CN102898901B - Fly ash building thermal-insulation and heat-preservation paint and preparation method thereof - Google Patents

Fly ash building thermal-insulation and heat-preservation paint and preparation method thereof Download PDF

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Publication number
CN102898901B
CN102898901B CN201210401735.6A CN201210401735A CN102898901B CN 102898901 B CN102898901 B CN 102898901B CN 201210401735 A CN201210401735 A CN 201210401735A CN 102898901 B CN102898901 B CN 102898901B
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China
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fly ash
parts
phase change
flyash
heat
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Expired - Fee Related
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CN201210401735.6A
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CN102898901A (en
Inventor
袁新强
张营堂
艾桃桃
蒋鹏
徐艺
革海银
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HANZHONG ZINC INDUSTRY Co Ltd
Shaanxi University of Technology
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HANZHONG ZINC INDUSTRY Co Ltd
Shaanxi University of Technology
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Abstract

The invention discloses a fly ash building thermal-insulation and heat-preservation paint and a preparation method thereof. The paint is developed by using alkaline styrene-acrylic emulsion and alkaline silica sol as compound film-forming materials, modified fly ash hollow microspheres as an aggregate, fly-ash-based paraffin compound phase-change material and glass microspheres as auxiliary aggregates, talcpowder as a filler, and lithopone as pigment, and by mixing the materials with a small amount of ammonia water, alcohol ester-12, tetramethyldisiloxane, isothiazolone preservative, polycarboxylic acid water reducer, cellulose water-retaining agent and the like. The paint not only helps to increase the utilization rate of fly ash directly to above 50 to 60% and can be used in place of cement mortar to address problems of difficulty in color matching, short storage as well as buildings failing to reach national energy-conservation standards in the application of fly ash in building thermal-insulation and heat-preservation paint as a thermal-insulation and heat-preservation aggregate.

