CN102702822B - SiO2 freeze-drying glue composite thermal insulation exterior wall coating and preparation method thereof - Google Patents

SiO2 freeze-drying glue composite thermal insulation exterior wall coating and preparation method thereof Download PDF

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Publication number
CN102702822B
CN102702822B CN201210193393.3A CN201210193393A CN102702822B CN 102702822 B CN102702822 B CN 102702822B CN 201210193393 A CN201210193393 A CN 201210193393A CN 102702822 B CN102702822 B CN 102702822B
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freeze
drying glue
sio
thermal insulation
coating
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CN102702822A (en
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苗蕾
徐刚
苏丽芬
陈丽华
周建华
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Guangzhou Institute of Energy Conversion of CAS
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Guangzhou Institute of Energy Conversion of CAS
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Abstract

The invention provides a SiO2 freeze-drying glue composite thermal insulation exterior wall coating with low price and excellent thermal insulation effect, and a preparation method thereof. The SiO2 freeze-drying glue composite thermal insulation exterior wall coating comprises a reflecting layer and a thermal insulation layer, and is characterized in that the reflecting layer is crosslinked to a film forming matter by resin emulsion through a film forming aid and is obtained by uniformly mixing water and an infrared reflecting filling, and the infrared reflecting filling includes SiO2 freeze-drying glue; the thermal insulation layer is obtained by adding a porous material and water into a resin or white cement or lime mortar and uniformly mixing, and the porous material includes SiO2 freeze-drying glue. The SiO2 freeze-drying glue composite thermal insulation exterior wall coating, provided by the invention, has cheap raw materials and simple process. The conventional thermal insulation coating can be replaced by the obtained composite thermal insulation exterior wall coating through compounding the thermal insulation layer and the reflecting layer, and the composite thermal insulation exterior wall coating has low price and excellent thermal insulation effect. The coating, provided by the invention, can be used for surfaces of buildings, automobiles, train storage tanks and the like, the total reflectivity about sunlight is more than 80%, and the thermal insulation efficiency is 15-20 DEG C.

