CN106590118A - Heat insulation and heat preservation coating for building external wall and preparation method thereof - Google Patents

Heat insulation and heat preservation coating for building external wall and preparation method thereof Download PDF

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Publication number
CN106590118A
CN106590118A CN201611220249.9A CN201611220249A CN106590118A CN 106590118 A CN106590118 A CN 106590118A CN 201611220249 A CN201611220249 A CN 201611220249A CN 106590118 A CN106590118 A CN 106590118A
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parts
coating
emulsion
heat
weight
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陈明贤
谢彤
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Binyang County Guangxi Rong Liang Novel Material Science And Technology Ltd
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Binyang County Guangxi Rong Liang Novel Material Science And Technology Ltd
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Abstract

The invention discloses a heat insulation and heat preservation coating for a building external wall. The coating is prepared from 40-50 parts of emulsion, 1-2 parts of N-hydroxymethyl acrylamide, 6-9 parts of fumed silica, 4-6 parts of water, 1-2 parts of a titanate coupling agent, 7-14 parts of auxiliaries, 7-9 parts of acetic acid n-butyl ester, 9-12 parts of expanded perlite and 5-10 parts of nano-calcium carbonate, wherein the emulsion is mixed liquid prepared from A-102 silicone-acrylate emulsion and A-99 pure acrylic emulsion according to the weight ratio of 1.5:1, and the auxiliaries are composed of, by weight, 1-2 parts of a sterilizing and mildew preventing agent, 1-3 parts of a leveling agent, 1-3 parts of a thickening agent and 4-6 parts of a film forming aid. The coating has the advantages of being high in chemical resistance, good in weather resistance and heat insulation and heat preservation effect, high in glossiness, long in coating film life and the like.

Description

A kind of heat insulating coatings used for building exterior wall and preparation method thereof
Technical field
The present invention relates to a kind of heat insulating coatings, particularly a kind of heat insulating coatings used for building exterior wall and its preparation side Method, belongs to Chemical composition that and its preparing technical field.
Background technology
Due to world industry increasingly destruction of the flourishing and mankind to the Nature, it is each that energy-saving work has caused the world The concern and attention of state, the building energy consumption of China accounts for more than the 30% of mankind's energy resource consumption, improve building heat preserving heat-proof quality, Improve building using function, it is energy-saving be to build selection at present to design another significant consideration.In building coating field Developing goal both domestic and external is also to develop towards efficient, save energy and resource, innoxious, pollution-free direction.In recent years develop Buildings Heat Reflection insulating moulding coating not only there is dicoration, and with heat-reflecting heat-insulating effect, apply in building roof and interior Wall face has blocking and reflex well to light and heat, and big sunlight and ambient heat can be resisted during the broiling summer to building The baking of thing, significantly reduces indoor temperature, and hot wall penetration loss is reduced in the winter time, reaches effect cool in summer and warm in winter, to building section There can be certain contribution.
Building energy conservation is one of emphasis of China's energy conservation, and external wall outer insulation has become the major product of building energy conservation.For Area during Thermal Design based on being incubated, such as severe cold area and cold district, external wall outer insulation not only rationally, and is suitable for, Development is very fast.And for typically only considering heat-insulated hot summer and warm winter region during Thermal Design, or during Thermal Design based on heat-insulated Hot-summer and cold-winter area, there is further perfect space in current some external wall outer insulations.It is special for the weather of different regions Point, reasonable selection and using various heat insulating coatings constitutes compound system, has not only been incubated but also heat-insulated, reaches indoor thermal environment easypro Accommodate energy-saving purpose.In terms of heat insulating coatings, relevant document is retrieved as follows:
1st, Chinese patent, denomination of invention:Elastic heat-insulation fluorocarbon coating and preparation method thereof, using method;Application number: 201110411371.5 ;Applicant:Shenzhen Guangtian Environmental Coating Co., Ltd;Summary:A kind of elastic heat-insulation fluorocarbon coating, It is made up of host and curing agent, its host is made up of the component of following weight proportion:Fluororesin 55-65, dispersant 0.5-1.5, Defoamer 0.2-0.4, anti-settling agent 0.3-0.5, levelling agent 0.3-0.5, titanium dioxide 15-20, hollow glass micropearl 4-8, hollow height Molecularly Imprinted Polymer l-1.5, mixed solvent 15-20;Its curing agent is made up of the component of following weight proportion:E405-80T90, second Acid butyl ester 5, butyl glycol ether acetic acid esters 5;And Jing value and solidification of the weight proportion of the host and curing agent according to fluororesin The NCO content of agent is calculated, and takes OH/NCO=1:(1.05-1.15).The elastic heat-insulation fluorocarbon coating has outstanding weatherability, and With excellent anti-staining, abrasion resistance and excellent decoration performance etc., and the coating has good normal temperature and low temperature Elasticity, can resist blind crack, simultaneously because the raising of heat insulating effect, contributes to transporting and dispose.
