CN105176394A - Organic and inorganic coating material based on sol-gel technique and preparation method thereof - Google Patents
Organic and inorganic coating material based on sol-gel technique and preparation method thereof Download PDFInfo
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- CN105176394A CN105176394A CN201510653821.XA CN201510653821A CN105176394A CN 105176394 A CN105176394 A CN 105176394A CN 201510653821 A CN201510653821 A CN 201510653821A CN 105176394 A CN105176394 A CN 105176394A
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Abstract
The invention provides an organic and inorganic coating material based on a sol-gel technique and a preparation method thereof. The coating material comprises components in weight of 20%-30% of epoxy resin, 30%-50% of aminopropyltriethoxysilane, 12%-25% of tetraethoxysilane and 12%-25% of absolute ethyl alcohol. The epoxy resin, the tetraethoxysilane and ethyl alcohol are added into a reactor after mixed, pneumatic stirring is performed, the circulating water temperature is 20 DEG C-30 DEG C, amino silane is drop-added after the temperature is constant, the temperature is raised to 35 DEG C-45 DEG C after several minutes, the drop-adding speed is controlled so as to keep the reaction under 40 DEG C, the temperature is kept after drop-adding, and the coating material is obtained. The composite material can be used as a coating for rust and corrosion resistance treatment and can absorb moisture in air for condensation cross-linking, so that other curing agents are not required to be added.
Description
Technical field
The present invention relates to a kind of matrix material, particularly, relate to a kind of can with coated material of the organic-inorganic based on sol-gel technique of making coatings and preparation method thereof.
Background technology
Epoxypaint also as steel, aluminium, galvinized steel and concrete protection and decorative coating, is widely used in navigation, structure, building and the occasion such as aircraft and product polishing.Epoxypaint is such as steel, concrete etc. on a lot of base material, has good non-corrosibility.
In prior art, as recorded in Chinese patent application 201110396815.2:
The sol-gel coating of organic inorganic hybridization is as a kind of novel surface protection coating, have strong with basal body binding force, to environment without the advantage such as endangering and technical process is simple, overcome the shortcomings such as inorganic coating high fragility, high temperature sintering simultaneously, obtain extensive research.Main raw material prepared by the sol-gel coating of organic inorganic hybridization is silane, and in colloidal sol process for preparation, organosilane is hydrolyzed, and generates the very high silanol groups of a large amount of reactive behavior (Si-OH).Sol coating is after metal group surface, the spacial framework that polycondensation generates Si-O-Si is there is between silanol groups, and silanol groups and metallic surface also react, connected by Me-O-Si key after reaction, thus reach the effect on covering metal surface.
The sol-gel coating of metallic surface organic inorganic hybridization comprises organic and inorganic two parts, the spacial framework of inorganic part mainly Si-O-Si, it is the skeleton part of whole coating, and the organic segment composition that is hydrolyzed does not occur primarily of organosilane organic moiety, this part can be good at making up inorganic coating poor toughness, easily cracks and be difficult to obtain the comparatively shortcoming such as thick film layers.But meanwhile, organic moiety may produce two shortcomings: 1, the comprehensive mechanical property of coating reduces; 2, the organic solvent on surface can remain hole after volatilizing, and affects its compactness and corrosion resisting property.What the solution of these two shortcomings normally changed silane adds kind or concentration, is that kind and the content of organic segment after hydrolysis changes, and changes organic with inorganic components ratio in the coating, thus improves the over-all properties of coating.
Chinese invention patent CN200910036439.9 provides a kind of epoxy resin composite material adding modified polyorganosiloxane, comprises the solidifying agent of the epoxy resin of 100 weight parts, the polyethers of 1 ~ 100 weight part and silsesquioxane comodified polysiloxane, 10 ~ 80 weight parts.But this technology needs the solidifying agent adding suitable composition.
Summary of the invention
For defect of the prior art, the object of this invention is to provide coated material of a kind of organic-inorganic based on sol-gel technique and preparation method thereof, to solve problems of the prior art.
For achieving the above object, the present invention is by the following technical solutions:
The invention provides a kind of coated material of the organic-inorganic based on sol-gel technique, this body of material skeleton is the polymer segment of alkoxy-silicon compound modification, because alkoxyl group that activity is stronger is in the end of polymkeric substance, therefore the condensation reaction that can be hydrolyzed under the effect of moisture in atmosphere, and form tridimensional network film.
