CN103740188A - Heat insulating and preserving coating for exterior wall of building - Google Patents
Heat insulating and preserving coating for exterior wall of building Download PDFInfo
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- CN103740188A CN103740188A CN201410021246.7A CN201410021246A CN103740188A CN 103740188 A CN103740188 A CN 103740188A CN 201410021246 A CN201410021246 A CN 201410021246A CN 103740188 A CN103740188 A CN 103740188A
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Abstract
The invention provides a heat insulating and preserving coating for an exterior wall of a building. The heat insulating and preserving coating comprises the components: polymer emulsion, functional filler, titanium dioxide, a thickening agent, a wetting agent, a dispersing agent, a defoaming agent and water, wherein the functional filler is a self-prepared fly ash zeolite molecular sieve; the polymer emulsion is soft styrene-acrylic emulsion. The coating has the advantages that a coating layer formed on a building wall body is outstanding in performance, the heat insulating and preserving effect is superior to that of other similar heat preserving coatings, and the temperature difference can reach more than 10 DEG C compared with a blank phase; in addition, the heat insulating and preserving coating has the advantages of being environmentally-friendly, nontoxic, high in adhesive force, difficult to crack, easy to construct, etc., is applicable to the coating layer for heat preserving of the exterior wall of the building, and shows a remarkable environmental protection and energy saving effect.
Description
Technical field
The present invention relates to heat-insulating heat-preserving material, also relate to coal-based solid waste reutilization technology field, specifically belong to a kind of heat insulating coatings for building exterior wall surface.
Background technology
Be accompanied by human sciences's technology and rapid development of economy, the mankind's energy consumption grows with each passing day.Wherein, building energy consumption has accounted for 30%～40% of national total energy consumption.China has put into effect a series of policies and regulations, to buildings, must take to force conservation measures.The improvement of skin building enclosure power-saving technology, improves building heat preserving heat-proof quality, can effectively reduce building energy consumption, and this reduction for entire society's energy consumption has earth shaking meaning.In buildings enclosed structure, the major significance of thermal insulation layer is to reduce the transmission of indoor outer heat.Be mainly reflected in heat-insulating property winter, heat transfer type is mainly convection current and thermal conduction; Show as heat insulating function summer, heat transfer type is mainly radiative transfer and thermal conduction.For buildings, the mode of isolated heat is to utilize the thermal resistance of closed gas in essence.Wherein, heat insulating coatings because it is easy to use, the advantage such as good heat-insulation effect and economically feasible is more and more subject to people's favor, development prospect is wide.
Heat-insulating heat-preserving material in the market, mostly be take pearlstone, diatomite, vermiculite, asbestos etc. as thermal insulating filling, it is all porous material, air molecule is enclosed in to short space, molecule is difficult for arbitrarily mobile, in a kind of relative stationary state, thereby block the transmission of heat, improved the heat-insulating property of material; But its common weak point is its less stable, and after moisture absorption, heat insulation effect is poor, and physical strength is little.Therefore the external wall thermal insulation coating of, developing a kind of high insulating effect, good stability, easy construction has important practical significance.
Summary of the invention
The object of the present invention is to provide that a kind of thermal conductivity is low, heat-insulation and heat-preservation is good, resistance to cleavage is good, strong adhesion and easy working external wall heat insulating coatings.
A kind of external wall heat insulating coatings provided by the invention, component is by weight percentage: water 20%～30%, polymer emulsion 25%～35%, functional stuffing 2%～10%, titanium dioxide 35%～45%, thickening material 0.5%, wetting agent 0.5%～1%, dispersion agent 0.1%, defoamer 0.1～0.3%;
Described functional stuffing is coal ash zeolite, its preparation method is: flyash is crossed to 100～300 mesh sieves, by solid-to-liquid ratio 1: 3～15, flyash is joined in the NaOH solution of 1～7mol/L, stir 1～3h at 80～140 ℃, separate and get supernatant liquor and add while stirring NaAlO
2in regulator solution, Si/Al molar ratio is 1.5～4, proceeds in reactor after 80～140 ℃ of confined reaction 2～8h, separates to get solid phase and wash with water, to washing lotion pH value 8～9 post-dryings.This coal ash zeolite belongs to porous material, and thermal conductivity is low, and intensity is good, is good lagging material.
