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Degradable composite thin film material and preparation method thereof

A composite film and film material technology, applied in the field of composite film material and its preparation, degradable composite film material and its preparation field, can solve the problem of poor tensile properties, poor heat resistance, poor tensile properties of degradable film materials, etc. problem, achieve high tensile strength and heat resistance, and improve performance

Active Publication Date: 2014-11-12
鹤山运城新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem to be solved: conventional degradable composite film plastics are usually prepared from modified starch, and the prepared degradable film material has poor tensile properties. Although it can be decomposed in a short time, due to its poor tensile Performance and poor heat resistance, can not be used in conditions that require high tensile properties and heat resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Raise the temperature of the reactor to 180℃, and after the specified temperature, put 15kg of hydroxypropyl starch, 19kg of hydroxyethylcellulose, 9kg of 1,2-propylene glycol, and polypropylene glycol into the reactor. 2000 is 4kg, lignocellulose is 9kg, and polylactic acid fiber is 7kg. After adding hydroxypropyl starch, hydroxyethyl cellulose, 1,2-propylene glycol, polypropylene glycol 2000, lignocellulose, and polylactic acid fiber, the reaction kettle Stirring the raw materials in the process, stir all the ingredients until they are evenly melted;

[0025] (2) The molten degradable composite material in the reactor is prepared into a film, and the process of preparing the film is as follows: the molten degradable material is subjected to twin-screw extrusion processing, and the temperature during extrusion is divided into three sections: the first section is 180℃, the second stage is 190℃, and the third stage is 200℃;

[0026] (3) After twin-screw extrusion, the fi...

Embodiment 2

[0028] (1) Raise the temperature of the reactor to 160℃, and after the specified temperature, put 14kg of hydroxypropyl starch, 20kg of hydroxyethylcellulose, 8kg of 1,2-propylene glycol, and polypropylene glycol into the reactor. 2000 is 7kg, lignocellulose is 7kg, and polylactic acid fiber is 10kg. After adding hydroxypropyl starch, hydroxyethyl cellulose, 1,2-propanediol, polypropylene glycol 2000, lignocellulose, and polylactic acid fiber, Stirring the raw materials in the process, stir all the ingredients until they are evenly melted;

[0029] (2) The molten degradable composite material in the reactor is prepared into a film, and the process of preparing the film is as follows: the molten degradable material is subjected to twin-screw extrusion processing, and the temperature during extrusion is divided into three sections: the first section is 170℃, the second stage is 185℃, and the third stage is 195℃;

[0030] (3) After twin-screw extrusion, the film material is compresse...

Embodiment 3

[0032] (1) Raise the temperature of the reactor to 170℃, and after the specified temperature, put 12kg of hydroxypropyl starch, 21kg of hydroxyethylcellulose, 9kg of 1,2-propylene glycol, and polypropylene glycol into the reactor. 2000 is 9kg, lignocellulose is 5kg, and polylactic acid fiber is 14kg. After adding hydroxypropyl starch, hydroxyethyl cellulose, 1,2-propylene glycol, polypropylene glycol 2000, lignocellulose, and polylactic acid fiber, Stirring the raw materials in the process, stir all the ingredients until they are evenly melted;

[0033] (2) The molten degradable composite material in the reactor is prepared into a film, and the process of preparing the film is as follows: the molten degradable material is subjected to twin-screw extrusion processing, and the temperature during extrusion is divided into three sections: the first section is 180℃, 185℃ in the second stage, 200℃ in the third stage;

[0034] (3) After twin-screw extrusion, the film material is compress...

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Abstract

The invention relates to a degradable composite thin film material and a preparation method of the degradable composite thin film material. The degradable composite thin film material consists of the following components in parts by weight: 12-15 parts of hydroxypropyl starch, 19-21 parts of hydroxyethyl cellulose, 8-9 parts of 1,2-propylene glycol, 4-9 parts of polypropylene glycol 2000, 5-9 parts of lignocellulose and 7-14 parts of polylactic acid fiber. The preparation method of the degradable composite thin film material comprises the following steps: heating and dissolving, performing screw extrusion, and drawing and molding. The prepared degradable composite thin film material disclosed by the invention has excellent tensile property and boiling resistance, and can be used for improving the durability of the composite thin film material on the basis of degradability.

Description

Technical field [0001] The invention belongs to the field of film materials, and relates to a composite film material and a preparation method thereof, in particular to a degradable composite film material and a preparation method thereof. Background technique [0002] With the increase in the use of plastic film products, it has brought a lot of pollution to the natural environment. Conventional plastic film products, such as plastic films made of polypropylene, polyvinyl chloride, polyethylene, etc., cannot be degraded naturally in the natural environment. After being placed for many years, it still exists in the natural environment. These non-degradable plastic films increase environmental pollution. [0003] With the strengthening of environmental protection awareness in all walks of life, degradable film plastics have gradually become a mainstream development trend. With the continuous deepening of scientific research, various new degradable film plastics have also emerged, de...

Claims

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Application Information

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IPC IPC(8): C08L1/28C08L3/08C08L71/08C08L97/02C08L67/04B29C47/92B29C48/92
Inventor 张太元
Owner 鹤山运城新材料有限公司
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