WO2024007355A1 - 一种防沉降型水性隔热涂料及其制备方法 - Google Patents
一种防沉降型水性隔热涂料及其制备方法 Download PDFInfo
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- WO2024007355A1 WO2024007355A1 PCT/CN2022/105333 CN2022105333W WO2024007355A1 WO 2024007355 A1 WO2024007355 A1 WO 2024007355A1 CN 2022105333 W CN2022105333 W CN 2022105333W WO 2024007355 A1 WO2024007355 A1 WO 2024007355A1
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- WIPO (PCT)
- Prior art keywords
- water
- acrylic emulsion
- insulating coating
- coating
- thickener
- Prior art date
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- 238000000576 coating method Methods 0.000 title claims abstract description 63
- 239000011248 coating agent Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000000839 emulsion Substances 0.000 claims abstract description 56
- 239000002562 thickening agent Substances 0.000 claims abstract description 31
- 239000012767 functional filler Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- 239000012752 auxiliary agent Substances 0.000 claims abstract 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 37
- 238000009413 insulation Methods 0.000 claims description 37
- 239000000654 additive Substances 0.000 claims description 29
- 239000000203 mixture Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 14
- 238000004062 sedimentation Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 11
- 239000002518 antifoaming agent Substances 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 10
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 10
- 229920002401 polyacrylamide Polymers 0.000 claims description 10
- 239000004626 polylactic acid Substances 0.000 claims description 10
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 10
- 239000000080 wetting agent Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 7
- 239000011324 bead Substances 0.000 claims description 7
- 239000013538 functional additive Substances 0.000 claims description 6
- 239000010445 mica Substances 0.000 claims description 6
- 229910052618 mica group Inorganic materials 0.000 claims description 6
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims 1
- 150000001408 amides Chemical class 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 238000010525 oxidative degradation reaction Methods 0.000 abstract description 8
- 238000003860 storage Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 11
- 229920000642 polymer Polymers 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 229920001296 polysiloxane Polymers 0.000 description 8
- 239000003973 paint Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 3
- 229920000891 common polymer Polymers 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 3
- 238000004078 waterproofing Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920000867 polyelectrolyte Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 125000000542 sulfonic acid group Chemical group 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007777 multifunctional material Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
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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
- C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
-
- 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
- C09D143/00—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 containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Definitions
- the invention belongs to the technical field of coating preparation, and specifically relates to an anti-settlement water-based heat-insulating coating and a preparation method thereof.
- Water-based thermal insulation coatings are mainly composed of acrylic emulsions, water-based additives, functional fillers and other materials. This type of water-based coating has the advantages of both waterproofing and heat insulation.
- the coating formed after coating is often highly dense and has good adhesion. Strong, by adjusting the proportion of functional filler and emulsion, it can meet the requirements of different projects for coating film strength and flexibility. It is an energy-saving product that has developed rapidly in recent years.
- Water-based thermal insulation coatings are widely used in thermal insulation projects in buildings, bridges, transportation, offshore drilling platforms, chemical storage tanks, oil pipelines and other fields. Since this type of material requires good thermal insulation properties, a large amount of functional fillers such as ceramic beads, thermal insulation powder, and titanium dioxide are added to the components, and the fillers need to be evenly suspended and dispersed in the coating using water as the solvent.
- the system is required to have a certain viscosity, and the usual method is to add a thickener to make it have certain storage stability.
- long-term storage in a high-temperature environment will affect the storage stability of the paint. This is because the viscosity of the paint system will gradually decrease as the temperature increases, causing the filler to settle and cause paint delamination.
- the thickener in the present invention uses an amphoteric hydrophobic associative polymer. Research has found that this polymer has remarkable temperature resistance and good salt resistance. It is used in water-based heat insulation coatings. It can improve the viscosity stability of coatings at high temperatures, but it has poor oxidation resistance and is prone to oxidative degradation during coating preparation and storage, affecting the viscosity and other properties of the coating.
- the purpose of the present invention is to provide an anti-settlement water-based heat-insulating coating and a preparation method thereof.
- the water-based heat-insulating coating prepared by the method has the characteristics of heat insulation and waterproofing, and can be used in high-temperature environments. It has stable viscosity, good salt resistance, and resistance to oxidative degradation. During the preparation and storage process, the viscosity and other properties of the coating will not be affected by oxidative degradation.
