Anti-crack, waterproof and weather-resistant building coating and preparation method therefor

A kind of architectural coating and weather-resistant technology, which is applied in anti-corrosion coatings, polyester coatings, polyamide coatings, etc., can solve problems such as difficult quality assurance, construction difficulties, and rising costs, and achieve excellent anti-corrosion performance, improve waterproof effect, and waterproof performance good effect

Inactive Publication Date: 2016-06-01
毛学辉
6 Cites 13 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0004] At present, the existing waterproof coatings have great harm to the human body and the environment, and are prone to aging, cracking, deformation, breaking, and delamination. For places with complex shapes, constructio...
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Method used

(6) Mixed solution A and B are mixed uniformly, steam is passed into heating, makes liquid temperatu...
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Abstract

The invention discloses a preparation method for an anti-crack, waterproof and weather-resistant building coating. The building coating comprises the following components: polyvinyl alcohol, polyacrylic emulsion, silica sol, polyamide, quick lime, castor oil, potassium oxide, zinc oxide, aluminum oxide, polyvinyl acetate, methyl methacrylate, phenolic resin, heavy calcium carbonate, bentonite and the like. The building coating provided by the invention is strong in binding power and anti-crack, thereby improving the waterproof effect; the building coating can be constructed on the wet or dry basic surfaces of various materials and is good in waterproof performance, nontoxic, harmless and long in service life; and the performance indexes of the hardness, water resistance, alkali resistance and scrubbing resistance of the coating after film formation are all relatively high, and meanwhile, the coating has excellent corrosion resistance and extremely good weather resistance.

Application Domain

Anti-corrosive paintsPolyamide coatings +1

Technology Topic

Weather resistancePolyamide +17

Examples

  • Experimental program(3)

Example Embodiment

[0024] Example 1
[0025] An anti-cracking, waterproof, and weather-resistant architectural coating, including the following components by mass:
[0026] 30 parts of polyvinyl alcohol, 15 parts of polypropylene emulsion, 15 parts of silica sol, 10 parts of polyamide, 5 parts of quicklime, 20 parts of castor oil, 5 parts of defoamer, 5 parts of plasticizer, 12 parts of potassium oxide, 2 parts of zinc oxide Parts, 10 parts aluminum oxide, 30 parts polyvinyl acetate, 15 parts methyl methacrylate, 15 parts phenolic resin, 10 parts heavy calcium carbonate, 5 parts bentonite, 1 part nano-silica, 1 part dispersant , 0.2 parts of quick-drying agent, 0.3 parts of film-forming aids, 10 parts of vinylidene difluoro resin, 5 parts of acrylic resin, 20 parts of diethylene glycol butyl ether, 15 parts of xylene, 10 parts of saturated carboxy-terminated polyester resin, 80 parts of deionized water.
[0027] Further, the defoamer is simethicone.
[0028] Further, the plasticizer is dibutyl phthalate.
[0029] Further, the dispersant is sodium lauryl sulfate.
[0030] Further, the dispersant is sodium lauryl sulfate.
[0031] Further, the quick-drying agent is propylene glycol.
[0032] Further, the film-forming assistant is alcohol ester twelve.
[0033] The invention also discloses a preparation method of the above-mentioned anti-cracking, waterproof and weather-resistant architectural paint, which comprises the following steps:
[0034] (1) Take polyvinyl alcohol, polypropylene emulsion, silica sol, polyamide, quicklime, castor oil, potassium oxide, zinc oxide, aluminum oxide, polyvinyl acetate, methyl methacrylate, phenolic resin according to the ratio of raw materials , Heavy calcium carbonate and bentonite are fully mixed in the mixer and crushed to make a uniform mixture A;
[0035] (2) According to the raw material ratio, take nano silica, polydifluororesin, acrylic resin, diethylene glycol butyl ether, xylene, saturated carboxyl-terminated polyester resin, and mix well in the blender to obtain Mixture B;
[0036] (3) Mix the above-mentioned Mixture A and Mixture B thoroughly and leave it for 24 hours;
[0037] (4) Add 40% of the deionized water by weight of the architectural coating to be prepared into the foam pool, then pass in steam for heating for 13 hours, control the water temperature at 50°C, add the above-mentioned mixture of step (3), stir evenly to obtain a mixture Liquid A;
[0038] (5) Remove the foaming agent, plasticizer, dispersant, quick-drying agent, and film-forming auxiliary according to the raw material ratio, add the remaining weight of deionized water, mix well in the mixer, and make a uniform mixture B ;
[0039] (6) Mix the mixtures A and B evenly, heat the steam to make the temperature of the liquid reach 85°C, add additives, and no suspended impurities, until it is clear and transparent;
[0040] (7) The obtained mixture is pressurized again for molding, the pressurization pressure is 18MPa, the pressurization time is 6h, and it is left for 6h after cooling to obtain the architectural coating.

