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High-performance cellulose acetate composite material and preparation method thereof

A technology of cellulose acetate and composite materials, which is applied in the field of high-performance cellulose acetate composite materials and its preparation, can solve the problems of poor free radical scavenging activity and anti-oxidation activity, poor ultraviolet shielding performance, and poor water vapor barrier property, and achieve fluorescence and free radical scavenging activity, excellent UV shielding performance, simple and environmentally friendly preparation process

Active Publication Date: 2021-01-05
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, pure cellulose acetate material has disadvantages such as poor water vapor barrier, poor ultraviolet shielding performance, and poor free radical scavenging activity (ie, antioxidant activity). When it is applied to packaging, optics, electronics and other fields, poor ultraviolet shielding performance will lead to Poor usability; water vapor passing through the cellulose acetate material will cause deterioration of the protected substance
This will be extremely detrimental to the use of the material and the substance being protected

Method used

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  • High-performance cellulose acetate composite material and preparation method thereof
  • High-performance cellulose acetate composite material and preparation method thereof
  • High-performance cellulose acetate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A high-performance cellulose acetate composite material is composed of the following components by weight: 95 parts of cellulose acetate, 5 parts of abietic acid and 1 part of halloysite.

[0020] The preparation method comprises the steps of:

[0021] (1) 95 parts of cellulose acetate are added to 1500 parts of acetone, stirred and dissolved at 25° C. to obtain a cellulose acetate solution, and set aside;

[0022] (2) 5 parts of abietic acid are added to 250 parts of acetone, stirred and dissolved at 25° C. to obtain an abietic acid solution, which is set aside;

[0023] (3) Disperse 1 part of halloysite in 250 parts of acetone, sonicate for 1 hour, and stir for 1 hour to obtain halloysite dispersion, which is set aside;

[0024] (4) Add the abietic acid solution obtained in step (2) and the halloysite dispersion obtained in step (3) to the cellulose acetate solution obtained in step (1), stir and mix for 2 hours at 25°C, and ultrasonically remove Remove air bubbles ...

Embodiment 2

[0026] A high-performance cellulose acetate composite material is composed of the following components by weight: 95 parts of cellulose acetate, 5 parts of abietic acid, and 3 parts of halloysite nanoparticles.

[0027] The preparation method comprises the steps of:

[0028] (1) 95 parts of cellulose acetate are added to 1500 parts of acetone, stirred and dissolved at 25° C. to obtain a cellulose acetate solution, and set aside;

[0029] (2) 5 parts of abietic acid are added to 250 parts of acetone, stirred and dissolved at 25° C. to obtain an abietic acid solution, which is set aside;

[0030] (3) Disperse 3 parts of halloysite in 250 parts of acetone, sonicate for 1 hour, and stir for 1 hour to obtain halloysite dispersion, which is set aside;

[0031] (4) Add the abietic acid solution obtained in step (2) and the halloysite dispersion obtained in step (3) to the cellulose acetate solution obtained in step (1), stir and mix for 2 hours at 25°C, and ultrasonically remove Re...

Embodiment 3

[0033] A high-performance cellulose acetate composite material is composed of the following components by weight: 95 parts of cellulose acetate, 5 parts of abietic acid and 5 parts of halloysite.

[0034] The preparation method comprises the steps of:

[0035] (1) 95 parts of cellulose acetate are added to 1500 parts of acetone, stirred and dissolved at 25° C. to obtain a cellulose acetate solution, and set aside;

[0036] (2) 5 parts of abietic acid are added to 250 parts of acetone, stirred and dissolved at 25° C. to obtain an abietic acid solution, which is set aside;

[0037] (3) Disperse 5 parts of halloysite in 250 parts of acetone, sonicate for 1 hour, and stir for 1 hour to obtain halloysite dispersion, which is set aside;

[0038] (4) Add the abietic acid solution obtained in step (2) and the halloysite dispersion obtained in step (3) to the cellulose acetate solution obtained in step (1), stir and mix for 2 hours at 25°C, and ultrasonically remove Remove air bubble...

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Abstract

The invention discloses a high-performance cellulose acetate composite material and a preparation method thereof. The high-performance cellulose acetate composite material is prepared from, by weight,95 parts of cellulose acetate, 5 parts of abietic acid and 1-7 parts of halloysite. The abietic acid and the halloysite are used as modifiers, so that the performance of the cellulose acetate can beeffectively improved. The cellulose acetate composite material prepared by the method has excellent ultraviolet shielding performance, thermal stability, water vapor barrier property, fluorescence, DPPH free radical scavenging activity (namely antioxidant activity) and low hygroscopicity, meanwhile, high optical transparency can be kept, and the preparation process is simple, environment-friendly,low in cost, and suitable for large-scale production. Good application prospects are realized in the fields of packaging, ultraviolet protection and the like.

Description

technical field [0001] The invention belongs to the technical field of cellulose acetate composite materials, and in particular relates to a high-performance cellulose acetate composite material and a preparation method thereof. Background technique [0002] Cellulose acetate and abietic acid are environmentally friendly biodegradable materials with broad application prospects. Cellulose acetate has the advantages of easy film formation, good hydrophilicity, easy degradation, and high permeation flux after film formation, and is favored by researchers. However, pure cellulose acetate material has disadvantages such as poor water vapor barrier, poor ultraviolet shielding performance, and poor free radical scavenging activity (ie, antioxidant activity). When it is applied to packaging, optics, electronics and other fields, poor ultraviolet shielding performance will lead to Poor usability; water vapor passing through the cellulose acetate material will cause deterioration of ...

Claims

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Application Information

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IPC IPC(8): C08L1/12C08K5/09C08K3/34
CPCC08K5/09C08K3/34C08K2201/004C08K2201/003C08L2201/08C08L2201/10C08L1/12
Inventor 邹志明陈奎余劲灵何婷李和平唐群
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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