- An anti-sedimentation water-based thermal insulation coating the raw material components include the following mass percentage: acrylic emulsion 30.0-40.0%, water-based additives 10.0-15.0%, thickener 1.0-2.0%, functional filler 30.0-35.0 %, the balance is water.
- its raw material components include the following mass percentages: 30.0% acrylic emulsion, 15.0% water-based additives, 1.0% thickener, 35.0% functional filler, and the balance is water.
- the raw material components of the coating also include polylactic acid, accounting for 1.5-3.0% of the mass of the coating, preferably 2.0% of the mass of the coating.
- the acrylic emulsion is a pure acrylic emulsion, a styrene-acrylic emulsion, a silicone-acrylic emulsion or an emulsion formed by a combination thereof.
- the compound mass percentage of pure acrylic emulsion, styrene acrylic emulsion and silicone acrylic emulsion in the acrylic emulsion is: pure acrylic emulsion 20-30%, styrene acrylic emulsion 30-40%, silicone acrylic emulsion 30-40 %.
- the water-based additives include dispersants, defoaming agents, film-forming additives, multifunctional additives and wetting agents, wherein the mass ratio between the components is: dispersant 4.0-6.0%, defoaming agent 1.0-2.0% of agent, 3.0-4.0% of film-forming additive, 1.0-1.5% of multi-functional additive and 1.0-1.5% of wetting agent.
- the thickener is sulfonate type amphoteric hydrophobically associated polyacrylamide powder or other modified amphoteric hydrophobically associated polyacrylamide powder.
- the functional fillers are hollow ceramic beads, heat insulation powder and mica powder;
- the hollow ceramic particles are made of titanium-borosilicate raw materials through high-tech processing, and the hollow ceramic particles are white spherical, Ultra-fine hollow ceramic particles with a hard shell and an average particle size of 18.4 ⁇ m.
- the mass proportions of the functional filler components are: 15.0-20.0% hollow ceramic beads, 8.0-12.0% heat insulation powder and 3.0-7.0% mica powder.
- a preparation method of anti-settlement water-based thermal insulation coating including the following steps:.
- step 3 Put the liquid component obtained in step 1) into a high-speed disperser with a rotation speed of 1000r/min and stir at high speed. While stirring, slowly pour the solid component obtained in step 2) until the two are fully mixed. A solid-liquid mixture is obtained;.
- step 4) Put the viscous solid-liquid mixture obtained in step 3) into a high-speed disperser with a rotation speed of 100-200r/min for low-speed stirring. After the bubbles are gradually eliminated, an anti-settlement water-based thermal insulation coating is obtained.
- the beneficial effects of the present invention are: (1)
- the water-based heat-insulating coating prepared by the present invention has the characteristics of heat insulation and waterproofing, and has stable viscosity in high temperature environments, good salt resistance, and can resist oxidation and degradation. During the preparation and storage process, It will not affect the viscosity and other properties of the coating due to oxidative degradation;.
- the polymer thickener selected in the present invention is sulfonate type hydrophobically associated amphoteric polyacrylamide.
- hydrophobically associated amphoteric polyacrylamide By introducing sulfonic acid groups into the hydrophobically associated amphoteric polyacrylamide, its temperature resistance stability is improved and reused.
- the anti-polyelectrolyte effect of hydrophobically associated amphoteric polyacrylamide prevents the viscosity of water-based thermal insulation coatings containing polyacrylamide polymer thickeners from decreasing due to salt sensitivity effects, effectively improving the performance of water-based thermal insulation coating products in high-temperature environments. (Over 35°C) During long-term placement, the viscosity of the coating system will decrease as the temperature increases, causing the filler to settle and cause paint delamination.
- the amphoteric hydrophobic associative polymer used in the present invention is due to the presence of both cationic groups and anionic groups in the polymer molecular chain.
- the volume of the polymer molecules expands through the anti-polyelectrolyte effect of the amphoteric polymer.
- the thickening effect is achieved, and the volume expansion under high temperature conditions is not affected by the introduction of temperature-resistant cationic groups (sulfonic acid groups), that is, the thickening effect is not affected; however, the polymer is prepared It is easy to be oxidized and degraded when stored. Oxidative free radicals will break the carbon chain in the polymer and cause oxidative degradation of the polymer.
- the present invention also adds polylactic acid as an antioxidant additive, and polylactic acid is used as a solid component in the coating.
- polylactic acid is used as a solid component in the coating.