Described polymer emulsion is flexible benzene emulsion (the BASF S400F emulsion that preferably solid content is 45%～57%), flexible pure-acrylic emulsion or aqueous polyvinyl acetate emulsion; Play cohesive action.
Described titanium dioxide is color stuffing, also plays skeleton function; It is high that titanium dioxide has opacifying power, and reducing power is strong, and brightness value is large, good stability.
Described thickening material is Natvosol, with the rheological of adjusting coating.
Described wetting agent is AMP-95(2-amino-2-methyl-1-propyl alcohol); For improving surface tension and the perviousness of coating, can soak better ground, thereby improve the sticking power of coating, also play certain dissemination simultaneously.
Described dispersion agent is P-19(polyacrylic acid sodium salt), can make particle stabilized the floating on a liquid after disperseing.
Described defoamer is tributyl phosphate, depending on foaming situation in mixture, drips, and the bubble producing when reducing various material mixing, these bubbles will be unfavorable for coating application.
The preparation method of a kind of external wall heat insulating coatings provided by the invention, step comprises: according to above-mentioned raw materials proportioning, polymer emulsion and water are mixed, then add the solid powders such as the titanium dioxide that mixed, functional stuffing, thickening material, wetting agent, dispersion agent, rapid stirring mixes, in whipping process, add defoamer, mix.
External wall heat insulating coatings of the present invention is compared with existing like product, and tool has the following advantages:
1) to adopt coal ash zeolite molecular sieve be functional stuffing for external wall heat insulating coatings of the present invention, and thermal conductivity is low, and heat preservation and insulation is good, and rational size distribution, ultimate compression strength are high, and good stability is not variable broken; This thermal-insulation coating effect is better than other similar thermal insulation coatings, and the temperature difference can reach more than 10 ℃ compared with blank, can reduce the load of buildings heating, air-conditioning system, reaches energy conservation and consumption reduction effects;
2) coating of the present invention emulsion used is aqueous polymer emulsion, and solid powder all belongs to inorganic materials, environment-protecting asepsis;
3) good, the strong adhesion of coating film elastic deformation performance of the present invention, not easy to crack, abrasion resistance good, easily construction;
4) China's fly ash is abundant, and cheap and easy to get, the present invention carries out high-value-use to flyash, and it is turned waste into wealth, and to a certain degree alleviates the environmental problem that flyash bulk deposition brings.
Accompanying drawing explanation
The infrared spectrogram of Fig. 1 coal ash zeolite sample
The XRD analysis spectrogram of Fig. 2 coal ash zeolite sample
The impact of Fig. 3 coal ash zeolite Different adding amount on coating heat-proof quality
Embodiment
Below by embodiment, the present invention is further illustrated:
Embodiment 1 coal ash zeolite preparation
Get the flyash of Taiyuan the first heat power plant and cross 200 mesh sieves, take 45g, add the NaOH solution of 450ml3mol/L to be mixed into muddy, stir after (300r/min) 2h at 100 ℃, it is standby that supernatant liquor is got in centrifugation; Add therein 7g NaAlO
2, stir after (2500r/min) 30min, by the silica-alumina gel transposition making in homogeneous reactor, after 120 ℃ of confined reaction 3h, centrifugation, and be solid to filtrate pH value with deionized water repetitive scrubbing and be about 8.5, the product after washing obtains coal ash zeolite in 100 ℃ after drying 24h.
