CN104087162A - Preparation of multi-scale micro-nano particles enhanced silicone rubber coating, and gradient coating process thereof - Google Patents
Preparation of multi-scale micro-nano particles enhanced silicone rubber coating, and gradient coating process thereof Download PDFInfo
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- CN104087162A CN104087162A CN201410285645.4A CN201410285645A CN104087162A CN 104087162 A CN104087162 A CN 104087162A CN 201410285645 A CN201410285645 A CN 201410285645A CN 104087162 A CN104087162 A CN 104087162A
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Abstract
The invention relates to a formula of a hydrophobic coating and a construction process thereof. Specifically, a surface multi-scale micro-nano composite structure is constructed by carrying out composite modification on room temperature vulcanized silicone rubber by using micro and nano particles in different sizes. A fluorine-siloxane composite gradient layer structure and surface micro-nano multi-scale coarse structure are formed by three coating processes of coating the silicone rubber and fluorine-siloxane mixed rubber on the bottom; and coating 120# solvent oil and organically treated composite particles on the surface. Compared with a conventional process, the process provided by the invention is wide available in raw materials and low in cost, and can greatly reduce production cost of the coating. A static hydrophobic angle of the obtained coating is 154 degrees; a rolling angle is 4 degrees; a super-hydrophobic self-cleaning function is realized; and hydrophobic mobility reaches HC1 level. The formula and process provided by the invention have wide industrial prospects in the fields of anti-freezing rain, anti-pollution flashover and other hydrophobic self-cleaning.
Description
Technical field
The invention belongs to paint field, be specifically related to a kind of formula and construction technology of hydrophobic coat.
Background technology
Room temperature vulcanized silicone rubber, because of advantages such as distinctive self cure characteristic, hydrophobic nature, migration of hydrophobicity, becomes the first-selected coating of the anti-pollution flashover of power system power transmission and transforming equipment.The room temperature vulcanized silicone rubber coating applying on Electric Power Equipment Insulation layer, because of the difference of its formula, its performance difference is very large, and its anti-pollution flashover effect and economic benefit difference are also very large.
The small molecules hydrophobic group that the widely used room temperature vulcanized silicone rubber antifouling flush paint of Vehicles Collected from Market major ingredient contains some amount, this group has migration of hydrophobicity, and this is the core mechanism of room temperature vulcanized silicone rubber coating.But due to outside adverse environment, as wind, Exposure to Sunlight, frost etc.Small molecules hydrophobic group runs off gradually, and in the course of time, group all disappears, and coating migration of hydrophobicity all disappears, and now coating will lose the function of anti-pollution flashover.Current domestic most producers formula used, generally in 5 years, cannot meet the needs of fast-developing ultra-high voltage, super ehv power transmission equipment the work-ing life of coating.In order to improve the anti-fouling flashover performance of room temperature vulcanized silicone rubber, there is investigator to adopt the method for composite nano inoganic particle to improve the hydrophobic performance of room temperature vulcanized silicone rubber, Chinese patent 200810150685 has been introduced a kind of nanometer enhanced type fluorosilicone rubber antifouling flush paint, this coating, at aspects such as migration of hydrophobicity speed, harmony, persistence, all improves a lot compared with room temperature vulcanized silicone rubber antifouling flush paint.Can one-pass film-forming, can reach more than 20 years work-ing life.But, although simple nanostructure can improve the hydrophobic angle of room temperature vulcanized silicone rubber to a certain extent, but be still difficult to the effect that reaches super-hydrophobic, in addition this coating all adopts trifluoropropyl siloxane as base-material, because of trifluoropropyl siloxane complex manufacturing, price is higher, so the production cost of this coating is also higher, Industry Promotion meeting is subject to cost constraint.Based on the good hydrophobic performance of the meticulous micron/nano multilevel hierarchy of lotus leaf surface, the present invention adopt lower-cost different scale micron and nanoparticle room temperature vulcanized silicone rubber is carried out composite modified, the multistage micron and nanometer composite structure of structured surface.In addition, the composite particles three road spraying coating process that the present invention is coated with 120# solvent oil and organic-treating by primary coat silicon rubber and fluorosilicone blend glue, face form fluorine silicon complex gradient layer structure and the multistage coarse structures of surface micronano, realize surface super hydrophobic performance and good self-cleaning function and ensure the work-ing life that coating is grown.Because of the present invention add fluorosilicone amount less, and whole production process all normal temperature do not need heating, therefore, compared with traditional technology, the present invention can reduce coating material production cost, belongs to Green Product.
