CN115403950A - Super-weather-resistant roof waterproof coating and preparation method and application thereof - Google Patents
Super-weather-resistant roof waterproof coating and preparation method and application thereof Download PDFInfo
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- CN115403950A CN115403950A CN202211197715.1A CN202211197715A CN115403950A CN 115403950 A CN115403950 A CN 115403950A CN 202211197715 A CN202211197715 A CN 202211197715A CN 115403950 A CN115403950 A CN 115403950A
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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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
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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Abstract
The invention belongs to the technical field of waterproof materials, and particularly relates to an ultra-weather-resistant roof waterproof coating, and a preparation method and application thereof, wherein the roof waterproof coating comprises the following components in parts by weight: 350-550 parts of pure acrylic emulsion; 5-15 parts of a dispersing agent; 5-30 parts of reactive zinc oxide; 1-5 parts of a cross-linking agent; 250-350 parts of a filler; 50-150 parts of titanium dioxide; 2-4 parts of a defoaming agent; 5-15 parts of a film-forming assistant; 10-20 parts of an antifreezing agent; 1-5 parts of methacrylic acid; 3-5 parts of a thickening agent; 100-150 parts of water; the mass ratio of the reactive zinc oxide to the cross-linking agent is 1-10; the dispersing agent is hydrophobic modified polycarboxylate. The super weather-resistant roof waterproof coating can meet the artificial aging requirement of more than 1500h, and has good weather resistance; dust is not easy to be stained, and the stain resistance is strong; the product paint film has extremely low water absorption rate and excellent water immersion resistance, and can be applied to roofs and roof transformation protection systems.
Description
Technical Field
The invention belongs to the technical field of waterproof materials, and particularly relates to an ultra-weather-resistant roof waterproof coating as well as a preparation method and application thereof.
Background
For the leakage of metal roof, silicone glass cement, SBS modified asphalt coiled material or PVC, TPO and other polymer coiled materials are generally adopted for maintenance. Because the temperature and load change of the metal roof are complex, the materials are difficult to meet the deformation requirement of expansion with heat and contraction with cold, and the problems of high manufacturing cost, complex construction process and the like exist. By applying the coating on the metal roof, the roof integrating energy conservation and water resistance can be obtained.
At present, most industrial plants are built by taking color steel plates as ceilings, the color steel plate ceilings are corroded by the environment, generally, corrosion and damage can occur in 3-5 years, roof water leakage is caused, the repairing difficulty is high, and the service life of the repaired ceiling is short. The existing roof waterproof coating generally comprises asphalt type waterproof coating, polyurethane waterproof coating, acrylic acid waterproof coating and the like, and the existing roof waterproof coating still has more defects, such as poor weather resistance and waterproof service life of only 2-3 years; the color is mainly dark, and the temperature inside the building is increased after the building is used for a roof, which is particularly serious in summer; although some white or light-colored roof waterproof coatings are available on the market, the pollution resistance is poor, the coatings are gradually polluted and become dim or even become grey after being used, in addition, the structures of the roofs have complex structures such as gutter, the water accumulation blocking situation is easy to occur at the parts, and the phenomena of delamination and bulging are easy to occur once the water accumulation situation is formed due to poor water resistance of the products. Therefore, there is a need to develop a waterproof coating with excellent weather resistance, stain resistance and water resistance.
Disclosure of Invention
The invention aims to provide the super weather-resistant roof waterproof coating, the preparation method and the application thereof, the super weather-resistant roof waterproof coating can meet the artificial aging requirement of more than 1500h, and the weather resistance is good; dust is not easy to be stained, and the stain resistance is strong; the water absorption rate of the paint film of the product is extremely low, and the water immersion resistance is excellent.
In order to realize the purpose, the invention provides an ultra-weather-resistant roof waterproof coating which comprises the following components in parts by weight:
pure acrylic emulsion: 350-550 parts;
dispersing agent: 5-15 parts;
reactive zinc oxide: 5-30 parts;
a crosslinking agent: 1-5 parts;
filling: 250-350 parts;
titanium dioxide: 50-150 parts;
defoaming agent: 2-4 parts;
film-forming auxiliary agent: 5-15 parts;
an antifreezing agent: 10-20 parts;
methacrylic acid: 1-5 parts;
thickening agent: 3-5 parts;
water: 100-150 parts;
the mass ratio of the reactive zinc oxide to the cross-linking agent is 1-10;
the dispersing agent is hydrophobic modified polycarboxylate.
