CN109280454A - A kind of aqueous organic resin/compound aging resistant coating of modified nano-silica cerium and preparation method thereof - Google Patents
A kind of aqueous organic resin/compound aging resistant coating of modified nano-silica cerium and preparation method thereof Download PDFInfo
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- CN109280454A CN109280454A CN201810830674.2A CN201810830674A CN109280454A CN 109280454 A CN109280454 A CN 109280454A CN 201810830674 A CN201810830674 A CN 201810830674A CN 109280454 A CN109280454 A CN 109280454A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
Abstract
The invention discloses a kind of aqueous organic resin/compound aging resistant coatings of modified nano-silica cerium and preparation method thereof.The coating includes aqueous epoxy emulsion and modified nano-silica cerium two parts.Its preparation includes: that (1) uses outer emulsion process, and oiliness epoxy resin is switched to aqueous epoxy emulsion by the additional emulsifier sodium lauryl sulfate into epoxy resin on the contrary.(2) surface coating modification is carried out to nano ceric oxide using surfactant, promotes its dispersibility in water-based system.(3) self-control epoxy emulsion is subjected in high speed disperser physical blending with modified nano ceric oxide and composite coating is made.The aging resistant coating can use in external wall, and wherein base-material aqueous epoxy emulsion is low VOC emulsion, nontoxic, non-ignitable not quick-fried, meet environmental requirement；And antiager nano ceric oxide used herein also meets environmental requirement without containing noxious materials such as heavy metals.
Description
Technical field
The invention belongs to external wall aging resistant coatings, and in particular to a kind of for ageing-resistant aqueous organic of external wall
Resin/modified compound aging resistant coating of nano ceric oxide and preparation method thereof.
Background technique
From Christian era 1056 67 meters of Shanxi Wooden Pagoda at Yingxian Countys of China, to the Harry method tower of 828 meters of Dubai in 2010, building
Structure is constantly towards high-rise trend development.It is also social production in the demand that today's society skyscraper is human lives
Demand, be modernization, industrialization, urbanization and commercialized inevitable outcome at the same time.But at the same time, with building
Floor is increased, and is consequently increased because losing caused by external wall aging.Building external paint facing is exposed to greatly for a long time
In gas, by the irradiation of sunlight not section, under the action of ultraviolet light is prolonged and repeated, phenomena such as dusting, aging easily occur for coating,
This makes the coating of external wall lose the decoration functions and defencive function originally having.Traditional building external paint passes through
The effect of auxiliary agents such as addition age resister are to reach absorption ultraviolet light.And such method antiageing effect is poor, auxiliary agent cost is high.
Therefore the research and development and application of aging resistant coating are extremely urgent.
Summary of the invention
The disadvantages of present invention is high in order to solve traditional solvent type coating VOC content, strong toxicity, loss of properties on aging, provides
A kind of aqueous organic resin/compound aging resistant coating of modified nano-silica cerium.The present invention is with epoxy resin, nanometer titanium dioxide
Cerium, lauryl sodium sulfate, surfactant are raw material, convert epoxy emulsion for epoxy resin by phase inversion, are used
Surface cladding process is modified nano ceric oxide, improves its dispersibility in epoxy emulsion system, and utilize nanometer two
Cerium oxide has high ultraviolet absorption characteristic, prepares a kind of environment-protecting and non-poisonous aging resistant coating.
It is a further object of the present invention to provide above-mentioned aqueous organic resin/compound aging resistant coatings of modified nano-silica cerium
Preparation method.
