Titanium dioxide/fluorosiloxane super-hydrophobic healing coating and preparation method thereof
A technology of fluorosiloxane and titanium dioxide, which is applied in the field of titanium dioxide/fluorosiloxane superhydrophobic healable coating and its preparation, which can solve the problems of weakening and disappearing coating protection effect
Active Publication Date: 2021-06-11
TIANJIN UNIV
View PDF4 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In recent years, superhydrophobic coatings have been favored for their excellent corrosion resistance, but mechanical or chemical effects will weaken or even eliminate the protective effect of coatings.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0028] Step 1: Powder Modification
[0029] First add 15ml of absolute ethanol and 10ml of deionized water into the beaker, then add 0.4g of stearic acid and 2.5g of nano-TiO 2 The powder was magnetically stirred at a constant temperature (25°C) for 3 hours, then placed in an oven (110°C) and kept warm for 3 hours to obtain a dry powder, which was ground and passed through a 800-mesh sieve, and bottled for later use.
[0030] Step 2: Sol preparation
[0031] Add 50ml of absolute ethanol, 2ml of deionized water and 2ml of ammonia water into the beaker, first go through constant temperature (25°C) magnetic stirring for 30min, then add 0.5ml of heptadecafluorodecyltrimethoxysilane, and continue stirring for 30min to obtain blue- White transparent sol, bottled for use. Among them, absolute ethanol is used as solvent, ammonia water is used as silane hydrolysis catalyst, and water is used as accelerator. The hydrolysis schematic diagram is as follows:
[0032]
[0033] R=CF 3...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a titanium dioxide / fluorosiloxane super-hydrophobic healing coating and a preparation method thereof. The preparation method comprises the steps of firstly, modifying nano titanium dioxide with stearic acid, and preparing sol obtained after heptadecafluorodecyl trimethoxy silane is hydrolyzed, preparing coating sol from sol obtained by hydrolyzing the modified nano titanium dioxide and heptadecafluorodecyl trimethoxysilane, brushing the surface of a sample with the coating sol, and heating and drying to obtain the titanium dioxide / fluorosiloxane super-hydrophobic healable coating. The construction of a coarse structure and the modification of a low-surface-energy substance are simultaneously realized through a one-step method, and the super-hydrophobic coating can be prepared on various hydrophilic surfaces, so that the coating technology can be widely applied to practice; besides, the prepared super-hydrophobic coating has healing capacity, when the super-hydrophobic coating is chemically damaged, experimental materials do not need to be added, and the super-hydrophobic coating can be endowed with a certain degree of super-hydrophobic capacity again only through heating healing treatment.
Description
technical field [0001] The invention belongs to the field of coating protection, in particular to a titanium dioxide / fluorosiloxane superhydrophobic healable coating and a preparation method thereof. Background technique [0002] The huge economic loss caused by the corrosion failure of materials has aroused widespread concern in the society. Coating protection is an effective means to prolong the service life of materials. In recent years, superhydrophobic coatings have been favored due to their excellent corrosion resistance, but mechanical or chemical effects will weaken or even eliminate the protective effect of coatings. The key factors for constructing superhydrophobic surfaces include constructing surface roughness with complex dimensions and reducing surface energy. Therefore, the main ideas for the synthesis of superhydrophobic materials in recent years are as follows: one is the selection of hydrophobic materials and the rough structure of the surface; Modificati...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C09D7/62C08G77/24
CPCC09D4/00C09D183/08C09D7/62C08G77/24
Inventor 高志明谭清朝夏大海胡文彬吴忠修妍
Owner TIANJIN UNIV