According to the technical scheme, the pure acrylic emulsion is used as a main material, the outstanding characteristics of water resistance, weather resistance and the like are utilized, and the heat resistance, wear resistance, pollution resistance, ageing resistance and mechanical strength of the product can be effectively improved by adding the reactive zinc oxide and the cross-linking agent, so that the pure acrylic emulsion and the cross-linking agent have synergistic effect, and the tensile strength and the bonding strength of the product can be further improved; by adding the hydrophobic modified polycarboxylate as the dispersing agent, the dispersing effect is good, and the water resistance and the stain resistance of the product can be improved; the titanium dioxide is added, so that the brightness and the reflection heat insulation effect of the product can be improved; the antifreezing agent is added, so that the antifreezing performance of the product can be improved; the durability and the caking property of the product are improved by adding methacrylic acid, and the obtained roof waterproof coating has excellent comprehensive performance.
Further, in the above technical scheme, the glass transition temperature of the pure acrylic emulsion is-40 ℃ to-20 ℃. In the technical scheme, the low-temperature flexibility of the roof waterproof coating can be improved by controlling the glass transition temperature of the pure acrylic emulsion.
Furthermore, the particle size of the reactive zinc oxide in the technical scheme is 25-40nm, and the specific surface area is more than 85m 2 (iv) g. The reactive zinc oxide in the technical scheme is active zinc oxide, is a nano material, and has double characteristics of the nano material and the traditional zinc oxide. Compared with the traditional zinc oxide product, the zinc oxide has the advantages of large specific surface area, high chemical activity, capability of obviously enhancing light absorption and better ultraviolet shielding performance, and the ultraviolet shielding rate is as high as 98%;meanwhile, the composition has antibacterial and bacteriostatic properties, and can remove odor and prevent enzyme, and the dosage can be reduced. In addition, the active zinc oxide can also improve the tensile property, the wear resistance and the ageing resistance of the material, and is superior to common zinc oxide.
Further, in the technical scheme, the solid content of the hydrophobically modified polycarboxylate is 25-26% at 25 ℃, and the viscosity is 50-100mPa.s.
Further, in the above technical scheme, the hydrophobically modified polycarboxylate is a mixture of OROTAN 731A and HY-65A in a weight ratio of 1-2. OROTAN 731A is a universal sodium polycarboxylate dispersant, has excellent dispersing performance and good stability, and also has excellent water resistance. HY-65A is a hydrophobic modified polycarboxylic acid copolymer sodium salt with an ABA structure, has hydrophobicity and dispersibility, and has effective dispersion-assisting effect on fillers and the like while effectively improving water resistance and stain resistance. The invention combines the two components to further improve the water resistance, the stain resistance and the dispersion performance, so that the paint film of the paint has good water resistance and is not easy to bulge after being soaked in water.
Further, in the above technical solution, the cross-linking agent is TAIC (triallyl isocyanurate) or TMPTMA (trimethylolpropane trimethacrylate). The homopolymer-poly (triallyl isocyanurate) of TAIC is a resin with good transparency, hardness, heat resistance and electrical insulation, can be subjected to graft copolymerization with emulsions such as acrylic acid and the like, and can remarkably improve the heat resistance, weather resistance, wear resistance, mechanical strength and the like of a product; TMPTMA is used as a monomer with heat resistance, weather resistance, impact resistance, moisture resistance and other performances, can be copolymerized with other monomers, and can improve the pollution resistance, the heat resistance, the corrosion resistance, the weather resistance and other performances of the product and the adhesive strength by graft copolymerization with acrylic acid and other emulsions.
Further, in the above technical scheme, the filler is one or more of talcum powder, calcium carbonate and quartz powder; the film-forming additive is an alcohol ester 12 series; the antifreezing agent is propylene glycol or ethylene glycol; the plasticizer is one or more of HEC (hydroxyethyl cellulose), DOP (dioctyl phthalate) and DINP (diisononyl phthalate).
The ingredients which are not disclosed in the formula are all conventional products in the field.
