CN111334144B - Method for preventing object surface from dewing by using expandable microspheres - Google Patents
Method for preventing object surface from dewing by using expandable microspheres Download PDFInfo
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- CN111334144B CN111334144B CN202010306396.8A CN202010306396A CN111334144B CN 111334144 B CN111334144 B CN 111334144B CN 202010306396 A CN202010306396 A CN 202010306396A CN 111334144 B CN111334144 B CN 111334144B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/22—Expandable microspheres, e.g. Expancel®
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a method for preventing condensation on the surface of an object by using expandable microspheres. The method comprises the steps of firstly putting expandable microspheres and a water-based adhesive into a high-speed dispersion machine for uniform dispersion and mixing, then adding polypropylene glycol and nitrolacquer, uniformly dispersing and mixing, then spraying the material on the surface of a material in a spraying mode, naturally airing, and finally heating and expanding the material sprayed on the surface of the material to form an anti-exposure layer. The invention has wide applicability to the dewing prevention of the object surface, can be applied to most fields and application occasions, is not influenced by the ambient temperature and humidity, saves the transportation cost of the dewing prevention material, simplifies the dewing prevention construction process, and greatly reduces the cost required by the dewing prevention project of the object surface.
Description
Technical Field
The invention belongs to the technical field of preparation of anti-condensation materials, and particularly relates to a method for preventing condensation on the surface of an object by using expandable microspheres.
Background
Due to the fact that the temperature of the surface of the object is too low, water vapor under the condition of external high-temperature environment temperature is condensed on the surface of the low-temperature object, and condensation is generated; the long-time condensation can cause the surface of the logistics to be mildewed and corroded, can cause equipment damage, environmental damage, service life reduction, influence on normal use, and can cause a plurality of problems such as production accidents in severe cases. There are many areas where dew condensation prevention is required, such as the construction area: basements, air-raid shelters, warehouses, walls, workshops, air conditioning systems, and the like; the industrial field is as follows: refrigerating unit, hydroelectric generating set, low temperature storage tank, cold water pipeline, container, cooling water set, low temperature reaction unit etc..
The prior heat-insulating board and coiled material used for preventing condensation has the following defects: 1. the heat-insulating plate or the coiled material is processed by a mould, and the thickness of the material can not be selected at will according to actual requirements. 2. The heat insulation board or the coiled material has huge volume and high cost in transportation. 3. The operation procedures of cutting, frictioning, attaching and the like are needed in the application process of the heat-insulating plate or the coiled material, so that the labor intensity is high, and the construction time is long. 4. The leftover materials cut off in the use process of the heat-insulating plate or the coiled material cannot be continuously applied, so that waste is generated, the recovery is difficult, and the environment is influenced by random discarding. 5. The heat preservation panel or coiled material adopts the mode of laminating can form the concatenation seam, can't accomplish wholeness antisweat. 6. After the heat-insulating board or the coiled material is attached, due to the existence of splicing seams or uneven sizing, condensation is easily generated inside the object, so that the service life of the material is short.
The existing heat-insulating mortar used for preventing condensation has the following defects: 1. the thermal insulation mortar has a large thermal conductivity coefficient and a poor anti-condensation effect. 2. The thickness of an object needing the anti-condensation function is required to be very thick, the surface temperature of the object needing the anti-condensation function is generally low, the environmental humidity is high, and the heat-preservation mortar contains a large amount of water and is difficult to dry. 3. The anti-condensation process needs repeated construction, and secondary knife coating is carried out after the first knife coating material is thoroughly dried, so that the process is repeated until the required thickness is reached, the labor intensity is high, and the construction period is long. 4, the adhesive force between the thermal insulation mortar and the surface of an object is poor, the thermal insulation mortar is easy to fall off, and the service life is short. 5 the transportation volume of the thermal insulation mortar is large, and the transportation cost of the raw materials is high.