2nd, Chinese patent, denomination of invention:Heat-reflecting insulating coating for outer surface of building and preparation method thereof;Application number: 201010044807.7;Applicant:Fujian Ounuo Paint Technology Co., Ltd.;Summary:The invention discloses a kind of outer surface of building With heat-reflecting insulating coating, it includes following component:Aqueous soap-free polymerization copolymer emulsion, titanium dioxide, boron-containing glass microballon, ceramics Powder, filler, wetting agent, dispersant, thickener, defoamer, coalescents, propane diols, water, and the preparation method of the coating. The heat-reflecting insulating coating for outer surface of building that the present invention is provided is coated on building surface and not only increases exterior wall to sunlight heat Reflecting properties, reduce exterior wall to the thermal-radiating absorption of sunshine, so as to reduce the table temperature of building, reached heat-insulated The effect of energy-conservation, and the coating is using water as solvent, does not conform to that heavy metal, nontoxic pollution-free, construction technology be simple and convenient, sexual valence It is a kind of environmental friend type multifunction energy-saving coatings than high.
3rd, Chinese patent, denomination of invention:A kind of water-soluble colorful insulation coating and preparation method thereof;Application number: 2009l0248588.1;Applicant:The Maritime Affairs University Of Dalian;Summary:A kind of water-soluble colorful insulation coating and preparation method thereof.Be with Acrylic emulsion (25-45%), colorful hollow ceramic microspheres (50-15%), precipitated calcium carbonate (50-20%), titanium dioxide (10- 25%), dispersant (0.5-1.5%), thickener (0.5-1.2%), defoamer (0.5-0.8%) and water (20-40%) are original Material, by acrylic emulsion, water, titanium dioxide, precipitated calcium carbonate mixing, dispersed with stirring, Jing skin grinder barrelings are well mixed, colorful sky Heart ceramic fine bead is dispersed through after agent wetting, is added to by several times in emulsion, is added defoamer, thickener and is well mixed and forms.This The paint colors of invention do not conform to the volatile organic solvents such as benzene, formaldehyde from colorful hollow ceramic fine bead is contained, and have concurrently heat-insulated Heat preservation energy-saving and dicoration, are conducive to environmental protection, and with prominent heat-insulating property and unfading, with obvious environment, Social benefit.
4th, Chinese patent, denomination of invention:Aqueous flame-retardant and thermal-insulated coating and preparation method thereof;Application number: 200910l12619.0;Applicant:Xiamen University;Summary:Aqueous flame-retardant and thermal-insulated coating and preparation method thereof, is related to one kind A kind of building coating, there is provided building thermal-insulating coating for integrating fire resistance, heat-insulating property and decoration function.Coating is by breast Liquid, fire retardant, titanium dioxide, hollow glass micropearl, water and auxiliary agent composition, it is emulsion 35~40, fire-retardant that each component press mass fraction Agent 20~30, titanium dioxide 15~20, hollow glass micropearl 5~10,19~2l of water, 11~l5 of auxiliary agent.With various mineral-types, phosphorus Class, nitrogen based flame retardant, using the synergy between different flame retardant, can reach flame retardant effect in the case where consumption is less, The physical property of paint coatings is not affected simultaneously;It is another that pyroconductivity, thermal convection current and heat radiation are reduced by glass microballoon, protected Warm nature energy, coating layer thickness is about 1mm can just reach good heat insulation effect.The insulation of coating and fire resistance are presented as heat conduction system Number≤0.090W/ (mk), oxygen index (OI) >=28.0%.
