CN109762414A - Based on the modified heat retaining and insulated waterproof coating and preparation method thereof of aerosil - Google Patents
Based on the modified heat retaining and insulated waterproof coating and preparation method thereof of aerosil Download PDFInfo
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- CN109762414A CN109762414A CN201811593311.8A CN201811593311A CN109762414A CN 109762414 A CN109762414 A CN 109762414A CN 201811593311 A CN201811593311 A CN 201811593311A CN 109762414 A CN109762414 A CN 109762414A
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- aeroge
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Abstract
The invention discloses a kind of heat retaining and insulated waterproof coating modified based on aerosil, are made of the raw material of following weight percent: aeroge acrylic emulsion mixed slurry 55-70%, functional filler material 25-40%, wetting agent 1%, coalescing agent 3%, defoaming agent 1%；Aeroge acrylic emulsion mixed slurry is mixed by aerogel powder and acrylic emulsion, and aeroge is the aerosil using waterglass as silicon source.The present invention uses waterglass cheap and easy to get as the silicon source of aeroge, and prepares aerosil by normal temperature and pressure mode, low in cost, and product thermal and insulating performance is excellent, is beneficial to the popularization and application of aeroge.Therefore, inventor is using its aerogel powder and acrylic emulsion mixture as aqueous base-material, and arrange in pairs or groups wetting agent, coalescing agent and defoaming agent are made, which is made the heat retaining and insulated waterproof coating for having good insulation and water-proof function.
Description
Technical field
The invention belongs to technical field of coatings more particularly to a kind of insulation modified based on aerosil are anti-
Water paint and preparation method thereof.
Background technique
Aerosil has nanoaperture, is a kind of porous solid material, has low-density, high porosity
Design feature, thermal coefficient can have superinsulation performance down to 0.013w/mK.The very thin nanometer network knot of silica aerogel
Structure effectively limits the propagation of local thermal excitation, the solid-state thermal conductivity 2-3 order of magnitude lower than corresponding vitreous material.It receives
Rice Micro-v oid inhibits gas molecule to the contribution of heat transfer, becomes a kind of ideal transparent heat-insulated thermal insulation material, in solar energy
It has been applied using with building energy-saving aspect.A kind of Chinese patent " high heat insulating ability aeroge painting based on silica
Material (application number 201810279612.7) " has obtained thermal insulation property by using aerosil modified epoxy resin emulsion
Aeroge coating outstanding.But at present most of aerosil be using ethyl orthosilicate as silicon source, cause its at
This is high.
Acrylic emulsion can form fine and close film as a kind of water-based material, after solidification, can resist 0.3MPa hydraulic pressure,
It is used successfully in a large amount of building water-proof paints.Heat-insulating heat-preserving material on the market can be divided into organic and nothing according to the difference of material
Machine two major classes, organic insulation material are main are as follows: polyurathamc, styrofoam, phenol formaldehyde foam etc., but the type material is easy to aging,
It meets open fire easy firing and discharges toxic gas, most of constructions are board material splice, and building is easy to cause to seep water.Mineral-type materials master
It to be rock wool, mineral wool, glass bead etc., the type material is easy to crack, bulk density is big, thermal coefficient is high, water absorption rate is high non-watertight.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of raw material to be easy to get, low in cost, function admirable based on two
The modified heat retaining and insulated waterproof coating and preparation method thereof of silica aerogel.
In order to solve the above technical problems, the invention adopts the following technical scheme:
Based on the modified heat retaining and insulated waterproof coating of aerosil, it is made of the raw material of following weight percent:
Aeroge acrylic emulsion mixed slurry 55-70%, functional filler material 25-40%, wetting agent 1%, coalescing agent 3%, disappear
Infusion 1%；Aeroge acrylic emulsion mixed slurry is mixed by aerogel powder and acrylic emulsion, and aeroge is with water
Glass is the aerosil of silicon source.
The mass ratio of aerogel powder and acrylic emulsion is 1:3-6.