Adopt the Frontier FT-IR type infrared spectrum analyser of U.S. Perkin Elmer company to analyze coal ash zeolite sample, result as shown in Figure 1.1002cm
-1near the absorption peak occurring is the asymmetrical stretching vibration bands of a spectrum of the inner tetrahedron Si-O-Si key of Si-Al molecular sieve (or Al-O-Al key), 680cm
-1place is the inner tetrahedron Si-O-Si(of Si-Al molecular sieve or Al-O-Al) symmetry stretching vibration peak, 560cm
-1place is the vibration absorption peak of some two tetra-atomic rings in the outside tetrahedron of Si-Al molecular sieve, 466cm
-1place is for Si-O(or Al-O) absorption peak that produces of flexural vibration.Hence one can see that, formed skeleton T-O-T(T=Si or Al in the synthetic product under test conditions), belong to two tetra-atomic ring structures, be typical zeolite molecules sieve structure.
Further the D8Advance type x-ray powder diffraction instrument of the German Bruker of employing company carries out crystal structure analysis to coal ash zeolite sample, and its XRD spectra as shown in Figure 2.Adopt XRD analysis software Jade5.0 to carry out qualitative analysis of phase to these data.This synthetic product has Zeolite4A(PDF43-1042) and the characteristic peak of zeolite X (PDF39-0218), peak shape rule, and intensity is large, and degree of agreement is very high.Therefore, can infer and in crystallized product, at least comprise Zeolite4A and two kinds of zeolites of X-type.
Also adopt the DRL-II type thermal conductivity measuring apparatus of Xiang Tan double happiness company to carry out thermal conductivity comparison to coal ash zeolite sieve sample and current conventional insulation filler fly ash float, diatomite, three's thermal conductivity is respectively 0.132W/ (mK), 0.176W/ (mK), 0.154W/ (mK), the thermal conductivity that can find out coal ash zeolite sieve sample is minimum, illustrates that to coal ash zeolite molecular sieve be a kind of well insulation filler material.
The heat insulating coatings preparation of embodiment 2～4 coal ash zeolite Different adding amounts
First by solid powder titanium dioxide 40g, coal ash zeolite (be respectively 3g, 5g, 10g account for solid powder 2%, 4%, 9%), Natvosol 0.5g, AMP-950.6g, P-190.1g mix; Then polymer emulsion 30g is mixed with water 25g, then add the solid powder mixing, with the mixing of mortar mixer rapid stirring, in the process stirring, add defoamer, after mixing, can use.Coating to coal ash zeolite molecular sieve Different adding amount carries out fundamental property test, and index is with reference to national standard, and test result is as shown in table 1, all meets the national standard of relevant industries.
The fundamental property test result of table 1 coal ash zeolite Different adding amount coating
Its heat preservation and insulation adopts " home-made contrivance after U.S. army mark improves " (Zhang Zhiqiang etc., the preparation of outer wall heat-insulating coating and heat-proof quality test, Chongqing Univ. of Architecture's journal, 2008,30(2): 132-134) detect.Coal ash zeolite molecular sieve Different adding amount affects experimental result as shown in Figure 3 to coating test plate (panel) heat-insulating property.In coating, mix heat insulation the play a part highly significant of coal ash zeolite molecular sieve to coating, wherein the larger effect of heat insulation of addition is better, addition is that the equilibrium temperature of 9% coating test plate (panel) has reduced by 12 ℃ than blank test plate (panel), it is 2% and 4% test plate (panel) that effect is better than zeolite addition, it is main because there is space coal ash zeolite molecular sieve inside, be full of air, make the thermal conductivity of molecular sieve very little.When coal ash zeolite molecular sieve addition is larger, caking phenomenon is serious, and extremely difficult dispersion in system, so the addition of selecting flyash molecular sieve in thermal insulating coating is 9% more suitable.