Description

A kind of SiO 2freeze-drying glue compound heat-insulation exterior coating and preparation method thereof
Technical field
The present invention relates to the technical field of coatings being applied to skin, be specially a kind of SiO 2freeze-drying glue compound heat-insulation exterior coating and preparation method thereof.
Technical background
Traditional coating effect mainly plays effect anticorrosion and attractive in appearance to material and product surface.The functional coating risen in recent years as the term suggests be exactly except meet attractive in appearance and anticorrosion except also to give coating certain function.Functional insulating moulding coating was 20 century 70 Global Oil times of crisis, and European countries are the product alleviating the once policy work on a large scale that energy problem launches.The U.S. has accounted for about 81% of all heat-insulating materials from heat-insulating material for building since 1987.In AND ENERGY RESOURCES CONSUMPTION IN CHINA, building energy consumption accounts for greatly 1/4 of national energy resource consumption total amount, and heat-insulating material for building only accounts for about 11% of total amount, and visible building energy conservation potentiality are very large.An important applied field of insulating moulding coating is exactly external wall.Building exterior wall heat preserving is energy-conservation only has development course more than 10 years in China, and before this, because relevant departments are positive, real estate developer is to the desalination of building energy conservation consciousness, and market is always lukewarm, and the enterprise being really engaged in outer wall heat insulating energy saving is also few.In recent years, the greenhouse gases effect caused along with the excessive emissions because of carbon dioxide was more and more obvious, and energy-saving and emission-reduction problem has become the focus of national governments.On the other hand, under the pressure of energy starved pressure, building energy conservation is all extremely focused in current countries in the world.The support of national policy, the demand in market, impels more much, research institution, enterprise and investor to start to pay close attention to this field of building exterior wall heat preserving.The market of Chinese architecture energy-saving material is comparatively large, especially building thermal insulation material.The energy loss of China's house house is roughly: body of wall accounts for 50%; Roofing accounts for 10%; Door and window accounts for 25%; Basement and ground account for 15%.Chinese architecture will realize fractional energy savings 50% in 2010, need carry out modernization overlay to external wall, and the market of wall heat insulation material will increase considerably.As far back as 2006, related data was added up, China's 05 year have housing 40,000,000,000 square metres, and annual newly-increased construction area about 2,000,000,000 square metres, wherein about 95% without any conservation measures.That is, China only has the building of 5% to take Insulation.Until these data in 2008 also do not have much changes.
Insulating moulding coating combines the dual characteristics of coating and insulation material, is formed with some strength and flexible heat-insulation layer after drying.Compared with conventional vacuum goods, its advantage is: (1) thermal conductivity factor is low, and heat insulation effect is remarkable; (2) can cohere with basic unit, globality is strong, is specially adapted to the insoluble special-shaped insulation of equipment of other insulation material comprehensively; (3) light weight, layer are thin, the building inside holding usable floor area that relatively improve house; (4) good flame resistance, the feature of environmental protection is strong; (5) construction is relatively simple, and the mode of manually smearing can be adopted to carry out; (6) material producing process is simple, and energy consumption is low.
After 20 century 70s, the production of external most attention insulation material and application under construction, make every effort to the consumption significantly reducing the energy, thus reduce environmental pollution and greenhouse effects.By the impact of the factor such as history and social and economic condition, lower-cost compound silicate insulating paint is very fast in China's development, You Shangbaijia research unit of China and enterprise carry out the research work of thermal insulation coatings, its main application is industrial heat preservation coating, as high-temperature pipe insulation, or the shell insulation of boiler, kiln etc.Also little in architectural application.The insulating moulding coating of external research and development is also applied at home on a large scale due to Cost Problems (about 300 yuan/kg), but market prospects are considerable really.Once the insulating moulding coating of a low cost, high energy-saving effect is succeeded in developing and can be used widely, can create much of a stir in the whole building trade in the world immediately, market potential is self-evident.
