Aluminum alloy/graphene-carbon fiber thin film composite quick-frozen plate and preparation method thereof

A technology of carbon fiber and graphene, which is applied in the field of aluminum alloy/graphene-carbon fiber film composite quick-freezing plate and its preparation, can solve the problems of sanitation and health discount, time is difficult to control, reduce softness and freshness, etc., and achieve high thermal conductivity and cooling performance, and the effect of equalizing temperature

Inactive Publication Date: 2016-10-12
JIANGSU YUEDA NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The natural thawing method at room temperature needs to wait for several hours to complete. Meat and fresh fish exposed to the air for a long time are prone to double the number of bacteria, and 1 million bacteria can reproduce in 5 hours, which greatly reduces hygiene and health; soaking water thawing method , the waiting time is also longer, and the blood of the meat is mixed with ice water, which reduces the softness and freshness of the meat; although the microwave thawing method is fast, it is difficult to control the time, which will easily cause the outside to be cooked and the inside to be hard, destroying the texture of the food. Taste and nutritional content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First add flake graphite with a particle size of 100 mesh into the reaction kettle, add a strong protonic acid with a concentration of 17mol / L under the condition of an ice-water bath, control the temperature at 20°C, add a strong oxidant to oxidize, and obtain a graphene oxide solution after 3 hours of ultrasonic stripping Add the chopped carbon fibers with a length of 6mm in the graphene oxide solution, and after mixing evenly with 2000rpm in the solid-liquid dispersion equipment, suction filtration forms the graphene oxide-carbon fiber film, and dries for subsequent use; then the graphene oxide- After the carbon fiber film is carbonized at 4h at 900°C and graphitized at 5h at 2000°C, a graphene-carbon fiber film is prepared; then a graphite high thermal conductivity double-sided tape with a graphite particle diameter of 3 microns is attached to both sides of the graphene-carbon fiber film , and then the 7075 aluminum alloy with a thickness of 4mm and the 5A02 aluminum...

Embodiment 2

[0020] First add flake graphite with a particle size of 300 mesh into the reaction kettle, add a strong protonic acid with a concentration of 18mol / L in an ice-water bath, control the temperature at 25°C, add a strong oxidant to oxidize, and obtain a graphene oxide solution after 4 hours of ultrasonic stripping Add the chopped carbon fibers with a length of 10mm in the graphene oxide solution, and after mixing evenly with 2500rpm in the solid-liquid dispersion equipment, suction filtration forms the graphene oxide-carbon fiber film, and dries for subsequent use; then the graphene oxide- After the carbon fiber film is carbonized at 1200°C for 8h and graphitized at 2100°C for 7h, a graphene-carbon fiber film is prepared; then a graphite high thermal conductivity double-sided tape with a graphite particle diameter of 5 microns is attached to both sides of the graphene-carbon fiber film , and then the 7075 aluminum alloy with a thickness of 5mm and the 5A06 aluminum alloy with a th...

Embodiment 3

[0022] First add flake graphite with a particle size of 500 mesh into the reaction kettle, add a strong protonic acid with a concentration of 19mol / L in an ice-water bath, control the temperature at 30°C, add a strong oxidant to oxidize, and obtain a graphene oxide solution after 6 hours of ultrasonic stripping Add the chopped carbon fibers with a length of 20mm in the graphene oxide solution, and after mixing uniformly with 3000rpm in the solid-liquid dispersion equipment, suction filtration forms the graphene oxide-carbon fiber film, and dries for subsequent use; then the graphene oxide- After the carbon fiber film is carbonized at 1400°C for 12h and graphitized at 2300°C for 10h, a graphene-carbon fiber film is prepared; then a graphite high thermal conductivity double-sided tape with a graphite particle diameter of 6 microns is attached to both sides of the graphene-carbon fiber film , the 7A09 aluminum alloy with a thickness of 6mm and the 5A06 aluminum alloy with a thickn...

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Abstract

The invention discloses an aluminum alloy/graphene-carbon fiber film composite quick-freezing plate suitable for refrigerators and a preparation method thereof. The composite quick-freezing plate has a three-layer structure, which is composed of two upper and lower layers of aluminum alloy and three layers of graphene-carbon fiber film in the middle. Firstly, graphene oxide-carbon fiber film is made of flake graphite and carbon fiber, and graphene-carbon fiber film is made after high-temperature carbonization and graphitization; Attached with aluminum alloy, and finally compounded and pressed. The invention has a high freezing rate, realizes the effect of fast and uniform freezing of food, has simple preparation process, low cost, is easy to popularize, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a high thermal conductivity material used in conjunction with a refrigerator, in particular to an aluminum alloy / graphene-carbon fiber film composite quick-freezing plate for the refrigerator and a preparation method thereof. Background technique [0002] As a household appliance for food preservation, refrigerators have been widely popularized. With the improvement of living standards, quick-freezing preservation has become a method of food preservation to maximize the original color, aroma, taste, appearance, freshness and nutritional value of food. Refrigerator interior materials are generally poor thermal conductors such as glass and plastic, and have poor heat exchange performance. During the freezing process of food, it mainly relies on the air to transfer the cooling capacity of the compressor for heat exchange. The freezing time is long, and the effect of quick freezing is poor. Refrigeration equipment consumes a lot of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/04B32B15/20B32B9/00B32B9/04B32B37/15
CPCB32B5/02B32B9/007B32B9/041B32B15/04B32B15/20B32B37/15B32B2250/03B32B2250/40B32B2260/021B32B2262/106B32B2307/302B32B2509/10
Inventor 赵大伟成文俊周春华
Owner JIANGSU YUEDA NEW MATERIALS TECH
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