CN106905790B - Reflective heat-insulating coating material and preparation method thereof - Google Patents
Reflective heat-insulating coating material and preparation method thereof Download PDFInfo
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- CN106905790B CN106905790B CN201710094844.0A CN201710094844A CN106905790B CN 106905790 B CN106905790 B CN 106905790B CN 201710094844 A CN201710094844 A CN 201710094844A CN 106905790 B CN106905790 B CN 106905790B
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Abstract
the invention discloses a reflective heat-insulating coating material and a preparation method thereof, wherein the reflective heat-insulating coating material comprises
Description
Technical Field
The invention belongs to the field of coating materials, and particularly relates to a method for preparing a reflective heat-insulating coating by adopting modified shell powder.
background
the heat insulation coating is used as a novel energy-saving material, can effectively reflect and separate the energy of sunlight, obviously reduces the temperature of the outer wall, the roof and the indoor of a building, and reduces the energy consumption of refrigeration equipment such as an air conditioner and the like. The use of the heat insulation coating can improve the working environment and obviously save energy, and the heat insulation coating is convenient to construct and has a decorative effect, so that the heat insulation coating is widely applied to the field of buildings.
The filler is an important component of the coating, so that the cost of the coating can be reduced, and the performance of the coating can be improved. At present, the more researched fillers comprise nano calcium carbonate, talcum powder, hollow glass beads, nano metal oxide and the like, but the fillers are generally high in price, and the production process is not environment-friendly.
on the other hand, the coastline is long in China, the fishery is developed, and a huge amount of fishery by-products, namely shells, exist. However, at present, a large number of effective utilization ways are lacked, and a large number of shells are treated as waste, so that the environment is polluted. The development of a large number of related technologies for utilizing shells can bring huge economic benefits while protecting the environment. At present, the research and application of shell powder mainly focus on the aspects of purification and decontamination and wall decoration. The shell powder mainly contains calcium carbonate, and can be used for coating to improve the water resistance of a coating and the strength of a paint film after proper treatment. According to the invention, the calcined shell powder is utilized to prepare the reflective heat-insulating coating, and the reflective heat-insulating coating has excellent heat-insulating property, is economic and environment-friendly in preparation process, and has important industrial value and environmental value.
disclosure of Invention
the technical problem is as follows: the invention aims to provide a method for modifying shell powder and application of the modified shell powder in a reflective insulation coating. The invention develops a coating material with excellent comprehensive performances of heat insulation, stain resistance, water resistance, washing resistance, aging resistance and the like by using titanium dioxide as a pigment and calcined modified shell powder and talcum powder as fillers.
The technical scheme is as follows: the invention provides a reflective heat-insulating coating material, which comprises the following components in percentage by mass:
wherein:
The particle size of the titanium dioxide is 0.05-1 μm.
The particle size of the modified shell powder is not more than 10 mu m, and the preparation process comprises the following steps: calcining the shell powder at the temperature rising speed of 1-20 ℃/min for 0.5-5h at the temperature of 100-1000 ℃, wherein the calcining atmosphere is an atmospheric atmosphere or an oxygen atmosphere.
The talcum powder is magnesium silicate powder with the grain size of 0.1-100 mu m.
the solid content of the water-based acrylic emulsion is 40-50 percent; the wetting agent is an acrylic wetting agent; the dispersant is fatty acid dispersant; the defoaming agent is a high-carbon alcohol defoaming agent; the film-forming assistant is an alcohol ether film-forming assistant.
The invention also provides a preparation method of the reflective heat-insulating coating material. The method comprises the following steps:
(1) Weighing raw materials according to the mass ratio of each component in the reflective heat-insulation coating material;
(2) Adding titanium dioxide, modified shell powder, a wetting agent, a dispersing agent, a defoaming agent and water into the water-based acrylic emulsion, and then grinding and dispersing uniformly at room temperature to obtain a mixture;
(3) And adding talcum powder and a film forming aid into the mixture, and uniformly stirring to obtain the reflective heat-insulating coating material.
wherein:
(2) the grinding and dispersing means that grinding and stirring are carried out at a speed of 500 to 1500r/min by a grinding and dispersing stirrer.