Functional filler material is rutile type titanium white and lithopone；Wetting agent is organic silicon modified by polyether wetting agent；At
Film auxiliary agent is alcohol ester-ten two；Defoaming agent is mineral oil antifoam agent.
The preparation method of the above-mentioned heat retaining and insulated waterproof coating modified based on aerosil, comprising the following steps:
(1) waterglass and 30% formamide of mass fraction 21%, in mass ratio waterglass: formamide: ethylene glycol are used
For 1:3:1 mixing, starts stirring and constant temperature reacts 2.5 hours at 50 DEG C, adjust pH to 12-13 with 10% glacial acetic acid and generate dioxy
SiClx gel；
(2) silica dioxide gel is placed in aging 12-24h in Ageing solution；
(3) silica dioxide gel after aging is placed in dedicated modified liquid and is modified 24-60 hours, every 12-48 hours is changed
Modification liquid repeats 3-5 times；
(4) airsetting is obtained within dry 12-48 hours under the conditions of the silica dioxide gel after the completion of modification being placed in 30-100 DEG C
Glue；
(5) it will be mixed after milled 300 mesh screen of aeroge with acrylic acid and high speed disperser be added, keep 1500r/
Min is added functional filler material and wetting agent, high speed dispersion 45 minutes, obtains mixed slurry；
(6) continue to be stirred slurry, and it is synchronous be added coalescing agent and defoaming agent, high speed dispersion 30 minutes to get.
Ageing solution presses deionized water: dehydrated alcohol mass ratio is 1:5-10 configuration；Modification liquid is by methyltriethoxysilane
It is prepared with n-hexane 1:10-50 in mass ratio.
The problems such as generating price height and bad heat-insulating heat-preserving material performance for current aerosil, inventor grinds
A kind of heat retaining and insulated waterproof coating modified based on aerosil has been made, has been made of the raw material of following weight percent:
Aeroge acrylic emulsion mixed slurry 55-70%, functional filler material 25-40%, wetting agent 1%, coalescing agent 3%, disappear
Infusion 1%；Aeroge acrylic emulsion mixed slurry is mixed by aerogel powder and acrylic emulsion, and aeroge is with water
Glass is the aerosil of silicon source.Accordingly, inventor has also set up corresponding preparation method.The present invention uses cheap and easy to get
Silicon source of the waterglass (sodium metasilicate) as aeroge, and aerosil, cost are prepared by normal temperature and pressure mode
Cheap, product thermal and insulating performance is excellent, is beneficial to the popularization and application of aeroge.Therefore, inventor uses its aerogel powder
With acrylic emulsion mixture as aqueous base-material, arrange in pairs or groups wetting agent, coalescing agent and defoaming agent are made, which is made tool
The heat retaining and insulated waterproof coating of standby good insulation and water-proof function.
Specific embodiment
Embodiment is based on the modified heat retaining and insulated waterproof coating of aerosil and its preparation
Basic recipe (weight percent): aeroge acrylic emulsion mixed slurry 55-70%, functional filler material 25-
40%, wetting agent 1%, coalescing agent 3%, defoaming agent 1%；Aeroge acrylic emulsion mixed slurry is by aerogel powder and third
Olefin(e) acid lotion mixes, and aeroge is the aerosil using waterglass as silicon source.
Each embodiment and the specific formula of control group are shown in Table 1.
Each raw material proportioning (weight percent %) of 1 embodiment 1-3 of table
Wherein, functional filler material is that (rutile and lithopone ratio are 4:6, gold for rutile type titanium white and lithopone
Red stone-type titanium dioxide is Tianjin Mace spy Science and Technology Ltd. R-566 type titanium dioxide, and lithopone is the limited public affairs of Hebei only color painting
Take charge of B311 type lithopone)；Wetting agent is organic silicon modified by polyether wetting agent (stepping 8 type organosilicon wetting agent of Figure 40)；Coalescing agent
For alcohol ester-ten two (Yi Shiman TEXNOL coalescing agent ester alcohol 12)；Defoaming agent is mineral oil antifoam agent (Taiwan Central Asia NXZ defoaming
Agent).