But prepare a kind of heat-insulated with lightweight, high fire resisting, high durable, environmental protection, non-aging, long-lasting external thermal insulation Coating, and then the purpose of building energy conservation is reached, also without very ripe technology, therefore at present people also try in constantly research Test.
The content of the invention
It is an object of the invention to provide a kind of heat insulating coatings used for building exterior wall and preparation method thereof, the coating has heat-insulated High insulating effect, high durable, environmental protection, non-aging, long-acting effect.
What the present invention was realized in:
Heat insulating coatings used for building exterior wall, make the coating and are made up of the raw material of following parts by weight:
40~50 parts of emulsion;
1~2 part of N hydroxymethyl acrylamide;
6~9 parts of aerosil;
4~6 parts of water;
1~2 part of titanate coupling agent;
7~14 parts of auxiliary agent;
7~9 parts of n-butyl acetate;
9~12 parts of expanded perlite;
5~10 parts of nano-calcium carbonate.
Described emulsion is the mixed liquor of silicone acrylic emulsion and pure-acrylic emulsion, and both weight ratios are followed successively by 1.5:1;Wherein, The A-102 products that silicone acrylic emulsion is produced using Shanghai Zhen Zhou chemistry painting industries Co., Ltd;Pure-acrylic emulsion uses Shanghai and shakes continent The A-99 products of chemistry painting industry Co., Ltd production. A-102 silicone acrylic emulsions system's acrylate and organosilicon material using modern high technology technology copolymerization anionic emulsion, For milky white micro-strip blue light color liquid, 48 ± 1wt% of solid content, pH are 7-9, and viscosity is 1000-3000mpa.s, vitrification point Tg For 30 DEG C, 25 DEG C of MFT, the not stratified not breakdowns of emulsion of 48h.The emulsion has tiny particle diameter and excellent freeze-thaw stability Property, mechanical stability and Calcium ion stability, its film has the excellent resistance to water of machine, alkali resistance, adhesive force and closed performance, and And with prominent pollution resistance, can be applicable to high-grade exterior wall latex paint, high-grade seal coat, true mineral varnish cover agent, water-based encarpus tile Paint.The pure third building emulsion systems of A-99 are translucent milky white in blue light with the anionic emulsion of methacrylic acid monomer copolymerization Color liquid, solid content is 50 ± 1wt%, and 25 DEG C of pH is 7-8.5, and viscosity is 1000-3000mpa.s, and vitrification point Tg is 30 DEG C, 20 DEG C of MFT, in mechanical stability(2000r/min, stirs 45min)Under conditions of, do not flocculate, not breakdown of emulsion, It is not stratified.Pure third building emulsions of A-99 have particle diameter tiny, and viscosity is suitable, and paint film is hard, weather-proof, alkaline-resisting, scrub resistance is good, glue Knot power and adhesive force are strong, the features such as have good color stuffing bearing capacity, the color developing and various good stabilities of pigment, can be applicable to High-weatherability exterior wall latex paint, interior wall high-performance zero diopter to high gloss emulsion paint, cement tile paint.
Described N hydroxymethyl acrylamide, is white crystalline powder, and 74~75 DEG C of fusing point, soluble in water, ethanol is molten In fatty acid ester, insoluble in hydrophobic solvents such as hydrocarbon, halogenated hydrocarbons.In the presence of the aqueous solution has acid, heating can be aggregated into rapidly Insoluble resin.Due to the vinyl containing polymerization in molecular structure and the methylol of condensation performance, therefore gather line style Compound crosslinking is maximally efficient.If with acrylic ester monomer combined polymerization, methylol is introduced into, only heats i.e. cross-linking.