The existing anti-condensation coating has the following defects: 1. the anti-condensation coating uses domestic hollow glass microspheres as heat insulation aggregate to produce products with large heat conductivity coefficient and poor anti-condensation effect. 2. The product produced by using the imported hollow glass microspheres as the heat insulation aggregate of the anti-condensation coating has high cost and is difficult to be applied in a large range. 3. The thickness of an object requiring the anti-condensation function is required to be thick, the surface temperature of the object requiring the anti-condensation function is generally low, the environmental humidity is high, and the anti-condensation coating contains a large amount of water and is difficult to dry. 4. The anti-condensation coating needs to be sprayed or blade-coated once in a thin way, and then is sprayed or blade-coated for the second time after being thoroughly dried, and the steps are repeated until the required thickness is reached, so that the labor intensity is high, and the construction period is long.
Disclosure of Invention
The invention aims to provide a method for preventing condensation on the surface of an object by using expandable microspheres.
A method for preventing condensation on the surface of an object by using expandable microspheres comprises the following steps:
(1) putting the expandable microspheres and the water-based adhesive into a high-speed dispersion machine to disperse for 20-40 minutes and uniformly mixing; adding polypropylene glycol and nitrolacquer, dispersing for 10-20 minutes and uniformly mixing; the rotating speed of the high-speed dispersion machine is 1000 r/min;
(2) filtering the material prepared in the step (1) into a spraying machine by using a filter screen of 150-;
(3) and heating and expanding the material sprayed on the surface of the material to form an anti-dew layer.
The expandable microspheres are foaming agents MSL-3080.
The expansion times of the expandable microspheres are 10-60 times, and the expansion temperature is 80-200 ℃.
The water-based adhesive is one or more of water-based acrylic resin, water-based ethylene propylene adhesive and water-based polyurethane adhesive.
The mass ratio of the expandable microspheres to the water-based adhesive is 1: (0.1-100).
The heating expansion adopts an electromagnetic steam heater.
The heating expansion adopts an electric heater.
And after the anti-dew layer expands and condenses, putty is coated and leveled.
The adding amount of the polypropylene glycol and the nitrolacquer accounts for 3-8% of the total mass of the expandable microspheres and the water-based adhesive; the mass ratio of the polypropylene glycol to the nitrolacquer is 3: 1.
the invention has the beneficial effects that: the method can be applied to both plane structures and special-shaped structures, the anti-condensation structure on the surface of the object has integrity, an effective anti-condensation structure can be quickly formed on the surface of the object, and the problems that the environment humidity is high, the surface temperature of the object is low, and the heat-preservation mortar, the water-based heat-preservation coating and the anti-condensation coating cannot be applied are solved. Solves the problems of high raw material cost and high transportation cost of the anti-condensation coating and the water-based heat-insulating coating. The problems of high transportation cost and high construction cost of the heat-insulating board and the coiled material are solved. The invention has wide applicability to the dewing prevention of the object surface, can be applied to most fields and application occasions, is not influenced by the ambient temperature and humidity, saves the transportation cost of the dewing prevention material, simplifies the dewing prevention construction process, and greatly reduces the cost required by the dewing prevention project of the object surface. The phenomenon of interface, side seam after having solved insulation board and coiled material antisweat, can obtain the wholeness effect of object surface antisweat structure. The problems that the water-based heat-insulating material is difficult to dry quickly in the anti-condensation process, needs repeated construction and even cannot be applied are solved.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example 1
A method for preventing condensation on the surface of an object by using expandable microspheres comprises the following steps:
(1) putting the foaming agent MSL-3080 and the water-based acrylic resin into a high-speed dispersion machine to disperse for 30 minutes and uniformly mix; adding polypropylene glycol and nitrolacquer, dispersing for 15 minutes and uniformly mixing; the rotating speed of the high-speed dispersion machine is 1000 r/min; the mass ratio of the foaming agent MSL-3080 to the water-based acrylic resin is 1: 2; the adding amount of the polypropylene glycol and the nitrolacquer accounts for 5 percent of the total mass of the foaming agent MSL-3080 and the water-based acrylic resin; the mass ratio of the polypropylene glycol to the nitrolacquer is 3: 1;
(2) filtering the material prepared in the step (1) into a spraying machine by using a 200-mesh filter screen, spraying the material on the surface of the material in a spraying mode, and naturally drying;
(3) and (3) heating and expanding the material sprayed on the surface of the material by using a steam heater, wherein the expansion temperature is 120 ℃, and an anti-dew layer is formed.