Summary of the invention
The preparation of the compound coating the present invention relates to mainly comprises two aspects, i.e. the preparation of the preparation of composite particles and anti-pollution flashover compound coating.
Wherein the preparation of composite particles and surface treatment comprise the steps:
(1) select 10um glass microballon, 200nm calcium carbonate, 20nm silicon-dioxide as raw material, by the standby multistage composite particle of high-speed kneading mechanism, rotating speed 1000-10000 rev/min, temperature: 20-50 degree Celsius, time: 1-3 hour.The mass ratio of glass microballon, calcium carbonate and silicon-dioxide is between 10: 1: 1～10: 1: 3.
(2) composite particles adopts properties-correcting agent hexamethyldisilazane (HDMS) to carry out surface treatment, treatment process steps and parameter are as follows: a certain proportion of HDMS is joined in composite particles, stir with reinforcement electric mixer, silicon-dioxide and HDMS mass ratio are between 0.6～1.0, stirring velocity 500-1000 rev/min, 150 degrees Celsius of mixing temperatures, lasting churning time is 5 hours.
The preparation of anti-pollution flashover compound coating comprises the steps:
(1) adopt 107# silicon rubber and fluorosilicone blend, the mass fraction of blend is respectively 100 parts, 107# silicon rubber, viscosity 6000mPas (25 degrees Celsius); 100 parts of fluorosilicones; Within under room temperature blend 0.5-1.5 hour, obtain the blend of room temperature vulcanized silicone rubber and fluorosilicone.
(2) be the methyl-silicone oil of 20 parts to adding weight ratio in the blend mixing; The linking agent of 20 parts; The catalyzer of 2 parts; The 120# solvent oil of 400 parts, stirs, and starts timing 2-4 minute.
(3) mixture after 2-4 minute, (2) being prepared is sprayed on pending substrate surface, 1 millimeter of coating thickness, and immediately at its surface spraying 120# solvent oil, controlling oil mass is 0.8-1.2 kilogram every square metre.
(4) adopt surface spraying that powder sprayer obtains to step (3) through the composite particles of surface modification, the composite particles layer thickness of spraying is 1.0-2.0mm, and self cure 5 hours can obtain having the antifouling flush paint of ultra-hydrophobicity.
The significance effect that the present invention obtains: the static hydrophobic angle of coating that the present invention obtains is greater than 150 degree, and roll angle is less than 10 degree, has realized super-hydrophobic automatic cleaning function; Migration of hydrophobicity reaches HC1 level; This product has the advantage that raw material sources are extensive, preparation technology is simple and cheap, and coating cost is than adopting pure fluorinated polysiloxane cost reduction 50%.This product is applicable to Electric Power Equipment Insulation coating, ensures power equipment operating safety, effective anti-pollution flashover, and excellent insulation performance, strong adhesion, anti-dust adhere to, corrosion-resistant, the life-span long, resistance to corona, ageing-resistant, have wide industrialization prospect.
Brief description of the drawings
Fig. 1 is static contact angle photo of the present invention.
Fig. 2 is the hydrophobic photo of macroscopic view of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail, and the present invention is not limit by these manufacture examples.
Embodiment 1
(1) select 10um glass microballon, 200nm calcium carbonate, 20nm silicon-dioxide as raw material, by the standby multistage composite particle of high-speed kneading mechanism, 1000 revs/min of rotating speeds, temperature: 20 degrees Celsius, 1 hour time.The mass ratio of glass microballon, calcium carbonate and silicon-dioxide 10: 1: 1
(2) composite particles adopts properties-correcting agent hexamethyldisilazane (HDMS) to carry out surface treatment, treatment process steps and parameter are as follows: claim HDMS and composite particles that silicon-dioxide is 0.6 with HDMS mass ratio to mix, stir with reinforcement electric mixer, 500 revs/min of stirring velocitys, 150 degrees Celsius of mixing temperatures, continue churning time 5 hours.
(3) adopt 107# silicon rubber and fluorosilicone blend, the mass fraction of blend is respectively 100 parts, 107# silicon rubber, viscosity 6000mPas (25 degrees Celsius); 100 parts of fluorosilicones; Under room temperature, blend obtains the blend of room temperature vulcanized silicone rubber and fluorosilicone for 0.5 hour.
(2) be the methyl-silicone oil of 20 parts to adding weight ratio in the blend mixing; The linking agent of 20 parts; The catalyzer of 2 parts; The 120# solvent oil of 400 parts, stirs, and starts timing 2 minutes.
The mixture after (3) 2 minutes, (2) being prepared is sprayed on pending substrate surface, 1 millimeter of coating thickness, and immediately at its surface spraying 120# solvent oil, controlling oil mass is 0.8 kilogram every square metre.