In AND ENERGY RESOURCES CONSUMPTION IN CHINA, building energy consumption accounts for greatly 1/4 of national energy resource consumption total amount, and wherein the energy loss of house house is roughly: body of wall accounts for 50%, and roofing accounts for 10%, and door and window accounts for 25%, and basement and ground account for 15%.According to statistics, 05 year China's have housing 40,000,000,000 square metres, annual newly-increased construction area about 2,000,000,000 square metres, wherein about 95% without any conservation measures.Therefore, building energy conservation market is huge.Enterprise of research institution and investor start to pay close attention to building energy conservation, especially the insulation of external wall.At present, exterior wall reflective thermal insulation coating is adopted exactly to energy-conservation a kind of simple and easy to do method of external wall, existing solar reflection coating, as patent CN1077730, CN1129238, CN03118007.8, utilize ceramic fine bead or glass microballoon as reflective insulation material, make coating application in exterior wall surface, play reflex, the microballon of hollow plays thermal insulation function.There is following point in this type of coating: 1. coating surface is coarse, decorative effect is poor; 2. coating structure is single, only has reflection or heat insulation effectiveness.
Summary of the invention
The object of this invention is to provide a kind of inexpensive SiO with having excellent effect of heat insulation 2freeze-drying glue compound heat-insulation exterior coating and preparation method thereof.
Compound heat-insulation exterior coating of the present invention is made up of reflecting layer 1 and thermal insulation layer 2 two layers, and reflecting layer 1 is surface layer, and thermal insulation layer 2 is bottom.Coating structure as shown in Figure 1.
Described reflecting layer does film forming matter by film-forming resin emulsion through coalescents is crosslinked, described film-forming resin refers to visible ray and near-infrared absorption is low, not containing C-O-C, the CO of heat absorptivity, the resin of-OH group, as organic siliconresin, acrylic resin, F-C resin, benzene emulsion, pure-acrylic emulsion etc.Above-mentioned film-forming resin is solution or emulsion state.Reflecting layer does film forming matter by film-forming resin emulsion through coalescents is crosslinked, adds water and infrared external reflection filler mixes and obtains.Coalescents adopts existing known technology.Containing SiO in described infrared external reflection filler 2freeze-drying glue, described SiO 2freeze-drying glue adds infrared external reflection filler, described SiO 2freeze-drying glue is foundation formerly disclosed Chinese patent " a kind of method of preparing nano polyporous material with large specific surface area by vacuum freeze-drying process ", number of patent application: the method preparation of 200910037592.3.In described infrared external reflection filler, other compositions are selected from ZnO, Al 2o 3, crystal whisker of hexa potassium titanate nano-powder etc.
Described thermal insulation layer is by resin or white cement or lime mortar adds porous material and water mixes and obtains, containing SiO in described porous material 2freeze-drying glue.Other compositions of described porous material are selected from diatomite, glass microballoon, ceramic fine bead, sepiolite etc.
Compound heat-insulation exterior coating method step of the present invention is as follows:
(1) preparation in reflecting layer: add film-forming resin emulsion and coalescents in container, stir; Add water, SiO 2freeze-drying glue, TiO 2nano-powder also adds infrared external reflection filler, stirs, namely obtains reflecting layer; Wherein, proportioning is as follows in mass ratio for each amounts of components:
Film-forming resin: 20-30
Coalescents: 0-5
TiO 2nano-powder: 10-25
SiO 2freeze-drying glue: 10-30
Infrared external reflection filler: 15-45
Water: 60-70
The composition and ratio of described infrared external reflection filler can be selected from following one or more: ZnO nano powder, Al 2o 3nano-powder, crystal whisker of hexa potassium titanate.
(2) preparation of thermal insulation layer: add porous material by resin or white cement or lime mortar, described porous material is by SiO 2freeze-drying glue and other porous materials composition, stir obtained; Wherein, proportioning is as follows in mass ratio for each amounts of components:
Resin or white cement or lime mortar: 20-35
Coalescents: 0-5
SiO 2freeze-drying glue: 5-10
Other porous materials: 45-60
Water: 50-70
Other porous materials described can be selected from following one or more: sepiolite, glass microballoon, diatomite.
(3) apply: be first coated with thermal insulation layer at building surface, tie; Finally be coated with reflecting layer again, its insulation thickness is at 100-1000 micron, and reflector thickness is 50-200 micron.