The invention also provides a preparation method of the super weather-resistant roof waterproof coating, which comprises the following specific steps:
s1, adding water into a stirring device in advance according to a ratio, starting stirring, then respectively adding a dispersing agent and a defoaming agent, stirring for 20-30min, then adding titanium dioxide, reactive zinc oxide and a filler, and continuously stirring for 30-40min at a speed of 500-600r/min to obtain a mixture A;
s2, mixing the thickening agent and the antifreezing agent, and stirring and mixing uniformly to obtain a mixture B;
s3, premixing the pure acrylic emulsion, the cross-linking agent and the methacrylic acid at the temperature of 35-45 ℃, then adding the film-forming agent, and uniformly stirring and mixing at the speed of 500-600r/min to obtain a mixture C;
s4, slowly adding the mixture C into the mixture A, uniformly mixing, then adding the mixture B, and stirring at 300-400r/min for 30-40min to obtain the roof waterproof coating.
According to the invention, the dispersing agent, the defoaming agent, the titanium dioxide, the reactive zinc oxide and the filler are mixed uniformly in advance to form slurry, so that the problem of nonuniform subsequent mixing can be effectively avoided and the subsequent mixing time can be reduced; the thickening agent and the antifreezing agent are mixed in advance, and are uniformly mixed with the thickening agent by utilizing the characteristics of good viscosity and hygroscopicity of the antifreezing agent, so that the viscosity and the freezing resistance are further improved; the pure acrylic emulsion, the cross-linking agent and the methacrylic acid are subjected to graft polymerization reaction, so that the weather resistance, the mechanical strength and the bonding strength of the emulsion can be improved, and finally, the pure acrylic emulsion, the cross-linking agent and the methacrylic acid are mixed, so that the obtained roof waterproof coating is excellent in weather resistance, water resistance, antifouling performance and mechanics, can reflect and insulate heat, and has an energy-saving effect.
The invention also provides application of the super weather-proof roof waterproof coating in roofs and roof reconstruction protection systems. The roof waterproof coating is used for roofs and roof transformation protection systems, has good waterproofness, and can perfectly solve the leakage problem; the flexibility and the weather resistance are good, and various climatic conditions can be met; solar radiation can be reflected, the working environment is improved, and the energy-saving effect is improved; the use is simple and convenient, and no solid waste is generated.
Furthermore, the super weather-proof roof waterproof coating can meet the artificial aging requirement of more than 1500 h.
The invention has the beneficial effects that:
1. the roof waterproof coating obtained by taking pure acrylic emulsion as a main material, adding various additives and controlling the proportion of the additives has excellent comprehensive properties such as weather resistance, water resistance, stain resistance, tensile strength and the like;
2. by using the reactive zinc oxide, the tensile property, the wear resistance and the ageing resistance of the product can be improved, and the product also has certain ultraviolet ray shielding property and antibacterial and mildewproof property; the composite material is matched with a cross-linking agent for use, so that the tensile strength, the bonding strength, the stain resistance and the like can be effectively improved, and the composite material has a synergistic effect;
3. the functional powder filler and the auxiliary agent are added into the acrylate polymer emulsion waterproof coating prepared by the invention, so that the all requirements of JGT375-2012 can be met, the weather resistance is excellent, the artificial aging requirement of more than 1500h can be met, the reflection and heat insulation can be effectively realized, and the energy-saving effect is realized; meanwhile, the stain resistance is strong, and dust is not easy to stain; the water immersion resistance is excellent, and the swelling is avoided; the waterproof coating is suitable for water prevention and transformation of metal roofs; in addition, the color can be randomly prepared according to the requirement, and the product can be used for roof decoration.
Detailed Description
The experimental procedures in the following examples are conventional unless otherwise specified. The raw materials in the following examples are all commercially available products and are commercially available, unless otherwise specified.