Aerosil(It is commonly called as fume colloidal silica)It is using a kind of obtained in chlorosilane Jing oxyhydrogen flame pyrohydrolysises Finely, special amorphous powder body material, its product purity is high, and Average primary particle diameter is about 7 ~ 40nm, and specific surface area 50 ~ 380m2/ g, SiO2Content >=99.8%.It is a kind of multi-functional additive, in being widely used in coating, can play thickening, touch Change, delustring etc. are acted on.In the present invention, aerosil is used as thixotropic agent, because generally in work progress, due to The solvent volatilization of coating edge is very fast, causes surface tension uneven, liquid is moved to edge, and network of silica The movement of liquid can effectively be prevented and webbing is formed, while also preventing liquid sagging phenomenon in the curing process, painting is made Layer is uniform.Meanwhile, aerosil due to can form hydrogen bond and the middle low-shear viscosity in raising system, so as to play thickening Effect. therefore, application of the aerosil in oleaginous system is widely.Used in coating after thixotropic agent, in construction High-rate of shear under have compared with low-viscosity, contribute to coating flow and be easy to construction;Low sheraing speed before construction and afterwards Have under rate compared with high viscosity, pigment sedimentation and wet film sagging can be prevented.In coating system, due to the small particle of aerosil And high surface energy, they can adsorb on the surface of fine paint powders, and form a top layer in powder surface, improve dividing for powder Scattered property, therefore can use as dispersion aids.In same coating system, when adding aerosil substantially can shorten dispersion Between, improve production efficiency.Aerosil can also improve the weatherability of coating, resistance to marring, improve coating and base material it Between bond strength.Meanwhile, aerosil has extremely strong ultraviolet radiation absorption, infrared light reflection characteristic, doses in coating The middle ageing resistace that can improve coating.
Described titanate coupling agent is monoalkoxy pyrophosphoric acid ester type, it is adaptable to the higher filler of water capacity of the present invention System, such as mica powder, talcum powder, in this system, are coupled except the hydroxyl reaction on monoalkoxy and filler surface is formed Outward, pyrophosphoric acid ester group can also be decomposed to form it is phosphate-based, with reference to a part of water.Apply in soluble polyurethane coating industry, Paint filler amount can be increased, dispersive property improves, with result of prevention, can prevent growing dim, and paint film intensity is improved, and color and luster is fresh It is gorgeous, also with dry characteristic is urged, baking temperature can also be reduced to baking finish and shortens baking time.Titanate coupling agent passes through it Alkoxyl directly carries out chemical action and is coupled with the micro carboxyl that adsorbed of filler surface or hydroxyl.Pyrophosphoryl epoxide also hinders Combustion, antirust, and strengthen the performance of bonding.In this coating, the R bases of titanate coupling agent can be anti-with the hydroxyl of inorganic filler surface Should, the monolayer of coupling agent is formed, so as to play chemical coupling effect.Long-chain moiety in titanate coupling agent molecule, rises To the entanglement effect with polymer molecule and compatibility, improve the impact strength of material, reduce the surface energy of filler, system it is glutinous Degree is significantly reduced, and with good lubricity and rheological property.
Described auxiliary agent by the biocide mildewcide of 1~2 weight portion, the levelling agent of 1~3 weight portion, 1~3 weight portion increasing Thick dose and the coalescents composition of 4~6 weight portions;Described biocide mildewcide is double thiocarbamates or pentachlorophenol; Described levelling agent is acetylbutyrylcellulose;Described thickener is hydroxyethyl cellulose;Described coalescents are 2,2, 4- trimethyl -1,3- pentanediol mono isobutyrates.Described biocide mildewcide is double thiocarbamates or pentachlorophenol.Apply In material add biocide mildewcide after by hinder thalline breathing, or interference pathogen biosynthesis, destruction cell membrane synthesis, Synthesis of obstruction class ester etc. reaches the purpose of fungus and mildew resistance.Described levelling agent is acetylbutyrylcellulose, and it has excellent anti- It is wet, the performance such as ultraviolet resistance, cold-resistant, flexible, transparent, electric insulation, and can have preferably compatible with resin and higher boiling plasticizer Property, moreover it is possible to do stripping lacquer, insulated paint, weather-proof high-grade paint and staple fibre.Described thickener is hydroxyethyl cellulose, and it is It is a kind of white or faint yellow, tasteless, nontoxic threadiness or pulverulent solids, with thickening, suspension, bonding, emulsification, dispersion, Keep the performance such as moisture and protecting colloid.Described coalescents are 2,2,4- trimethyl -1, and 3- pentanediol mono isobutyrates should The hydrolytic stability of material is very good, when adding in emulsion paint, is absorbed on emulsion particle, softens particle and in japanning Preferably fusion can be caused.The coalescents can effectively coalescence emulsion particle, easily mix in emulsion, and in higher content Under do not affect the stability of coating, in addition, the strong solvent of the auxiliary agent or emulsion polymer.
