Method of regulating surface wettability of parylene c by virtue of surface patterning
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A technology of paraxylene and surface pattern, applied in the direction of coating, can solve problems such as degradation, and achieve the effect of improving yield
Active Publication Date: 2015-12-09
CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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[0009] The purpose of the present invention is to overcome the problem in the prior art that when the surface wettability of the PC film is improved in order to enhance the water vapor barrier performance of the PC film surface, the light in the mask light treatment causes the surface of the PC film to degrade, and to provide a surface pattern A method for chemically regulating the surface wettability of PC film
This method can overcome the defects that lead to degradation during the illumination process, so that the PC film can maintain good stability during the surface masking process without degradation problems
Method used
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Embodiment 1
[0049] The PC film was ultrasonically cleaned with acetone and ethanol for 10 minutes, then dried at 50°C for 90 minutes, then pretreated with air plasma at 100V for 10s, then spin-coated with 1wt% PAA aqueous solution at 3000rpm for 30s, and then dried at 50°C for 90 minutes, and then the pore area was 10%. , a circular hole mask with a hole center spacing of 280 μm is placed on the above PC film, and then directly UV / O 3 After treatment for 300s, wash with water for 30 minutes, then dry at 50°C for 90 minutes, and test the surface water droplet contact angle and transparency.
[0050] The structure of the patterned PC film is as figure 2 (top view), image 3 (side view). Under the masking effect of the mask plate with holes on the surface, there are a large number of hydrophilic patterns on the surface of the PC film after light crosslinking (preferably evenly distributed, figure 2 is an example of uniform distribution), these hydrophilic patterns have a significant eff...
Embodiment 2
[0054] The PC membrane was ultrasonically cleaned with acetone and ethanol for 10 minutes, dried at 50°C for 90 minutes, pretreated with air plasma at 100V for 10s, then spin-coated with 1wt% PAA aqueous solution at 3000rpm for 30s, dried at 50°C for 90mins, and then coated with a pore area of 20%. , a circular hole mask with a hole center spacing of 198 μm is placed on the above PC film, and then directly UV / O 3 After treatment for 300s, wash with water for 30 minutes, then dry at 50°C for 90 minutes, and test the surface water droplet contact angle and transparency.
Embodiment 3
[0056] The PC film was ultrasonically cleaned with acetone and ethanol for 10 minutes, dried at 50°C for 90 minutes, pretreated with air plasma at 100V for 10s, then spin-coated with 1wt% PAA aqueous solution at 3000rpm for 30s, dried at 50°C for 90mins, and then the pore area was 30%. , a circular hole mask with a hole center spacing of 162 μm is placed on the above PC film, and then directly UV / O 3 After treatment for 300s, wash with water for 30 minutes, then dry at 50°C for 90 minutes, and test the surface water droplet contact angle and transparency.
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Abstract
The invention discloses a method of regulating the surface wettability of a parylene c (PC) by virtue of surface patterning. The method comprises the following steps: ultrasonically washing the PC, and then drying the PC for standby application; processing the PC by virtue of air plasma for standby application; then smearing a polymer coating rich in polarity groups such as hydroxyl, carboxyl, amino group and the like on the surface of the PC, and drying; placing a patterned mask above the processed PC, and then carrying out a cross-linking reaction under the effect of UV/O3; after the cross-linking is completed, soaking in deionized water to wash out unreacted and ungrafted polymer coating rich in the polarity groups, and then drying to obtain a patterned PC with controllable surface wettability. According to the method of regulating the surface wettability of the PC by virtue of the surface patterning, the wettability is adjustable, a surface water contact angle can be regulated and designed in a range of 5 to 90 degrees, so that the surface wettability of the PC can be precisely designed according to the real requirement of different fields, and the yield of products is increased.
Description
technical field [0001] The invention relates to surface modification of polymer materials, in particular to a method for precisely regulating the surface wettability of polychlorinated p-xylylene film through surface patterning, and belongs to the field of surface wettability regulation. Background technique [0002] Polychlorinated p-xylylene film (PlaryleneC film, referred to as PC film) is considered to be the current film due to its relatively mature film-forming process, low gas and water vapor permeability, excellent dielectric properties, solvent resistance and mechanical properties. One of the most effective anti-moisture, anti-mold, anti-salt spray and high-frequency component protective coating materials, it has a wide range of applications in aerospace, military electronics, microelectronics, semiconductors, biomedical, cultural relics protection and other fields (PurselS, HornMW , Demirel MC, Lakhtakia A. Growth of sculptured polymer submicron wire assemblies by ...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/00C08J7/04C08J7/12
Inventor 何周坤唐昶宇邵虹胡歆梅军刘焕明徐克勤
Owner CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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