Concrete, the coated material of the described organic-inorganic based on sol-gel technique, is made up of following component and weight percentage thereof:
As an optimal way, the coated material of the described organic-inorganic based on sol-gel technique, is made up of following component and weight percentage thereof:
Coated material in above-mentioned optimal way can obtain better effect.
Preferred, the epoxy resin GY2600 of the preferred CIBA company of described epoxy resin, Eq=0.25.
Preferred, mass content >=98% of described amino third class triethoxyl silane.
Preferred, the mass content of described tetraethoxy is 28%.
The invention provides a kind of preparation method of coated material of the organic-inorganic based on sol-gel technique, described method is: by epoxy resin, tetraethoxy TEOS, after ethanol mixing, (transparent liquid) adds in reactor, pneumatic stirring, circulating water temperature 20-30 DEG C, start after constant temperature to drip aminosilane (amino third class triethoxyl silane), after several minutes, temperature rises to 35 ~ 45 DEG C, controlling rate of addition makes temperature remain on less than 40 DEG C reactions, be incubated at least 4 hours again after dripping, obtain coated material.
Preferably, the air of nitrogen isolation containing steam is poured during described reaction.
The present invention adopts above-mentioned preparation method, can obtain tridimensional network film, the compactness of three-dimensional netted raising coating, improves Corrosion Protection.Epoxy-functional improves the binding ability with matrix simultaneously, improves clinging power and the antistrip performance of coating, thus improves mechanical property
The above-mentioned matrix material of the present invention can as film that is antirust, anti-corrosive treatment, and its principle of work is: the present invention is by the high molecular polymer of machine/inorganic molecule hydridization, maintains adhesion of epoxy resin, resistant to tarnishing, the characteristic that film-forming properties is good.Simultaneously grafting non-polar group on polymeric chain, improves the hardness of film, resistant to hydrolysis performance, weathering resistance and resistance to elevated temperatures.The end of molecular chain is the alkoxy base of moisture sensitive in addition, can absorb the moisture in air and condensation cross-linking, thus without the need to adding other solidifying agent and so on.
Compared with prior art, the present invention has following beneficial effect:
The present invention can be used for replacing traditional epoxypaint, to improve the reliability under its heat resistance performance, ground adhesion strength and severe rugged environment.Can be used for antirust, the anti-corrosive treatment of the steel construction piece of the facilities and equipments such as chemical industry equipment, maritime facilities, mining machinery, bridge.The decoration protection application of outdoor large storage tank.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
Embodiment 1
The coated material of the organic-inorganic based on sol-gel technique of the present embodiment, is made up of following component and weight percentage thereof:
Described epoxy resin adopts the epoxy resin GY2600 of CIBA company, Eq=0.25.
Mass content >=98% of described amino third class triethoxyl silane.
The mass content of described tetraethoxy is 28%.
According to the above ratio, by epoxy resin, tetraethoxy TEOS, after ethanol mixing, (transparent liquid) adds in glass reactor, pneumatic stirring, circulating water temperature 20-30 DEG C, start after constant temperature to drip aminosilane (amino third class triethoxyl silane), several minutes (can be 1-10 minute) afterwards temperature rises to 35 DEG C, controls rate of addition and makes temperature remain on less than 40 DEG C reactions, be incubated 4 hours again after dripping, obtain above-mentioned coated material.
Embodiment 2
The coated material of the organic-inorganic based on sol-gel technique of the present embodiment, is made up of following component and weight percentage thereof:
Described epoxy resin adopts the epoxy resin GY2600 of CIBA company, Eq=0.25.
Mass content >=98% of described amino third class triethoxyl silane.
The mass content of described tetraethoxy is 28%.
By epoxy resin, tetraethoxy TEOS, after ethanol mixing, (transparent liquid) adds in glass reactor, pneumatic stirring, circulating water temperature 20-30 DEG C, starts after constant temperature to drip aminosilane (amino third class triethoxyl silane), after several minutes, temperature rises to 45 DEG C, controlling rate of addition makes temperature remain on less than 40 DEG C reactions, is incubated more than 4 hours again after dripping, and pours the air of nitrogen isolation containing steam during reaction.
Based on the coated material of the organic-inorganic of sol-gel technique, this body of material skeleton is the polymer segment of alkoxy-silicon compound modification, because alkoxyl group that activity is stronger is in the end of polymkeric substance, therefore the condensation reaction that can be hydrolyzed under the effect of moisture in atmosphere, and form tridimensional network film.
