CN105505175A - Method for preparing building heat preservation reflective composite thermal insulation coating - Google Patents

Abstract

The invention relates to a method for preparing a building heat preservation reflective composite thermal insulation coating and belongs to the technical field of coatings. The method disclosed by the invention aims to solve the problems that the current used building reflective thermal insulation material in China is low in coating stain resistance, the coating surface is stained after the material is used for a period of time and the heat reflectance performance of the material is greatly reduced due to color change so as to cause a certain light pollution. The preparation method comprises the following steps: extracting substances capable of absorbing reflected light in wheat bran and cactus, and modifying montmorillonite; forming composite emulsion with waterborne polyurethane and acrylic acid for mixing; and finally, adding a thickening agent, a dispersing agent and other aids, adding ceramic microspheres and sepiolite powder to improve the thermal insulation properties, thereby obtaining a composite thermal insulation coating which is high in stain resistance and does not cause any light pollution.

Description

A kind of preparation method of building heat preservation reflection compound heat-insulation coating

Technical field

The present invention relates to the preparation method of a kind of building heat preservation reflection compound heat-insulation coating, belong to technical field of coatings.

Background technology

Along with energy dilemma is increasingly serious, energy-saving and emission-reduction, raising efficiency are one of important goals becoming scientific technological advance.The technology that coating technology is used widely in each field of society as one, also new challenge and opportunity is faced with, particularly skin thermal insulating coating, green environmental protection technique not only self is adopted to manufacture, and by changing the direction of heat transfer of buildings, the environment's heat reflections such as solar radiant energy or radiation are returned in air, and reduce the conduction outwardly of interior of building heat energy, thus the operation needs of buildings to air-conditioning system and HVAC system can be reduced, greatly reduce the energy consumption of buildings, meet the needs of social development.

Along with Xia Redong cold-peace hot summer and warm winter region building air conditioning and heating demand rise year by year, air conditioning electricity becomes the major portion of residential electricity consumption in summer, and peak of power consumption load forms challenge to net capacity and safety.Therefore, an urgent demand improves building energy utilising efficiency, under the prerequisite ensureing reasonable comfort level, reduces building energy consumption.Research shows, temperature being reduced energy consumption needed for 1 DEG C is 4 times that temperature are raised energy consumption needed for 1 DEG C.Architectural reflective heat-insulation paint, by the sun heat radiation in usable reflection summer, reduces building surface to the absorption of solar radiation energy.Therefore, after exterior wall and such coating of roofing application, film coated surface temperature can not significantly raise, thus is reduced by body of wall, roofing to the heat transfer in buildings.In Xia Redong cold-peace hot summer and warm winter region, after covering with paint, lacquer, colour wash, etc. architectural reflective heat-insulation paint, except metope, roofing temperature can be reduced summer, reduce heat and import into indoor, outside solving or alleviating the splitting of film accelerated deterioration and outer heat preservation system, the problem such as to ooze, also there is obvious energy-saving effect.The architectural reflective heat-insulation paint of Application and Development was mostly white or light in the past, there is the shortcoming of film contamination resistance difference in white or light-coloured coating, after roof or exterior wall use for some time, because coating surface is dirty, variable color causes heat reflection performance significantly to decline, also can cause certain light pollution.

Summary of the invention

Technical problem to be solved by this invention: it is poor that the architectural reflective heat-insulation material used for current China exists film contamination resistance, after using for some time, coating surface is dirty, variable color causes heat reflection performance significantly to decline, cause the problem of certain light pollution, the present invention is first by extracting the material of Absorbable rod reflected light in wheat bran and Root and stem of Cholla, modified montmorillonite used, then it is formed composite emulsion with aqueous polyurethane and vinylformic acid to mix, finally add thickening material, the auxiliary agents such as dispersion agent, add ceramic microsphere again and sepiolite powder increases its heat preservation and insulation, obtained a kind of contamination resistance is high, and the compound heat-insulation coating of any light pollution can not be produced.

