CN104194562B - A kind of normal temperature cure monocomponent nanocomposite composite aqueous paint preparation method - Google Patents
A kind of normal temperature cure monocomponent nanocomposite composite aqueous paint preparation method Download PDFInfo
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- CN104194562B CN104194562B CN201410409685.5A CN201410409685A CN104194562B CN 104194562 B CN104194562 B CN 104194562B CN 201410409685 A CN201410409685 A CN 201410409685A CN 104194562 B CN104194562 B CN 104194562B
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Abstract
The present invention relates to coating technology of preparing, it is desirable to provide a kind of normal temperature cure monocomponent nanocomposite composite aqueous paint preparation method。The method includes: aqueous silicon oxide, titanium oxide, zirconia sol are separately added in independent reactor, re-uses pH value regulator and regulates pH value, is added with organic siloxane, stirring reaction, respectively obtains modification sol；Aqueous epoxy resins, drier and auxiliary agent are added in modification sol and stirs, obtain normal temperature cure single-component nanometer composite aqueous paint。Solidifying for colloidal sol-glue technology, organic-silicon-modified technology, nano modification and compounded technology are combined by the present invention with current water-base resin, prepare the good normal temperature cure single-component nanometer composite aqueous paint of combination property, be especially adapted for use on the base material needing clear coat。Nano-oxide colloidal sol is possible not only to improve coating hardness, wear-resisting, scratch resistance, and can improve ageing-resistant, corrosion-resistant, the heat resistance of coating。
Description
Technical field
The present invention relates to coating technology of preparing, particularly to a kind of normal temperature cure monocomponent nanocomposite composite aqueous paint preparation method。
Background technology
Coating industry is the chemical industry that China is important, is related to the development of national economy。But in traditional coating product use procedure, the discharge of VOC (VOCs) is relatively big, and environmental pollution is bigger。Water paint is with macromolecule resin for base material, with water for solvent, can effectively reduce VOCs discharge, reduce environmental pollution, have green, feature safe, easy to use。Currently, China's atmospheric pollution situation is comparatively severe, particularly national persistence haze how occurs nearly one or two years, with PM2.5, VOCsRegional atmospheric environment problem for major pollutants becomes increasingly conspicuous。These problems cause country's great attention to control atmosphere pollution problem, also promote country to go into overdrive to advance the development of water paint industry simultaneously。
Water paint has been achieved for huge advance through development in recent years。Yield is grown out of nothing, and technology is from coarse to finely, and kind is from single to variation, and various supporting resins, auxiliary agent, color essence, coating equipment, baking facility etc. are all constantly perfect。But also encounter some problems in actual popularization: such as: the problems such as water paint paint film resistance to water, poor, the lower hardness of thermostability。
Summary of the invention
The technical problem to be solved in the present invention is, overcomes deficiency of the prior art, it is provided that a kind of normal temperature cure one-component divides nano-composite water preparation method for coating。
For solving technical problem, the solution of the present invention is:
A kind of normal temperature cure monocomponent nanocomposite composite aqueous paint preparation method is provided, comprises the concrete steps that:
(1) under room temperature, at least one in aqueous titanium oxide colloidal sol that aqueous silica sol that solid content is 20%～50%, solid content are 5%～15% or aqueous zirconia sol that solid content is 20%～30% is separately added in independent reactor, is more each handled as follows:
Using pH value regulator to regulate pH value is 1.5～5, is added with organic siloxane, and the addition of organosiloxane is the 5%～45% of colloidal sol solid content；Heating up after stirring reaction 10～30min, controlling reaction temperature is 60～80 DEG C, continues reaction 6～12h, is then down to room temperature discharging, respectively obtains organic-silicon-modified silica sol, organic-silicon-modified titanium oxide sol or organic-silicon-modified zirconia sol；
(2), under room temperature, use pH value regulator to adjust the pH value of the organic-silicon-modified silica sol of step (1) gained, organic-silicon-modified titanium oxide sol or organic-silicon-modified zirconia sol to 2～11, obtain modification sol；
(3), under room temperature, aqueous epoxy resins, drier and auxiliary agent are added in a kind of modification sol in step (2) or in the mixture of several modification sol, stir, obtain normal temperature cure single-component nanometer composite aqueous paint；