- it When mixed with liquid components during preparation, it will form a film when exposed to water, forming a tough film in the coating to cover the surface to prevent oxidative degradation and solve the above technical problems;
- the present invention uses hollow ceramic particles as fillers, which are loose, fluid, hollow, a lightweight non-metallic multi-functional material with a hard shell, and are not fragile during high-pressure spraying construction; the preparation method of the present invention It is simple and easy to operate, the system is environmentally friendly, and it is suitable for industrial mass production.
- Figure 1 shows the change curve of the influence of temperature on the viscosity stability of the system.
- An anti-sedimentation water-based heat-insulating coating whose raw material components include the following mass percentages: 30.0% acrylic emulsion, 15.0% water-based additives, 1.0% thickener, 35.0% functional filler, and 19.0% water.
- the paint raw material components also include polylactic acid, accounting for 2.0% of the paint mass.
- a preparation method of anti-settlement water-based thermal insulation coating including the following steps:.
- the acrylic emulsion is a mixture of pure acrylic emulsion, styrene acrylic emulsion and silicone acrylic emulsion.
- the compound mass percentage of the formed emulsion is: 20% pure acrylic emulsion, 40% styrene acrylic emulsion, 40% silicone acrylic emulsion;
- the water-based additives include dispersants, defoaming agents, film-forming additives, and multi-functional additives.
- Agent and wetting agent the mass proportions of the components are: dispersant 6.0%, defoaming agent 2.0%, film-forming additive 4.0%, multifunctional additive 1.5% and wetting agent 1.5%;.
- the thickener, functional filler and polylactic acid are fully and evenly mixed to obtain a solid component.
- the thickener is sulfonate type amphoteric hydrophobically associated polyacrylamide powder.
- the functional filler is The mass ratio of each component of the elastic filler is: 20.0% hollow ceramic beads, 10.0% heat insulation powder and 5.0% mica powder.
- step 3 Put the liquid component obtained in step 1) into a high-speed disperser with a rotation speed of 1000r/min and stir at high speed. While stirring, slowly pour the solid component obtained in step 2) until the two are fully mixed. A solid-liquid mixture is obtained;.
- step 4) Put the viscous solid-liquid mixture obtained in step 3) into a high-speed disperser with a rotation speed of 100r/min for low-speed stirring. After the bubbles are gradually eliminated, an anti-settlement water-based thermal insulation coating is obtained.
- An anti-sedimentation water-based thermal insulation coating the raw material components include the following mass percentages: 35.0% acrylic emulsion, 12.5% water-based additives, 1.5% thickener, 30.0% functional filler, and 21.0% water.
- a preparation method of anti-settlement water-based thermal insulation coating including the following steps:.
- the acrylic emulsion is a mixture of pure acrylic emulsion, styrene acrylic emulsion and silicone acrylic emulsion.
- the compound mass percentage of the formed emulsion is: 30% pure acrylic emulsion, 30% styrene acrylic emulsion, 40% silicone acrylic emulsion;
- the water-based additives include dispersants, defoaming agents, film-forming additives, and multi-functional additives.
- Agent and wetting agent the mass proportions of the components are: dispersant 6.0%, defoaming agent 1.0%, film-forming additive 3.0%, multifunctional additive 1.0% and wetting agent 1.5%;.
- the thickener, functional filler and polylactic acid are fully and evenly mixed to obtain a solid component.
- the thickener is sulfonate type amphoteric hydrophobically associated polyacrylamide powder.
- the functional filler is The mass proportions of the various components of the flexible filler are: 15.0% hollow ceramic beads, 12.0% thermal insulation powder and 3.0% mica powder.
- step 3 Put the liquid component obtained in step 1) into a high-speed disperser with a rotation speed of 1000r/min and stir at high speed. While stirring, slowly pour the solid component obtained in step 2) until the two are fully mixed. A solid-liquid mixture is obtained;.
- step 4) Put the viscous solid-liquid mixture obtained in step 3) into a high-speed disperser with a rotation speed of 200r/min for low-speed stirring. After the bubbles are gradually eliminated, an anti-settlement water-based thermal insulation coating is obtained.
- An anti-sedimentation water-based thermal insulation coating the raw material components include the following mass percentages: 40.0% acrylic emulsion, 10.0% water-based additives, 2.0% thickener, 32.0% functional filler, and 16.0% water.
- a preparation method of anti-settlement water-based thermal insulation coating including the following steps:.
- the acrylic emulsion is a mixture of pure acrylic emulsion, styrene acrylic emulsion and silicone acrylic emulsion.