For solving the problems of the technologies described above, the present invention adopts technical scheme as described below to be:

(1) 3:2:2 in mass ratio, get wheat bran, freshly remove the Root and stem of Cholla after root and distilled water, put it in runner milling and be milled into pulpous state, then soup compound is put into container under continuous stirring action, add the cellulase of wheat bran quality 3 ~ 5% and the polygalacturonase of wheat bran quality 1 ~ 1.5%, mixture temperature is set as 32 ~ 36 DEG C, and churning time is after 50 ~ 70min, mixture is put into whizzer, with rotating speed 2000r/min centrifugation 2 ~ 3min, get parting liquid, for subsequent use;

(2) retort furnace calcining 40 ~ 55min that montmorillonite puts into 800 DEG C is got, put it in pulverizer again and pulverize, cross 200 mesh sieves, subsequently by solid-to-liquid ratio 1:2, the particle of gained and above-mentioned parting liquid are put into container, then to add the isopyknic massfraction of parting liquid be wherein the hydrogen peroxide of 10%;

(3) mixture in said vesse is heated until seethe with excitement, after keeping temperature 20 ~ 30min, stop heating again, naturally cool to room temperature, then the massfraction adding parting liquid volume 12 ~ 15% is wherein 8% aqueous glycol solution, leave standstill 1 ~ 2h, subsequently mixture is put into the refrigerating chamber of-6 DEG C, refrigeration 35 ~ 40min, then filter and remove not solidified liquid, the solid of gained is warming up to room temperature, obtains compound heat-insulation paint binder;

(4) 60 ~ 90g thickening material Natvosol, 15 ~ 20g dispersion agent trolamine, 12 ~ 16g wetting agent fatty acid methyl ester and 8 ~ 9g polydimethylsiloxane is got, put into mixing machine to mix with 3000r/min, and then add 300 ~ 420g compound heat-insulation paint binder, 210 ~ 220g400 order sepiolite powder and 120 ~ 140g300 order titanium dioxide wherein and put into wherein, stir 30 ~ 40min;

(5) after above-mentioned stirring terminates, add 240 ~ 270g aqueous polyurethane, 20 ~ 24g polydimethylsiloxane and 200 ~ 260mL ACRYLIC EMULSION wherein, reduce rotating speed to 150r/min, stir 40 ~ 50min, subsequently mixture is put into container, add 130 ~ 150g3M wherein ^tMceramic microsphere, moves to container in microwave oscillator, vibration 30 ~ 40min, functional quality mark be 20% ammoniacal liquor regulate pH to be 7.5 ~ 9.0, building heat preservation reflection compound heat-insulation coating can be obtained.

Application method of the present invention: the coating obtained by the present invention is spread evenly across skin surface, coat-thickness is 0.5 ~ 0.8cm, obtaining buildings internal-external temperature difference is after testing 19 ~ 27 DEG C, contamination resistance is 1 ~ 3%, the surperficial sun reflectivity 0.89 ~ 0.96 of film, and extend 30 ~ 40% work-ing life, without any pollution than traditional thermal insulating coating.

The present invention is compared with additive method, and Advantageous Effects is:

(1) the present invention uses ceramic microsphere, plant milk extract protect coating and increase its performance, decreases light-struck destruction, extends the work-ing life of coating;

(2) the coating contamination resistance obtained by the present invention is high, and anti-resistance to spalling is high, and sunshade thermal insulation is effective, and can not produce light pollution.