Example Embodiment

[0041] Example 2
[0042] An anti-cracking, waterproof, and weather-resistant architectural coating, including the following components by mass:
[0043] 80 parts of polyvinyl alcohol, 30 parts of polypropylene emulsion, 20 parts of silica sol, 15 parts of polyamide, 10 parts of quicklime, 25 parts of castor oil, 20 parts of defoamer, 10 parts of plasticizer, 15 parts of potassium oxide, 10 parts of zinc oxide Parts, 12 parts aluminum oxide, 50 parts polyvinyl acetate, 30 parts methyl methacrylate, 25 parts phenolic resin, 15 parts heavy calcium carbonate, 10 parts bentonite, 10 parts nano-silica, 3 parts dispersant , 1.5 parts of quick-drying agent, 3 parts of film-forming aids, 15 parts of vinylidene difluoro resin, 15 parts of acrylic resin, 30 parts of diethylene glycol butyl ether, 20 parts of xylene, 20 parts of saturated carboxy-terminated polyester resin, 100 parts of deionized water.
[0044] Further, the defoamer is octanol.
[0045] Further, the plasticizer is dibutyl phthalate.
[0046] Further, the dispersant is sodium lauryl sulfate.
[0047] Further, the dispersant is sodium lauryl sulfate.
[0048] Further, the quick-drying agent is propylene glycol.
[0049] Further, the film-forming assistant is alcohol ester twelve.
[0050] The invention also discloses a preparation method of the above-mentioned anti-cracking, waterproof and weather-resistant architectural paint, which comprises the following steps:
[0051] (1) Take polyvinyl alcohol, polypropylene emulsion, silica sol, polyamide, quicklime, castor oil, potassium oxide, zinc oxide, aluminum oxide, polyvinyl acetate, methyl methacrylate, phenolic resin according to the ratio of raw materials , Heavy calcium carbonate and bentonite are fully mixed in the mixer and crushed to make a uniform mixture A;
[0052] (2) According to the raw material ratio, take nano silica, polydifluororesin, acrylic resin, diethylene glycol butyl ether, xylene, saturated carboxyl-terminated polyester resin, and mix well in the blender to obtain Mixture B;
[0053] (3) Mix the above-mentioned Mixture A and Mixture B thoroughly and leave it for 48 hours;
[0054] (4) Add 60% of the deionized water by weight of the architectural coating to the foam pool, then steam for 15h, control the water temperature at 75°C, add the mixture of the above step (3), stir evenly to obtain a mixture Liquid A;
[0055] (5) Remove the foaming agent, plasticizer, dispersant, quick-drying agent, and film-forming aid according to the raw material ratio, add the remaining weight of deionized water, mix well in the mixer, and make a uniform mixture B ;
[0056] (6) Mix the mixtures A and B evenly, pass the steam into the heating, make the liquid temperature reach 90℃, add additives, there should be no suspended impurities, until it is clear and transparent;
[0057] (7) The obtained mixture is pressurized again for molding, the pressurization pressure is 30MPa, the pressurization time is 8h, and it is left for 18h after cooling to obtain the architectural coating.

Example Embodiment

[0058] Example 3
[0059] An anti-cracking, waterproof, and weather-resistant architectural coating, including the following components by mass:
[0060] 55 parts of polyvinyl alcohol, 20 parts of polypropylene emulsion, 17 parts of silica sol, 12 parts of polyamide, 7 parts of quicklime, 22 parts of castor oil, 10 parts of defoamer, 7 parts of plasticizer, 13 parts of potassium oxide, 6 parts of zinc oxide Parts, 11 parts of aluminum oxide, 40 parts of polyvinyl acetate, 20 parts of methyl methacrylate, 17 parts of phenolic resin, 12 parts of heavy calcium carbonate, 7 parts of bentonite, 5 parts of nano silica, 2 parts of dispersant , 1 part quick-drying agent, 2 parts film-forming aids, 12 parts vinylidene difluoro resin, 10 parts acrylic resin, 25 parts diethylene glycol butyl ether, 17 parts xylene, 15 parts saturated carboxy-terminated polyester resin, 90 parts of deionized water.
[0061] Further, the defoamer is a combination of dimethyl silicone oil and octanol.
[0062] Further, the plasticizer is dibutyl phthalate.
[0063] Further, the dispersant is sodium lauryl sulfate.
[0064] Further, the dispersant is sodium lauryl sulfate.
[0065] Further, the quick-drying agent is propylene glycol.
[0066] Further, the film-forming assistant is alcohol ester twelve.
[0067] The invention also discloses a method for preparing the above-mentioned anti-cracking, waterproof and weather-resistant architectural paint, which includes the following steps:
[0068] (1) Take polyvinyl alcohol, polypropylene emulsion, silica sol, polyamide, quicklime, castor oil, potassium oxide, zinc oxide, aluminum oxide, polyvinyl acetate, methyl methacrylate, phenolic resin according to the ratio of raw materials , Heavy calcium carbonate and bentonite are fully mixed in the mixer and crushed to make a uniform mixture A;
[0069] (2) Take nano silica according to the ratio of raw materials, polydifluororesin, acrylic resin, diethylene glycol butyl ether, xylene, saturated carboxyl-terminated polyester resin, and mix well in the blender to obtain Mixture B;
[0070] (3) Mix the above-mentioned Mixture A and Mixture B thoroughly and leave it for 36 hours;
[0071] (4) Add 50% of the deionized water by weight of the architectural coating to the foam pool, then steam for 14h, control the water temperature at 60°C, add the mixture of the above step (3), stir evenly to obtain a mixture Liquid A;
[0072] (5) Remove the foaming agent, plasticizer, dispersant, quick-drying agent, and film-forming auxiliary according to the raw material ratio, add the remaining weight of deionized water, mix well in the mixer, and make a uniform mixture B ;
[0073] (6) Mix the mixtures A and B evenly, heat the steam to make the liquid temperature reach 87°C, add additives, and there should be no suspended impurities until it is clear and transparent;
[0074] (7) The obtained mixture is pressurized again for molding, the pressurization pressure is 24MPa, the pressurization time is 7h, and it is left for 12h after cooling to obtain the architectural coating.
[0075] The architectural paint provided by the invention has strong adhesion, crack resistance, and improved waterproof effect; it can be constructed on wet or dry base surfaces of various materials with good waterproof performance, non-toxic and harmless, and long service life; and the paint forms a film After the hardness, water resistance, alkali resistance and scrubbing resistance performance indicators are high, it has excellent anti-corrosion performance and excellent weather resistance.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Classification and recommendation of technical efficacy words

  • Improve waterproof effect
  • Strong adhesion
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