- the compound mass percentage of the formed emulsion is: 25% pure acrylic emulsion, 40% styrene acrylic emulsion, 35% silicone acrylic emulsion;
- the water-based additives include dispersants, defoaming agents, film-forming additives, and multi-functional additives.
- Agent and wetting agent the mass proportions of the components are: dispersant 4.0%, defoaming agent 1.0%, film-forming additive 3.0%, multi-functional additive 1.0% and wetting agent 1.0%;.
- the thickener, functional filler and polylactic acid are fully and evenly mixed to obtain a solid component.
- the thickener is sulfonate type amphoteric hydrophobically associated polyacrylamide powder.
- the functional filler is The mass proportions of the various components of the flexible filler are: 17.0% hollow ceramic beads, 8.0% thermal insulation powder and 7.0% mica powder.
- step 3 Put the liquid component obtained in step 1) into a high-speed disperser with a rotation speed of 1000r/min and stir at high speed. While stirring, slowly pour the solid component obtained in step 2) until the two are fully mixed. A solid-liquid mixture is obtained;.
- step 4 Put the viscous solid-liquid mixture obtained in step 3) into a high-speed disperser with a rotation speed of 130r/min for low-speed stirring. After the bubbles are gradually eliminated, an anti-settlement water-based thermal insulation coating is obtained.
- Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that the thickener in the raw material composition of the coating is a common polymer thickener, specifically hydroxyethyl cellulose, to replace the original thickener.
- the thickener in the raw material composition of the coating is a common polymer thickener, specifically hydroxyethyl cellulose, to replace the original thickener.
- Comparative Example 2 The difference between Comparative Example 2 and Example 2 is that the thickener in the raw material composition of the coating is a common polymer thickener, specifically hydroxyethyl cellulose, to replace the original thickener.