The present invention is achieved by the following technical solutions:
A kind of aqueous organic resin/compound aging resistant coating of modified nano-silica cerium, including aqueous epoxy emulsion and change
Property nano ceric oxide, curing agent, wherein aqueous epoxy emulsion includes: epoxy resin, sodium lauryl sulfate, auxiliary agent, described
Auxiliary agent includes wetting agent, levelling agent, defoaming agent, dispersing agent, and the quality of sodium lauryl sulfate is the 1%- of epoxy resin quality
5%, auxiliary agent gross mass accounts for the 1% of epoxy resin, wetting agent, levelling agent, defoaming agent and dispersing agent the mass ratio of substance be 1:
1:1.5:1.5 system solid content is 45%~55%；Modified nano-silica cerium includes surfactant, partial size less than 100nm
Nano ceric oxide, deionized water, the surfactant be neopelex, sodium alkyl benzene sulfonate, tristearin
One or more of acid, dosage are the 1%-10% of nano ceric oxide；The amount of modified nano-silica cerium is aqueous ring
The 1%~5% of oxygen quality of the emulsion；The amount of curing agent is 1~1.2 times of aqueous epoxy emulsion quality；System solid content is 45%
~55%.
Second aspect, the present invention provide a kind of aqueous organic resin/compound aging resistant coating of modified nano-silica cerium
Preparation method, its step are as follows:
(1) preparation of aqueous epoxy emulsion: by epoxy resin, lauryl sodium sulfate in 50~90 DEG C of water-bath with
3000rpm mechanical stirring, lauryl sodium sulfate additional amount are the 1%~5% of epoxy resin quality, and auxiliary agent is pressed epoxy resin
The 1% of quality adds in system, and auxiliary agent is the mixture of wetting agent, levelling agent, defoaming agent and dispersing agent, mass ratio 1:1:
Deionized water 1mL/5min to 1mL/min rate is added in reaction system 1.5:1.5, and deionized water dosage is water-base epoxy
The 45%~55% of emulsion system gross mass, to deionized water titration after, cooling discharge, obtain solid content be 45%~
55% aqueous epoxy emulsion；
(2) preparation of modified nano-silica cerium: nano cerium dioxide powder being added in deionized water, suspension be made,
Nano ceric oxide and deionized water quality ratio are 1:100, and 30min is dispersed in ultrasonic dispersers, surfactant is added
In suspension, the dosage of surfactant is the 1%~10% of nano cerium dioxide powder quality, uses sodium hydroxide and hydrochloric acid
Solution regulation system pH be 3~11, and in 40~80 DEG C of water-bath react 0.5~2h after filter, after filter cake is taken out
Dry 4h, grinds spare in 120 DEG C of baking ovens；
(3) preparation of multiple emulsion: by obtained modified nano-silica cerium and aqueous epoxy emulsion under high speed disperser
It is stirred with 1000rmp, modified nano-silica cerium additional amount is the 1%~5% of aqueous epoxy emulsion quality, and is added solid
Agent, hardener dose are 1~1.2 times of aqueous epoxy emulsion, and deionized water is slowly added dropwise into system, and deionized water is used
Amount be multiple emulsion system gross mass 45%~55%, to deionized water titration after, obtain solid content be 45%~
55% multiple emulsion.
Preferably, the surfactant of step (2) is neopelex, in sodium alkyl benzene sulfonate, stearic acid
It is one or more of.
The third aspect provides the application of above-mentioned aqueous organic resin/modified nano-silica cerium compound aging resistant coating,
It asks coated base surface to reach Sa2.5 grades of sandblasting or more, brushes or spraying, room temperature, that is, curable, surface drying time 30min are real
The dry time is 12h or so.
Technical effect of the invention:
The advantages that aqueous epoxy resins are adaptable strong, construction is convenient, and it is using water as decentralized medium, compared with solvent type
The good characteristic that system has low VOC environment-protecting and non-poisonous, nano ceric oxide surface have a large amount of hydroxyl, show stronger pole
Property, easily in conjunction with the moisture in air, generate autohemagglutination phenomenon.Therefore, surface covering need to be carried out to nano ceric oxide to be modified,
Weaken its autohemagglutination phenomenon, increases its dispersibility in lotion.Surfactant have type is more, price is low, it is easy acquisition etc. it is excellent
Point, the modifying agent for being selected as nano ceric oxide have certain economy and promotional value.Nano ceric oxide has very
Strong ultraviolet absorption characteristic.Aqueous epoxy emulsion is combined with nano ceric oxide, advantage possessed by comprehensive the two can obtain
It is nontoxic to a kind of low VOC emulsion, it is non-ignitable not quick-fried, meet environmental requirement, the environmental protection coating material with excellent aging resistance energy.
