Preparation method of silicone rubber-based superhydrophobic coating with noctilucent function

A technology of super-hydrophobic coating and silicone rubber, applied in the direction of coating, etc., can solve the problem that super-hydrophobic coating does not have luminous properties

Active Publication Date: 2016-07-20
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the superhydrophobic coatings developed so far have luminous properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Dissolve 25g of silicone rubber, 1g of curing agent and 0.25g of accelerator in 100mL of n-hexane to obtain a transparent solution, and pour the solution on a glass plate to form a film; Mix in a mortar for 1 hour until the color is uniform to obtain a mixed powder; use an 80-mesh stainless steel sampling sieve to evenly sprinkle 10g of the mixed powder on the surface of the silicone rubber film, and let it stand for curing for 24 hours; finally, wash the excess powder on the surface with a large amount of absolute ethanol That is, a superhydrophobic coating with luminous function is obtained. Using a contact angle tester (Germany KRUSS company, DSA100), the contact angle of the coating surface is 158.3°, and the rolling angle is 4.2°. Irradiate the sample with sunlight for 5 minutes, and the sample can emit light for 4.9 hours in the dark; for 10 minutes, it can emit light for 8.9 hours in the dark; for 20 minutes, it can emit light for 12.1 hours.

Embodiment 2

[0012] Dissolve 25g of silicone rubber, 1g of curing agent and 0.25g of accelerator in 100mL of n-hexane to obtain a transparent solution, and pour the solution on a glass plate to form a film; Mix in a mortar for 1 hour until the color is uniform to obtain a mixed powder; use an 80-mesh stainless steel sampling sieve to evenly sprinkle 20g of the mixed powder on the surface of the silicone rubber film, and let it stand for 24 hours to cure; finally, wash the excess powder on the surface with a large amount of absolute ethanol That is, a superhydrophobic coating with luminous function is obtained. Using a contact angle tester (Germany KRUSS company, DSA100), the contact angle of the coating surface is 162.5°, and the rolling angle is 3.9°. Irradiate the sample with sunlight for 5 minutes, and the sample can emit light for 4.9 hours in the dark; for 10 minutes, it can emit light for 8.9 hours in the dark; for 20 minutes, it can emit light for 11.7 hours.

Embodiment 3

[0014] Dissolve 25g of silicone rubber, 1g of curing agent and 0.25g of accelerator in 100mL of n-hexane to obtain a transparent solution, and pour the solution on a glass plate to form a film; Mix in a mortar for 1 hour until the color is uniform to obtain a mixed powder; use an 80-mesh stainless steel sampling sieve to evenly sprinkle 30g of the mixed powder on the surface of the silicone rubber film, and let it stand for curing for 24 hours; finally, wash the excess powder on the surface with a large amount of absolute ethanol That is, a superhydrophobic coating with luminous function is obtained. Using a contact angle tester (Germany KRUSS company, DSA100), the contact angle of the coating surface is 164.5°, and the rolling angle is 3.3°. Irradiate the sample with sunlight for 5 minutes, and the sample can emit light for 4.8 hours in the dark; for 10 minutes, it can emit light for 9.1 hours in the dark; for 20 minutes, it can emit light for 12.2 hours.

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Abstract

The invention relates to a preparation method of a silicone rubber-based superhydrophobic coating with a noctilucent function. The preparation method comprises the following steps: dissolving 25 g of silicone rubber, 1 g of a curing agent and 0.25 g of an accelerant in 100 ml of hexane so as to obtain a clear solution; pouring the solution on a glass panel, performing natural streaming and performing filming; at the same time, mixing noctilucent powder with polytetrafluoroethylene powder which are the same in mass in an agate mortar for 1 h until the color is uniform, so that mixed powder is obtained; uniformly spreading 10-30 g of the mixed powder to a silicone rubber membrane surface by using a 80-mesh stainless steel sampling sieve, and performing standing and solidification for 24 h; finally, cleaning the surplus powder on a surface layer with a great deal of dehydrated alcohol so as to obtain the superhydrophobic coating with the noctilucent function. The silicone rubber-based superhydrophobic coating with the noctilucent function, disclosed by the invention, not only has the functions of self-cleaning and preventing pollution, but also can achieve the effects of attracting attention, decoration and the like at night, has the efficacy of energy conservation, and does not need electric energy.

Description

technical field [0001] The invention relates to a preparation method of a silicone rubber-based super-hydrophobic coating, in particular to a preparation method of a silicone rubber-based super-hydrophobic coating with luminous function. Background technique [0002] The superhydrophobic coating of silicone rubber material has self-cleaning properties. There have been many reports on superhydrophobic silicone rubber coatings. For example, An Zhenlian and others performed high-temperature fluorination treatment on silicone rubber products to obtain highly hydrophobic or even superhydrophobic surfaces (a method to significantly improve the surface hydrophobicity of silicone rubber, Chinese invention patent, publication number: CN104356418A); Shen Lie et al. People burn silicone rubber into powder, and then hot press it on the surface of polymer materials to obtain super-hydrophobic coating (a preparation method of super-hydrophobic wear-resistant composite coating based on si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04
CPCC08J7/0427C08J2383/04C08J2427/18
Inventor 田昊王法军欧军飞李文
Owner NANCHANG HANGKONG UNIVERSITY
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