Example 2
A method for preventing condensation on the surface of an object by using expandable microspheres comprises the following steps:
(1) putting the foaming agent MSL-3080 and the water-based ethylene propylene adhesive into a high-speed dispersion machine to disperse for 22 minutes and uniformly mixing; adding polypropylene glycol and nitrolacquer, dispersing for 12 minutes and uniformly mixing; the rotating speed of the high-speed dispersion machine is 1000 r/min; the mass ratio of the foaming agent MSL-3080 to the water-based ethylene propylene adhesive is 1: 3; the addition amount of the polypropylene glycol and the nitrolacquer accounts for 4 percent of the total mass of the foaming agent MSL-3080 and the water-based ethylene propylene adhesive; the mass ratio of the polypropylene glycol to the nitrolacquer is 3: 1;
(2) filtering the material prepared in the step (1) into a spraying machine by using a 160-mesh filter screen, spraying the material on the surface of the material in a spraying mode, and naturally drying;
(3) and (3) heating and expanding the material sprayed on the surface of the material by using an electric heater, wherein the expansion temperature is 140 ℃, and an anti-dew layer is formed.
Example 3
A method for preventing condensation on the surface of an object by using expandable microspheres comprises the following steps:
(1) putting the foaming agent MSL-3080 and the waterborne polyurethane adhesive into a high-speed dispersion machine to disperse for 38 minutes and uniformly mixing; adding polypropylene glycol and nitrolacquer, dispersing for 18 minutes and uniformly mixing; the rotating speed of the high-speed dispersion machine is 1000 r/min; the mass ratio of the foaming agent MSL-3080 to the aqueous polyurethane adhesive is 1: 4; the addition amount of the polypropylene glycol and the nitrolacquer accounts for 3-8% of the total mass of the foaming agent MSL-3080 and the waterborne polyurethane adhesive; the mass ratio of the polypropylene glycol to the nitrolacquer is 3: 1.
(2) filtering the material prepared in the step (1) into a spraying machine by using a 220-mesh filter screen, spraying the material on the surface of the material in a spraying mode, and naturally drying;
(3) and (3) heating and expanding the material sprayed on the surface of the material by using a steam heater, wherein the expansion temperature is 130 ℃, and an anti-dew layer is formed.
Example 4
A method for preventing condensation on the surface of an object by using expandable microspheres comprises the following steps:
(1) putting the foaming agent MSL-3080 and the water-based acrylic resin into a high-speed dispersion machine to disperse for 30 minutes and uniformly mix; adding polypropylene glycol and nitrolacquer, dispersing for 15 minutes and uniformly mixing; the rotating speed of the high-speed dispersion machine is 1000 r/min; the mass ratio of the foaming agent MSL-3080 to the water-based acrylic resin is 1: 2; the adding amount of the polypropylene glycol and the nitrolacquer accounts for 5 percent of the total mass of the foaming agent MSL-3080 and the water-based acrylic resin; the mass ratio of the polypropylene glycol to the nitrolacquer is 3: 1;
(2) filtering the material prepared in the step (1) into a spraying machine by using a 200-mesh filter screen, spraying the material on the surface of the material in a spraying mode, and naturally drying;
(3) and (3) heating and expanding the material sprayed on the surface of the material by using a steam heater, wherein the expansion temperature is 120 ℃, and an anti-dew layer is formed.
(4) After the anti-dew layer is formed, putty is coated and leveled.