Specific embodiment
By following detailed description it will be further appreciated that the features and advantages of the invention.Provided embodiment is only pair
The explanation of the method for the present invention, remaining content without limiting the invention in any way announcement.
Nano ceric oxide in following embodiment is purchased from Aladdin, product number: C103984, < 100nm (SEM).Gu
Agent is purchased from Shanghai Aishibo Organosilicon Material Co., Ltd.
Embodiment 1:
In the present embodiment, aqueous organic resin/compound aging resistant coating of modified nano-silica cerium according to quality meter, including
Following steps:
(1) 100g epoxy resin, 1g lauryl sodium sulfate the preparation of aqueous epoxy emulsion: are weighed in certain 50 DEG C of water
With 3000rpm mechanical stirring in bath, 0.2g wetting agent, 0.2g levelling agent, 0.3g defoaming agent and 0.3g dispersing agent are added into body
In system, 125g deionized water is added in reaction system by 1mL/5min rate, after being titrated to deionized water, is cooled down out
Material obtains the aqueous epoxy emulsion that solid content is 45%.
(2) preparation of modified nano-silica cerium: 2g nano cerium dioxide powder is added in deionized water and is made suspended
Liquid disperses 30min in ultrasonic dispersers, and the sodium dodecyl benzenylsulfonate of 0.02g is added in suspension, sodium hydroxide is used
And hydrochloric acid solution regulation system pH to 3, and filtered after reacting 0.5h in 40 DEG C of water-bath, at 120 DEG C after filter cake is taken out
Dry 4h, grinds spare in baking oven.
(3) preparation of multiple emulsion: by obtained 1g modified nano-silica cerium and the aqueous oxygen lotion of 100g in high speed dispersion
It is stirred under device with 1000rmp, and 100g curing agent is added, weighed 178g deionized water and be slowly added dropwise into system, wait go
After ionized water titrates, the multiple emulsion that solid content is 45% is obtained.
(4) multiple emulsion is coated in the tinplate sheet that surface roughness is Sa2.5 or more with bar spreader, and controlled
Being film-made thickness is 30 μm, 60 μm and 80 μm.
Above-mentioned aqueous organic resin/compound aging resistant coating of modified nano-silica cerium is tested for the property, as a result such as
Under:
Embodiment 2:
In the present embodiment, aqueous organic resin/compound aging resistant coating of modified nano-silica cerium according to quality meter, including
Following steps:
(1) 100g epoxy resin, 3g lauryl sodium sulfate the preparation of aqueous epoxy emulsion: are weighed in certain 70 DEG C of water
With 3000rpm mechanical stirring in bath, 0.2g wetting agent, 0.2g levelling agent, 0.3g defoaming agent and 0.3g dispersing agent are added into body
In system, 104g deionized water is added in reaction system by 3mL/5min rate, after being titrated to deionized water, is cooled down out
Material obtains the aqueous epoxy emulsion that solid content is 50%.
(2) preparation of modified nano-silica cerium: 4g nano cerium dioxide powder is added in deionized water and is made suspended
Liquid disperses 30min in ultrasonic dispersers, and the sodium dodecyl benzenylsulfonate of 0.2g is added in suspension, sodium hydroxide is used
And hydrochloric acid solution regulation system pH to 7, and filtered after reacting 1h in 60 DEG C of water-bath, it is dried after filter cake is taken out at 120 DEG C
Dry 4h, grinds spare in case.