Embodiment 3
The coated material of the organic-inorganic based on sol-gel technique of the present embodiment, is made up of following component and weight percentage thereof:
By epoxy resin, tetraethoxy TEOS, after ethanol mixing, (transparent liquid) adds in glass reactor, pneumatic stirring, circulating water temperature 20-30 DEG C, start after constant temperature to drip aminosilane (amino third class triethoxyl silane), after several minutes, temperature rises to 40 DEG C, controls rate of addition and makes temperature remain on less than 40 DEG C reactions, pours the air of nitrogen isolation containing steam during described reaction, be incubated 5 hours again after dripping, obtain coated material.
Embodiment 4
The coated material of the described organic-inorganic based on sol-gel technique of the present embodiment, is made up of following component and weight percentage thereof:
By epoxy resin, tetraethoxy TEOS, after ethanol mixing, (transparent liquid) adds in glass reactor, pneumatic stirring, circulating water temperature 20-30 DEG C, starts after constant temperature to drip aminosilane (amino third class triethoxyl silane), after several minutes, temperature rises to 40 DEG C, controlling rate of addition makes temperature remain on less than 40 DEG C reactions, is incubated more than 6 hours again after dripping, and pours the air of nitrogen isolation containing steam during described reaction.
Embodiment 5
The coated material of the described organic-inorganic based on sol-gel technique of the present embodiment, is made up of following component and weight percentage thereof:
By epoxy resin, tetraethoxy TEOS, after ethanol mixing, (transparent liquid) adds in glass reactor, pneumatic stirring, circulating water temperature 20-30 DEG C, starts after constant temperature to drip aminosilane (amino third class triethoxyl silane), after several minutes, temperature rises to 35 ~ 45 DEG C, controlling rate of addition makes temperature remain on less than 40 DEG C reactions, is incubated more than 4 hours again after dripping, and pours the air of nitrogen isolation containing steam during described reaction.
Test the coated material of the organic-inorganic based on sol-gel technique of the above embodiment of the present invention, specific experiment parameter is as follows:
Matrix material parameter:
| Test event | Varnish | Remarks |
| 1) outward appearance | Transparent liquid | Visual |
| 2) viscosity | 40 ~ 60 seconds | T-4# cup, 25 DEG C |
| 3) solid part >= | 35％ | 120℃/60min |
| 4) density g/cm 3 | 1.0±0.05g/cm 3 | 20℃ |
| 5) fineness μm | ≤5 | Hegman grind gage |
| 6) thickness μm is advised | 5～15 | Film thickness gauge measures |
| 7) clean | The mixture of Virahol, propylene glycol monomethyl ether or their arbitrary proportions |
Performance as film:
Matrix material of the present invention, in shady and cool, ventilation, dry place sealed storage, is avoided direct sunlight and keeps fire away.At 5 DEG C ~ 25 DEG C, relative humidity should be less than the indoor of 60%, and the quality guaranteed period of coating is no less than 60 days.
The base material that the present invention is suitable for as film includes but not limited to: glass, cast iron, aluminium alloy, copper, stainless steel and the low material of various plastics.Can add further rust protection pigment as: zinc powder, the product of polyphosphoric acid aluminium, reaches the performance of heavy antisepsis.The present invention has excellent sticking power and high strength in glass substrate, and has high visible light transmissivity, can provide the stained glass coating that decorative effect is splendid.
Matrix material of the present invention, can self-vulcanizing as film, easy construction; Resistance to boiling water, heat resistance, rust protection; High rigidity, wear-resistant, anti-scratch; Also good sticking power is shown in smooth metallic surface; Good outside durabitity, is applicable to severe rugged environment and uses; Excellent medium-resistance, resistance to various organic solvent.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (9)
1. based on a coated material for the organic-inorganic of sol-gel technique, it is characterized in that, described coated material is made up of following component and weight percentage thereof:
2. the coated material of the organic-inorganic based on sol-gel technique according to claim 1, is characterized in that, described coated material is made up of following component and weight percentage thereof:
3. the coated material of the organic-inorganic based on sol-gel technique according to claim 1 and 2, is characterized in that, described epoxy resin adopts the epoxy resin GY2600 of CIBA company, Eq=0.25.