In the present invention, described n-butyl acetate is used as solvent, is the liquid that water white transparency has happy fruital smell Body.N-butyl acetate is a kind of excellent organic solvent, to ethyl cellulose, acetylbutyrylcellulose, polystyrene, methyl-prop Olefin(e) acid resin, chlorinated rubber and various natural gums have preferable solubility property.And in the present invention, act as:One is Film forming matter in dissolution of coatings;Two bin stabilities for being to increase coating;Three is to give coating good workability.
The present invention adopts the expanded perlite of hollow bore configuration, and its particle diameter is between l0-l00 nanometers.Expanded pearlite Rock is a kind of with high performance inorganic light weight heat-insulating material, the little (70~250kg/m of density3), the use of temperature range is -200 ~800 DEG C, thermal conductivity factor of the temperature in the range of 0~l00 DEG C is 0.024~0.058w/ (mk), with low thermal conductivity, nothing It is malicious, tasteless, be stale-proof, fire-retardant, sound-absorbing advantage, can be used as high-efficiency insulated, cold insulation packing material.
A kind of heat insulating coatings used for building exterior wall of the present invention, its production method is comprised the following steps:
(1) sequentially add the water of formula ratio and the auxiliary agent of formula ratio in a mixer, start stirring, rotating speed be 1000-1200 turn/ Point, 5-10min is disperseed at a high speed;
(2) titanate coupling agent is dissolved in 2ml toluene solvants by weight, by formula ratio aerosil, expansion Perlite and nano-calcium carbonate are added in blender, start stirring, and rotating speed is 1000-1200 rev/min, is warmed up to 70 DEG C -80 DEG C, Then titanate coupling agent solution is uniformly added into using dripping method, drop rate control was dripped at 1 minute 1, and time for adding is 10- 20min;Continue to stir 20-30min after adding, make expanded perlite and aerosil particle to coat last layer metatitanic acid Ester coupling agent;
(3) emulsion of formula ratio, N hydroxymethyl acrylamide and n-butyl acetate are finally put into, rotating speed is 500-600 rev/min, Low speed disperses 5-10min.
Applicant's statement first:We are an enterprises for researching and producing mildewproof waterproof coating used for building exterior wall, in the past few years Many products are made that in terms of research and development building external paint, the product having at present passes through test and checks, i.e., To put goods on the market, the several patents that have applied on the same day are all our own scientific achievements, such as《A kind of flame retardant type used for building exterior wall Water-repellent paint and its production method》With《A kind of mildewproof waterproof coating used for building exterior wall and its production method》《A kind of external wall With heat insulating coatings and preparation method thereof》Some formulas have similar part with technique, but are our series of products, apply The purpose of patent is, in order to protect our series of products, to be not configured to other purposes.
Compared with prior art, the positive effect of the present invention is:
1st, the thermal insulation coatings film forming matter used for building exterior wall that the present invention is produced in silicone acrylic emulsion and pure-acrylic emulsion due to adding N hydroxymethyl acrylamide, aerosil, titanate coupling agent, auxiliary agent, n-butyl acetate, heat-insulating heat-preserving material and nanometer After the materials such as calcium carbonate, good chemical crosslinking effect can be played, so that the adhesive strength of film forming matter strengthens, stretches by force Degree is big, and heat-insulating property is improved, and extends the coating life-span.