SiO of the present invention 2freeze-drying glue thermal-insulating external-wall coating, raw material is cheap, and technique is simple.Gained compound heat-insulation exterior coating substitutes traditional insulating moulding coating by the compound in thermal insulation layer and reflecting layer, inexpensive and have excellent effect of heat insulation.Coating of the present invention is used for the appearances such as building, automobile, train storage tank, and reach more than 80% to sunshine total reflectivity, heat-insulating efficiency reaches 15 ~ 20 DEG C.
Accompanying drawing explanation
Fig. 1 is compound heat-insulation exterior coating coating structure schematic diagram of the present invention;
Fig. 2 is the reflectivity curve of reflective heat-insulation paint of the present invention.
Description of reference numerals: 1, reflecting layer; 2, thermal insulation layer.
Detailed description of the invention
Below in conjunction with embodiment, content of the present invention is described in further details.
Embodiment 1
(1) preparation of thermal insulation layer: add porous material by resin or white cement or lime mortar, described porous material is by SiO 2freeze-drying glue and other porous materials composition, stir obtained; Wherein, proportioning is as follows in mass ratio for each amounts of components
Benzene emulsion: 20
Coalescents: 2
SiO 2freeze-drying glue: 10
Diatomite: 45
Glass microballoon: 15
Water: 50
(2) reflecting layer preparation: add film-forming resin emulsion and coalescents in container, stir; Add water, SiO 2freeze-drying glue, TiO 2nano-powder also adds infrared external reflection filler, stirs, namely obtains reflecting layer; Wherein, proportioning is as follows in mass ratio for each amounts of components:
Organic siliconresin: 20
Coalescents: 0
TiO 2nano-powder: 25
SiO 2freeze-drying glue: 20
ZnO nano powder: 10
Crystal whisker of hexa potassium titanate: 20
Water: 60
(3) apply: be first coated with thermal insulation layer at building surface, tie; Finally be coated with reflecting layer again, its insulation thickness is at 500 microns, and reflector thickness is 50 microns.
Embodiment 2
(1) preparation of thermal insulation layer: add porous material by resin or white cement or lime mortar, described porous material is by SiO 2freeze-drying glue and other porous materials composition, stir obtained; Wherein, proportioning is as follows in mass ratio for each amounts of components:
White cement: 35
Coalescents: 0
SiO 2freeze-drying glue: 5
Glass microballoon: 25
Sepiolite: 30
Water: 60
(2) reflecting layer preparation: add film-forming resin emulsion and coalescents in container, stir; Add water, SiO 2freeze-drying glue, TiO 2nano-powder also adds infrared external reflection filler, stirs, namely obtains reflecting layer; Wherein, proportioning is as follows in mass ratio for each amounts of components:
Acrylic resin: 30
Coalescents: 3
TiO 2nano-powder: 10
SiO 2freeze-drying glue: 10
Al 2o 3nano-powder: 25
Nano ZnO powder: 10
Crystal whisker of hexa potassium titanate: 10
Water: 65
(3) apply: be first coated with thermal insulation layer at building surface, tie; Finally be coated with reflecting layer again, its insulation thickness is at 1000 microns, and reflector thickness is 100 microns.
Embodiment 3
(1) preparation of thermal insulation layer: add porous material by resin or white cement or lime mortar, described porous material is by SiO 2freeze-drying glue and other porous materials composition, stir obtained; Wherein, proportioning is as follows in mass ratio for each amounts of components:
Lime mortar: 30
Coalescents: 5
SiO 2freeze-drying glue: 7
Ceramic fine bead: 15
Sepiolite: 30
Water: 70
(2) reflecting layer preparation: add film-forming resin emulsion and coalescents in container, stir; Add water, SiO 2freeze-drying glue, TiO 2nano-powder also adds infrared external reflection filler, stirs, namely obtains reflecting layer; Wherein, proportioning is as follows in mass ratio for each amounts of components:
F-C resin: 25
Coalescents: 5
TiO 2nano-powder: 15
SiO 2freeze-drying glue: 30
Crystal whisker of hexa potassium titanate: 5
Nano-ZnO: 25
Water: 65
(3) apply: be first coated with thermal insulation layer at building surface, tie; Finally be coated with reflecting layer again, its insulation thickness is at 100 microns, and reflector thickness is 200 microns.
Through national building materials inspection center and quality surveillance coating products inspection point of Guangdong Province according to the standard detection of coating, SiO prepared by the embodiment of the present invention 1,2,3 2the main performance index of freeze-drying glue compound heat-insulation exterior coating is as follows:
Sequence number Test item Performance indications
1 State in container Without caking, evenly
2 Application property Scrape, be coated with accessible
3 Surface drying time (h) ≤2
4 Resistance to water Without exception, nothing is bubbled, without coming off
5 Alkali resistance (48h) Without exception
6 Appearance of film Smooth, uniform color
7 Abrasion resistance (secondary) ≥300
8 Effect of heat insulation 15-20℃
As shown in Figure 2, the SiO of the embodiment of the present invention 1 preparation 2freeze-drying glue compound heat-insulation exterior coating, the most high reflectance in 200-2500nm wave-length coverage reaches more than 90%, and average reflectance reaches 80%.