Description

Fly ash building insulating mold coating and preparation method thereof
Technical field
The present invention relates to a kind of insulating mold coating, particularly a kind of fly ash building insulating mold coating and preparation method thereof.
Background technology
20 century 70s, worldwide energy dilemma, the exhaustion of environmental pollution and mineral wealth etc. has excited the research and development of utilization of fly ash, the problem that Ash Utilization utilization is very paid close attention to regard to become countries in the world government and experts and scholars always consumingly.According to pertinent data, show, China's year discharge flyash total inventory surpasses 1,000,000,000 tons, and is increasing with annual 1.2 hundred million tons of speed, and utilization ratio is less than 50% of year discharge.Relatively German utilization of fly ash rate 65%, French utilization of fly ash rate 75%, Japanese utilization of fly ash rate 100%, the utilization ratio of China's flyash is also very low, and major part is deposited in ash disposal area, contaminate environment not only, and expended a large amount of land resources.Therefore, China's Ash Utilization has urgency.
At present, the comprehensive Utilization Ways of flyash is mainly reflected in powder ash air-entrained concrete, coal powder concrete hollow brick, cement, flyash expanded perlite concrete insulation blocks, flyash concrete pavior brick, flyash brick, lytag and seven kinds of building material products such as concrete product and flyash concrete light cellular partition board and synthetic fertilizer, the Chemicals such as waste water, waste gas flocculation agent.
Because most of microballon in flyash has hollow, spherical morphology, heat-resisting, stable chemical nature and the feature such as inexpensive, the application potential in coating more and more comes into one's own, particularly the functional coating such as heat insulating, waterproof.For example, US 6872440 discloses a kind of heat-reflective coating material that contains flyash, and the people such as Li Wendan adopt TiO 2coated fly ash float is thermal insulating filling, develops the outer wall heat-insulating coating of low cost, high heat reflectivity, and US 6500560 discloses a kind of asphalt waterproofing material that contains flyash etc.
It should be noted that hollow beads in flyash partly can be used as the application of a kind of good heat preserving and insulating material in architectural heat insulation coating and can realize building energy conservation.Particularly, the one, flyash is utilized, and turns waste into wealth, and reduces environmental pollution and the injury to human body, reduces the pressure of the development of the national economy and ecotope, reduces the economic pressures that environmental improvement brings; The 2nd, the building coating of the hollow beads Part Development in powder application coal ash has incubation and thermal insulation function, reduces the air conditioner refrigerating heating energy consumption in building use procedure, belongs to building energy conservation product.At present, the research report that flyash hollow beads is applied in insulating mold coating for construction as thermal insulating filling is more; The research that flyash hollow beads is applied in architectural heat insulation coating as heat insulating aggregate is reported seldom, generally as filler, fills the space between heat insulating aggregate, makes the densification of filming, and improves sticking power.
Flyash is generally grey, has very strong coloring effect, as thermal insulating filling, is applied in insulating mold coating for construction and has color matching problem, and flyash has very strong water-absorbent, to prepare coating storage period short.The thermal conductivity of flyash is generally 0.25w/mk left and right, is applied in architectural heat insulation coating has national building energy conservation problem not up to standard as heat insulating aggregate.But flyash hollow beads is applied in architectural heat insulation coating and can makes the utilization ratio of flyash be increased to 50-60% as heat insulating aggregate, the architectural heat insulation coating performance capable of replacing cement mortar of preparing.
Summary of the invention
The object of the invention be to provide a kind of utilization of fly ash rate high, long without color matching problem, storage period, meet fly ash building insulating mold coating of national building energy conservation target and performance capable of replacing cement mortar and preparation method thereof.
In order to achieve the above object, fly ash building insulating mold coating of the present invention comprises by mass fraction: 400 parts of alkaline benzene emulsions, 140 parts of alkaline silica sols, 280-360 part modified coal ash hollow beads, 20-30 part fly ash base paraffin composite phase change material, 20-30 part glass microballon, 50-70 part talcum powder, 50-70 part zinc sulfide white, 16-20 part alcohol ester-12,8 parts of ammoniacal liquor, 4-10 part tetramethyl-silica alkane, 2-4 part isothiazole ketone sanitas, 2-4 part polycarboxylic acids dehydragent and 0.5-1 part and cellulose family water-holding agents.
Preparation method of the present invention is as follows:
1) first, under stirring action, by mass fraction, 8 parts of ammoniacal liquor, 16-20 part alcohol ester-12 are added in 400 parts of alkaline benzene emulsions, after stirring, add wherein again 140 parts of alkaline silica sols to obtain mixture;