2nd, add expanded perlite as heat-insulating heat-preserving material, the low thermal conductivity of expanded perlite, extraordinary is played to building Heat insulation and preservation effect.The heat-insulating heat-preserving material reaches heat-insulated purpose by reflected sunlight, can effectively suppress and shield infrared The radiant heat of line and the conduction of heat, so as to ensure the heat preservation and insulation of coating of the present invention.The heat reflectivity of coating of the present invention Up to 90%, thermal conductivity factor is 0.034W/m.K, can effectively suppress the sun and ultrared radiant heat and conduction heat, heat-insulated suppression Efficiency can keep the heat in 70% object space not to be lost in up to 90% or so.
3rd, heat insulating coatings have extensive social benefit to existing residential building reducing energy consumption.Can intercept too in summer Sun radiation more than 89%, can suppress the absorption of most solar heats, and indoor infrared heat more than 85% can be reflected in the winter time so that Indoor heat will not be lost in easily.It is therefore not necessary to open air-conditioning for a long time, indoor suitable temperature also can be well kept, Make room cool in summer and warm in winter.Due to the feature of heat insulating coatings, building surface sunshine is reflexed in air, make building Surface does not absorb heat energy, to reducing urban heat land effect, is significant.
Specific embodiment
Embodiment 1
First by weight by 40 parts of emulsions(The mixed liquor of A-102 silicone acrylic emulsions and A-99 pure-acrylic emulsions, both weight portions Number ratio is followed successively by 1.5:1), 1 part of N hydroxymethyl acrylamide, 6 parts of aerosils, 4 parts of water, 1 part of titanate coupling agent (monoalkoxy Pyrophosphate Type Yitanate Coupling Agent), 7 parts of auxiliary agents(1 part of double thiocarbamate, 1 part of acetate butyrate fiber Element, 1 part of hydroxyethyl cellulose, 4 part 2,2,4- trimethyl -1,3- pentanediol mono isobutyrates), 7 parts of n-butyl acetates, 9 parts are swollen Swollen perlite, 5 parts of nano-calcium carbonates, is got the raw materials ready.
A kind of heat insulating coatings used for building exterior wall, its production method is comprised the following steps:
(1) sequentially add the water of formula ratio and the auxiliary agent of formula ratio in a mixer, start stirring, rotating speed be 1000-1200 turn/ Point, 5-10min is disperseed at a high speed;
(2) titanate coupling agent is dissolved in 2ml toluene solvants by weight, by formula ratio aerosil, expansion Perlite and nano-calcium carbonate are added in blender, start stirring, and rotating speed is 1000-1200 rev/min, is warmed up to 70 DEG C -80 DEG C, Then titanate coupling agent solution is uniformly added into using dripping method, drop rate control was dripped at 1 minute 1, and time for adding is 10- 20min;Continue to stir 20-30min after adding, make expanded perlite and aerosil particle to coat last layer metatitanic acid Ester coupling agent;
(3) emulsion of formula ratio, N hydroxymethyl acrylamide and n-butyl acetate are finally put into, rotating speed is 500-600 rev/min, Low speed disperses 5-10min.
Embodiment 2
First by weight by 45 parts of emulsions(The mixed liquor of A-102 silicone acrylic emulsions and A-99 pure-acrylic emulsions, both weight portions Number ratio is followed successively by 1.5:1), 1.5 parts of N hydroxymethyl acrylamides, 7 parts of aerosils, 5 parts of water, 1.5 parts of titanate esters idols Connection agent (monoalkoxy Pyrophosphate Type Yitanate Coupling Agent), 12 parts of auxiliary agents(1.5 parts of pentachlorophenols, 2 parts of acetate butyrate fibers Element, 2 parts of hydroxyethyl celluloses, 5 part 2,2,4- trimethyl -1,3- pentanediol mono isobutyrates), 8 parts of n-butyl acetates, 10 parts Expanded perlite, 8 parts of nano-calcium carbonates, is got the raw materials ready.