Have bibliographical information (Zhang Zhiqiang, the heat-proof quality of several functional stuffings contrast in thermal insulating coating, building energy conservation, 2009, (2): 44～46), with fly ash float, do filler, addition be coating total amount 9%～12% time, equilibrium temperature can reduce by 8～10 ℃; In the research of Peng Hong (preparation and the performance study of efficient outer wall heat-insulating coating, University Of Chongqing, Master's thesis, 2009), obtain, when diatomaceous volume is 15%, the equilibrium temperature of coating test plate (panel) and blank test plate (panel) have reduced by 6.5 ℃.
Can find out, coal ash zeolite molecular sieve coating has good heat preservation and insulation, and building energy conservation is played to good effect.
Although above embodiments of the invention are described in detail and are illustrated, should be noted that, we can make various changes and modifications above-described embodiment, but these do not depart from the scope that spirit of the present invention and appended claim are recorded.
Claims (8)
1. an external wall heat insulating coatings, it is characterized in that, component is by weight percentage: water 20%～30%, polymer emulsion 25%～35%, functional stuffing 2%～10%, titanium dioxide 35%～45%, thickening material 0.5%, wetting agent 0.5%～1%, dispersion agent 0.1%, defoamer 0.1～0.3%;
Described functional stuffing is coal ash zeolite, its preparation method is: flyash is crossed to 100～300 mesh sieves, by solid-to-liquid ratio 1: 3～15, flyash is joined in the NaOH solution of 1～7mol/L, stir 1～3h at 80～140 ℃, separate and get supernatant liquor and add while stirring NaAlO
2in regulator solution, Si/Al molar ratio is 1.5～4, proceeds in reactor after 80～140 ℃ of confined reaction 2～8h, separates to get solid phase and wash with water, to washing lotion pH value 8～9 post-dryings.
2. external wall heat insulating coatings according to claim 1, is characterized in that, described polymer emulsion is flexible benzene emulsion, flexible pure-acrylic emulsion or aqueous polyvinyl acetate emulsion.
3. external wall heat insulating coatings according to claim 2, is characterized in that, described flexible benzene emulsion is BASF S400F emulsion.
4. external wall heat insulating coatings according to claim 1, is characterized in that, described thickening material is Natvosol.
5. external wall heat insulating coatings according to claim 1, is characterized in that, described wetting agent is AMP-95.
6. external wall heat insulating coatings according to claim 1, is characterized in that, described dispersion agent is P-19.
7. external wall heat insulating coatings according to claim 1, is characterized in that, described defoamer is tributyl phosphate.
8. the preparation method of an external wall heat insulating coatings, step comprises: according to feed composition proportioning claimed in claim 1, polymer emulsion and water are mixed, then add the solid powders such as the titanium dioxide that mixed, functional stuffing, thickening material, wetting agent, dispersion agent, rapid stirring mixes, in whipping process, add defoamer, mix.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130657A (en) * | 2014-06-17 | 2014-11-05 | 安徽碧满塘建材有限公司 | Heat-insulation heat-preservation coating |
| CN104312332A (en) * | 2014-10-21 | 2015-01-28 | 平湖市心齐涂料科技有限公司 | Super-heat-insulation and reflection multifunctional heat-preservation coating |
| CN105399397A (en) * | 2015-12-09 | 2016-03-16 | 文登蓝岛建筑工程有限公司 | Building external wall fireproof and thermal insulation material and preparation method thereof |
| CN105482578A (en) * | 2015-12-31 | 2016-04-13 | 曲少春 | Novel building exterior wall paint and preparation method thereof |