(3) The stirring is performed by a grinding dispersion mixer at a speed of 500 to 1500 r/min.
has the advantages that: compared with the prior art, the invention has the following advantages:
(1) according to the invention, the calcined modified shell powder is used as the filler of the reflective heat-insulation coating for the first time to replace the traditional nano calcium carbonate, so that the heat insulation, aging resistance and washing resistance of the coating material are improved, and the cost of the coating material is reduced (because the nano calcium carbonate is higher in cost). Meanwhile, the coating material is environment-friendly and safe, is convenient to construct and has excellent comprehensive performance.
(2) the invention uses the water-based acrylic emulsion as the film forming base material, is healthy and environment-friendly, and has high reflectivity of the water-based acrylic resin to sunlight.
(3) According to the invention, the shell powder is treated by a calcination mode, so that the modified shell powder with higher reflectivity can be obtained at low cost, and the cost of the reflective heat-insulating coating can be greatly reduced.
Detailed Description
The present invention is described in detail below with reference to examples:
Example 1
1. weighing the following raw materials in proportion:
50g of water-based acrylic emulsion;
17g of titanium dioxide;
1g of talcum powder;
10g of modified shell powder;
0.5g of wetting agent;
0.5g of dispersant
0.5g of defoaming agent;
0.5g of film-forming assistant;
20g of water.
2. Preparing calcined modified shell powder: and (3) weighing the shell powder, heating to 1000 ℃ at the speed of 20 ℃/min in an atmosphere furnace in the atmosphere, preserving heat for 0.5h, and then cooling along with the furnace to obtain the modified shell powder.
3. adding titanium dioxide, modified shell powder, wetting agent, dispersing agent, defoaming agent and water into water-based acrylic emulsion, grinding and dispersing at the speed of 1500r/min by using a grinding and dispersing stirrer at room temperature, uniformly mixing, adding talcum powder and film-forming additive, and stirring at the speed of 500r/min to obtain the reflective heat-insulating coating material.
4. shell powder reflectivity detection
The solar reflectance of the unmodified and modified shell powder was measured with an ultraviolet spectrophotometer. The solar reflectance of the modified shell powder in the embodiment in visible light band (420 nm-720 nm) and near infrared band (720 nm-2500 nm) reaches 92%, while the reflectance of the unmodified shell powder is only 78%.
5. coating Material Performance test
(1) solar reflectance test
according to GB/T25261-2010, the aluminum alloy plate is coated with a coater or a scraper in two ways, the coating is required to be flat and free of defects such as bubbles and cracks, and the length and width of an aluminum plate sample are 40mm multiplied by 40 mm.
The solar reflectance of the coating was then measured using an ultraviolet spectrophotometer. The solar reflectance of the thermal insulation coating of the embodiment in a visible light wave band (420 nm-720 nm) and a near infrared wave band (720 nm-2500 nm) reaches 88%, and the main energy of sunlight is concentrated in the visible light and the near infrared wave band, which shows that the coating of the invention has high reflectivity to the sunlight of the whole wave band.
(2) Testing of Heat insulating Properties
a30 cm-30 cm heat insulation box body is built by polystyrene boards, the outside of the heat insulation box body is wrapped and sealed by tinfoil, one test surface is a base material, a coating is uniformly coated on an iron plate of the base material, a test light source is a 500w iodine-tungsten lamp which is 50cm away from the base plate, temperature measuring points are respectively arranged at the center of the surface of the base material and the center of the inside of the box body, and then the temperature rise conditions of the internal temperature measuring points are compared, and the test time is 1 h.
Through tests, the temperature of the internal temperature measuring point of the non-coated layer is increased by 14.5 ℃, the temperature of the internal temperature measuring point of the coated heat-insulating coating is increased by 12.8 ℃, and the internal temperature measuring point of the coated heat-insulating coating is only increased by 11.1 ℃ when the heat-insulating coating is coated, which shows that the heat-insulating coating has excellent heat-insulating and cooling effects.
(3) paint film adhesion test
According to GB/T1720-79, the coating is uniformly coated on a steel plate, the size of the steel plate is 50mm multiplied by 100mm multiplied by (0.2-0.3) mm, and then an adhesion tester is used for detecting, so that the heat-insulating coating of the embodiment has a complete paint film within the scratch range of a round rolling line, does not fall off, and has an adhesion of grade 1.
(4) water resistance test
the thermal insulation coating of the embodiment is subjected to a water resistance test according to GB/T1733-1993, has no abnormality for 96h, and meets the standard requirement.