A kind of heat insulating coatings used for building exterior wall, its production method is comprised the following steps:
(1) sequentially add the water of formula ratio and the auxiliary agent of formula ratio in a mixer, start stirring, rotating speed be 1000-1200 turn/ Point, 5-10min is disperseed at a high speed;
(2) titanate coupling agent is dissolved in 2ml toluene solvants by weight, by formula ratio aerosil, expansion Perlite and nano-calcium carbonate are added in blender, start stirring, and rotating speed is 1000-1200 rev/min, is warmed up to 70 DEG C -80 DEG C, Then titanate coupling agent solution is uniformly added into using dripping method, drop rate control was dripped at 1 minute 1, and time for adding is 10- 20min;Continue to stir 20-30min after adding, make expanded perlite and aerosil particle to coat last layer metatitanic acid Ester coupling agent;
(3) emulsion of formula ratio, N hydroxymethyl acrylamide and n-butyl acetate are finally put into, rotating speed is 500-600 rev/min, Low speed disperses 5-10min.
Embodiment 3
First by weight by 50 parts of emulsions(The mixed liquor of A-102 silicone acrylic emulsions and A-99 pure-acrylic emulsions, both weight portions Number ratio is followed successively by 1.5:1), 2 parts of N hydroxymethyl acrylamides, 9 parts of aerosils, 6 parts of water, 2 parts of titanate coupling agents (monoalkoxy Pyrophosphate Type Yitanate Coupling Agent), 14 parts of auxiliary agents(2 parts of double thiocarbamates, 3 parts of acetate butyrate fibers Element, 3 parts of hydroxyethyl celluloses, 6 part 2,2,4- trimethyl -1,3- pentanediol mono isobutyrates), 9 parts of n-butyl acetates, 12 parts are swollen Swollen perlite, 10 parts of nano-calcium carbonates, is got the raw materials ready.
A kind of heat insulating coatings used for building exterior wall, its production method is comprised the following steps:
(1) sequentially add the water of formula ratio and the auxiliary agent of formula ratio in a mixer, start stirring, rotating speed be 1000-1200 turn/ Point, 5-10min is disperseed at a high speed;
(2) titanate coupling agent is dissolved in 2ml toluene solvants by weight, by formula ratio aerosil, expansion Perlite and nano-calcium carbonate are added in blender, start stirring, and rotating speed is 1000-1200 rev/min, is warmed up to 70 DEG C -80 DEG C, Then titanate coupling agent solution is uniformly added into using dripping method, drop rate control was dripped at 1 minute 1, and time for adding is 10- 20min;Continue to stir 20-30min after adding, make expanded perlite and aerosil particle to coat last layer metatitanic acid Ester coupling agent;
(3) emulsion of formula ratio, N hydroxymethyl acrylamide and n-butyl acetate are finally put into, rotating speed is 500-600 rev/min, Low speed disperses 5-10min.
The coating made using the coating (200 grams of quality), carries out respectively following performance detection:
1st, Determination of conductive coefficients:According to the regulation in GB/T10294-88, GB/T13475-92 and JGJ 51-2002 standards, Coating heat transfer coefficient is tested using heat conduction coefficient tester, thermal conductivity factor is little, illustrates that heat conductivility is poor.
2nd, surface sun reflectivity test:Require according to GJB 9001A -200l quality management systems, determine coating in light Reflectivity and hemispherical reflectance between spectral limit 250-2800nm.
3rd, heat insulating temperature difference testing:Coating is coated on the iron plate of 10mm x 10mm and makes model.The test sample plate for preparing Be put in temperature test instrument with reference to model, two kinds of samples are heated simultaneously, respectively instant recording heater box temperature, model rear cabinet Temperature and with reference to model rear cabinet temperature.While heated to 1min, test sample plate rear cabinet temperature and the temperature with reference to model rear cabinet temperature Degree is poor.
