Preparation method of polysiloxane superhydrophobic coating

A super-hydrophobic coating, polysiloxane technology, applied in coatings, anti-fouling/underwater coatings, anti-corrosion coatings, etc., to achieve the effects of improving preparation efficiency, short lighting time, and large market prospects

Active Publication Date: 2021-08-17
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there are few reports on the superhydrophobic coating based on homogeneous polysiloxane, and expensive etching steps are often required to obtain the surface roughness of the coating during the preparation process, so that the coating has superhydrophobic properties.

Method used

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  • Preparation method of polysiloxane superhydrophobic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0019] Mix 0.01 g of iodonium salt bis(dodecylphenyl) iodonium hexafluorophosphate (UV-1242) with 1 g of octyltrichlorosilane, stir evenly on a magnetic stirrer, and spread evenly in ethanol In order to obtain a coating on the ultrasonically treated silicon wafer, place the coated silicon wafer in a closed device equipped with an ultraviolet lamp; weigh acetone and water according to the molar ratio of acetone: water = 1:9, and put the two The acetone / water solution is mixed to obtain the acetone / water solution, and the acetone / water solution is formed into a steam effect under the action of a bubbling machine. Under the condition of a bubbling flow rate of 5mL / min, the catheter leads to the coating surface on the silicon wafer in the closed device, and the ultraviolet light is adjusted. Illuminance up to 10mw / cm 2 , cured by light for 60 minutes to obtain the organopolysilane superhydrophobic coating, the water contact angle test results of the organopolysilane superhydrophob...

Embodiment approach 2

[0021] Mix 0.02 g of iodonium salt bis(dodecylphenyl) iodonium hexafluorophosphate (UV-1242) with 1 g of octadecyltrichlorosilane, stir evenly on a magnetic stirrer, and spread evenly on the Get a coating on a silicon wafer that has been ultrasonically treated in ethanol, place the coated silicon wafer in a closed device equipped with an ultraviolet lamp; weigh acetone and water according to the molar ratio of acetone:water=2:8, and Mix the two to obtain acetone / water solution, and use the acetone / water solution to form a steam effect under the action of a bubbling machine. Under the condition of a bubbling flow rate of 10mL / min, the catheter leads to the coating surface on the silicon wafer in the closed device, and adjusts UV light intensity up to 10mw / cm 2 , cured by light for 50min to obtain the organopolysilane superhydrophobic coating, the water contact angle test results of the organopolysilane superhydrophobic coating are shown in Table 1, and the surface morphology is...

Embodiment approach 3

[0023] Mix 0.02g of bis[4-bis(4-(2-hydroxyethyl)phenyl)sulfonium]-phenylsulfide bishexafluoroantimonate (SP-170) with 1g of hexadecyltrichlorosilane , stir evenly on a magnetic stirrer, and evenly smear the coating on the silicon wafer that has been ultrasonically treated in ethanol in the early stage, and place the coated silicon wafer in a closed device equipped with an ultraviolet lamp; according to the molar ratio Acetone: water = 4:6 Weigh acetone and water, and mix the two to get acetone / water solution, the acetone / water solution forms a steam effect under the action of a bubbling machine, and the bubbling flow rate is 20mL / min, through the catheter Lead to the coating surface on the silicon wafer in the airtight device, adjust the intensity of the ultraviolet light to 50mw / cm 2 , and cured by light for 40 minutes to obtain an organopolysilane superhydrophobic coating. The water contact angle test results of the organopolysilane superhydrophobic coating are shown in Tabl...

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Abstract

The invention belongs to the technical field of polymer materials, and discloses a method for preparing a polysiloxane superhydrophobic coating. Under normal temperature, after stirring, dissolving, and mixing an organosilane precursor and a cationic photoinitiator, the coating is uniformly applied on a substrate. ; be placed in the airtight device that ultraviolet lamp is housed, pass into the aqueous solution vapor environment of organic solvent light curing again, obtain organopolysilane superhydrophobic coating; The molecular formula of described organosilane precursor is Cl 3 SiC n h 2n+1 , wherein n is 8, 10, 12, 16 or 18. Compared with the existing method for preparing the super-hydrophobic coating, the invention has the advantages of simple operation, fast polymerization speed, good coating performance and broad market prospect.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for preparing a polysiloxane superhydrophobic coating. Background technique [0002] Superhydrophobic coatings have attracted widespread attention because of their special surface properties, and have broad application prospects in the fields of self-cleaning, anti-corrosion, and drag reduction. [0003] Polysiloxane is widely used in various fields of the national economy because of its good weather resistance, thermal stability and flame resistance. But so far, there are few reports on superhydrophobic coatings based on homogeneous polysiloxane, and expensive etching steps are often required in the preparation process to obtain the surface roughness of the coating, so that the coating has superhydrophobic properties. Contents of the invention [0004] Purpose of the invention: Aiming at the problems existing in the prior art, the present invention provides...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D5/08C09D5/16
CPCC08G77/04C09D4/00C09D5/08C09D5/1675C09D5/18C09D183/04
Inventor 倪伶俐刘永涛芮国锋蔡鹏郑菲张世忠
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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