- the thickener in the raw material composition of the coating is a common polymer thickener, specifically hydroxyethyl cellulose, to replace the original thickener.
- Comparative Example 3 The difference between Comparative Example 3 and Example 3 is that the thickener in the raw material composition of the coating is a common polymer thickener, specifically hydroxyethyl cellulose, to replace the original thickener.
- the thickener in the raw material composition of the coating is a common polymer thickener, specifically hydroxyethyl cellulose, to replace the original thickener.
- Example 1 In order to test the thermal insulation effect of the anti-settlement water-based thermal insulation coating, the sample prepared in Example 1 was selected to conduct an on-site thermal insulation effect evaluation test on the outer wall of the heating furnace of a branch of Sinopec.
- the test content included surface temperature, ambient temperature, wind speed, etc.
- all test data were converted to 27°C, windless conditions, and Table 1 was obtained after processing and analysis.
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Abstract
一种防沉降型水性隔热涂料，属于涂料制备技术领域，其原料组分包括以下质量百分比：丙烯酸酯类乳液30.0-40.0％，水性助剂10.0-15.0％，增稠剂1.0-2.0％，功能性填料30.0-35.0％，余量为水；一种防沉降型水性隔热涂料的制备方法，该方法制备得到的水性隔热涂料具有隔热、防水的特点，且在高温环境下粘度稳定，耐盐性能好，能抗氧化降解，在制备和保存过程中不会因氧化降解影响涂料的粘度等性能。
Description
本发明属于涂料制备技术领域，具体涉及一种防沉降型水性隔热涂料及其制备方法。
水性隔热涂料主要由丙烯酸酯类乳液、水性助剂和功能性填料等材料构成，该类水性涂料兼具防水和隔热的优点，涂覆后形成的涂层往往密实度高、粘结力强，通过调节功能性填料和乳液的比例，可以满足不同工程对涂膜强度和柔韧性的要求，是近几年来发展较快的一种节能产品。
水性隔热涂料广泛适用于建筑、桥梁、交通、海上钻井平台，化工储罐，石油管道等领域的保温隔热工程。由于该类材料需要较好的隔热性能，因此会在组分中大量添加陶瓷微珠、隔热粉、钛白粉等功能性填料，而填料需要在以水为溶剂的涂料中均匀悬浮分散，则要求体系具有一定的粘度，通常方法就是加入增稠剂，使其具有一定储存稳定性。但在高温环境长时间放置过程中，会影响涂料的储存稳定性，那是因为随着温度的升高涂料体系粘度会逐渐下降，导致填料发生沉降而出现涂料分层现象。
为了解决上述技术问题，本发明中增稠剂采用的是两性疏水缔合聚合物，该聚合物经研究发现其耐温性能效果显著，耐盐性能也好，将其用于水性隔热涂料，可以提高在高温中涂料的粘度稳定性，但其在抗氧化性上性能差，在涂料制备及保存过程中容易氧化降解，影响涂料粘度及其他性能。
针对现有技术中存在的问题，本发明的目的在于提供一种防沉降型水性隔热涂料及其制备方法，该方法制备得到的水性隔热涂料具有隔热、防水的特点，且在高温环境下粘度稳定，耐盐性能好，能抗氧化降解，在制备和保存过程中不会因氧化降解影响涂料的粘度等性能。
为实现以上目的，本发明采取的技术方案是：。
一种防沉降型水性隔热涂料，其原料组分包括以下质量百分比：丙烯酸酯类乳液30.0-40.0%，水性助剂10.0-15.0%，增稠剂1.0-2.0%，功能性填料30.0-35.0%，余量为水。
优选地，其原料组分包括以下质量百分比：丙烯酸酯类乳液30.0%，水性助剂15.0%，增稠剂1.0%，功能性填料35.0%，余量为水。