Preparation method, comprising the following steps:
(1) waterglass and 30% formamide of mass fraction 21%, in mass ratio waterglass: formamide: ethylene glycol are used
For 1:3:1 mixing, starts stirring and constant temperature reacts 2.5 hours at 50 DEG C, adjust pH to 12-13 with 10% glacial acetic acid and generate dioxy
SiClx gel；
(2) silica dioxide gel is placed in aging 12-24h in Ageing solution；Ageing solution presses deionized water: dehydrated alcohol quality
Than being configured for 1:5-10；
(3) silica dioxide gel after aging is placed in dedicated modified liquid and is modified 24-60 hours, every 12-48 hours is changed
Modification liquid repeats 3-5 times；Modification liquid is prepared by methyltriethoxysilane and n-hexane 1:10-50 in mass ratio.
(4) airsetting is obtained within dry 12-48 hours under the conditions of the silica dioxide gel after the completion of modification being placed in 30-100 DEG C
Glue；
(5) it will be mixed after milled 300 mesh screen of aeroge with acrylic acid and high speed disperser be added, keep 1500r/
Min is added functional filler material and wetting agent, high speed dispersion 45 minutes, obtains mixed slurry；
(6) continue to be stirred slurry, and it is synchronous be added coalescing agent and defoaming agent, high speed dispersion 30 minutes to get.
Aeroge is not used the heat retaining and insulated waterproof coating finished product modified based on aerosil for implementing 1-3 and
Modified waterproof heat-insulating coating (referring to Chinese patent application 201810245488.2) is tested for the property (testing standard: impermeable
Aqueous, tensile strength, heat resistance is referring to JG/T375-2012 metal Roof acrylic acid high-elastic waterproof coating；Determination of conductive coefficients ginseng
According to GB/T10294-2008；Temperature difference contrast test is referring to JG/T235-2008 architectural reflective heat-insulation paint) it the results are shown in Table 2.
2 embodiment of table and control group the performance test results
Existing aeroge coating Related product passes through without using the comparison of the temperature difference after aeroge coating, and as known from Table 2
The more intuitive embodiment embodiment of the present invention 1-3 product of temperature difference correlation data is embodied than control group more in various aspects such as insulations
Excellent performance.
Claims (5)
1. a kind of heat retaining and insulated waterproof coating modified based on aerosil, it is characterised in that by following weight percent
Raw material be made: aeroge acrylic emulsion mixed slurry 55-70%, functional filler material 25-40%, wetting agent 1%, film forming
Auxiliary agent 3%, defoaming agent 1%；The aeroge acrylic emulsion mixed slurry by aerogel powder and acrylic emulsion mixing and
At aeroge is the aerosil using waterglass as silicon source.
2. the heat retaining and insulated waterproof coating modified based on aerosil according to claim 1, it is characterised in that:
The mass ratio of the aerogel powder and acrylic emulsion is 1:3-6.
3. the heat retaining and insulated waterproof coating modified based on aerosil according to claim 1, it is characterised in that:
The functionality filler material is rutile type titanium white and lithopone；The wetting agent is organic silicon modified by polyether wetting agent；Institute
Stating coalescing agent is alcohol ester-ten two；The defoaming agent is mineral oil antifoam agent.