Comparative example 1
A method for preventing condensation on the surface of an object by using expandable microspheres comprises the following steps:
(1) putting the foaming agent MSL-3080 and the water-based acrylic resin into a high-speed dispersion machine to disperse for 30 minutes and uniformly mix; adding polypropylene glycol, dispersing for 15 min, and mixing; the rotating speed of the high-speed dispersion machine is 1000 r/min; the mass ratio of the foaming agent MSL-3080 to the water-based acrylic resin is 1: 2; the addition amount of the polypropylene glycol accounts for 5% of the total mass of the foaming agent MSL-3080 and the water-based acrylic resin;
(2) filtering the material prepared in the step (1) into a spraying machine by using a 200-mesh filter screen, spraying the material on the surface of the material in a spraying mode, and naturally drying;
(3) and (3) heating and expanding the material sprayed on the surface of the material by using a steam heater, wherein the expansion temperature is 120 ℃, and an anti-dew layer is formed.
Comparative example 2
A method for preventing condensation on the surface of an object by using expandable microspheres comprises the following steps:
(1) putting the foaming agent MSL-3080 and the water-based acrylic resin into a high-speed dispersion machine to disperse for 30 minutes and uniformly mix; adding the nitrolacquer, dispersing for 15 minutes and uniformly mixing; the rotating speed of the high-speed dispersion machine is 1000 r/min; the mass ratio of the foaming agent MSL-3080 to the water-based acrylic resin is 1: 2; the adding amount of the nitrolacquer accounts for 5 percent of the total mass of the foaming agent MSL-3080 and the water-based acrylic resin;
(2) filtering the material prepared in the step (1) into a spraying machine by using a 200-mesh filter screen, spraying the material on the surface of the material in a spraying mode, and naturally drying;
(3) and (3) heating and expanding the material sprayed on the surface of the material by using a steam heater, wherein the expansion temperature is 120 ℃, and an anti-dew layer is formed.
Comparative example 3
A method for preventing condensation on the surface of an object by using expandable microspheres comprises the following steps:
(1) putting the foaming agent MSL-3080 and the water-based acrylic resin into a high-speed dispersion machine to disperse for 30 minutes and uniformly mix; the rotating speed of the high-speed dispersion machine is 1000 r/min; the mass ratio of the foaming agent MSL-3080 to the water-based acrylic resin is 1: 2;
(2) filtering the material prepared in the step (1) into a spraying machine by using a 200-mesh filter screen, spraying the material on the surface of the material in a spraying mode, and naturally drying;
(3) and (3) heating and expanding the material sprayed on the surface of the material by using a steam heater, wherein the expansion temperature is 120 ℃, and an anti-dew layer is formed.
Comparative example 4
A method for preventing condensation on the surface of an object by using expandable microspheres comprises the following steps:
(1) adding a foaming agent MSL-3080, polypropylene glycol and nitrolacquer into a high-speed dispersion machine to disperse for 30 minutes and uniformly mix; the rotating speed of the high-speed dispersion machine is 1000 r/min; the addition amount of the polypropylene glycol and the nitrolacquer accounts for 5 percent of the mass of the foaming agent MSL-3080; the mass ratio of the polypropylene glycol to the nitrolacquer is 3: 1;
(2) filtering the material prepared in the step (1) into a spraying machine by using a 200-mesh filter screen, spraying the material on the surface of the material in a spraying mode, and naturally drying;
(3) and (3) heating and expanding the material sprayed on the surface of the material by using a steam heater, wherein the expansion temperature is 120 ℃, and an anti-dew layer is formed.