Claims (6)

1. a SiO 2freeze-drying glue compound heat-insulation exterior coating, be made up of reflecting layer, thermal insulation layer two layers, it is characterized in that, described reflecting layer is prepared through following steps: in container, add film-forming resin emulsion and coalescents, stir; Add water, SiO 2freeze-drying glue, TiO 2nano-powder also adds infrared external reflection filler, stirs, namely obtains reflecting layer; Wherein, proportioning is as follows in mass ratio for each amounts of components: film-forming resin: 20-30, coalescents: 0-5, TiO 2nano-powder: 10-25, SiO 2freeze-drying glue: 10-30, infrared external reflection filler: 15-45, described infrared external reflection filler is selected from ZnO, Al 2o 3, crystal whisker of hexa potassium titanate nano-powder one or more, water: 60-70; Described thermal insulation layer is by resin or white cement or lime mortar adds porous material and water mixes and obtains, and described porous material is by SiO 2freeze-drying glue and other porous materials composition, wherein, each amounts of components in mass ratio proportioning is as follows: resin or white cement or lime mortar: 20-35, coalescents: 0-5, SiO 2freeze-drying glue: 5-10, other porous materials 45-60, water: 50-70.
2. SiO as claimed in claim 1 2freeze-drying glue compound heat-insulation exterior coating, is characterized in that described film-forming resin is selected from organic siliconresin, acrylic resin, F-C resin, benzene emulsion, pure-acrylic emulsion.
3. SiO as claimed in claim 1 2freeze-drying glue compound heat-insulation exterior coating, is characterized in that: other porous materials described are selected from diatomite, glass microballoon, ceramic fine bead, sepiolite.
4. a SiO 2the preparation method of freeze-drying glue compound heat-insulation exterior coating, is characterized in that comprising the following steps:
(1) preparation in reflecting layer: add film-forming resin emulsion and coalescents in container, stir; Add water, SiO 2freeze-drying glue, TiO 2nano-powder also adds infrared external reflection filler, stirs, namely obtains reflecting layer; Wherein, proportioning is as follows in mass ratio for each amounts of components:
Film-forming resin: 20-30
Coalescents: 0-5
TiO 2nano-powder: 10-25
SiO 2freeze-drying glue: 10-30
Infrared external reflection filler: 15-45, described infrared external reflection filler is selected from ZnO, Al 2o 3with one or more of crystal whisker of hexa potassium titanate nano-powder;
Water: 60-70
(2) preparation of thermal insulation layer: add porous material by resin or white cement or lime mortar, described porous material is by SiO 2freeze-drying glue and other porous materials composition, stir obtained; Wherein, proportioning is as follows in mass ratio for each amounts of components:
Resin or white cement or lime mortar: 20-35
Coalescents: 0-5
SiO 2freeze-drying glue: 5-10
Other porous materials 45-60
Water: 50-70
3) apply: be first coated with thermal insulation layer at building surface, tie; Finally be coated with reflecting layer again, its insulation thickness is at 100-1000 micron, and reflector thickness is 50-200 micron.
5. SiO as claimed in claim 4 2the preparation method of freeze-drying glue compound heat-insulation exterior coating, is characterized in that: described film-forming resin is selected from organic siliconresin, acrylic resin, F-C resin, benzene emulsion, pure-acrylic emulsion.
6. SiO as claimed in claim 4 2the preparation method of freeze-drying glue compound heat-insulation exterior coating, is characterized in that: other porous materials described are selected from diatomite, glass microballoon, ceramic fine bead, sepiolite.
CN201210193393.3A 2012-06-12 2012-06-12 SiO2 freeze-drying glue composite thermal insulation exterior wall coating and preparation method thereof Active CN102702822B (en)

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CN104497651B (en) * 2014-12-24 2017-02-22 中国科学院广州能源研究所 Freeze-dried glue transparent coating for protection of brick/stone historical relics and preparation method thereof
CN110256897B (en) * 2019-07-19 2021-12-07 安米微纳新材料(广州)有限公司 Inorganic ink, photovoltaic back plate glass and preparation method thereof

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CN1609036A (en) * 2004-07-05 2005-04-27 中国地质科学院成都矿产综合利用研究所 Modified heat isolating energy saving non-crystalline silica mineral material and its production process
CN101210146A (en) * 2006-12-30 2008-07-02 财团法人工业技术研究院 Composition of reflective insulation dope, double-layer heat insulation dope and preparing method thereof
CN101712835A (en) * 2008-10-08 2010-05-26 上海汇丽涂料有限公司 Heat reflection paint with hollow glass microballoon

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KR20040046356A (en) * 2002-11-27 2004-06-05 주식회사 효성이노테크 Ceramic sand mortar composition for in and out-side wall of building and method of preparing the same

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1609036A (en) * 2004-07-05 2005-04-27 中国地质科学院成都矿产综合利用研究所 Modified heat isolating energy saving non-crystalline silica mineral material and its production process
CN101210146A (en) * 2006-12-30 2008-07-02 财团法人工业技术研究院 Composition of reflective insulation dope, double-layer heat insulation dope and preparing method thereof
CN101712835A (en) * 2008-10-08 2010-05-26 上海汇丽涂料有限公司 Heat reflection paint with hollow glass microballoon

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