Embodiment

3:2:2 in mass ratio, get wheat bran, freshly remove the Root and stem of Cholla after root and distilled water, put it in runner milling and be milled into pulpous state, then soup compound is put into container under continuous stirring action, add the cellulase of wheat bran quality 3 ~ 5% and the polygalacturonase of wheat bran quality 1 ~ 1.5%, mixture temperature is set as 32 ~ 36 DEG C, and churning time is after 50 ~ 70min, mixture is put into whizzer, with rotating speed 2000r/min centrifugation 2 ~ 3min, get parting liquid, for subsequent use; Get retort furnace calcining 40 ~ 55min that montmorillonite puts into 800 DEG C, put it in pulverizer again and pulverize, cross 200 mesh sieves, subsequently by solid-to-liquid ratio 1:2, the particle of gained and above-mentioned parting liquid are put into container, then to add the isopyknic massfraction of parting liquid be wherein the hydrogen peroxide of 10%; Mixture in said vesse is heated until seethe with excitement, after keeping temperature 20 ~ 30min, stop heating again, naturally cool to room temperature, then the massfraction adding parting liquid volume 12 ~ 15% is wherein 8% aqueous glycol solution, leave standstill 1 ~ 2h, subsequently mixture is put into the refrigerating chamber of-6 DEG C, refrigeration 35 ~ 40min, then filter and remove not solidified liquid, the solid of gained is warming up to room temperature, obtains compound heat-insulation paint binder; Get 60 ~ 90g thickening material Natvosol, 15 ~ 20g dispersion agent trolamine, 12 ~ 16g wetting agent fatty acid methyl ester and 8 ~ 9g polydimethylsiloxane, put into mixing machine to mix with 3000r/min, and then add 300 ~ 420g compound heat-insulation paint binder, 210 ~ 220g400 order sepiolite powder and 120 ~ 140g300 order titanium dioxide wherein and put into wherein, stir 30 ~ 40min; After above-mentioned stirring terminates, add 240 ~ 270g aqueous polyurethane, 20 ~ 24g polydimethylsiloxane and 200 ~ 260mL ACRYLIC EMULSION wherein, reduce rotating speed to 150r/min, stir 40 ~ 50min, subsequently mixture is put into container, add 130 ~ 150g3M wherein ^tMceramic microsphere, moves to container in microwave oscillator, vibration 30 ~ 40min, functional quality mark be 20% ammoniacal liquor regulate pH to be 7.5 ~ 9.0, building heat preservation reflection compound heat-insulation coating can be obtained.

Example 1

3:2:2 in mass ratio, get wheat bran, freshly remove the Root and stem of Cholla after root and distilled water, put it in runner milling and be milled into pulpous state, then soup compound is put into container under continuous stirring action, add the cellulase of wheat bran quality 3% and the polygalacturonase of wheat bran quality 1%, mixture temperature is set as 32 DEG C, and churning time is after 50min, mixture is put into whizzer, with rotating speed 2000r/min centrifugation 2min, get parting liquid, for subsequent use; Get the retort furnace that montmorillonite puts into 800 DEG C and calcine 40min, put it in pulverizer again and pulverize, cross 200 mesh sieves, subsequently by solid-to-liquid ratio 1:2, the particle of gained and above-mentioned parting liquid are put into container, then to add the isopyknic massfraction of parting liquid be wherein the hydrogen peroxide of 10%; Mixture in said vesse is heated until seethe with excitement, after keeping temperature 20min, stop heating again, naturally cool to room temperature, then the massfraction adding parting liquid volume 12% is wherein 8% aqueous glycol solution, leave standstill 1h, subsequently mixture is put into the refrigerating chamber of-6 DEG C, refrigeration 35min, then filter and remove not solidified liquid, the solid of gained is warming up to room temperature, obtains compound heat-insulation paint binder; Get 60g thickening material Natvosol, 15g dispersion agent trolamine, 12g wetting agent fatty acid methyl ester and 8g polydimethylsiloxane, put into mixing machine to mix with 3000r/min, and then add 300g compound heat-insulation paint binder, 210g400 order sepiolite powder and 120g300 order titanium dioxide wherein and put into wherein, stir 30min; After above-mentioned stirring terminates, add 240g aqueous polyurethane, 20g polydimethylsiloxane and 200mL ACRYLIC EMULSION wherein, reduce rotating speed to 150r/min, stir 40min, subsequently mixture is put into container, add 130g3M wherein ^tMceramic microsphere, moves to container in microwave oscillator, vibration 30min, functional quality mark be 20% ammoniacal liquor regulate pH to be 7.5, building heat preservation reflection compound heat-insulation coating can be obtained.