Comparative example 5
A method for preventing condensation on the surface of an object by using expandable microspheres comprises the following steps:
(1) putting the water-based acrylic resin, the polypropylene glycol and the nitrolacquer into a high-speed dispersion machine to disperse for 30 minutes and uniformly mix; the rotating speed of the high-speed dispersion machine is 1000 r/min; the adding amount of the polypropylene glycol and the nitrolacquer accounts for 5 percent of the total mass of the water-based acrylic resin; the mass ratio of the polypropylene glycol to the nitrolacquer is 3: 1;
(2) filtering the material prepared in the step (1) into a spraying machine by using a 200-mesh filter screen, spraying the material on the surface of the material in a spraying mode, and naturally drying;
(3) and (3) heating and expanding the material sprayed on the surface of the material by using a steam heater, wherein the expansion temperature is 120 ℃, and an anti-dew layer is formed.
Experimental example 1:
the thermal conductivity W (m.K) of the anti-exposure layers of examples 1 to 3 and comparative examples 4 to 5 was measured according to the method specified in "GB T10295-:
TABLE 1
Note: represents P <0.05 compared to example 1.
Experimental example 2:
taking 21 stainless steel plates, averagely dividing into 7 groups, wherein each stainless steel plate is 1mm thick, 40cm long and 30cm wide, 6 groups are respectively prepared into an anti-dew layer according to the methods of examples 1-3 and comparative examples 1-3, arranging a cooling circulating pipe on one side of each stainless steel plate, starting a circulating pump (DLSB low-temperature cooling liquid circulating pump) to supply circulating cold water, so that the surface temperature of a steel plate of a comparison group (without the anti-dew layer) is about 15 ℃, adding the same circulating water into other groups of the stainless steel plates according to the same parameters, placing the steel plates in a stable environment temperature, keeping the environment temperature at 28 ℃, continuously introducing the circulating cold water for 30min, measuring the surface temperature of each sample plate by using an infrared thermometer (Youder UNI-T302 UT302D +), wiping the surface of the sample by using sponge with the same weight, measuring the weight increment of the sponge, calculating the dew condensation amount, keeping the relative humidity of the environment at 80%, under the conditions of the environmental temperature and the humidity, the theoretical dew point temperature is 24.2 ℃ through table lookup, and the test result is shown in table 2:
TABLE 2
Note: represents P <0.05 compared to example 1; # represents P <0.05 compared to comparative example 3.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A method for preventing condensation on the surface of an object by using expandable microspheres is characterized by comprising the following steps:
(1) putting the expandable microspheres and the water-based adhesive into a high-speed dispersion machine to disperse for 20-40 minutes and uniformly mixing; adding polypropylene glycol and nitrolacquer, dispersing for 10-20 minutes and uniformly mixing;
(2) filtering the material prepared in the step (1) into a spraying machine by using a filter screen of 150-;
(3) heating and expanding the material sprayed on the surface of the material to form an anti-dew layer;
the expandable microspheres are foaming agents MSL-3080, and the water-based adhesive is water-based acrylic resin.
2. The method for preventing condensation on the surface of an object using expandable microspheres of claim 1, wherein the expandable microspheres have a expansion ratio of 10 to 60 times and an expansion temperature of 80 to 200 ℃.
3. The method for preventing condensation on the surface of an object by using the expandable microspheres according to claim 1, wherein the mass ratio of the expandable microspheres to the aqueous adhesive is 1: (0.1-100).
4. The method for preventing condensation on the surface of an object by using expandable microspheres according to claim 1, wherein the heating expansion is performed by steam heating or hot air heating.
5. The method of claim 1, wherein the heat expansion is electrically heated.
6. The method for preventing condensation on the surface of an object by using the expandable microspheres as claimed in claim 1, wherein the anti-condensation layer is leveled by applying putty after being expanded and condensed.
7. The method for preventing condensation on the surface of an object by using expandable microspheres according to claim 1, wherein the polypropylene glycol and the nitrolacquer are added in an amount of 3-8% of the total mass of the expandable microspheres and the aqueous binder; the mass ratio of the polypropylene glycol to the nitrolacquer is 3: 1.
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| Title |
|---|
| 《热发泡聚合物微球》;应向伟等;《今日科技》;20170630(第5期);第41页 * |
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| Publication number | Publication date |
|---|---|
| CN111334144A (en) | 2020-06-26 |
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