2) then, in mixture, add 2-5 part tetramethyl-silica alkane, 2-4 part isothiazole ketone sanitas, 2-4 part polycarboxylic acids dehydragent and 0.5-1 part cellulose family water-holding agent, the even slurry that obtains of 280-360 part modified coal ash hollow beads, 50-70 part talcum powder and the pre-mixing of 50-70 part zinc sulfide white;
3) last, in slurry, add 2-5 part tetramethyl-silica alkane, 20-30 part fly ash base paraffin composite phase change material, 20-30 part glass microballon mixed after 10 minutes.
Described modified coal ash hollow beads is that the particle diameter that flyash drying, screening, magnetic separation, flotation and superficial bleaching sealing treatment are formed is that 40-100 order, thermal conductivity are less than 0.2w/mk, whiteness is that 20-40, near infrared reflectivity are 50-70%, water-intake rate 20-30%.
Described fly ash base paraffin composite phase change material is to take nuclear-shell emulsion polymerization that fly ash base paraffin is shell as core, acrylic ester monomer to go out that emulsion is spray-dried to be formed, its transformation temperature is 45-55 ℃, enthalpy of phase change is 20-60J/g, and to be wherein flyash and paraffin form in 60-70 ℃ of mechanical blending 1-2h with the mass ratio of 5:1-1:1 fly ash base paraffin;
Described acrylic ester monomer is one or more mixture of methyl methacrylate, β-dimethyl-aminoethylmethacrylate, butyl methacrylate, methyl acrylate, ethyl propenoate and butyl acrylate, in nuclear-shell emulsion polymerization system, water oil quality is than being 5:1-3:1, and initiator is oxidation-reduction system.
The coating that the present invention makes is thick, and production unit is high viscosity spiral ribbon mixer or band scraper frame type stirring machine.The coating of producing can make more than the direct utilization ratio of flyash reaches 50-60%, and performance capable of replacing cement mortar, alleviate flyash and be applied in the short and national building energy conservation problem not up to standard of the color matching problem, the storage period that exist in architectural heat insulation coating as heat insulating aggregate.
Accompanying drawing explanation
Fig. 1 is the formed paint film cross-section morphology of fly ash building insulating mold coating figure prepared by the present invention.
Embodiment
Embodiment 1:
1) first, under stirring action, by mass fraction, 8 parts of ammoniacal liquor, 16 parts of alcohol ester-12 are added in 400 parts of alkaline benzene emulsions, after stirring, add wherein again 140 parts of alkaline silica sols to obtain mixture;
2) then, in mixture, add 2 parts of tetramethyl-silica alkane, 2 portions of isothiazole ketone sanitass, 2 parts of polycarboxylic acids dehydragents and 0.5 part of cellulose family water-holding agent, 300 parts of modified coal ash hollow beads, 55 parts of talcum powder and 55 parts of even slurries that obtain of zinc sulfide white pre-mixing;
3) last, in slurry, add 2 parts of tetramethyl-silica alkane, 20 parts of fly ash base paraffin composite phase change materials, 20 parts of glass microballons mixed after 10 minutes.
Described modified coal ash hollow beads is that the particle diameter that flyash drying, screening, magnetic separation, flotation and superficial bleaching sealing treatment are formed is that 40-100 order, thermal conductivity are less than 0.2w/mk, whiteness is that 20-40, near infrared reflectivity are 50-70%, water-intake rate 20-30%.
Described fly ash base paraffin composite phase change material is to take nuclear-shell emulsion polymerization that fly ash base paraffin is shell as core, acrylic ester monomer to go out that emulsion is spray-dried to be formed, its transformation temperature is 45-55 ℃, enthalpy of phase change is 20-60J/g, and to be wherein flyash and paraffin form in 65 ℃ of mechanical blending 1-2h with the mass ratio of 1:1 fly ash base paraffin;
Described acrylic ester monomer is methyl methacrylate, and in nuclear-shell emulsion polymerization system, water oil quality is than being 5:1, and initiator is oxidation-reduction system.
Embodiment 2:
1) first, under stirring action, by mass fraction, 8 parts of ammoniacal liquor, 18 parts of alcohol ester-12 are added in 400 parts of alkaline benzene emulsions, after stirring, add wherein again 140 parts of alkaline silica sols to obtain mixture;
2) then, in mixture, add 5 parts of tetramethyl-silica alkane, 3 portions of isothiazole ketone sanitass, 2.5 parts of polycarboxylic acids dehydragents and 0.8 part of cellulose family water-holding agent, 280 parts of modified coal ash hollow beads, 70 parts of talcum powder and 65 parts of even slurries that obtain of zinc sulfide white pre-mixing;
3) last, in slurry, add 3 parts of tetramethyl-silica alkane, 25 parts of fly ash base paraffin composite phase change materials, 28 parts of glass microballons mixed after 10 minutes.
Described modified coal ash hollow beads is that the particle diameter that flyash drying, screening, magnetic separation, flotation and superficial bleaching sealing treatment are formed is that 40-100 order, thermal conductivity are less than 0.2w/mk, whiteness is that 20-40, near infrared reflectivity are 50-70%, water-intake rate 20-30%.
Described fly ash base paraffin composite phase change material is to take nuclear-shell emulsion polymerization that fly ash base paraffin is shell as core, acrylic ester monomer to go out that emulsion is spray-dried to be formed, its transformation temperature is 45-55 ℃, enthalpy of phase change is 20-60J/g, and to be wherein flyash and paraffin form in 63 ℃ of mechanical blending 1-2h with the mass ratio of 3:1 fly ash base paraffin;
Described acrylic ester monomer is β-dimethyl-aminoethylmethacrylate, and in nuclear-shell emulsion polymerization system, water oil quality is than being 3:1, and initiator is oxidation-reduction system.
Embodiment 3:
