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Preparation method of degradable PE film

A degradable masterbatch and mechanism technology, applied in the field of degradable PE film preparation, can solve problems such as easy agglomeration, poor weather resistance, and difficult to mix uniformly

Active Publication Date: 2022-04-05
NANTONG BAOJIALI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, titanium dioxide also has some disadvantages. It must be added as a powder. Generally, nano-titanium dioxide is used, which is easy to agglomerate and difficult to mix evenly. At the same time, the photosensitivity of titanium dioxide will cause catalysis to occur during use, such as under sunlight. poor weather resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Heat the gallium to 31 degrees Celsius to melt, drop it into the PE micropowder, keep stirring, and keep it at 31 degrees Celsius, mix the PE micropowder and liquid gallium for 1 hour, then mix it into the modified starch, and use an extruder to granulate to prepare a degradable masterbatch , and then prepare the above-mentioned degradable masterbatch into a film through a blow molding machine. Random sampling and analysis of PE micropowder, the mass percentage of gallium content is 2~6.2%.

Embodiment 2

[0022] Heat the gallium to 60 degrees Celsius to melt, drop it into the PE micropowder, keep stirring, and keep it at 60 degrees Celsius, mix the PE micropowder and liquid gallium for 1 hour, then mix it into the modified starch, and use an extruder to granulate to prepare a degradable masterbatch , and then prepare the above-mentioned degradable masterbatch into a film through a blow molding machine. Random sampling and analysis of PE micropowder, the mass percentage of gallium content is 3~5.5%.

Embodiment 3

[0024] Heat the gallium to 70 degrees Celsius to melt, drop it into the PE micropowder, keep stirring, and keep it at 70 degrees Celsius, mix the PE micropowder and liquid gallium for 1 hour, then mix it into the modified starch, and use an extruder to granulate to prepare a degradable masterbatch , and then prepare the above-mentioned degradable masterbatch into a film through a blow molding machine. Random sampling and analysis of PE micropowder, the mass percentage of gallium content is 3~5%.

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PUM

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Abstract

The invention discloses a preparation method of a degradable PE film, which comprises the following steps: heating gallium to a temperature higher than a melting point to melt, dripping into PE micro powder, continuously stirring, keeping the temperature until the PE micro powder is uniformly mixed with the liquid gallium, then mixing with modified starch, granulating by using an extruder to prepare degradable master batches, and then preparing the degradable master batches into a film by using a blow molding machine. Gallium oxide is used as a photocatalyst to replace silicon dioxide, the silicon dioxide is a light ultraviolet absorbent, and the gallium oxide can be used as a deep ultraviolet absorbent, so that the service life of the degradable plastic under sunlight is prevented from being shortened. When degradation is needed, ultraviolet rays with specific wavelengths are used for digestion, and meanwhile, the ultraviolet rays are mixed with starch degradable substances to generate a synergistic effect.

Description

technical field [0001] The invention relates to a method for preparing a PE film, in particular to a method for preparing a degradable PE film. Background technique [0002] The use of plastic materials is a major technological revolution that changes the world. The stability and convenience of plastics provide people with many opportunities to replace traditional materials in production and life, and their applications are becoming more and more extensive. But what follows is the problem of secondary pollution of plastics. Many plastics can last for decades or hundreds of years without degrading, and a large amount of plastics has become a source of pollution. This is an unexpected problem encountered after plastics are widely used. [0003] In order to solve this problem and develop degradable plastics, scientific and technological workers have paid more and more attention in recent years and invested a lot of energy. There are basically two ideas now. One is to add oxid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K3/08C08K3/22C08J5/18
Inventor 崔铨卿崔宇明
Owner NANTONG BAOJIALI NEW MATERIAL CO LTD
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