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Preparation method of heat dissipation film for sweeper

A heat-dissipating film and sweeper technology, which is applied in the directions of heat exchange materials, chemical instruments and methods, etc., can solve the problems of low transparency, limitation, and high cost of the film, so as to enhance the ability to reflect solar radiation, improve the dispersion effect, and the preparation method. simple effect

Inactive Publication Date: 2021-06-01
NANTONG LVNENG ENVIRONMENTAL PROTECTION EQUIPCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to some defects in existing products, its development is limited, such as poor film stability, low film transparency, high cost, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a heat dissipation film for sweeping vehicles, characterized in that the heat dissipation film for sweeping vehicles is prepared from 0.2 parts of cellulose acetate, 3.2 parts of acetone, 80 parts of water, other additives and 15 parts of nanometer microspheres.

[0024] S1 Weigh a certain amount of water and acetone to mix, the volume ratio of water: acetone is 1:25 to form a mixed solvent;

[0025] S2 Dissolve a certain amount of acid cellulose in a mixed solvent of water and acetone to form a transparent precursor solution;

[0026] S3 uses nano-microspheres of uniform size, and the nano-microsphere particles obtained by centrifugation are washed with deionized water, and then vacuum-dried at 80°C;

[0027] S4 disperses the pre-dried nano-microspheres in the precursor solution, and stirs with a magnetic stirrer at 500 r / min for 4 hours to form a milky white suspension;

[0028] S5 Put the milky white suspension into the casting machine for nat...

Embodiment 2

[0030] A method for preparing a heat dissipation film for sweeping vehicles, characterized in that the heat dissipation film for sweeping vehicles is prepared from 0.4 parts of cellulose acetate, 4.8 parts of acetone, 120 parts of water, other additives and 18 parts of nanometer microspheres.

[0031] S1 Weigh a certain amount of water and acetone to mix, the volume ratio of water: acetone is 1:25 to form a mixed solvent;

[0032] S2 Dissolve a certain amount of acid cellulose in a mixed solvent of water and acetone to form a transparent precursor solution;

[0033] S3 uses nano-microspheres of uniform size, and the nano-microsphere particles obtained by centrifugation are washed with deionized water, and then vacuum-dried at 80°C;

[0034] S4 disperses the pre-dried nano-microspheres in the precursor solution, and uses a magnetic stirrer to stir at 600 r / min for 6 hours to form a milky white suspension;

[0035] S5 Put the milky white suspension into the casting machine for ...

Embodiment 3

[0037] A method for preparing a heat dissipation film for sweeping vehicles, characterized in that the heat dissipation film for sweeping vehicles is prepared from 0.8 parts of cellulose acetate, 6 parts of acetone, 150 parts of water, other additives and 25 parts of nano-microspheres.

[0038] S1 Weigh a certain amount of water and acetone to mix, the volume ratio of water: acetone is 1:25 to form a mixed solvent;

[0039] S2 Dissolve a certain amount of acid cellulose in a mixed solvent of water and acetone to form a transparent precursor solution;

[0040] S3 uses nano-microspheres of uniform size, and the nano-microsphere particles obtained by centrifugation are washed with deionized water, and then vacuum-dried at 80°C;

[0041] S4 Disperse the pre-dried nano-microspheres in the precursor solution, and stir with a magnetic stirrer at 800 r / min for 8 hours to form a milky white suspension;

[0042] S5 Put the milky white suspension into the casting machine for natural vol...

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Abstract

The invention discloses a preparation method of a heat dissipation film for a sweeper, the heat dissipation film for the sweeper is prepared from 0.2-0.8 part of cellulose acetate, 2-10 parts of acetone, 40-150 parts of water, other auxiliaries and 15-25 parts of nanoparticles, the preparation method comprises the following steps: weighing a certain amount of water and acetone, and mixing to form a mixed solvent; dissolving a certain amount of acid cellulose in the mixed solvent of water and acetone to form a transparent precursor solution; carrying out centrifugal separation on nano-microspheres with uniform sizes to obtain nano-microsphere particles, washing the nano-microsphere particles with deionized water, and then carrying out vacuum drying; dispersing the pre-dried nano-microspheres in the precursor solution, and stirring by adopting a magnetic stirrer to form a milk white suspension; and putting the milk white suspension into a casting machine for natural volatilization, thereby obtaining the large-area heat dissipation film for the sweeper. The heat dissipation film forms a three-dimensional structure system in the material, so that not only can the dispersion effect of the nano microbeads be improved, but also the solar radiation reflection capability of the nano microbeads can be enhanced, and the purpose of cooling the interior of the sweeper is achieved.

Description

technical field [0001] The invention belongs to the field of heat dissipation and cooling of sweeping vehicles, and in particular relates to a preparation method of a heat dissipation film for sweeping vehicles. Background technique [0002] As an important equipment for cleaning up the urban environment, the sweeper needs to clean up the garbage no matter the scorching sun. Cooling film is a new type of functional material, which can effectively prevent heat conduction and reduce the temperature of the surface and internal environment. If it is applied to sweeping vehicles, it can improve the working environment and reduce the external temperature of the vehicle. At present, there are many researches on various cooling films at home and abroad, but there is no reference basis for the influence of various pigments and fillers on the heat dissipation and cooling effect. Therefore, the present invention studies the influence of the three-dimensional structure on the cooling ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/28C09K5/14
CPCC04B26/285C09K5/14C04B2111/00008C04B24/008C04B22/002C04B14/06C04B14/324C04B14/305
Inventor 章智慧章月娇
Owner NANTONG LVNENG ENVIRONMENTAL PROTECTION EQUIPCO