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Method for preparing barrier degradable composite plastic film

A plastic film and barrier technology, applied in the field of degradable plastic products, can solve the problems of plastic waste accumulation, environmental hazards, white pollution, etc., and achieve the effects of reduced degree of agglomeration, high degree of lipophilicity, and strong hydrophobicity

Inactive Publication Date: 2020-03-27
界首市睿阳塑胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the chemical stability of general-purpose plastics, they will exist stably in the environment for a long time after they are abandoned, causing a large amount of plastic waste to accumulate in the environment, causing serious harm to the environment, such as white pollution, agricultural white cancer And other issues

Method used

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  • Method for preparing barrier degradable composite plastic film

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Embodiment 1

[0025] A method for preparing a barrier degradable composite plastic film, characterized in that it comprises the following steps, the following raw materials are by weight:

[0026] (1) Preparation of rare earth lanthanum-doped nano-titanium dioxide:

[0027] Add deionized water to 2 parts of modified nano-titanium dioxide at a mass ratio of 1:100, ultrasonically disperse for 1 hour, add 0.2 parts of lanthanum chloride, stir at 80°C for 2 hours, dry at 110°C for 4 hours, and then put in 700°C Calcined in a resistance furnace for 2 hours, and ground through a 200-mesh sieve to obtain rare earth lanthanum-doped nano-titanium dioxide;

[0028] Among them, the use of ultrasonic-microwave-assisted sodium laurate to modify nano-titanium dioxide: add 2 parts of nano-titanium dioxide and 0.003 parts of dispersant sodium hexametaphosphate to 67 parts of distilled water, adjust the pH to 5 with hydrochloric acid, add 0.3 parts of sodium laurate, and add 0.3 parts of sodium laurate. Af...

Embodiment 2

[0035] A method for preparing a barrier degradable composite plastic film, characterized in that it comprises the following steps, the following raw materials are by weight:

[0036] (1) Preparation of rare earth lanthanum-doped nano-titanium dioxide:

[0037] Add deionized water to 4 parts of modified nano-titanium dioxide at a mass ratio of 1:100, ultrasonically disperse for 2 hours, add 0.4 parts of lanthanum chloride, stir at 85°C for 1 hour, dry at 115°C for 3 hours, and then put it in 710°C Calcined in a resistance furnace for 1 hour, and ground through a 200-mesh sieve to obtain rare earth lanthanum-doped nano-titanium dioxide;

[0038] Among them, the use of ultrasonic-microwave-assisted sodium laurate to modify nano-titanium dioxide: add 4 parts of nano-titanium dioxide and 0.007 parts of dispersant sodium hexametaphosphate to 133 parts of distilled water, adjust the pH to 5 with hydrochloric acid, add 0.6 parts of sodium laurate, and add 0.6 parts of sodium laurate. ...

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Abstract

The invention discloses a method for preparing a barrier degradable composite plastic film. The method comprises the steps of: adding deionized water into modified nano titanium dioxide, carrying outultrasonic dispersion, adding lanthanum chloride, performing stirring and then drying, performing calcining in a resistance furnace, performing grinding and screening to obtain rare earth lanthanum-doped nano titanium dioxide; mixing citric acid modified kaolin with urea, performing grinding, heating, washing with water and suction filtration, and performing drying in a drying oven to obtain ureaintercalated kaolin; uniformly mixing iron stearate, polyethylene micro-powder and oxidized polyethylene wax with the obtained rare earth lanthanum-doped nano titanium dioxide and urea intercalated kaolin, performing extruding by using a double-screw extruder to obtain master batch, uniformly mixing the master batch with linear low-density polyethylene, and performing blow molding by using a filmblow molding machine to obtain the degradable composite plastic film.

Description

technical field [0001] The invention belongs to the field of degradable plastic products, and in particular relates to a method for preparing a barrier degradable composite plastic film. Background technique [0002] Plastic products have the advantages of strong stability, light weight, and low production cost, so they are deeply favored by people. In recent decades, the plastic industry has developed rapidly, and the use of a large number of plastic products, especially disposable plastic products, has brought great convenience to human life. However, due to the chemical stability of general-purpose plastics, they will exist stably in the environment for a long time after they are abandoned, causing a large amount of plastic waste to accumulate in the environment, causing serious harm to the environment, such as white pollution, agricultural white cancer And other issues. Contents of the invention [0003] The object of the present invention is to solve the existing pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L23/08C08L23/06C08L23/30C08K13/06C08K9/04C08K3/34C08K3/22C08K3/08C08K5/098
CPCC08J5/18C08J2323/08C08J2423/06C08J2423/30C08K3/08C08K3/346C08K5/098C08K9/04C08K13/06C08K2003/2241C08K2201/011
Inventor 孙玉英
Owner 界首市睿阳塑胶科技有限公司
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