| CN105907339A (en) * | 2016-06-30 | 2016-08-31 | 广东三和化工科技有限公司 | Water-based crack sealer and preparation method thereof |
| CN106189632A (en) * | 2016-08-05 | 2016-12-07 | 宁波江东仑斯福环保科技有限公司 | A kind of preparation method of fire-retardant water-retaining type thermal insulation coatings |
| CN106967363A (en) * | 2017-03-01 | 2017-07-21 | 福州外语外贸学院 | A kind of heat insulating coatings and preparation method thereof |
| CN107964296A (en) * | 2017-07-19 | 2018-04-27 | 岳阳东方雨虹防水技术有限责任公司 | A kind of high extension sound insulation bi-component waterborne water-repellent paint and preparation method thereof |
| CN109021637A (en) * | 2018-05-25 | 2018-12-18 | 繁昌县若木营造装饰工程有限公司 | A kind of environment-friendly building coating and preparation method thereof |
| CN109825135A (en) * | 2019-01-16 | 2019-05-31 | 深圳市欧科力科技有限公司 | A kind of preparation method of the compound insulating moulding coating of carbon dust modified zeolite |
| CN111187540A (en) * | 2020-02-11 | 2020-05-22 | 洛浦县赛迪建材有限公司 | Carbon fiber heating coating and preparation method thereof |
| CN111234628A (en) * | 2020-02-10 | 2020-06-05 | 华东交通大学理工学院 | Reflective heat-insulating coating for outer wall and preparation method thereof |
| CN114105555A (en) * | 2021-11-15 | 2022-03-01 | 南京益夫新材料科技有限公司 | Anti-crack mortar for coating building exterior wall and preparation process thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104130657A (en) * | 2014-06-17 | 2014-11-05 | 安徽碧满塘建材有限公司 | Heat-insulation heat-preservation coating |
| CN104312332A (en) * | 2014-10-21 | 2015-01-28 | 平湖市心齐涂料科技有限公司 | Super-heat-insulation and reflection multifunctional heat-preservation coating |
| CN105399397A (en) * | 2015-12-09 | 2016-03-16 | 文登蓝岛建筑工程有限公司 | Building external wall fireproof and thermal insulation material and preparation method thereof |
| CN105482578A (en) * | 2015-12-31 | 2016-04-13 | 曲少春 | Novel building exterior wall paint and preparation method thereof |
| CN105907339B (en) * | 2016-06-30 | 2017-10-24 | 广东三和化工科技有限公司 | A kind of aqueous joint trimming agent and preparation method thereof |
| CN105907339A (en) * | 2016-06-30 | 2016-08-31 | 广东三和化工科技有限公司 | Water-based crack sealer and preparation method thereof |
| CN106189632A (en) * | 2016-08-05 | 2016-12-07 | 宁波江东仑斯福环保科技有限公司 | A kind of preparation method of fire-retardant water-retaining type thermal insulation coatings |
| CN106967363A (en) * | 2017-03-01 | 2017-07-21 | 福州外语外贸学院 | A kind of heat insulating coatings and preparation method thereof |
| CN107964296A (en) * | 2017-07-19 | 2018-04-27 | 岳阳东方雨虹防水技术有限责任公司 | A kind of high extension sound insulation bi-component waterborne water-repellent paint and preparation method thereof |
| CN107964296B (en) * | 2017-07-19 | 2020-06-02 | 岳阳东方雨虹防水技术有限责任公司 | High-elongation sound-insulation bi-component water-based waterproof coating and preparation method thereof |
| CN109021637A (en) * | 2018-05-25 | 2018-12-18 | 繁昌县若木营造装饰工程有限公司 | A kind of environment-friendly building coating and preparation method thereof |
| CN109825135A (en) * | 2019-01-16 | 2019-05-31 | 深圳市欧科力科技有限公司 | A kind of preparation method of the compound insulating moulding coating of carbon dust modified zeolite |
| CN111234628A (en) * | 2020-02-10 | 2020-06-05 | 华东交通大学理工学院 | Reflective heat-insulating coating for outer wall and preparation method thereof |
| CN111187540A (en) * | 2020-02-11 | 2020-05-22 | 洛浦县赛迪建材有限公司 | Carbon fiber heating coating and preparation method thereof |
| CN114105555A (en) * | 2021-11-15 | 2022-03-01 | 南京益夫新材料科技有限公司 | Anti-crack mortar for coating building exterior wall and preparation process thereof |
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