Coating obtained by the present invention is spread evenly across skin surface, and coat-thickness is 0.5cm, and obtaining buildings internal-external temperature difference is after testing 19 DEG C, contamination resistance is 1%, the surperficial sun reflectivity 0.89 of film, and extend 30% work-ing life, without any pollution than traditional thermal insulating coating.

Example 2

3:2:2 in mass ratio, get wheat bran, freshly remove the Root and stem of Cholla after root and distilled water, put it in runner milling and be milled into pulpous state, then soup compound is put into container under continuous stirring action, add the cellulase of wheat bran quality 5% and the polygalacturonase of wheat bran quality 1.5%, mixture temperature is set as 36 DEG C, and churning time is after 70min, mixture is put into whizzer, with rotating speed 2000r/min centrifugation 3min, get parting liquid, for subsequent use; Get the retort furnace that montmorillonite puts into 800 DEG C and calcine 55min, put it in pulverizer again and pulverize, cross 200 mesh sieves, subsequently by solid-to-liquid ratio 1:2, the particle of gained and above-mentioned parting liquid are put into container, then to add the isopyknic massfraction of parting liquid be wherein the hydrogen peroxide of 10%; Mixture in said vesse is heated until seethe with excitement, after keeping temperature 30min, stop heating again, naturally cool to room temperature, then the massfraction adding parting liquid volume 15% is wherein 8% aqueous glycol solution, leave standstill 2h, subsequently mixture is put into the refrigerating chamber of-6 DEG C, refrigeration 40min, then filter and remove not solidified liquid, the solid of gained is warming up to room temperature, obtains compound heat-insulation paint binder; Get 90g thickening material Natvosol, 20g dispersion agent trolamine, 16g wetting agent fatty acid methyl ester and 9g polydimethylsiloxane, put into mixing machine to mix with 3000r/min, and then add 420g compound heat-insulation paint binder, 220g400 order sepiolite powder and 140g300 order titanium dioxide wherein and put into wherein, stir 40min; After above-mentioned stirring terminates, add 270g aqueous polyurethane, 24g polydimethylsiloxane and 260mL ACRYLIC EMULSION wherein, reduce rotating speed to 150r/min, stir 50min, subsequently mixture is put into container, add 150g3M wherein ^tMceramic microsphere, moves to container in microwave oscillator, vibration 40min, functional quality mark be 20% ammoniacal liquor regulate pH to be 9.0, building heat preservation reflection compound heat-insulation coating can be obtained.

Coating obtained by the present invention is spread evenly across skin surface, and coat-thickness is 0.8cm, and obtaining buildings internal-external temperature difference is after testing 27 DEG C, contamination resistance is 3%, the surperficial sun reflectivity 0.96 of film, and extend 40% work-ing life, without any pollution than traditional thermal insulating coating.

Example 3

3:2:2 in mass ratio, get wheat bran, freshly remove the Root and stem of Cholla after root and distilled water, put it in runner milling and be milled into pulpous state, then soup compound is put into container under continuous stirring action, add the cellulase of wheat bran quality 4% and the polygalacturonase of wheat bran quality 1.2%, mixture temperature is set as 35 DEG C, and churning time is after 60min, mixture is put into whizzer, with rotating speed 2000r/min centrifugation 3min, get parting liquid, for subsequent use; Get the retort furnace that montmorillonite puts into 800 DEG C and calcine 50min, put it in pulverizer again and pulverize, cross 200 mesh sieves, subsequently by solid-to-liquid ratio 1:2, the particle of gained and above-mentioned parting liquid are put into container, then to add the isopyknic massfraction of parting liquid be wherein the hydrogen peroxide of 10%; Mixture in said vesse is heated until seethe with excitement, after keeping temperature 25min, stop heating again, naturally cool to room temperature, then the massfraction adding parting liquid volume 13% is wherein 8% aqueous glycol solution, leave standstill 2h, subsequently mixture is put into the refrigerating chamber of-6 DEG C, refrigeration 38min, then filter and remove not solidified liquid, the solid of gained is warming up to room temperature, obtains compound heat-insulation paint binder; Get 80g thickening material Natvosol, 18g dispersion agent trolamine, 12 ~ 16g wetting agent fatty acid methyl ester and 9g polydimethylsiloxane, put into mixing machine to mix with 3000r/min, and then add 380g compound heat-insulation paint binder, 215g400 order sepiolite powder and 125g300 order titanium dioxide wherein and put into wherein, stir 35min; After above-mentioned stirring terminates, add 260g aqueous polyurethane, 22g polydimethylsiloxane and 240mL ACRYLIC EMULSION wherein, reduce rotating speed to 150r/min, stir 45min, subsequently mixture is put into container, add 140g3M wherein ^tMceramic microsphere, moves to container in microwave oscillator, vibration 35min, functional quality mark be 20% ammoniacal liquor regulate pH to be 8.0, building heat preservation reflection compound heat-insulation coating can be obtained.

