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A kind of intelligent thermal insulation coating and its preparation and application

A technology for thermal insulation coatings and thermal insulation coatings, applied in polyamide coatings, epoxy resin coatings, coatings, etc., can solve the problems of perishable fresh food, limited fresh-keeping time, lack of effective control at the end of the cold chain, etc., to achieve Prolonged preservation quality, high latent heat of phase change, and good barrier properties

Active Publication Date: 2022-02-18
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the development of the economy, national consumption habits have changed. More and more people choose to buy fresh food such as fruits, vegetables, and aquatic products online. The freshness and safety of fresh food are its value. However, fresh food is extremely perishable, and the preservation time is very limited. Therefore, it is necessary to adopt a special preservation mode while transporting it to ensure that the whole transportation process must meet the low temperature conditions required for preservation. Therefore, cold chain logistics should be transported and play an increasingly important role in everyday life
[0003] At present, the focus of cold chain logistics is mainly on the front and middle ends, that is, the storage and transportation process from production enterprises to sales, while the end of the cold chain (that is, the process from the store to the hands of consumers) lacks effective control

Method used

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  • A kind of intelligent thermal insulation coating and its preparation and application
  • A kind of intelligent thermal insulation coating and its preparation and application
  • A kind of intelligent thermal insulation coating and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Using expandable graphite with a mesh size of 80 and a purity of 99% as raw material, place the expandable graphite in a vacuum drying oven at 75°C for 12 hours, weigh 0.4 g of fully dried expandable graphite particles, and spread them evenly At the bottom of the 500ml quartz beaker, prevent the expandable graphite particles from sticking to the wall of the quartz beaker. After spreading evenly, put the quartz beaker into the microwave oven to expand the expandable graphite by microwave. The microwave power is 700w, and the microwave expansion time is After 40 seconds, take out the expansion container after the expansion, the expandable graphite expands into worm-like expanded graphite, and cool to room temperature.

[0048] At room temperature, weigh dodecane-oleic acid, dodecane-soybean oil, and dodecane-sunflower oil with a mass ratio of 5:1, 4:1, and 3:1 respectively in a small beaker, and place On a magnetic stirrer, stir and mix with a rotating speed of 400r min-1...

Embodiment 2

[0059] Using expandable graphite with a mesh size of 80 and a purity of 99% as raw material, place the expandable graphite in a vacuum drying oven at 75°C for 12 hours, weigh 0.4 g of fully dried expandable graphite particles, and spread them evenly At the bottom of the 500ml quartz beaker, prevent the expandable graphite particles from sticking to the wall of the quartz beaker. After spreading evenly, put the quartz beaker into the microwave oven to expand the expandable graphite by microwave. The microwave power is 700w, and the microwave expansion time is After 40 seconds, take out the expansion container after the expansion, the expandable graphite expands into worm-like expanded graphite, and cool to room temperature.

[0060] Using dodecane, oleic acid, soybean oil, and sunflower oil as a single phase change material, weigh a certain mass ratio of dodecane-oleic acid, dodecane-soybean oil, and dodecane-sunflower seed at room temperature Put the oil in a glass bottle and ...

Embodiment 3

[0071] Take 1 part (g) of polyamide resin, first dilute the polyamide resin with 0.25 (g) part of absolute ethanol, stir evenly, then add 1 part (g) of epoxy resin, add 0.45 part (g) of compound after mixing evenly Phase change materials (different composite phase change materials prepared in Example 3), and finally put the uniformly stirred coating into a vacuum box to remove air bubbles, and correspondingly prepare 9 groups of different intelligent thermal insulation coatings.

[0072] The prepared coating was evenly brushed on the inner wall of the foam box, and cured at room temperature for 24 hours. After the coating was completely cured, the dodecane-oleic acid insulation coating (3 groups), the dodecane-soybean oil insulation coating, and the dodecane-soybean oil insulation coating were prepared respectively. Coating (3 groups), dodecane-sunflower oil thermal insulation coating (3 groups), as shown in Table 7.

[0073] Table 7

[0074]

[0075] Place the incubators ...

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Abstract

The application discloses an intelligent thermal insulation coating and its preparation and application. The expanded graphite is mixed with a binary phase change material, and the binary phase change material is adsorbed on the expanded graphite to obtain a composite phase change material; the binary phase change material is Dodecane-oleic acid binary phase change material, dodecane-soybean oil binary phase change material or dodecane-sunflower oil binary phase change material; the composite phase change material obtained with polyamide resin and epoxy The resins are mixed to obtain the thermal insulation coating; the thermal insulation coating is brushed on the inner wall of the container, and the intelligent thermal insulation coating is obtained after curing. The invention studies the phase change material in the refrigeration temperature range, and prepares the insulation material suitable for the fresh food refrigeration transportation logistics field. The material used in the preparation method is green, environmentally friendly, reusable, highly efficient and energy-saving, and requires simple equipment and simple process.

Description

technical field [0001] The invention relates to the technical field of low temperature control, in particular to an intelligent thermal insulation coating and its preparation and application. Background technique [0002] In recent years, with the development of the economy, national consumption habits have changed. More and more people choose to buy fresh food such as fruits, vegetables, and aquatic products online. The freshness and safety of fresh food are its value. However, fresh food is extremely perishable, and the preservation time is very limited. Therefore, it is necessary to adopt a special preservation mode while transporting it to ensure that the whole transportation process must meet the low temperature conditions required for preservation. Therefore, cold chain logistics should be transported and play an increasingly important role in our daily lives. [0003] At present, the focus of cold chain logistics is mainly on the front and middle ends, that is, the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D177/00C09D163/00C09D7/63C09D7/65C09K5/06
CPCC09D177/00C09D163/00C09D7/63C09D7/65C09K5/063C08L2205/03Y02P20/10
Inventor 陈青程红梅王彦波邢明尧
Owner ZHEJIANG GONGSHANG UNIVERSITY