CN104497870A - Preparation method of vinyltrimethoxysilane/zinc oxide superhydrophobic composite coating - Google Patents
Preparation method of vinyltrimethoxysilane/zinc oxide superhydrophobic composite coating Download PDFInfo
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- CN104497870A CN104497870A CN201410766231.3A CN201410766231A CN104497870A CN 104497870 A CN104497870 A CN 104497870A CN 201410766231 A CN201410766231 A CN 201410766231A CN 104497870 A CN104497870 A CN 104497870A
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Abstract
The invention provides a preparation method of a vinyltrimethoxysilane (VTES)/zinc oxide superhydrophobic composite coating, which comprises the following steps: (1) modifying zinc oxide with stearic acid; (2) adding proper amounts of deionized water, catalyst and dispersing agent into a container, stirring, adding 10 parts by weight of the modified ZnO, and continuing stirring for 25-30 minutes; slowly adding 0.8 part by weight of VTES emulsion, stirring, and adding a curing agent to obtain a VTES/ZnO composite sol; (3) immersing a steel base with a clean surface into the VTES/ZnO composite sol, and carrying out dip coating to obtain a composite film with a certain thickness; and finally, drying the steel base subjected to dip coating at room temperature, and baking until the coating is sufficiently crosslinked and cured, thereby obtaining the VTES/ZnO superhydrophobic composite coating. The contact angle between the superhydrophobic composite coating and water is up to 153 degrees, and the roll angle is 6 degrees.
Description
Technical field
The present invention relates to the preparation method of vinyltrimethoxy silane/zinc oxide super-hydrophobic compound coating.
Background technology
Body surface has automatically cleaning and anti-corrosion function is nanosecond science and technology age study problem the most widely, it is the target that people pursue that process differing materials surface makes it have ultra-hydrophobicity, as: people the accessory such as shoes, clothes worn do not get wet, the antifogging self-cleaning of kitchen tile and bathroom glass, the hydrophobic preservative property of building external paint and water pipe inwall.
Super-hydrophobic composite material surface, because have excellent hydrophobic ability and good antiseptic property, has a wide range of applications in industry and life.In recent years, find that a kind of preparation technology is simple, with low cost, method environmental protection, stable performance and the antifouling anticorrosion super-hydrophobic coat had both be current developing direction.
Summary of the invention
In order to solve problems of the prior art, the invention provides the preparation method of vinyltrimethoxy silane/zinc oxide super-hydrophobic compound coating.
The invention provides the preparation method of vinyltrimethoxy silane (VTES)/zinc oxide super-hydrophobic compound coating, step is as follows:
(1) stearic acid modified zinc oxide: 10 weight part ZnO are dissolved in ethanol and deionized water for stirring is even, then the stearic acid of 0.7-0.9 weight part is added ultrasonic dissolution in ethanolic soln, finally the stearic acid of dissolving and ZnO solution are made Homogeneous phase mixing system, 40 DEG C, pH=5 condition lower magnetic force stirs after 2h, dry, grind for subsequent use;
(2) appropriate deionized water, catalyzer, dispersion agent being added in container, at ultrasonic lower rapid stirring 5-10min, then adding wherein through 10 modified weight part ZnO, continuing to stir 25-30min; Slowly add the VTES emulsion of 0.8 weight part more wherein, and 42 DEG C, pH=4 condition lower magnetic force stirs after 35-40min and adds solidifying agent again, thus obtain VTES/ZnO complex sol;
(3) steel matrix clean for surface treatment is immersed in VTES/ZnO complex sol, then carries out Best-Effort request plated film, obtain certain thickness laminated film; Finally, after steel matrix complete for Best-Effort request at room temperature drying, 140 DEG C of bakings, until the full cross-linked solidification of coating, obtain VTES/ZnO super hydrophobic composite coating.
Preferably, described catalyzer is ammoniacal liquor.
Preferably, described dispersion agent is sodium laurylsulfonate.
Preferably, described solidifying agent is γ-aminopropyl triethoxysilane.
The stearic acid of the present invention's low surface energy carries out modification to ZnO particle surface, and best modified condition is: stearic acid content is 8%, temperature of reaction is 40 DEG C, pH=5, and the hydrophobicity of modified ZnO particle is significantly improved.When coating thermal treatment temp is 140 DEG C, coating reaches best hydrophobic conditions.Super hydrophobic composite coating of the present invention and water droplet contact angle are 153 °, roll angle 6 °, and water-intake rate is 6.2%.
Embodiment
Following embodiment is convenient to understand the present invention better, but does not limit the present invention.Experimental technique in following embodiment, if no special instructions, is ordinary method.