(5) Aging resistance test
The thermal insulation coating of the embodiment is subjected to aging resistance test according to GB/T1865-1997, does not bubble, does not peel off and has no crack after 500 hours, and meets the standard requirement.
(6) scrub resistance test
the thermal barrier coating of the embodiment is subjected to a scrub resistance test according to GB/T9266-2009, and the surface of the base material is not exposed after being scrubbed for a specified number of times, so that the standard requirement is met.
The commercial thermal barrier coating has a scrub resistance of 2000 times, while the scrub resistance of the thermal barrier coating of the present invention is 3000 times, which indicates that the thermal barrier coating of the present invention has excellent scrub resistance.
(7) Drying time test
The thermal insulation coating of the embodiment is tested according to GB/T1728-1979 for drying time which is less than 2h and meets the standard requirement.
Example 2
1. Weighing the following raw materials in proportion:
30g of water-based acrylic emulsion;
10g of titanium dioxide;
5g of talcum powder;
20g of modified shell powder;
3g of wetting agent;
3g of a dispersing agent;
3g of defoaming agent;
3g of film-forming additive;
23g of water.
The coating preparation of this example was carried out according to the preparation procedure of example 1, using modified seashells which were heated to 100 ℃ at a rate of 1 ℃/min in an oxygen atmosphere and held for 5 hours, and then furnace cooled.
The solar reflectance of the modified shell powder in the embodiment in visible light band (420 nm-720 nm) and near infrared band (720 nm-2500 nm) reaches 91%, while the reflectance of the unmodified shell powder is only 78%. The solar reflectance of the reflective heat-insulating coating in the embodiment in a visible light wave band (420 nm-720 nm) and a near infrared wave band (720 nm-2500 nm) reaches 85%. The adhesive force is grade 1, no abnormity occurs in 96h of a water resistance test, and no foaming, no peeling and no crack occur in 500h of a weather resistance test. The washing resistance test is 3200 times, the bottom is not exposed, the drying time is less than 2 hours, the requirements of relevant standards are met, and the heat insulation performance of the paint is superior to that of the heat insulation paint sold in the market.
example 3
1. Weighing the following raw materials in proportion:
35g of water-based acrylic emulsion;
20g of titanium dioxide;
3g of talcum powder;
14g of modified shell powder;
1g of wetting agent;
0.5g of dispersing agent;
1g of defoaming agent;
0.5g of film-forming assistant;
25g of water.
the coating preparation of this example was carried out according to the preparation procedure of example 1, using modified shells which were heated to 500 ℃ at a rate of 10 ℃/min in an oxygen atmosphere and held for 3 hours, and then furnace cooled.
the solar reflectance of the modified shell powder in the embodiment in visible light band (420 nm-720 nm) and near infrared band (720 nm-2500 nm) reaches 94%, while the reflectance of the unmodified shell powder is only 78%. The solar reflectance of the reflective heat-insulating coating in the embodiment in a visible light wave band (420 nm-720 nm) and a near infrared wave band (720 nm-2500 nm) reaches 89%. The adhesive force is grade 1, no abnormity occurs in 96h of a water resistance test, and no foaming, no peeling and no crack occur in 500h of a weather resistance test. The washing resistance test is 3500 times, the bottom is not exposed, the drying time is less than 2 hours, the coating meets the relevant standard requirements, and the heat insulation performance of the coating is superior to that of the commercial heat insulation coating.
Example 4
1. Weighing the following raw materials in proportion:
40g of water-based acrylic emulsion;
13g of titanium dioxide;
2g of talcum powder;
18g of modified shell powder;
5g of wetting agent;
0.5g of dispersing agent;
0.5g of defoaming agent;
1g of film-forming additive;
20g of water.
The coating preparation of this example was carried out according to the preparation procedure of example 1, using modified seashells which were heated to 300 ℃ at a rate of 15 ℃/min in atmospheric air, and held for 1 hour, and then furnace cooled.