1) first, under stirring action, by mass fraction, 8 parts of ammoniacal liquor, 17 parts of alcohol ester-12 are added in 400 parts of alkaline benzene emulsions, after stirring, add wherein again 140 parts of alkaline silica sols to obtain mixture;
2) then, in mixture, add 3 parts of tetramethyl-silica alkane, 4 portions of isothiazole ketone sanitass, 3.5 parts of polycarboxylic acids dehydragents and 0.6 part of cellulose family water-holding agent, 320 parts of modified coal ash hollow beads, 50 parts of talcum powder and 70 parts of even slurries that obtain of zinc sulfide white pre-mixing;
3) last, in slurry, add 5 parts of tetramethyl-silica alkane, 28 parts of fly ash base paraffin composite phase change materials, 23 parts of glass microballons mixed after 10 minutes.
Described modified coal ash hollow beads is that the particle diameter that flyash drying, screening, magnetic separation, flotation and superficial bleaching sealing treatment are formed is that 40-100 order, thermal conductivity are less than 0.2w/mk, whiteness is that 20-40, near infrared reflectivity are 50-70%, water-intake rate 20-30%.
Described fly ash base paraffin composite phase change material is to take nuclear-shell emulsion polymerization that fly ash base paraffin is shell as core, acrylic ester monomer to go out that emulsion is spray-dried to be formed, its transformation temperature is 45-55 ℃, enthalpy of phase change is 20-60J/g, and to be wherein flyash and paraffin form in 60 ℃ of mechanical blending 1-2h with the mass ratio of 5:1 fly ash base paraffin;
Described acrylic ester monomer is butyl methacrylate, and in nuclear-shell emulsion polymerization system, water oil quality is than being 4:1, and initiator is oxidation-reduction system.
Embodiment 4:
1) first, under stirring action, by mass fraction, 8 parts of ammoniacal liquor, 20 parts of alcohol ester-12 are added in 400 parts of alkaline benzene emulsions, after stirring, add wherein again 140 parts of alkaline silica sols to obtain mixture;
2) then, in mixture, add 4 parts of tetramethyl-silica alkane, 2.5 portions of isothiazole ketone sanitass, 3 parts of polycarboxylic acids dehydragents and 0.9 part of cellulose family water-holding agent, 360 parts of modified coal ash hollow beads, 65 parts of talcum powder and 50 parts of even slurries that obtain of zinc sulfide white pre-mixing;
3) last, in slurry, add 4 parts of tetramethyl-silica alkane, 23 parts of fly ash base paraffin composite phase change materials, 25 parts of glass microballons mixed after 10 minutes.
Described modified coal ash hollow beads is that the particle diameter that flyash drying, screening, magnetic separation, flotation and superficial bleaching sealing treatment are formed is that 40-100 order, thermal conductivity are less than 0.2w/mk, whiteness is that 20-40, near infrared reflectivity are 50-70%, water-intake rate 20-30%.
Described fly ash base paraffin composite phase change material is to take nuclear-shell emulsion polymerization that fly ash base paraffin is shell as core, acrylic ester monomer to go out that emulsion is spray-dried to be formed, its transformation temperature is 45-55 ℃, enthalpy of phase change is 20-60J/g, and to be wherein flyash and paraffin form in 68 ℃ of mechanical blending 1-2h with the mass ratio of 2:1 fly ash base paraffin;
Described acrylic ester monomer is the mixture of methyl acrylate and ethyl propenoate, and in nuclear-shell emulsion polymerization system, water oil quality is than being 3.5:1, and initiator is oxidation-reduction system.
Embodiment 5:
1) first, under stirring action, by mass fraction, 8 parts of ammoniacal liquor, 19 parts of alcohol ester-12 are added in 400 parts of alkaline benzene emulsions, after stirring, add wherein again 140 parts of alkaline silica sols to obtain mixture;
2) then, in mixture, add 3 parts of tetramethyl-silica alkane, 3.5 portions of isothiazole ketone sanitass, 4 parts of polycarboxylic acids dehydragents and 1 part of cellulose family water-holding agent, 340 parts of modified coal ash hollow beads, 60 parts of talcum powder and 60 parts of even slurries that obtain of zinc sulfide white pre-mixing;
3) last, in slurry, add 3 parts of tetramethyl-silica alkane, 30 parts of fly ash base paraffin composite phase change materials, 30 parts of glass microballons mixed after 10 minutes.
Described modified coal ash hollow beads is that the particle diameter that flyash drying, screening, magnetic separation, flotation and superficial bleaching sealing treatment are formed is that 40-100 order, thermal conductivity are less than 0.2w/mk, whiteness is that 20-40, near infrared reflectivity are 50-70%, water-intake rate 20-30%.
Described fly ash base paraffin composite phase change material is to take nuclear-shell emulsion polymerization that fly ash base paraffin is shell as core, acrylic ester monomer to go out that emulsion is spray-dried to be formed, its transformation temperature is 45-55 ℃, enthalpy of phase change is 20-60J/g, and to be wherein flyash and paraffin form in 70 ℃ of mechanical blending 1-2h with the mass ratio of 4:1 fly ash base paraffin;
Described acrylic ester monomer is the mixture of methyl methacrylate, ethyl propenoate and butyl acrylate, and in nuclear-shell emulsion polymerization system, water oil quality is than being 4.5:1, and initiator is oxidation-reduction system.
The fly ash building hardness of paint film that insulating mold coating forms of making by preparation method of the present invention is greater than 3H, 0 grade of sticking power, and ultimate compression strength is greater than 12Mpa, smooth surface, referring to Fig. 1, paint film inside is vesicular structure, the heat insulation temperature difference is greater than 15 ℃, and thermal conductivity is less than 0.15w/mk.