The present invention is described in further detail below with reference to examples:
example 1
An ultra-weather-resistant roof waterproof coating comprises the following components in parts by weight:
pure acrylic emulsion: 350 parts of (a);
hydrophobically modified polycarboxylate: 5 parts of a mixture;
reactive zinc oxide: 10 parts of (A);
TAIC:1 part;
quartz powder: 250 parts of (A);
titanium dioxide: 80 parts of a binder;
defoaming agent: 2 parts of (1);
film-forming auxiliary agent: 5 parts of a mixture;
propylene glycol: 10 parts of (A);
methacrylic acid: 1 part;
thickener HEC:3 parts of a mixture;
water: 100 parts of (A);
the hydrophobic modified polycarboxylate is a mixture of OROTAN 731A and HY-65A in a weight ratio of 1;
the preparation method comprises the following specific steps:
s1, adding water into a stirring device in advance according to a ratio, starting stirring, then respectively adding a dispersing agent and a defoaming agent, stirring for 20min, then adding titanium dioxide, reactive zinc oxide and quartz powder, and continuously stirring for 40min at a speed of 600r/min to obtain a mixture A;
s2, mixing the thickening agent and the antifreezing agent, and stirring and mixing uniformly to obtain a mixture B;
s3, premixing the pure acrylic emulsion, the cross-linking agent and the methacrylic acid at the temperature of 35 ℃, then adding the film-forming agent, and uniformly stirring and mixing at the speed of 600r/min to obtain a mixture C;
and S4, slowly adding the mixture C into the mixture A, uniformly mixing, then adding the mixture B, and stirring at 300r/min for 40min to obtain the roof waterproof coating.
Example 2
An ultra-weather-resistant roof waterproof coating comprises the following components in parts by weight:
pure acrylic emulsion: 450 parts of a mixture;
hydrophobically modified polycarboxylate: 10 parts of (A);
reactive zinc oxide: 20 parts of (1);
TMPTMA:3 parts of a mixture;
calcium carbonate: 300 parts of (A);
titanium dioxide: 100 parts of (A);
defoaming agent: 3 parts of a mixture;
film-forming auxiliary agent: 10 parts of (A);
propylene glycol: 15 parts of (1);
methacrylic acid: 3 parts of a mixture;
thickener DOP:4 parts of a mixture;
water: 130 parts of a solvent;
the hydrophobic modified polycarboxylate is a mixture of OROTAN 731A and HY-65A in a weight ratio of 1.5;
the preparation method comprises the following specific steps:
s1, adding water into a stirring device in advance according to a ratio, starting stirring, then respectively adding a dispersing agent and a defoaming agent, stirring for 25min, then adding titanium dioxide, reactive zinc oxide and quartz powder, and continuously stirring for 35min at a speed of 550r/min to obtain a mixture A;
s2, mixing the thickening agent and the antifreezing agent, and stirring and mixing uniformly to obtain a mixture B;
s3, premixing the pure acrylic emulsion, the cross-linking agent and the methacrylic acid at the temperature of 40 ℃, adding the film forming agent, and uniformly stirring and mixing at the speed of 550r/min to obtain a mixture C;
and S4, slowly adding the mixture C into the mixture A, uniformly mixing, then adding the mixture B, and stirring at 350r/min for 35min to obtain the roof waterproof coating.
Example 3
An ultra-weather-resistant roof waterproof coating comprises the following components in parts by weight:
pure acrylic emulsion: 550 parts of a mixture;
hydrophobically modified polycarboxylate: 15 parts of a mixture;
reactive zinc oxide: 30 parts of (1);
TAIC:5 parts of a mixture;
quartz powder and talc powder: 350 parts of (a);
titanium dioxide: 150 parts;
defoaming agent: 4 parts of a mixture;
film-forming auxiliary agent: 15 parts of (1);
ethylene glycol: 20 parts of a binder;
methacrylic acid: 5 parts of a mixture;
thickener DINP:5 parts of a mixture;
water: 150 parts;
the hydrophobic modified polycarboxylate is a mixture of OROTAN 731A and HY-65A in a weight ratio of 2;
the preparation method comprises the following specific steps:
s1, adding water into a stirring device in advance according to a ratio, starting stirring, then respectively adding a dispersing agent and a defoaming agent, stirring for 30min, then adding titanium dioxide, reactive zinc oxide and quartz powder, and continuously stirring for 30min at a speed of 500r/min to obtain a mixture A;
s2, mixing the thickening agent and the antifreezing agent, and stirring and mixing uniformly to obtain a mixture B;
s3, premixing the pure acrylic emulsion, the cross-linking agent and the methacrylic acid at the temperature of 45 ℃, then adding the film-forming agent, and uniformly stirring and mixing at the speed of 500r/min to obtain a mixture C;
and S4, slowly adding the mixture C into the mixture A, uniformly mixing, then adding the mixture B, and stirring at 400r/min for 30min to obtain the roof waterproof coating.