Wherein, the mass ratio of solid constituent contained by aqueous epoxy resins and solid constituent contained by modification sol is 0.1～10；
The mass ratio that described drier is at least one in the salt of cobalt, zirconium, zinc, calcium or rare earth metal, drier and aqueous epoxy resins controls between 0.01%～0.6%；
Described auxiliary agent is at least one in defoamer (enlightening is high by 810), wetting agent (BYK346), and auxiliary agent accounts for the 0.5%～2% of coating solids。
As improvement, the organosiloxane in step of the present invention (1) is at least one in KH550, KH560, KH570, MTMS, MTES, phenyltrimethoxysila,e, phenyl triethoxysilane, trimethoxysilane, isobutyl triethoxy silane, dimethoxydiphenylsilane, diphenyl diethoxy silane。
It is HCl, HNO as improvement, step of the present invention (1) and the pH value regulator described in step (2)3, formic acid, acetic acid, NaOH, KOH, at least one in ammonia。
As improvement, described in step of the present invention (3), the solid content of aqueous epoxy resins is 40%～70%, and VOCs accounts for the 2%～6% of aqueous epoxy resins gross mass, and surplus is the water as solvent；Described VOCs is the mixture of ethylene glycol monobutyl ether, propylene glycol monomethyl ether and isopropanol。
Compared with existing technology of preparing, the beneficial effects of the present invention is:
Sol-gel technique, organic-silicon-modified technology, nano modification and compounded technology are combined by the present invention with current water-base resin, prepare the good normal temperature cure single-component nanometer composite aqueous paint of combination property, be especially adapted for use on the base material needing clear coat。
To the organic siloxane modified aqueous nano-oxide colloidal sol adopted, it is possible to solve different colloidal sol do not coexist because of surface characteristic mixing time occur gel, the problem such as precipitation, and the colloidal dispersion characteristic of nano-particle oxide can be kept。Do not need special installation grinding distribution when mixing with aqueous epoxy resins, only need General Decentralized machine or agitator to stir and can reach fine dispersion effect。Oxide sol is after organic siloxane modified, it is possible to be distributed in aqueous epoxy resins better, and can increase the adhesive force between epoxide resin polymer when later stage film forming and improve the adhesive force of coating and base material。Si-O key and organo-functional group in organosilicon combine with epoxy resin C-C key, epoxy bond and are conducive to improving the resistance to water of coating, thermostability, and the fragility of chemical resistance and epoxy resin。Nano-oxide colloidal sol is possible not only to improve coating hardness, wear-resisting, scratch resistance, and can improve ageing-resistant, corrosion-resistant, the heat resistance of coating。
Detailed description of the invention
A kind of normal temperature cure monocomponent nanocomposite composite aqueous paint preparation method, comprises the concrete steps that:
(1) under room temperature, at least one in aqueous titanium oxide colloidal sol that aqueous silica sol that solid content is 20%～50%, solid content are 5%～15% or aqueous zirconia sol that solid content is 20%～30% is separately added in independent reactor, is more each handled as follows:
Using pH value regulator to regulate pH value is 1.5～5, is added with organic siloxane, and the addition of organosiloxane is the 5%～45% of colloidal sol solid content；Heating up after stirring reaction 10～30min, controlling reaction temperature is 60～80 DEG C, continues reaction 6～12h, is then down to room temperature discharging, respectively obtains organic-silicon-modified silica sol, organic-silicon-modified titanium oxide sol or organic-silicon-modified zirconia sol；
(2), under room temperature, use pH value regulator to adjust the pH value of the organic-silicon-modified silica sol of step (1) gained, organic-silicon-modified titanium oxide sol or organic-silicon-modified zirconia sol to 2～11, obtain modification sol；
(3), under room temperature, aqueous epoxy resins, drier and auxiliary agent are added in a kind of modification sol in step (2) or in the mixture of several modification sol, stir, obtain normal temperature cure single-component nanometer composite aqueous paint。
In specific embodiment, parameter is in Table 1。
Table 1 specific embodiment and composition
Finally, in addition it is also necessary to it is noted that listed above is only specific embodiments of the invention。It is clear that the invention is not restricted to above example is sub, it is also possible to there are many deformation。All deformation that those of ordinary skill in the art can directly derive from present disclosure or associate, are all considered as protection scope of the present invention。
Claims (3)
1. a normal temperature cure monocomponent nanocomposite composite aqueous paint preparation method, it is characterised in that comprise the concrete steps that:
(1) under room temperature, at least one in aqueous titanium oxide colloidal sol that aqueous silica sol that solid content is 20%～50%, solid content are 5%～15% or aqueous zirconia sol that solid content is 20%～30% is separately added in independent reactor, is more each handled as follows:
Using pH value regulator to regulate pH value is 1.5～5, is added with organic siloxane, and the addition of organosiloxane is the 5%～45% of colloidal sol solid content；Heating up after stirring reaction 10～30min, controlling reaction temperature is 60～80 DEG C, continues reaction 6～12h, is then down to room temperature discharging, respectively obtains organic-silicon-modified silica sol, organic-silicon-modified titanium oxide sol or organic-silicon-modified zirconia sol；
(2), under room temperature, use pH value regulator to adjust the pH value of the organic-silicon-modified silica sol of step (1) gained, organic-silicon-modified titanium oxide sol or organic-silicon-modified zirconia sol to 2～11, obtain modification sol；
(3), under room temperature, aqueous epoxy resins, drier and auxiliary agent are added in a kind of modification sol in step (2) or in the mixture of several modification sol, stir, obtain normal temperature cure single-component nanometer composite aqueous paint；
Described in step (3), aqueous epoxy resins is made up of epoxy resin, VOC VOCs and water；Wherein, the solid content of aqueous epoxy resins is 40%～70%, and VOCs accounts for the 2%～6% of aqueous epoxy resins gross mass, and surplus is the water as solvent；Described VOCs is the mixture of ethylene glycol monobutyl ether, propylene glycol monomethyl ether and isopropanol；The mass ratio of solid constituent contained by aqueous epoxy resins and solid constituent contained by modification sol is 0.1～10；
The mass ratio that described drier is at least one in the salt of cobalt, zirconium, zinc, calcium or rare earth metal, drier and aqueous epoxy resins controls between 0.01%～0.6%；
Described auxiliary agent is at least one in defoamer, wetting agent, and auxiliary agent accounts for the 0.5%～2% of coating solids。
2. method according to claim 1, it is characterized in that, the organosiloxane in step (1) is at least one in KH550, KH560, KH570, MTMS, MTES, phenyltrimethoxysila,e, phenyl triethoxysilane, trimethoxysilane, isobutyl triethoxy silane, dimethoxydiphenylsilane, diphenyl diethoxy silane。
3. method according to claim 1, it is characterised in that step (1) and the pH value regulator described in step (2) are HCl, HNO3, formic acid, acetic acid, NaOH, KOH, at least one in ammonia。
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| CN201410409685.5A CN104194562B (en) | 2014-07-01 | 2014-08-19 | A kind of normal temperature cure monocomponent nanocomposite composite aqueous paint preparation method |
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| CN201410409685.5A CN104194562B (en) | 2014-07-01 | 2014-08-19 | A kind of normal temperature cure monocomponent nanocomposite composite aqueous paint preparation method |
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| CN106977983B (en) * | 2017-04-21 | 2019-10-01 | 河北精涂科技有限公司 | A kind of normal temperature solidified ceramic coating and preparation method thereof |
| CN110282633A (en) * | 2019-04-29 | 2019-09-27 | 江苏辉迈粉体科技有限公司 | A kind of method of modifying of nano oxidized silicon materials |
| CN110079195A (en) * | 2019-05-24 | 2019-08-02 | 上海瀚岱化学有限公司 | A kind of aqueous epoxy resins composition and its application |
| CN113402978A (en) * | 2021-07-06 | 2021-09-17 | 浙江大学杭州国际科创中心 | Preparation method of high-hardness wear-resistant metal anticorrosive paint |
| CN113817385A (en) * | 2021-09-26 | 2021-12-21 | 北京科技大学 | Si-Ti-Zr-epoxy organic-inorganic hybrid nano protective film and preparation method thereof |
| CN114477192B (en) * | 2021-12-17 | 2023-03-03 | 山东科缘新材料科技有限公司 | Silicon-zirconium composite sol, and preparation method and application thereof |
| CN114525078B (en) * | 2021-12-24 | 2023-03-31 | 南京长江涂料有限公司 | Water-based modified organic silicon high-temperature-resistant anticorrosive paint and preparation method thereof |
| CN115678324A (en) * | 2022-11-30 | 2023-02-03 | 湖州市南浔区绿色家居产业研究院 | Wear-resistant floor coating and preparation method and application thereof |
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| CN102070966A (en) * | 2011-01-14 | 2011-05-25 | 东南大学 | Organic and inorganic mixed fingerprint-resistance coating and preparation method thereof |
| CN102585574A (en) * | 2011-12-31 | 2012-07-18 | 东莞上海大学纳米技术研究院 | Method for preparing ultraviolet (UV) curing flame-retardant coating material and UV curing flame-retardant coating material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102070966A (en) * | 2011-01-14 | 2011-05-25 | 东南大学 | Organic and inorganic mixed fingerprint-resistance coating and preparation method thereof |
| CN102585574A (en) * | 2011-12-31 | 2012-07-18 | 东莞上海大学纳米技术研究院 | Method for preparing ultraviolet (UV) curing flame-retardant coating material and UV curing flame-retardant coating material |
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