embodiment 1
The preparation method of vinyltrimethoxy silane of the present invention/zinc oxide super-hydrophobic compound coating is as follows:
(1) stearic acid modified zinc oxide: 10g ZnO is dissolved in 8 mL ethanol and a certain amount of deionized water for stirring even, then 0.8g stearic acid is added ultrasonic dissolution in ethanolic soln, finally the stearic acid of dissolving and ZnO solution are made Homogeneous phase mixing system, 40 DEG C, pH=5 condition lower magnetic force stirs after 2h, dry at 120 DEG C, grind for subsequent use;
(2) appropriate deionized water, catalyzer (ammoniacal liquor), dispersion agent (sodium laurylsulfonate) are added in container, at ultrasonic lower rapid stirring 5-10min, making it to be uniformly dispersed, then adding wherein through modified 10g ZnO, continuing to stir 25-30min.Slowly add the VTES emulsion of 0.8g more wherein, and 42 DEG C, pH=4 condition lower magnetic force stirs after 35-40min and adds solidifying agent (γ-aminopropyl triethoxysilane) again, thus obtain VTES/ZnO complex sol;
(3) steel matrix clean for surface treatment is immersed in VTES/ZnO complex sol, then carries out Best-Effort request plated film, the uniform film of one deck will be formed in steel matrix, obtain certain thickness laminated film for several times through repetitive operation.Finally, after steel matrix complete for Best-Effort request at room temperature dry 20 ~ 30 min, 140 DEG C of bakings, until the full cross-linked solidification of coating, obtain VTES/ZnO super hydrophobic composite coating.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the preparation method of vinyltrimethoxy silane/zinc oxide super-hydrophobic compound coating, is characterized in that: step is as follows:
(1) stearic acid modified zinc oxide: 10 weight part ZnO are dissolved in ethanol and deionized water for stirring is even, then the stearic acid of 0.7-0.9 weight part is added ultrasonic dissolution in ethanolic soln, finally the stearic acid of dissolving and ZnO solution are made Homogeneous phase mixing system, 40 DEG C, pH=5 condition lower magnetic force stirs after 2h, dry, grind for subsequent use;
(2) appropriate deionized water, catalyzer, dispersion agent being added in container, at ultrasonic lower rapid stirring 5-10min, then adding wherein through 10 modified weight part ZnO, continuing to stir 25-30min; Slowly add the VTES emulsion of 0.8 weight part more wherein, and 42 DEG C, pH=4 condition lower magnetic force stirs after 35-40min and adds solidifying agent again, thus obtain VTES/ZnO complex sol;
(3) steel matrix clean for surface treatment is immersed in VTES/ZnO complex sol, then carries out Best-Effort request plated film, obtain certain thickness laminated film; Finally, after steel matrix complete for Best-Effort request at room temperature drying, 140 DEG C of bakings, until the full cross-linked solidification of coating, obtain VTES/ZnO super hydrophobic composite coating.
2. the preparation method of vinyltrimethoxy silane according to claim 1/zinc oxide super-hydrophobic compound coating, is characterized in that: described catalyzer is ammoniacal liquor.
3. the preparation method of vinyltrimethoxy silane according to claim 1/zinc oxide super-hydrophobic compound coating, is characterized in that: described dispersion agent is sodium laurylsulfonate.
4. the preparation method of vinyltrimethoxy silane according to claim 1/zinc oxide super-hydrophobic compound coating, is characterized in that: described solidifying agent is γ-aminopropyl triethoxysilane.
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| CN105296993A (en) * | 2015-10-28 | 2016-02-03 | 天长市润达金属防锈助剂有限公司 | Stripping-resisting aluminum alloy corrosion resisting lifting sol and preparation method thereof |
| CN105296985A (en) * | 2015-10-28 | 2016-02-03 | 天长市润达金属防锈助剂有限公司 | Corrosion-preventive lifting wax sol for aluminum alloy and preparation method thereof |
| CN105296995A (en) * | 2015-10-28 | 2016-02-03 | 天长市润达金属防锈助剂有限公司 | Long-acting aluminum alloy anti-corrosion lifting sol and preparation method thereof |
| CN105296992A (en) * | 2015-10-28 | 2016-02-03 | 天长市润达金属防锈助剂有限公司 | Micro-emulsified aluminum alloy anticorrosive pulling sol and preparation method thereof |
| CN105419626A (en) * | 2015-10-28 | 2016-03-23 | 天长市润达金属防锈助剂有限公司 | Macromolecule aluminum alloy anti-corrosion Czochralski collosol and preparation method thereof |
| CN108743237A (en) * | 2018-07-05 | 2018-11-06 | 南通市中医院 | A kind of Neurology resumes training device with lower limb |
| CN109439193A (en) * | 2018-11-02 | 2019-03-08 | 山西大学 | A kind of solid waste based super hydrophobic coating and its coating process |
| CN109676722A (en) * | 2019-01-17 | 2019-04-26 | 中南林业科技大学 | The preparation method of super-hydrophobic antisepsis timber |
| CN109777018A (en) * | 2019-02-26 | 2019-05-21 | 中认英泰检测技术有限公司 | A kind of preparation method of improved silica-polyacrylate hydrophobic film |
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| CN105296992A (en) * | 2015-10-28 | 2016-02-03 | 天长市润达金属防锈助剂有限公司 | Micro-emulsified aluminum alloy anticorrosive pulling sol and preparation method thereof |
| CN105419626A (en) * | 2015-10-28 | 2016-03-23 | 天长市润达金属防锈助剂有限公司 | Macromolecule aluminum alloy anti-corrosion Czochralski collosol and preparation method thereof |
| CN108743237A (en) * | 2018-07-05 | 2018-11-06 | 南通市中医院 | A kind of Neurology resumes training device with lower limb |
| CN108743237B (en) * | 2018-07-05 | 2024-04-12 | 南通市中医院 | Lower limb recovery training device for neurology department |
| CN109439193A (en) * | 2018-11-02 | 2019-03-08 | 山西大学 | A kind of solid waste based super hydrophobic coating and its coating process |
| CN109439193B (en) * | 2018-11-02 | 2020-10-23 | 山西大学 | Solid waste based super-hydrophobic coating and coating method thereof |
| CN109676722A (en) * | 2019-01-17 | 2019-04-26 | 中南林业科技大学 | The preparation method of super-hydrophobic antisepsis timber |
| CN109777018A (en) * | 2019-02-26 | 2019-05-21 | 中认英泰检测技术有限公司 | A kind of preparation method of improved silica-polyacrylate hydrophobic film |
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