(6) the modification composite particles that adopts powder sprayer to obtain to the surface spraying step (2) of step (5) acquisition, the composite particles layer thickness of spraying is 1.0mm, self cure 5 hours, can obtain having the antifouling flush paint of ultra-hydrophobicity.
Embodiment 2
(1) select 10um glass microballon, 200nm calcium carbonate, 20nm silicon-dioxide as raw material, by the standby multistage composite particle of high-speed kneading mechanism, 10000 revs/min of rotating speeds, temperature: 50 degrees Celsius, 3 hours time.The mass ratio of glass microballon, calcium carbonate and silicon-dioxide 10: 1: 3
(2) composite particles adopts properties-correcting agent hexamethyldisilazane (HDMS) to carry out surface treatment, treatment process steps and parameter are as follows: claim HDMS and composite particles that silicon-dioxide is 1.0 with HDMS mass ratio to mix, stir with reinforcement electric mixer, 1000 revs/min of stirring velocitys, 150 degrees Celsius of mixing temperatures, continue churning time 5 hours.
(3) adopt 107# silicon rubber and fluorosilicone blend, the mass fraction of blend is respectively 100 parts, 107# silicon rubber, viscosity 6000mPas (25 degrees Celsius); 100 parts of fluorosilicones; Under room temperature, blend obtains the blend of room temperature vulcanized silicone rubber and fluorosilicone for 1.5 hours.
(4) be the methyl-silicone oil of 20 parts to adding weight ratio in the blend mixing; The linking agent of 20 parts; The catalyzer of 2 parts; The 120# solvent oil of 400 parts, stirs, and starts timing 4 minutes.
The mixture after (5) 4 minutes, (2) being prepared is sprayed on pending substrate surface, 1 millimeter of coating thickness, and immediately at its surface spraying 120# solvent oil, controlling oil mass is 1.2 kilograms every square metre.
(6) the modification composite particles that adopts powder sprayer to obtain to the surface spraying step (2) of step (5) acquisition, the composite particles layer thickness of spraying is 2.0mm, self cure 5 hours, can obtain having the antifouling flush paint of ultra-hydrophobicity.
Embodiment 3
(1) select 10um glass microballon, 200nm calcium carbonate, 20nm silicon-dioxide as raw material, by the standby multistage composite particle of high-speed kneading mechanism, 5000 revs/min of rotating speeds, temperature: 25 degrees Celsius, time 2 h.The mass ratio of glass microballon, calcium carbonate and silicon-dioxide 10: 1: 2.
(2) composite particles adopts properties-correcting agent hexamethyldisilazane (HDMS) to carry out surface treatment, treatment process steps and parameter are as follows: claim HDMS and composite particles that silicon-dioxide is 1.0 with HDMS mass ratio to mix, stir with reinforcement electric mixer, 800 revs/min of stirring velocitys, 150 degrees Celsius of mixing temperatures, continue churning time 5 hours.
(3) adopt 107# silicon rubber and fluorosilicone blend, the mass fraction of blend is respectively 100 parts, 107# silicon rubber, viscosity 6000mPas (25 degrees Celsius); 100 parts of fluorosilicones; Under room temperature, blend obtains the blend of room temperature vulcanized silicone rubber and fluorosilicone for 1 hour.
(2) be the methyl-silicone oil of 20 parts to adding weight ratio in the blend mixing; The linking agent of 20 parts; The catalyzer of 2 parts; The 120# solvent oil of 400 parts, stirs, and starts timing 3 minutes.
The mixture after (3) 3 minutes, (2) being prepared is sprayed on pending substrate surface, 1 millimeter of coating thickness, and immediately at its surface spraying 120# solvent oil, controlling oil mass is 1.0 kilograms every square metre.
(6) the modification composite particles that adopts powder sprayer to obtain to the surface spraying step (2) of step (5) acquisition, the composite particles layer thickness of spraying is 1.5mm, self cure 5 hours, can obtain having the antifouling flush paint of ultra-hydrophobicity.
Claims (5)
1. multistage micro-and nano-particles strengthens preparation and a gradient coating processes thereof for Silicone Rubber Based Coatings, it is characterized in that the static hydrophobic angle of obtained coating is greater than 150 degree, and roll angle is less than 10 degree, has super-hydrophobic automatic cleaning function.
2. strengthen the preparation of Silicone Rubber Based Coatings by multistage micro-and nano-particles claimed in claim 1, it is characterized in that having gradient-structure, is to form by the composite particles three road spraying coating process of primary coat silicon rubber and fluorosilicone blend glue, face painting 120# solvent oil and organic-treating.
