Preparation method of silicon-titanium aerogel adsorption and photocatalytic inner wall coating

Abstract

The invention belongs to the technical field of functional coatings and particularly relates to a preparation method of an environment-friendly indoor adsorption and photocatalytic silicon-titanium aerogel inner wall coating. The preparation method is characterized in that the inner wall coating is prepared from the following components of water A, a mixture A-1 and a mixture A-2 in parts by weight with the weight ratio being (1 to 3) to (2 to 6) to (1 to 3), wherein the mixture A-1 is prepared from nanometer titanium oxide composite silicon aerogel photocatalyst powder, aerogel powder A, a wetting agent A-1, a wetting agent A-2 and a pigment and filler A; and the mixture A-2 is an adhesive. The preparation method comprises the following steps of mixing the materials in batches, performingshearing stirring and emulsification to prepare a finished product. The inner wall coating has the functions of capability of decomposing indoor pollutants while performing adsorption and self-cleaning and is long in service life.

Description

[0001] This application is a divisional application of the Chinese invention patent with the patent application number 201710450934.9 (application date: June 12, 2017, patent name: a silicon-titanium airgel adsorption and photocatalytic interior wall coating and its preparation method). technical field [0002] The invention belongs to the technical field of functional coatings, and in particular relates to a preparation method of an environmental-friendly indoor adsorption and photocatalytic silicon-titanium airgel interior wall coating. Background technique [0003] Formaldehyde is a colorless gas with a pungent odor. Daily decoration materials and new indoor furniture are the main sources of formaldehyde pollution. Due to technical and material limitations, there will generally be a large amount of formaldehyde residue after the house is renovated. Scientific research shows that formaldehyde exists for a very long time, and its incubation period is generally 3-15 years. It...

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Problems solved by technology

The air-purifying paint formula developed by this kind of interior wall paint using the principle of photocatalysis only achieves the purpose of photocatalysis by adding a variety of photocatalyst substances, but it does not have adsorption capacity, and the photocatalytic effect is poor. A single TiO 2 Combining with other materials is easy to cause agglomeration, in addition, it is easy to cause catalyst poisoning and short service life

[0008] The Chinese patent No. 201110123361.1 announced a new type of anti-formaldehyde net odor full-effect water-based interior wall coating, including aldehyde-removing emulsion, polyurethane modified acrylic resin, bamboo charcoal powder, nano-titanium dioxide photocatalyst, calcium carbonate and pigments and fillers, defoaming agent, dispersant, anti-sedimentation agent, water and additives. Although this kind of coating uses a combination of physical adsorption and chemical decomposition to remove formaldehyde, the nano-titanium dioxide photocatalyst is prone to agglomeration during the preparation of the coating, which affects its catalytic performance. In addition, it is also prone to catalyst poisoning and short service life

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