4th, durability test:(with reference to difficult GB/T1865-1997 of mark) carry out ageing-resistant performance survey in artificial ageing resistance storehouse Examination, with this example product as test sample, the water emulsion coating (German shield ceramic insulation coating) with commercially available better performances is Control sample.Test result, the control sample colour fading efflorescence time be 600h, and the ageing-resistant time of test sample be 2500h not Colour fading, not efflorescence.Illustrate that coating of the present invention has good durability.
The test result of the present invention is as shown in the table:

Claims (4)

1. a kind of heat insulating coatings used for building exterior wall, it is characterised in that:The coating is prepared from the following raw materials in parts by weight:
40~50 parts of emulsion;
1~2 part of N hydroxymethyl acrylamide;
6~9 parts of aerosil;
4~6 parts of water;
1~2 part of titanate coupling agent;
7~14 parts of auxiliary agent;
7~9 parts of n-butyl acetate;
9~12 parts of expanded perlite;
5~10 parts of nano-calcium carbonate;
Described emulsion is the mixed liquor of silicone acrylic emulsion and pure-acrylic emulsion, and both weight ratios are followed successively by 1.5:1;
Described auxiliary agent by the biocide mildewcide of 1~2 weight portion, the levelling agent of 1~3 weight portion, 1~3 weight portion thickener Constitute with the coalescents of 4~6 weight portions;Described biocide mildewcide is double thiocarbamates or pentachlorophenol;It is described Levelling agent be acetylbutyrylcellulose;Described thickener is hydroxyethyl cellulose;Described coalescents are 2,2,4- tri- Methyl isophthalic acid, 3- pentanediol mono isobutyrates.
2. heat insulating coatings used for building exterior wall according to claim 1, it is characterised in that:Described expanded perlite is Hollow bore configuration, diameter is between l0-l00 nanometers.
3. heat insulating coatings used for building exterior wall according to claim 1, it is characterised in that:Described titanate coupling agent For monoalkoxy Pyrophosphate Type Yitanate Coupling Agent.
4. heat insulating coatings used for building exterior wall according to claim 1, it is characterised in that:Its preparation method includes following Step:
(1) sequentially add the water of formula ratio and the auxiliary agent of formula ratio in a mixer, start stirring, rotating speed be 1000-1200 turn/ Point, 5-10min is disperseed at a high speed;
(2) titanate coupling agent is dissolved in 2ml toluene solvants by weight, by formula ratio aerosil, expansion Perlite and nano-calcium carbonate are added in blender, start stirring, and rotating speed is 1000-1200 rev/min, is warmed up to 70 DEG C -80 DEG C, Then titanate coupling agent solution is uniformly added into using dripping method, drop rate control was dripped at 1 minute 1, and time for adding is 10- 20min;Continue to stir 20-30min after adding, make expanded perlite and aerosil particle to coat last layer metatitanic acid Ester coupling agent;
(3) emulsion of formula ratio, N hydroxymethyl acrylamide and n-butyl acetate are finally put into, rotating speed is 500-600 rev/min, Low speed disperses 5-10min.
CN201611220249.9A 2016-12-26 2016-12-26 Heat insulation and heat preservation coating for building external wall and preparation method thereof Pending CN106590118A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107353754A (en) * 2017-08-17 2017-11-17 芜湖县双宝建材有限公司 A kind of thermal insulating external wall coating
CN107987597A (en) * 2017-11-21 2018-05-04 广西武宣金牌防水材料科技有限公司 Heat insulating coatings used for building exterior wall and preparation method thereof
CN110256882A (en) * 2019-06-12 2019-09-20 蓝海利 A kind of outer wall heat-insulating coating

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CN102329545A (en) * 2011-10-17 2012-01-25 青岛爱尔家佳新材料有限公司 Waterborne external thermal insulation coating and preparation method thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107353754A (en) * 2017-08-17 2017-11-17 芜湖县双宝建材有限公司 A kind of thermal insulating external wall coating
CN107987597A (en) * 2017-11-21 2018-05-04 广西武宣金牌防水材料科技有限公司 Heat insulating coatings used for building exterior wall and preparation method thereof
CN110256882A (en) * 2019-06-12 2019-09-20 蓝海利 A kind of outer wall heat-insulating coating

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Application publication date: 20170426