Claims (4)

1. a fly ash building insulating mold coating, is characterized in that: by mass fraction, comprise: 400 parts of alkaline benzene emulsions, 140 parts of alkaline silica sols, 280-360 part modified coal ash hollow beads, 20-30 part fly ash base paraffin composite phase change material, 20-30 part glass microballon, 50-70 part talcum powder, 50-70 part zinc sulfide white, 16-20 part alcohol ester-12,8 parts of ammoniacal liquor, 4-10 part tetramethyl-silica alkane, 2-4 part isothiazole ketone sanitas, 2-4 part polycarboxylic acids dehydragent and 0.5-1 part and cellulose family water-holding agents.
2. a preparation method for fly ash building insulating mold coating, is characterized in that:
1) first, under stirring action, by mass fraction, 8 parts of ammoniacal liquor, 16-20 part alcohol ester-12 are added in 400 parts of alkaline benzene emulsions, after stirring, add wherein again 140 parts of alkaline silica sols to obtain mixture;
2) then, in mixture, add 2-5 part tetramethyl-silica alkane, 2-4 part isothiazole ketone sanitas, 2-4 part polycarboxylic acids dehydragent and 0.5-1 part cellulose family water-holding agent, the even slurry that obtains of 280-360 part modified coal ash hollow beads, 50-70 part talcum powder and the pre-mixing of 50-70 part zinc sulfide white;
3) last, in slurry, add 2-5 part tetramethyl-silica alkane, 20-30 part fly ash base paraffin composite phase change material, 20-30 part glass microballon mixed after 10 minutes.
3. the preparation method of fly ash building insulating mold coating according to claim 2, it is characterized in that: described modified coal ash hollow beads is that the particle diameter that flyash drying, screening, magnetic separation, flotation and superficial bleaching sealing treatment are formed is that 40-100 order, thermal conductivity are less than 0.2w/mk, whiteness is that 20-40, near infrared reflectivity are 50-70%, water-intake rate 20-30%.
4. the preparation method of fly ash building insulating mold coating according to claim 2, it is characterized in that: described fly ash base paraffin composite phase change material is to take nuclear-shell emulsion polymerization that fly ash base paraffin is shell as core, acrylic ester monomer to go out that emulsion is spray-dried to be formed, its transformation temperature is 45-55 ℃, enthalpy of phase change is 20-60J/g, and to be wherein flyash and paraffin form in 60-70 ℃ of mechanical blending 1-2h with the mass ratio of 5:1-1:1 fly ash base paraffin;
Described acrylic ester monomer is one or more mixture of methyl methacrylate, β-dimethyl-aminoethylmethacrylate, butyl methacrylate, methyl acrylate, ethyl propenoate and butyl acrylate, in nuclear-shell emulsion polymerization system, water oil quality is than being 5:1-3:1, and initiator is oxidation-reduction system.
CN201210401735.6A 2012-10-19 2012-10-19 Fly ash building thermal-insulation and heat-preservation paint and preparation method thereof Expired - Fee Related CN102898901B (en)

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CN102925114A (en) * 2012-11-02 2013-02-13 山西大学 Fly ash phase change microbead, preparation method thereof and application
CN103224680B (en) * 2013-04-17 2015-04-15 陕西理工学院 Lightweight decorative acrylic sheet and its preparation method
CN106118261A (en) * 2016-06-27 2016-11-16 董晓 A kind of preparation method of waterproof ventilating type external-wall heat-insulation material organic interface agent
CN108558366A (en) * 2018-01-26 2018-09-21 中北大学 A kind of preparation method of high-efficiency water-absorbing water conservation pulverized coal-ash-based porous material

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CN1124756A (en) * 1994-12-15 1996-06-19 王春生 Dry-powder insulating mold coating and preparing process thereof
CN101709160A (en) * 2009-12-16 2010-05-19 东北大学 Inorganic antibacterial coating with titaniferous blast furnace slag and preparation method thereof
CN102925114A (en) * 2012-11-02 2013-02-13 山西大学 Fly ash phase change microbead, preparation method thereof and application

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