Comparative example 1
A roof water-proof paint, which is different from the embodiment 1 in that common zinc oxide is used.
Comparative example 2
A water-proof roof coating, which differs from example 1 in that the crosslinking agent used is DCP.
Comparative example 3
A water-proof roof coating, which is different from the water-proof roof coating in example 1 in that methacrylic acid is not added.
Comparative example 4
A roof waterproof coating is different from example 1 in that the used dispersant is a common anionic dispersant TEGODispers 757W.
Comparative example 5
The roof waterproof coating comprises the following components in parts by weight:
pure acrylic emulsion: 350 parts of (a);
hydrophobically modified polycarboxylate: 5 parts of a mixture;
reactive zinc oxide: 0.5 part;
TAIC:1 part;
quartz powder: 250 parts of (A);
titanium dioxide: 80 parts of a binder;
defoaming agent: 2 parts of (1);
film-forming auxiliary agent: 5 parts of a mixture;
propylene glycol: 10 parts of (A);
methacrylic acid: 1 part;
thickener HEC:3 parts of a mixture;
water: 100 parts of a binder;
the hydrophobic modified polycarboxylate is a mixture of OROTAN 731A and HY-65A in a weight ratio of 1;
the preparation method is the same as example 1.
Comparative example 6
The preparation method of the super weather-resistant roof waterproof coating is the same as that of the embodiment 1, and comprises the following specific steps:
adding water into a stirring device in advance according to the proportion, starting stirring, respectively adding a dispersing agent, a defoaming agent, titanium dioxide, reactive zinc oxide and quartz powder, and continuously stirring at the speed of 600r/min for 40min; then adding pure acrylic emulsion, a cross-linking agent and methacrylic acid, and stirring and mixing uniformly at the speed of 600 r/min; and finally, adding a thickening agent and mixing with propylene glycol, and stirring at 300r/min for 40min to obtain the roof waterproof coating.
Test examples
The key properties of the roof waterproofing coatings prepared in examples 1 to 3 and comparative examples 1 to 6 were tested (according to the heat reflection type test) and the results are shown in table 1. The test method and standard are carried out according to the requirements in JGT375-2012 metal roof acrylic high-elasticity waterproof paint.
TABLE 1 Performance test results
The results in table 1 show that all performance indexes of the roof waterproof coating obtained by the proportioning and preparation method of the invention can reach or even exceed the standard requirements in JGT375-2012, and the roof waterproof coating has excellent weather resistance and can meet the artificial aging requirement of more than 1500 h.
In comparative example 1, the tensile strength, peel adhesion, aging resistance and stain resistance of the obtained roof waterproof coating are obviously reduced compared with those of example 1 by using common zinc oxide, which shows that the reactive zinc oxide has stronger activity than the common zinc oxide and is beneficial to improving the comprehensive performance of the coating; in comparative example 2, the tensile strength, peel adhesion, aging resistance and stain resistance of the obtained roof waterproof coating are significantly reduced compared with example 1 by using the DCP crosslinking agent, which shows that the crosslinking agent also has influence on the overall performance of the coating, and in addition, the reactive zinc oxide and the crosslinking agent have synergistic effect in the invention, as can be seen by combining comparative examples 1 and 2 and example 1.
In comparative example 3, methacrylic acid is not added, and the comprehensive performance of the obtained roof waterproof coating is obviously reduced compared with that of example 1, particularly the stripping adhesion and the ageing resistance are reduced, which shows that the methacrylic acid can improve the adhesion and the durability of the coating.
In comparative example 4, the water absorption, water impermeability and stain resistance of the obtained roof waterproof coating are all significantly reduced compared with example 1 by using a common anionic dispersant, which shows that the hydrophobically modified polycarboxylate of the invention can effectively improve the water resistance and stain resistance of the coating product.
In comparative example 5, when the ratio of the reactive zinc oxide to the cross-linking agent is too low, the overall performance of the obtained roof waterproof coating is reduced to a certain extent compared with that of example 1, which indicates that the ratio of the reactive zinc oxide to the cross-linking agent is not appropriate.