(3) preparation of multiple emulsion: by obtained 3g modified nano-silica cerium and the aqueous oxygen lotion of 100g in high speed dispersion
It is stirred under device with 1000rmp, and 110g curing agent is added, weighed 163g deionized water and be slowly added dropwise into system, wait go
After ionized water titrates, the multiple emulsion that solid content is 50% is obtained.
(4) multiple emulsion is coated in the tinplate sheet that surface roughness is Sa2.5 or more with bar spreader, and controlled
Being film-made thickness is 30 μm, 60 μm and 80 μm.
Aqueous organic resin obtained above/compound aging resistant coating of modified nano-silica cerium is tested for the property,
As a result as follows:
Embodiment 3:
In the present embodiment, aqueous organic resin/compound aging resistant coating of modified nano-silica cerium according to quality meter, including
Following steps:
(1) 100g epoxy resin, 5g lauryl sodium sulfate the preparation of aqueous epoxy emulsion: are weighed in certain 90 DEG C of water
With 3000rpm mechanical stirring in bath, 0.2g wetting agent, 0.2g levelling agent, 0.3g defoaming agent and 0.3g dispersing agent are added into body
In system, 87g deionized water is added in reaction system by 1mL/min rate, after deionized water titration, cooling discharge,
Obtain the aqueous epoxy emulsion that solid content is 55%.
(2) preparation of modified nano-silica cerium: 6g nano cerium dioxide powder is added in deionized water and is made suspended
Liquid disperses 30min in ultrasonic dispersers, and the stearic acid of 0.6g is added in suspension, sodium hydroxide and hydrochloric acid solution are used
Regulation system pH to 11, and filtered after reacting 2h in 80 DEG C of water-bath, it is dry in 120 DEG C of baking ovens after filter cake is taken out
4h is ground spare.
(3) preparation of multiple emulsion: by obtained 5g modified nano-silica cerium and the aqueous oxygen lotion of 100g in high speed dispersion
It is stirred under device with 1000rmp, and 120g curing agent is added, weighed 147g deionized water and be slowly added dropwise into system, wait go
After ionized water titrates, the multiple emulsion that solid content is 55% is obtained.
(4) multiple emulsion is coated in the tinplate sheet that surface roughness is Sa2.5 or more with bar spreader, and controlled
Being film-made thickness is 30 μm, 60 μm and 80 μm.
Aqueous organic resin obtained above/compound aging resistant coating of modified nano-silica cerium is tested for the property,
As a result as follows:
As can be seen from the above table, the compound aging resistant coating machine of aqueous organic resin/modified nano-silica cerium of the invention
Tool is had excellent performance, and has outstanding ageing resistance, is met the requirement constructed in normal circumstances, is applicable to external wall etc.
Field.
Embodiment described above is only limitted to technical solution of the present invention requirement, but is not limited to the present invention, all at this
Any modification, supplement or the equivalence replacement made in the spirit of invention should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of aqueous organic resin/compound aging resistant coating of modified nano-silica cerium, which is characterized in that including water-base epoxy
Lotion, modified nano-silica cerium and curing agent, wherein aqueous epoxy emulsion includes: epoxy resin, sodium lauryl sulfate, helps
Agent, the auxiliary agent include wetting agent, levelling agent, defoaming agent, dispersing agent, and the quality of sodium lauryl sulfate is epoxy resin quality
1%-5%, auxiliary agent gross mass accounts for the 1% of epoxy resin, wetting agent, levelling agent, defoaming agent and dispersing agent the mass ratio of substance be
1:1:1.5:1.5 system solid content is 45% ~ 55%；Modified nano-silica cerium includes surfactant, partial size less than 100nm
Nano ceric oxide, deionized water, the surfactant be neopelex, sodium alkyl benzene sulfonate, tristearin
One or more of acid, dosage are the 1%-10% of nano ceric oxide；The amount of modified nano-silica cerium is water-base epoxy
The 1% ~ 5% of quality of the emulsion；The amount of curing agent is 1 ~ 1.2 times of aqueous epoxy emulsion quality；System solid content is 45% ~ 55%.
