Degradable thin film and preparing method

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...

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

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