进一步地，所述涂料原料组分还包括聚乳酸，占涂料质量的1.5-3.0%，优选地，占涂料质量的2.0%。
进一步地，所述丙烯酸酯类乳液为纯丙乳液、苯丙乳液、硅丙乳液或中间几种复配而形成的乳液。
进一步地，所述丙烯酸酯类乳液中纯丙乳液、苯丙乳液、硅丙乳液的复配质量百分比为：纯丙乳液20-30%、苯丙乳液30-40%、硅丙乳液30-40%。
进一步地，所述水性助剂包括分散剂、消泡剂、成膜助剂、多功能助剂和润湿剂，其中组分之间的质量占比是：分散剂4.0-6.0%、消泡剂1.0-2.0%、成膜助剂3.0-4.0%、多功能助剂1.0-1.5%和润湿剂1.0-1.5%。
进一步地，所述增稠剂为磺酸盐型两性疏水缔合聚丙烯酰胺粉体或其它改性两性疏水缔合聚丙烯酰胺粉体。
进一步地，所述功能性填料为中空陶瓷微珠、隔热粉和云母粉；其中中空陶瓷微粒是由钛—硼硅酸盐原料经高科技加工而成，所述中空陶瓷微粒为白色球状、有坚硬外壳、平均粒径为18.4μm的超细中空陶瓷微粒。
进一步地，所述功能性填料各组分之间的质量占比为：中空陶瓷微珠15.0-20.0%、隔热粉8.0-12.0%和云母粉3.0-7.0%。
一种防沉降型水性隔热涂料的制备方法，包括以下步骤：。
1）按上述质量百分比，将丙烯酸酯类乳液、水性助剂及余量的水充分混合均匀，得到液体组分；。
2）按上述质量百分比，将增稠剂、功能性填料以及聚乳酸充分均匀混合，得到固体组分；。
3）将步骤1）中得到的液体组分放入转速为1000r/min的高速分散机中进行高速搅拌，边搅拌边缓慢倒入步骤2）中得到的固体组分，待两者充分混合后得到固液混合物；。
4）将步骤3）得到的粘稠固液混合物放入转速为100-200r/min的高速分散机进行低速搅拌，待气泡逐渐消除后得到防沉降型水性隔热涂料。
本发明的有益效果是：（1）本发明制备得到的水性隔热涂料具有隔热、防水的特点，且在高温环境下粘度稳定，耐盐性能好，能抗氧化降解，在制备和保存过程中不会因氧化降解影响涂料的粘度等性能；。
（2）本发明选用的聚合物增稠剂为磺酸盐型疏水缔合两性聚丙烯酰胺，通过在疏水缔合两性聚丙烯酰胺中引入磺酸基团，提高其耐温稳定性，再利用疏水缔合两性聚丙烯酰胺的反聚电解质效应，使含聚丙烯酰胺类聚合物增稠剂的水性隔热涂料粘度不会因为盐敏效应而降低，有效地改善水性隔热涂料产品在高温环境（超过35℃）长时间放置过程中，随着温度的升高涂料体系粘度会下降，导致填料发生沉降而出现涂料分层的问题；。
（3）本发明采用的两性疏水缔合聚合物是由于聚合物分子链中同时存在阳离子基团和阴离子基团，在盐溶液中通过两性聚合物的反聚电解质效应使聚合物分子体积膨胀，从而达到增稠作用，而又通过引入抗温性的阳离子基团（磺酸基团）使其在高温条件下体积膨胀不受影响，也就是增稠作用不受影响；但是该聚合物在制备和保存时容易氧化降解，其中氧化自由基会使聚合物中碳碳链断裂致使聚合物氧化降解，因此，本发明还加入聚乳酸作为抗氧化助剂，聚乳酸在涂料中作为固体组分，在制备中与液体组分混合，则会遇水成膜，在涂料中形成坚韧的薄膜覆在表面，用以阻挡氧化降解，解决上述技术问题；。
（4）本发明采用了中空陶瓷微粒作为填料，其松散、流动性好、中空、是一种有坚硬外壳的轻质非金属多功能材料，在高压喷涂施工过程中不易碎；本发明制备方法简单、易操作，体系环保，适于工业大批量生产。
图1为温度对体系粘度稳定性影响变化曲线。
实施例1：。
一种防沉降型水性隔热涂料，其原料组分包括以下质量百分比：丙烯酸酯类乳液30.0%，水性助剂15.0%，增稠剂1.0%，功能性填料35.0%，水19.0%。所述涂料原料组分还包括聚乳酸，占涂料质量的2.0%。
一种防沉降型水性隔热涂料的制备方法，包括以下步骤：。
1）按上述质量百分比，将丙烯酸酯类乳液、水性助剂及余量的水充分混合均匀，得到液体组分，所述丙烯酸酯类乳液为纯丙乳液、苯丙乳液、硅丙乳液复配而形成的乳液，复配质量百分比为：纯丙乳液20%、苯丙乳液40%、硅丙乳液40%；所述水性助剂包括分散剂、消泡剂、成膜助剂、多功能助剂和润湿剂，其中组分之间的质量占比是：分散剂6.0%、消泡剂2.0%、成膜助剂4.0%、多功能助剂1.5%和润湿剂1.5%；。
2）按上述质量百分比，将增稠剂、功能性填料以及聚乳酸充分均匀混合，得到固体组分，所述增稠剂为磺酸盐型两性疏水缔合聚丙烯酰胺粉体，所述功能性填料各组分之间的质量占比为：中空陶瓷微珠20.0%、隔热粉10.0%和云母粉5.0%；。
3）将步骤1）中得到的液体组分放入转速为1000r/min的高速分散机中进行高速搅拌，边搅拌边缓慢倒入步骤2）中得到的固体组分，待两者充分混合后得到固液混合物；。
4）将步骤3）得到的粘稠固液混合物放入转速为100r/min的高速分散机进行低速搅拌，待气泡逐渐消除后得到防沉降型水性隔热涂料。
为了更好地理解本发明，下面结合实施例对本发明的实施方案进行详细描述，但是本领域技术人员将会理解，下列实施例仅用于说明本发明，而不应视为限制本发明的范围。
实施例2：。