In comparative example 6, the preparation method uses a direct mixing mode, and compared with the roof waterproof coating obtained by the separate mixing and reaction in example 1, the comprehensive performance is reduced, which indicates that the adverse reaction and the function of each component are directly exerted by one mixing.
In conclusion, the roof waterproof coating obtained by using the pure acrylic emulsion as the main material, adding the functional auxiliary agent and the filler and controlling the proportion of the components has excellent comprehensive performances such as weather resistance, water resistance, stain resistance, tensile strength and the like, is superior to all requirements of JGT375-2012, particularly has excellent weather resistance, and can meet the requirement of artificial aging for more than 1500 h.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the invention are possible to those skilled in the art, without departing from the spirit and scope of the invention.
Claims (10)
1. The super weather-resistant roof waterproof coating is characterized by comprising the following components in parts by weight:
pure acrylic emulsion: 350-550 parts;
dispersing agent: 5-15 parts;
reactive zinc oxide: 5-30 parts;
a crosslinking agent: 1-5 parts;
filling: 250-350 parts;
titanium dioxide: 50-150 parts;
defoaming agent: 2-4 parts;
film-forming auxiliary agent: 5-15 parts;
an antifreezing agent: 10-20 parts;
methacrylic acid: 1-5 parts;
thickening agent: 3-5 parts;
water: 100-150 parts;
the mass ratio of the reactive zinc oxide to the cross-linking agent is 1-10;
the dispersing agent is hydrophobic modified polycarboxylate.
2. The weather-resistant roof waterproof paint as claimed in claim 1, wherein the glass transition temperature of the pure acrylic emulsion is-40 ℃ to-20 ℃.
3. The weather-resistant roof waterproof paint as claimed in claim 1, wherein the reactive zinc oxide has a particle size of 25-40nm and a specific surface area of more than 85m 2 /g。
4. The weather-resistant roof waterproof coating as claimed in claim 1, wherein the hydrophobically modified polycarboxylate has a solid content of 25-26% at 25 ℃ and a viscosity of 50-100mPa.s.
5. The super weather-resistant roof waterproof coating as claimed in claim 1, wherein the hydrophobically modified polycarboxylate is a mixture of OROTAN 731A and HY-65A in a weight ratio of 1-2.
6. The super weatherable roof waterproof coating according to claim 1, wherein said cross-linking agent is TAIC or TMPTMA.
7. The weather-resistant roof waterproof coating as claimed in claim 1, wherein the filler is one or more of talc powder, calcium carbonate and quartz powder; the film-forming additive is an alcohol ester 12 series; the antifreezing agent is propylene glycol or ethylene glycol; the plasticizer is one or more of HEC, DOP and DINP.
8. The preparation method of the super weather-proof roof waterproof coating according to any one of claims 1 to 7, characterized by comprising the following specific steps:
s1, adding water into a stirring device in advance according to a ratio, starting stirring, then respectively adding a dispersing agent and a defoaming agent, stirring for 20-30min, then adding titanium dioxide, reactive zinc oxide and a filler, and continuously stirring for 30-40min at a speed of 500-600r/min to obtain a mixture A;
s2, mixing the thickening agent and the antifreezing agent, and stirring and mixing uniformly to obtain a mixture B;
s3, premixing the pure acrylic emulsion, the cross-linking agent and the methacrylic acid at the temperature of 35-45 ℃, then adding the film-forming agent, and uniformly stirring and mixing at the speed of 500-600r/min to obtain a mixture C;
s4, slowly adding the mixture C into the mixture A, uniformly mixing, then adding the mixture B, and stirring at 300-400r/min for 30-40min to obtain the roof waterproof coating.
9. Use of the ultra weatherable roof water repellent coating of any one of claims 1 to 7 in roofing and roofing renovation protection systems.
10. The use according to claim 9, wherein the super weatherable roof waterproof coating is capable of meeting the artificial aging requirement of more than 1500 hours.
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| CN212417898U (en) * | 2020-06-04 | 2021-01-29 | 江西万道新材料有限公司 | Cooling device is used in adhesive production |
| CN113004550A (en) * | 2019-12-19 | 2021-06-22 | 万华化学集团股份有限公司 | Absorbent polymer with high liquidity and low caking tendency and preparation method thereof |
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