO triblock copolymer is 1:0.15), 1.5 parts of 2-(2'-hydroxyl- 5'-methylphenyl) benzotriazole (abbreviated as UV-P), 1.5 parts of antioxidant 1010 and 12 parts of thermo-oxidative degradation agent filled with nano-titanium dioxide (...

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Abstract

The invention discloses a degradable thin film and a preparing method thereof. The degradable thin film comprises, by mass, 100 parts of low-density polyethylene, 25-30 parts of starch, 30-40 parts ofa plasticizer, 8-12 parts of a dispersing agent, 2-4 parts of a light stabilizer, 2-4 parts of an antioxidant and 5-8 parts of a degrading agent. The thermal oxidation degrading agent comprises a metal organic frame material UIO-66 and a metal organic frame material MOF-5. In the thermal oxidation degrading agent, the mass ratio of the metal organic frame material UIO-66 to the metal organic frame material MOF-5 is 1:(0.9-1.1). The degradable thin film has the advantage of being degradable.

Description

technical field [0001] The invention relates to a degradable film and a preparation method. Background technique [0002] From the analysis of environmental problems, a large number of discarded plastic products have brought "white pollution" to the human living environment because of their non-degradable nature. At present, there are many methods for dealing with "white waste" such as plastic waste, such as incineration, recycling, burying, etc., but the treatment effects are not ideal. If waste plastics are landfilled, this method not only occupies land, but also generally takes hundreds of years to degrade general-purpose plastics, which will cause long-term damage to the soil, affect the growth of crops, and lead to crop yield reduction; if done Incineration treatment will produce a large amount of toxic and harmful gases, pollute the atmospheric environment, and cause secondary pollution to the environment; in addition, a large number of scattered plastics can easily c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L3/02C08L87/00C08K3/22C08K3/26C08K3/16C08K11/00C08J5/18
CPCC08J5/18C08J2403/02C08J2487/00C08K2003/265C08K2003/2241C08K2003/162C08K11/00C08K2201/011C08J2323/06
Inventor 廖荣金
Owner 温州银润包装有限公司
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