一种防沉降型水性隔热涂料，其原料组分包括以下质量百分比：丙烯酸酯类乳液35.0%，水性助剂12.5%，增稠剂1.5%，功能性填料30.0%，水21.0%。
一种防沉降型水性隔热涂料的制备方法，包括以下步骤：。
1）按上述质量百分比，将丙烯酸酯类乳液、水性助剂及余量的水充分混合均匀，得到液体组分，所述丙烯酸酯类乳液为纯丙乳液、苯丙乳液、硅丙乳液复配而形成的乳液，复配质量百分比为：纯丙乳液30%、苯丙乳液30%、硅丙乳液40%；所述水性助剂包括分散剂、消泡剂、成膜助剂、多功能助剂和润湿剂，其中组分之间的质量占比是：分散剂6.0%、消泡剂1.0%、成膜助剂3.0%、多功能助剂1.0%和润湿剂1.5%；。
2）按上述质量百分比，将增稠剂、功能性填料以及聚乳酸充分均匀混合，得到固体组分，所述增稠剂为磺酸盐型两性疏水缔合聚丙烯酰胺粉体，所述功能性填料各组分之间的质量占比为：中空陶瓷微珠15.0%、隔热粉12.0%和云母粉3.0%；。
3）将步骤1）中得到的液体组分放入转速为1000r/min的高速分散机中进行高速搅拌，边搅拌边缓慢倒入步骤2）中得到的固体组分，待两者充分混合后得到固液混合物；。
4）将步骤3）得到的粘稠固液混合物放入转速为200r/min的高速分散机进行低速搅拌，待气泡逐渐消除后得到防沉降型水性隔热涂料。
实施例3：。
一种防沉降型水性隔热涂料，其原料组分包括以下质量百分比：丙烯酸酯类乳液40.0%，水性助剂10.0%，增稠剂2.0%，功能性填料32.0%，水16.0%。
一种防沉降型水性隔热涂料的制备方法，包括以下步骤：。
1）按上述质量百分比，将丙烯酸酯类乳液、水性助剂及余量的水充分混合均匀，得到液体组分，所述丙烯酸酯类乳液为纯丙乳液、苯丙乳液、硅丙乳液复配而形成的乳液，复配质量百分比为：纯丙乳液25%、苯丙乳液40%、硅丙乳液35%；所述水性助剂包括分散剂、消泡剂、成膜助剂、多功能助剂和润湿剂，其中组分之间的质量占比是：分散剂4.0%、消泡剂1.0%、成膜助剂3.0%、多功能助剂1.0%和润湿剂1.0%；。
2）按上述质量百分比，将增稠剂、功能性填料以及聚乳酸充分均匀混合，得到固体组分，所述增稠剂为磺酸盐型两性疏水缔合聚丙烯酰胺粉体，所述功能性填料各组分之间的质量占比为：中空陶瓷微珠17.0%、隔热粉8.0%和云母粉7.0%；。
3）将步骤1）中得到的液体组分放入转速为1000r/min的高速分散机中进行高速搅拌，边搅拌边缓慢倒入步骤2）中得到的固体组分，待两者充分混合后得到固液混合物；。
4）将步骤3）得到的粘稠固液混合物放入转速为130r/min的高速分散机进行低速搅拌，待气泡逐渐消除后得到防沉降型水性隔热涂料。
对比例1：。
对比例1与实施例1的不同之处在于，涂料原料组成中增稠剂为普通聚合物增稠剂，具体为羟乙基纤维素，用以替换原有增稠剂。
对比例2：。
对比例2与实施例2的不同之处在于，涂料原料组成中增稠剂为普通聚合物增稠剂，具体为羟乙基纤维素，用以替换原有增稠剂。
对比例3：。
对比例3与实施例3的不同之处在于，涂料原料组成中增稠剂为普通聚合物增稠剂，具体为羟乙基纤维素，用以替换原有增稠剂。
1. 耐温稳定性试验。
将实施例1、2、3和对比例1、2、3所制得的水性隔热涂料各个样品在20℃条件下分别测得其粘度，然后分别将其密封放置在25℃、30℃、35℃、40℃、45℃烘箱中持续老化1个月时间，分别测的各个样品的粘度；结果如图1所示。
从图1耐温稳定性评价结果中证实在25℃至45℃实施例1、实施例2和实施例3粘度随温度上升，平缓降低，粘度损失不超过10%，而对比例1、对比例2和对比例3粘度随温度上升，急剧降低，粘度损失从超过45%，实施例耐温稳定性远超对比例。
2.隔热效果试验。
为了测试防沉降型水性隔热涂料隔热效果，选择实施例1制得的样品在中石化某分公司加热炉外壁进行了现场隔热效果评价试验，测试内容含表面温度、环境温度和风速等，依据标准《GB/T
8174-2008 设备及管道绝热效果的测试与评价》和《SH/T 3036-2012 一般炼油装置用火焰加热炉》，所有测试数据换算成27℃、无风条件，经处理分析得到表1。
表1 实施例1在中石化某分公司加热炉现场应用测试效果
。
从表1中测试数据来看：炉外壁选取试验区域部位涂刷保温涂料后平均刷涂厚度为2.34mm，平均换算温度从108.9℃降低至80.1℃，热流密度从951.97降低至617.92W/m
2,隔热效果明显。
上述对实施例的描述是为了便于该技术领域的普通技术人员理解和使用本发明。熟悉本领域的技术人员可以容易地对这些实施例做出各种修改，并把在此说明的一般原理应用到其他实施例中，而不必经过创造性的劳动。因此，本发明不限于上述实施例。本领域技术人员根据本发明的原理，不脱离本发明的范畴所做出的改进和修改都应该在本发明的保护范围之内。
Claims (8)
- 一种防沉降型水性隔热涂料，其特征在于，其原料组分包括以下质量百分比：丙烯酸酯类乳液30.0-40.0%，水性助剂10.0-15.0%，增稠剂1.0-2.0%，功能性填料30.0-35.0%，余量为水。