4. the preparation method based on the modified heat retaining and insulated waterproof coating of aerosil described in claim 1, feature
Be the following steps are included:
(1) waterglass and 30% formamide of mass fraction 21%, in mass ratio waterglass: formamide: ethylene glycol 1 are used:
3:1 mixing, starts stirring and constant temperature reacts 2.5 hours at 50 DEG C, adjusts pH to 12-13 with 10% glacial acetic acid and generates silica
Gel；
(2) silica dioxide gel is placed in aging 12-24h in Ageing solution；
(3) silica dioxide gel after aging is placed in dedicated modified liquid and is modified 24-60 hours, every 12-48 hours is changed once
Modification liquid repeats 3-5 times；
(4) aeroge is obtained within dry 12-48 hours under the conditions of the silica dioxide gel after the completion of modification being placed in 30-100 DEG C；
(5) it will be mixed after milled 300 mesh screen of aeroge with acrylic acid and high speed disperser be added, kept 1500r/min, add
Enter functional filler material and wetting agent, high speed dispersion 45 minutes, obtains mixed slurry；
(6) continue to be stirred slurry, and it is synchronous be added coalescing agent and defoaming agent, high speed dispersion 30 minutes to get.
5. the preparation method of the heat retaining and insulated waterproof coating modified based on aerosil according to claim 4,
It is characterized by: the Ageing solution presses deionized water: dehydrated alcohol mass ratio is 1:5-10 configuration；The modification liquid is by methyl three
Ethoxysilane and n-hexane 1:10-50 in mass ratio are prepared.
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| CN201811593311.8A CN109762414A (en) | 2018-12-25 | 2018-12-25 | Based on the modified heat retaining and insulated waterproof coating and preparation method thereof of aerosil |
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| CN201811593311.8A CN109762414A (en) | 2018-12-25 | 2018-12-25 | Based on the modified heat retaining and insulated waterproof coating and preparation method thereof of aerosil |
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Cited By (7)
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| CN110256110A (en) * | 2019-07-04 | 2019-09-20 | 新化县顺达电子陶瓷有限公司 | A kind of process of ceramic surface film forming |
| CN112852196A (en) * | 2021-01-11 | 2021-05-28 | 中广核研究院有限公司 | Aerogel coating and preparation method thereof, and aerogel coating and preparation method thereof |
| CN113354992A (en) * | 2021-06-18 | 2021-09-07 | 杭州和韵科技有限公司 | Aerogel thermal insulation water-based paint and preparation method and application thereof |
| CN113881300A (en) * | 2021-11-12 | 2022-01-04 | 上海涂固安高科技有限公司 | Thick aerogel thermal insulation texture coating |
| CN114133770A (en) * | 2021-12-17 | 2022-03-04 | 上海中南建筑材料有限公司 | Heat-preservation and decoration integrated aerogel coating composition and preparation method and application thereof |
| CN114561129A (en) * | 2021-12-16 | 2022-05-31 | 福建佰易科技有限公司 | Preparation method of waterproof heat-insulating coating and waterproof heat-insulating coating |
| CN116535909A (en) * | 2023-05-17 | 2023-08-04 | 武汉理工大学 | Silica aerogel water-based paint and preparation method and application thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110256110A (en) * | 2019-07-04 | 2019-09-20 | 新化县顺达电子陶瓷有限公司 | A kind of process of ceramic surface film forming |
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| CN113354992A (en) * | 2021-06-18 | 2021-09-07 | 杭州和韵科技有限公司 | Aerogel thermal insulation water-based paint and preparation method and application thereof |
| CN113881300A (en) * | 2021-11-12 | 2022-01-04 | 上海涂固安高科技有限公司 | Thick aerogel thermal insulation texture coating |
| CN114561129A (en) * | 2021-12-16 | 2022-05-31 | 福建佰易科技有限公司 | Preparation method of waterproof heat-insulating coating and waterproof heat-insulating coating |
| CN114133770A (en) * | 2021-12-17 | 2022-03-04 | 上海中南建筑材料有限公司 | Heat-preservation and decoration integrated aerogel coating composition and preparation method and application thereof |
| CN114133770B (en) * | 2021-12-17 | 2022-07-29 | 上海中南建筑材料有限公司 | Heat-preservation and decoration integrated aerogel coating composition and preparation method and application thereof |
| CN116535909A (en) * | 2023-05-17 | 2023-08-04 | 武汉理工大学 | Silica aerogel water-based paint and preparation method and application thereof |
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