A kind of high-efficiency haze removal coating and preparation method thereof
A technology of haze and coating, which is applied in the field of efficient haze removal coating and its preparation, can solve the problems of high operating cost and poor collection ability of haze particles, and achieve the improvement of photocatalytic ability, photoelectric catalytic ability, Reduce the effect of compounding
Inactive Publication Date: 2019-09-13
TIANJIN VOCATIONAL INST
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Problems solved by technology
[0009] The purpose of the present invention is to provide a high-efficiency haze removal coating, which overcomes the defects of poor haze particle trapping ability and high operating cost of existing haze removal products. TiO 2 The sol is coated on the surface of the structure, and the solvent volatilizes at room temperature and then solidifies to form a haze-removing functional coating. The electric field generated by the spontaneous polarization of the tourmaline powder electrostatically attracts the haze particles, prompting their natural removal and photocatalytic decomposition after agglomeration; efficient dust removal Haze coating sol is composed of photocatalyst, negative ion generator, rare earth synergist, film forming agent and solvent
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0038] Dissolve the chemical reagent titanyl sulfate 16.0g (0.1mol), lanthanum nitrate 8.7g (0.02mol) and terbium nitrate 2.1g (0.005mol) in deionized water to prepare a 1mol / L solution; stir the lanthanum nitrate Add terbium nitrate solution to titanyl sulfate solution to form a mixed salt solution; add 1mol / L ammonia solution 270mL to the mixed salt solution under stirring to form TiO(OH) 2 、La(OH) 3 and Tb(OH) 3 For co-precipitation, add ammonia water dropwise until the precipitation no longer increases, and the pH of the solution is 9-11; the precipitate is separated by vacuum filtration, and washed with deionized water until the washing water no longer contains sulfate ions. Disperse the hydroxide precipitate in 150 mL of 1 mol / L fluoroboric acid aqueous solution and heat it to 90°C for peptization, then conduct a hydrothermal reaction at 90-100°C for 8 hours to form transparent La-Tb doped nano-TiO 2 Sol.
[0039] Add 8.0g of tourmaline fine powder into 400mL of 0.1mo...
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Abstract
The invention relates to an efficient dust-haze clearing coating and a preparation method thereof. The efficient dust-haze clearing coating is characterized in that rare earth La-Tb synergistic tourmaline micro powder and La-Tb doped nanometer TiO2 sol are coated on the building surface; after a solvent is volatilized at the normal temperature, a dust-haze clearing functional coating is formed through curing; the electric field static electricity generated through spontaneous polarization of tourmaline micro powder attracts dust-haze particles; natural clearing and photoelectrocatalysis decomposition after the coagulation are promoted. The efficient dust-haze clearing coating sol is prepared from photoelectric catalysts, negative ion generators, rare earth synergists, organic silicon film-forming agents and solvents. The coating film thickness is 1 to 5mum; the coating film solid ingredient mass is 20 to 100g / m<2>; the negative ion release quantity is 2000 / cm<3> or greater; in a heavy dust-haze whether and under the indoor illumination condition, the dust-haze clearing rate is 60 percent to 85 percent in 2h; the efficient dust-haze clearing coating can be used for clearing dust haze in indoor and outdoor air; negative ions can be released into air for a long time; the air quality is improved.
Description
technical field [0001] The invention relates to a high-efficiency haze-removing coating and a preparation method thereof, in particular to synergize tourmaline micropowder with rare earth and doped nano-TiO 2 A coating as a functional component and a preparation method thereof belong to the fields of environmental protection and new materials. Background technique [0002] In recent years, there have been both inter-provincial, large-scale, strong seasonal, and short-duration hazes in China, as well as localized, small-scale, normalized, and long-duration hazes. Haze particles are enriched with many inorganic and organic compounds, which are adsorbed on very fine solid particles in the aerosol. The major chemical components in haze are sulfate, nitrate, ammonium salt, organic carbon and elemental carbon. The composition of haze varies from place to place and varies with seasons and meteorological conditions. Atmospheric solid particulate matter PM is usually divided into P...
Claims
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IPC IPC(8): C09D1/00C09D7/61
Inventor 李建生刘炳光王少杰赵洋尹浩南张腾葸彦娇
Owner TIANJIN VOCATIONAL INST