- 根据权利要求1所述的一种防沉降型水性隔热涂料，其特征在于，其原料组分包括以下质量百分比：丙烯酸酯类乳液30.0%，水性助剂15.0%，增稠剂1.0%，功能性填料35.0%，余量为水。
- 根据权利要求1所述的一种防沉降型水性隔热涂料，其特征在于，所述涂料原料组分还包括聚乳酸，占涂料质量的1.5-3.0%，优选地，占涂料质量的2.0%。
- 根据权利要求1所述的一种防沉降型水性隔热涂料，其特征在于，所述丙烯酸酯类乳液为纯丙乳液、苯丙乳液、硅丙乳液或中间几种复配而形成的乳液。
- 根据权利要求1所述的一种防沉降型水性隔热涂料，其特征在于，所述水性助剂包括分散剂、消泡剂、成膜助剂、多功能助剂和润湿剂，其中组分之间的质量占比是：分散剂4.0-6.0%、消泡剂1.0-2.0%、成膜助剂3.0-4.0%、多功能助剂1.0-1.5%和润湿剂1.0-1.5%。
- 根据权利要求1所述的一种防沉降型水性隔热涂料，其特征在于，所述增稠剂为磺酸盐型两性疏水缔合聚丙烯酰胺粉体或其它改性两性疏水缔合聚丙烯酰胺粉体。
- 根据权利要求1所述的一种防沉降型水性隔热涂料，其特征在于，所述功能性填料为中空陶瓷微珠、隔热粉和云母粉；其中中空陶瓷微粒是由钛—硼硅酸盐原料经高科技加工而成，所述中空陶瓷微粒为白色球状、有坚硬外壳、平均粒径为18.4μm的超细中空陶瓷微粒。
- 根据权利要求1所述的一种防沉降型水性隔热涂料的制备方法，其特征在于，包括以下步骤：1）按上述质量百分比，将丙烯酸酯类乳液、水性助剂及余量的水充分混合均匀，得到液体组分；2）按上述质量百分比，将增稠剂、功能性填料以及聚乳酸充分均匀混合，得到固体组分；3）将步骤1）中得到的液体组分放入转速为1000r/min的高速分散机中进行高速搅拌，边搅拌边缓慢倒入步骤2）中得到的固体组分，待两者充分混合后得到固液混合物；4）将步骤3）得到的粘稠固液混合物放入转速为100-200r/min的高速分散机进行低速搅拌，待气泡逐渐消除后得到防沉降型水性隔热涂料。
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| KR100759063B1 (ko) * | 2006-04-28 | 2007-09-14 | (주)반도 | 생분해성 고분자 필름 및 그의 제조방법 |
| CN101974134A (zh) * | 2010-09-29 | 2011-02-16 | 广州熵能聚合物技术有限公司 | 一种缔合型丙烯酸酯增稠剂及其制备方法与应用 |
| CN111363323B (zh) * | 2020-03-02 | 2022-05-17 | 浙江农林大学 | 一种缓释型抗氧化膜的制备方法与应用 |
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- 2022-07-13 WO PCT/CN2022/105333 patent/WO2024007355A1/zh unknown
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| US20040033313A1 (en) * | 2002-08-13 | 2004-02-19 | Van Etten Holdings, Inc. | Thermal insulating and acoustic absorption coating |
| CN103641951A (zh) * | 2013-12-13 | 2014-03-19 | 山东大学 | 一种两性疏水缔合型三元共聚物的合成方法 |
| CN103709871A (zh) * | 2013-12-31 | 2014-04-09 | 广州集泰化工有限公司 | 纳米水性隔热涂料及其制备方法 |
| WO2017136800A1 (en) * | 2016-02-04 | 2017-08-10 | Isp Investments Llc | Aqueous emulsion polymers as rheology modifiers, compositions thereof, and method of use |
| CN106380977A (zh) * | 2016-08-31 | 2017-02-08 | 广东慧信环保有限公司 | 一种疏水隔热涂料及其制备方法 |
| CN110964394A (zh) * | 2019-12-05 | 2020-04-07 | 岳阳长岭设备研究所有限公司 | 高效阻燃型陶瓷微粒水性隔热涂料及其制备方法 |
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| CN115491087B (zh) | 2023-09-01 |
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