3. the gradient coating processes that strengthens Silicone Rubber Based Coatings by multistage micro-and nano-particles claimed in claim 2 comprises the steps:
(1) adopt 107# silicon rubber and fluorosilicone blend, the mass fraction of blend is respectively 100 parts, 107# silicon rubber, viscosity 6000mPas (25 degrees Celsius); 100 parts of fluorosilicones; Blend 0.5-1.5 hour under room temperature.
(2) be the methyl-silicone oil of 20 parts to adding weight ratio in the blend mixing; The linking agent of 20 parts; The catalyzer of 2 parts; The 120# solvent oil of 400 parts, stirs, and starts timing 2-4 minute.
(3) mixture after 2-4 minute, (2) being prepared is sprayed on pending substrate surface, 1 millimeter of coating thickness, and immediately at its surface spraying 120# solvent oil, controlling oil mass is 0.8-1.2 kilogram every square metre.
(4) adopt surface spraying that powder sprayer obtains to step (3) through the composite particles of surface modification, the composite particles layer thickness of spraying is 1.0-2.0mm, and self cure 5 hours can obtain having the antifouling flush paint of ultra-hydrophobicity.
4. by surface modification composite particles claimed in claim 2, it is characterized in that its preparation comprises the steps:
(1) selecting particle diameter is that 10um glass microballon, 200nm calcium carbonate, 20nm silicon-dioxide are as raw material, by the standby multistage composite particle of high-speed kneading mechanism, rotating speed 1000-10000 rev/min, temperature: 20-50 degree Celsius, time: 1-3 hour.The mass ratio of glass microballon, calcium carbonate and silicon-dioxide is between 10: 1: 1～10: 1: 3.
(2) composite particles adopts properties-correcting agent hexamethyldisilazane (HDMS) to carry out surface treatment, treatment process steps and parameter are as follows: a certain proportion of HDMS is joined in composite particles, stir with reinforcement electric mixer, silicon-dioxide and HDMS mass ratio 0.6-1.0, stirring velocity 500-1000 rev/min, 150 degrees Celsius of mixing temperatures, lasting churning time is 5 hours, obtains the composite particles of modification.
5. by fluorosilicone claimed in claim 2, it is characterized in that it may be following material: trifluoro propyl trimethylammonium cyclotrisiloxane, terminal hydroxy group fluorinated polysiloxane, poly-(17 certain herbaceous plants with big flowers base) methylsiloxane, poly-(nine fluorine hexyls) siloxanes, poly-methyl (trifluoro propyl) siloxanes.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104448374A (en) * | 2014-12-03 | 2015-03-25 | 南昌航空大学 | Preparation method of super-hydrophobic surface of room temperature vulcanized silicone rubber |
| CN105925073A (en) * | 2016-06-27 | 2016-09-07 | 山东科技大学 | Anti-corrosion super-hydrophobic heat reflecting paint and preparation method thereof |
| CN106700927A (en) * | 2017-01-19 | 2017-05-24 | 北京国电富通科技发展有限责任公司 | Long-acting self-cleaning and antifouling paint as well as preparation and application methods thereof |
| CN111196906A (en) * | 2020-01-10 | 2020-05-26 | 江苏天润管业有限公司 | Super-hydrophobic heat-insulating coating and preparation method thereof |
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| CN101942200A (en) * | 2009-07-07 | 2011-01-12 | 佛山市皇冠化工有限公司 | Composition for anti-pollution flashover coating and anti-pollution flashover coating |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104448374A (en) * | 2014-12-03 | 2015-03-25 | 南昌航空大学 | Preparation method of super-hydrophobic surface of room temperature vulcanized silicone rubber |
| CN105925073A (en) * | 2016-06-27 | 2016-09-07 | 山东科技大学 | Anti-corrosion super-hydrophobic heat reflecting paint and preparation method thereof |
| CN105925073B (en) * | 2016-06-27 | 2018-03-20 | 山东科技大学 | A kind of corrosion-resistant super-hydrophobic heat reflection coatings and preparation method thereof |
| CN106700927A (en) * | 2017-01-19 | 2017-05-24 | 北京国电富通科技发展有限责任公司 | Long-acting self-cleaning and antifouling paint as well as preparation and application methods thereof |
| CN111196906A (en) * | 2020-01-10 | 2020-05-26 | 江苏天润管业有限公司 | Super-hydrophobic heat-insulating coating and preparation method thereof |
| CN111196906B (en) * | 2020-01-10 | 2021-11-19 | 江苏天润管业有限公司 | Super-hydrophobic heat-insulating coating and preparation method thereof |
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