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Preparation method of photodegradation polyethylene film

A polyethylene film and photodegradation technology, applied in the field of polymer plastic manufacturing, can solve the problems of long sunshine time and narrow scope, and achieve the effects of strong light-gathering ability, improving service life and enhancing photodegradation efficiency.

Inactive Publication Date: 2019-03-01
湖北冠誉塑料包装制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem existing in the prior art is: because photodegradable plastic itself is only used in the area with long sunshine hours and sufficient light, it should have a narrow scope, mostly limited to farmland cover, etc., so how to improve the photodegradability of the photodegradable polyethylene film Degradation rate, so that it has a wider application field is a technical problem that needs to be overcome at present

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0023] A kind of preparation method of photodegradation polyethylene film

[0024] Prepare a hydrophobic membrane:

[0025] Mix 150g of polyethylene wax and 60g of polyethylene press, add 3g of dispersant and 2g of pro-oxidant to melt at a temperature of 200°C; continue to feed oxygen for 2.5 hours; then add 65g of polyethylene glycol and 0.8g of acid catalyst, and pass Condensation reaction was carried out under high temperature conditions of 150°C for 5 hours by entering nitrogen gas; polyethylene wax hydrophobic film was obtained by extrusion molding;

[0026] Preparation of hydrophilic membrane:

[0027] Mix 200g of polyvinyl alcohol and 80g of polyethylene, add 15g of starch and 3g of co-oxidant to melt at a temperature of 300°C, add 1.5g of photoinitiator and 5g of photosensitizer to the above polyethylene melt; continue to feed oxygen for 2 hours Then add 50g Polyethylene Glycol and 1g acid catalyst, and pass into nitrogen to carry out condensation reaction under high...

Embodiment 2

[0037] A kind of preparation method of photodegradation polyethylene film

[0038] Prepare a hydrophobic membrane:

[0039] Mix 300g of polyethylene wax and 100g of polyethylene press, add 8g of dispersant and 3g of pro-oxidant to melt at 260°C, and continue to feed oxygen for 3 hours; then add 130g of polyethylene glycol and 2g of acid catalyst, and pass through Nitrogen condensation reaction under high temperature conditions for 5 hours; extrusion molding to obtain polyethylene wax hydrophobic film;

[0040] Preparation of hydrophilic membrane:

[0041] Mix 300g of polyvinyl alcohol and 100g of polyethylene, add 30g of starch and 5g of oxidant to melt at a temperature of 320°C; add 3g of photoinitiator and 12g of photosensitizer to the polyethylene melt; continue to feed oxygen for 3 hours; Then add 150g polyethylene glycol and 2g acid catalyst, and pass into nitrogen and carry out condensation reaction under high temperature condition, react after 9 hours, extrusion moldi...

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PUM

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Abstract

The invention discloses a preparation method of a photodegradation polyethylene film. The preparation method comprises the following steps that a hydrophobic film is prepared, a hydrophilic film is prepared, a polyethylene film is prepared, and the hydrophilic film, the hydrophobic film and the polyethylene film are composited, wherein in the polyethylene film preparing step, surface modified nano-TiO2 powder is added. The preparation method of the photodegradation polyethylene film has the effects that through a polyethylene material manufactured by the preparation method, the hydrophobicityof the material surface can be significantly improved, the service life of the plastic film is prolonged, the antimicrobial ability of the surface is enhanced, after the hydrophobic film falls off, the hydrophilic film can effectively absorb water beads, strong light condensation force is formed, and the photodegradation progress is accelerated.

Description

technical field [0001] The invention relates to the field of polymer plastic manufacturing, in particular to a method for preparing a photodegradable polyethylene film. Background technique [0002] For now, with the demand for low-carbon life, traditional plastics are gradually withdrawing from the stage of history, and degradable plastic materials have emerged as the times require. At present, the two mainstream degradable materials are photodegradable materials and biodegradable materials. Among them, the technology of photodegradable plastics has matured in the 1980s, and the output has grown rapidly. [0003] The problem existing in the prior art is: because photodegradable plastic itself is only used in the area with long sunshine hours and sufficient light, it should have a narrow scope, mostly limited to farmland cover, etc., so how to improve the photodegradability of the photodegradable polyethylene film Degradation rate, so that it has a wider application field i...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L23/30C08L29/04C08K9/04C08K3/22B29C65/48
CPCB29C65/4805C08J5/18C08J2323/30C08J2329/04C08K9/04C08K2003/2241C08K2201/011
Inventor 蔡学林
Owner 湖北冠誉塑料包装制品有限公司
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