Coating obtained by the present invention is spread evenly across skin surface, and coat-thickness is 0.6cm, and obtaining buildings internal-external temperature difference is after testing 22.5 DEG C, contamination resistance is 2%, the surperficial sun reflectivity 0.93 of film, and extend 35% work-ing life, without any pollution than traditional thermal insulating coating.

Claims (1)

1. a preparation method for building heat preservation reflection compound heat-insulation coating, is characterized in that concrete preparation process is:

(1) 3:2:2 in mass ratio, get wheat bran, freshly remove the Root and stem of Cholla after root and distilled water, put it in runner milling and be milled into pulpous state, then soup compound is put into container under continuous stirring action, add the cellulase of wheat bran quality 3 ~ 5% and the polygalacturonase of wheat bran quality 1 ~ 1.5%, mixture temperature is set as 32 ~ 36 DEG C, and churning time is after 50 ~ 70min, mixture is put into whizzer, with rotating speed 2000r/min centrifugation 2 ~ 3min, get parting liquid, for subsequent use;

(2) retort furnace calcining 40 ~ 55min that montmorillonite puts into 800 DEG C is got, put it in pulverizer again and pulverize, cross 200 mesh sieves, subsequently by solid-to-liquid ratio 1:2, the particle of gained and above-mentioned parting liquid are put into container, then to add the isopyknic massfraction of parting liquid be wherein the hydrogen peroxide of 10%;

(3) mixture in said vesse is heated until seethe with excitement, after keeping temperature 20 ~ 30min, stop heating again, naturally cool to room temperature, then the massfraction adding parting liquid volume 12 ~ 15% is wherein 8% aqueous glycol solution, leave standstill 1 ~ 2h, subsequently mixture is put into the refrigerating chamber of-6 DEG C, refrigeration 35 ~ 40min, then filter and remove not solidified liquid, the solid of gained is warming up to room temperature, obtains compound heat-insulation paint binder;

(4) 60 ~ 90g thickening material Natvosol, 15 ~ 20g dispersion agent trolamine, 12 ~ 16g wetting agent fatty acid methyl ester and 8 ~ 9g polydimethylsiloxane is got, put into mixing machine to mix with 3000r/min, and then add 300 ~ 420g compound heat-insulation paint binder, 210 ~ 220g400 order sepiolite powder and 120 ~ 140g300 order titanium dioxide wherein and put into wherein, stir 30 ~ 40min;

(5) after above-mentioned stirring terminates, add 240 ~ 270g aqueous polyurethane, 20 ~ 24g polydimethylsiloxane and 200 ~ 260mL ACRYLIC EMULSION wherein, reduce rotating speed to 150r/min, stir 40 ~ 50min, subsequently mixture is put into container, add 130 ~ 150g3M wherein ^tMceramic microsphere, moves to container in microwave oscillator, vibration 30 ~ 40min, functional quality mark be 20% ammoniacal liquor regulate pH to be 7.5 ~ 9.0, building heat preservation reflection compound heat-insulation coating can be obtained.