2. a kind of preparation side of aqueous organic resin/compound aging resistant coating of modified nano-silica cerium described in claim 1
Method, which is characterized in that steps are as follows:
(1) preparation of aqueous epoxy emulsion: by epoxy resin, lauryl sodium sulfate in 50 ~ 90 DEG C of water-bath with
3000rpm mechanical stirring, lauryl sodium sulfate additional amount are the 1% ~ 5% of epoxy resin quality, and auxiliary agent is pressed asphalt mixtures modified by epoxy resin lipid
Amount 1% adds in system, and auxiliary agent is the mixture of wetting agent, levelling agent, defoaming agent and dispersing agent, mass ratio 1:1:
Deionized water 1mL/5min to 1mL/min rate is added in reaction system 1.5:1.5, and deionized water dosage is water-base epoxy
The 45% ~ 55% of emulsion system gross mass, after deionized water titration, cooling discharge obtains the water that solid content is 45% ~ 55%
Property epoxy emulsion；
(2) preparation of modified nano-silica cerium: nano cerium dioxide powder being added in deionized water, suspension be made, nanometer
Ceria and deionized water quality ratio are 1:100, and 30min is dispersed in ultrasonic dispersers, surfactant is added suspended
In liquid, the dosage of surfactant is the 1%~10% of nano cerium dioxide powder quality, uses sodium hydroxide and hydrochloric acid solution tune
Section system pH is 3~11, and filters after reacting 0.5 ~ 2h in 40 ~ 80 DEG C of water-bath, in 120 DEG C of baking ovens after filter cake is taken out
Interior dry 4h is ground spare；
(3) preparation of multiple emulsion: by obtained modified nano-silica cerium and aqueous epoxy emulsion under high speed disperser with
1000rmp is stirred, and modified nano-silica cerium additional amount is the 1% ~ 5% of aqueous epoxy emulsion quality, and curing agent is added,
Hardener dose is 1 ~ 1.2 times of aqueous epoxy emulsion, deionized water is slowly added dropwise into system, deionized water dosage is multiple
The 45% ~ 55% of emulsion system gross mass is closed, after titrating to deionized water, obtains the multiple emulsion that solid content is 45% ~ 55%.
3. according to the method described in claim 2, it is characterized in that, the surfactant of step (2) is dodecyl benzene sulfonic acid
One or more of sodium, sodium alkyl benzene sulfonate, stearic acid.
4. the application of aqueous organic resin described in claim 1/modified nano-silica cerium compound aging resistant coating, feature
It is, it is desirable that coated base surface reaches Sa2.5 grades of sandblasting or more, brushes or spraying, room temperature, that is, curable, surface drying time are
30min, doing solid work the time is 12h or so.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810830674.2A CN109280454A (en) | 2018-07-26 | 2018-07-26 | A kind of aqueous organic resin/compound aging resistant coating of modified nano-silica cerium and preparation method thereof |
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| CN201810830674.2A CN109280454A (en) | 2018-07-26 | 2018-07-26 | A kind of aqueous organic resin/compound aging resistant coating of modified nano-silica cerium and preparation method thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893452A (en) * | 2017-03-15 | 2017-06-27 | 包头稀土研究院 | Nano rare earth modified epoxy anticorrosive paint and preparation method thereof |
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- 2018-07-26 CN CN201810830674.2A patent/CN109280454A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893452A (en) * | 2017-03-15 | 2017-06-27 | 包头稀土研究院 | Nano rare earth modified epoxy anticorrosive paint and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 朱静燕等: ""十二烷基磺酸钠相反转乳化剂对环氧乳液性能的影响"", 《上海涂料》 * |
| 郭立峰等: ""纳米二氧化铈粉体的表面改性研究"", 《石油化工高等学校学报》 * |
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Application publication date: 20190129 |