The solar reflectance of the modified shell powder in the embodiment in visible light band (420 nm-720 nm) and near infrared band (720 nm-2500 nm) reaches 95%, while the reflectance of the unmodified shell powder is only 78%. The solar reflectance of the reflective heat-insulating coating in the embodiment in a visible light wave band (420 nm-720 nm) and a near infrared wave band (720 nm-2500 nm) reaches 87%. The adhesive force is grade 1, no abnormity occurs in 96h of a water resistance test, and no foaming, no peeling and no crack occur in 500h of a weather resistance test. The washing and brushing resistance test is 3300 times, the bottom is not exposed, the drying time is less than 2h, the related standard requirements are met, and the heat insulation performance of the paint is superior to that of the heat insulation paint sold in the market.
Claims (3)
1. the preparation method of the reflective thermal insulation coating material is characterized in that the reflective thermal insulation coating material comprises the following components in percentage by mass:
wherein: the preparation process of the modified shell powder comprises the following steps: calcining the shell powder at the temperature rising speed of 1-20 ℃/min for 0.5-5h at the temperature of 100-1000 ℃, wherein the calcining atmosphere is an atmospheric atmosphere or an oxygen atmosphere, and the particle size of the shell powder is less than 10 mu m;
the particle size of the titanium dioxide is 0.05-1 mu m;
The talcum powder is magnesium silicate powder with the grain diameter of 0.1-100 mu m;
The solid content of the water-based acrylic emulsion is 40-50 percent;
the wetting agent is an acrylic wetting agent; the dispersant is fatty acid dispersant; the defoaming agent is a high-carbon alcohol defoaming agent; the film-forming auxiliary agent is an alcohol ether film-forming auxiliary agent;
The preparation method specifically comprises the following steps:
a. Weighing raw materials according to the mass ratio of each component in the reflective heat-insulation coating material;
b. Adding titanium dioxide, modified shell powder, a wetting agent, a dispersing agent, a defoaming agent and water into the water-based acrylic emulsion, and then grinding and dispersing uniformly at room temperature to obtain a mixture;
c. and adding talcum powder and a film forming aid into the mixture, and uniformly stirring to obtain the reflective heat-insulating coating material.
2. the method for preparing a reflective thermal barrier coating material according to claim 1, wherein: the grinding and dispersing in the step b is to grind and stir at a speed of 500 to 1500r/min by using a grinding and dispersing stirrer.
3. the method for preparing a reflective thermal barrier coating material according to claim 1, wherein: the stirring in the step c is to grind and stir the mixture by a grinding and dispersing stirrer at a speed of 500 to 1500 r/min.
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| CN108410302A (en) * | 2018-02-28 | 2018-08-17 | 南通苏东新型外墙保温板有限公司 | A kind of nano anti-corrosive thermal insulation coatings |
| CN108264812A (en) * | 2018-02-28 | 2018-07-10 | 南通苏东新型外墙保温板有限公司 | A kind of nano thermal insulation coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597449A (en) * | 2008-06-03 | 2009-12-09 | 郭建新 | Waterborne reflective heat-insulating building coating and preparation method thereof |
| CN102718247A (en) * | 2012-06-06 | 2012-10-10 | 李静 | Calcium powder and preparation method thereof |
| CN104212284A (en) * | 2014-10-07 | 2014-12-17 | 江阴延利汽车饰件股份有限公司 | Reflective thermal insulation coating for car window |
| CN105199439A (en) * | 2015-10-13 | 2015-12-30 | 谢军 | Preparation method for anti-bacteria and anti-mildew environment-friendly paint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102977695B (en) * | 2012-12-04 | 2014-09-24 | 中国科学院烟台海岸带研究所 | Environment-friendly interior wall coating material with calcined shell powder as base stock and preparation method of environment-friendly interior wall coating material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597449A (en) * | 2008-06-03 | 2009-12-09 | 郭建新 | Waterborne reflective heat-insulating building coating and preparation method thereof |
| CN102718247A (en) * | 2012-06-06 | 2012-10-10 | 李静 | Calcium powder and preparation method thereof |
| CN104212284A (en) * | 2014-10-07 | 2014-12-17 | 江阴延利汽车饰件股份有限公司 | Reflective thermal insulation coating for car window |
| CN105199439A (en) * | 2015-10-13 | 2015-12-30 | 谢军 | Preparation method for anti-bacteria and anti-mildew environment-friendly paint |
Non-Patent Citations (1)
| Title |
|---|
| 复合型反射隔热涂料的制备与性能研究;邢俊等;《水性涂料与涂装》;20091231;第24卷(第9期);第37-43页 * |
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