4. the coated material of the organic-inorganic based on sol-gel technique according to claim 1 and 2, is characterized in that, mass content >=98% of described amino third class triethoxyl silane.
5. the coated material of the organic-inorganic based on sol-gel technique according to claim 1 and 2, is characterized in that, the mass content of described tetraethoxy is 28%.
6. the coated material of the organic-inorganic based on sol-gel technique according to claim 1 and 2, it is characterized in that, this body of material skeleton is the polymer segment of alkoxy-silicon compound modification, active strong alkoxyl group is in the end of polymkeric substance, can be hydrolyzed under the effect of moisture in atmosphere condensation reaction, and form tridimensional network film.
7. a preparation method for the coated material of the organic-inorganic based on sol-gel technique described in any one of claim 1-6, is characterized in that, described method is:
To add in reactor after epoxy resin, tetraethoxy, dehydrated alcohol mixing, pneumatic stirring, circulating water temperature 20-30 DEG C, start after constant temperature to drip amino third class triethoxyl silane, after several minutes, temperature rises to 35 ~ 45 DEG C, controlling rate of addition makes temperature remain on less than 40 DEG C reactions, is incubated again, obtains coated material after dripping.
8. the preparation method of the coated material of the organic-inorganic based on sol-gel technique according to claim 7, is characterized in that, pours the air of nitrogen isolation containing steam during described reaction.
9. the preparation method of the coated material of the organic-inorganic based on sol-gel technique according to claim 7, is characterized in that, described in drip after be incubated at least 4 hours again.
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Cited By (7)
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| CN105925141A (en) * | 2016-06-23 | 2016-09-07 | 安庆市银瑞商贸有限公司 | Surface anti-corrosion heat-resistant paint for communication equipment casing |
| CN106280906A (en) * | 2016-09-09 | 2017-01-04 | 广州市荟普新材料有限公司 | A kind of brilliant material of environment-protection nano molecular self-assembling automobile plating and preparation method thereof |
| CN109266181A (en) * | 2018-09-28 | 2019-01-25 | 湖南凯斯利新材料有限公司 | A kind of ceramic modified epoxy coating of fire resistant water-based inorganic nano and preparation method thereof |
| CN109385209A (en) * | 2018-10-09 | 2019-02-26 | 天津市中海科技实业总公司 | High-intensitive organic inorganic hybridization super-hydrophobic coat and preparation method thereof |
| CN114231128A (en) * | 2021-12-28 | 2022-03-25 | 苏州蓝沃奇纳米科技有限公司 | Preparation method of high-hardness composite ceramic-like coating |
| CN114941164A (en) * | 2022-06-16 | 2022-08-26 | 河南大学 | Preparation method of novel difunctional composite coating on surface of magnesium alloy |
| CN116875148A (en) * | 2023-07-19 | 2023-10-13 | 江苏金陵特种涂料有限公司 | High-temperature-resistant anticorrosive paint and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105925141A (en) * | 2016-06-23 | 2016-09-07 | 安庆市银瑞商贸有限公司 | Surface anti-corrosion heat-resistant paint for communication equipment casing |
| CN106280906A (en) * | 2016-09-09 | 2017-01-04 | 广州市荟普新材料有限公司 | A kind of brilliant material of environment-protection nano molecular self-assembling automobile plating and preparation method thereof |
| CN109266181A (en) * | 2018-09-28 | 2019-01-25 | 湖南凯斯利新材料有限公司 | A kind of ceramic modified epoxy coating of fire resistant water-based inorganic nano and preparation method thereof |
| CN109385209A (en) * | 2018-10-09 | 2019-02-26 | 天津市中海科技实业总公司 | High-intensitive organic inorganic hybridization super-hydrophobic coat and preparation method thereof |
| CN114231128A (en) * | 2021-12-28 | 2022-03-25 | 苏州蓝沃奇纳米科技有限公司 | Preparation method of high-hardness composite ceramic-like coating |
| CN114941164A (en) * | 2022-06-16 | 2022-08-26 | 河南大学 | Preparation method of novel difunctional composite coating on surface of magnesium alloy |
| CN114941164B (en) * | 2022-06-16 | 2024-01-19 | 河南大学 | Preparation method of magnesium alloy surface dual-function composite coating |
| CN116875148A (en) * | 2023-07-19 | 2023-10-13 | 江苏金陵特种涂料有限公司 | High-temperature-resistant anticorrosive paint and preparation method thereof |
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