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Preparation method of photocatalytic shell powder coating

A technology of photocatalysis and shell powder, applied in the direction of epoxy resin coating, coating, etc., can solve the problem of removal or even decomposition of difficult organic poisonous gases, achieve obvious adsorption effect, broad application prospects, and improve efficiency

Inactive Publication Date: 2019-06-07
常州环际商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main technical problem to be solved by the present invention is to solve the defects that the existing shell powder coating is applied to the inner wall of the building, relies on the porous structure, and absorbs the organic poisonous gas, but it is difficult to remove or even decompose the organic poisonous gas. Preparation method of photocatalytic shell powder coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of thiolated halloysite powder:

[0032] In parts by weight, 20 parts of halloysite powder, 40 parts of toluene, and 20 parts of 3-mercaptopropyltrimethoxysilane are placed in a three-necked flask, heated to 100°C, heated to reflux for 20 hours, and the obtained reflux material is filtered The filtrate is removed, and the solid is separated and dried under vacuum at 70° C. to obtain thiolated halloysite powder.

[0033] Preparation of photocatalytic nanotube carrier:

[0034] Mix the mercapto halloysite powder, 30% hydrogen peroxide, distilled water, and methanol at a mass ratio of 7:4:5:3 in a single-necked bottle to obtain a mixed solution. At room temperature, the magnetic stirring speed is 300r / min. Under the conditions of oxidation reaction for 12h, then add 10% chromium trichloride of the remaining mixed liquid mass to the single-neck bottle, chromate reaction for 10h, filter and remove the filtrate to obtain the filter residue, and place it in a vacuum dryi...

Embodiment 2

[0044] Preparation of thiolated halloysite powder:

[0045] In parts by weight, 25 parts of halloysite powder, 45 parts of toluene, and 23 parts of 3-mercaptopropyltrimethoxysilane are placed in a three-necked flask, heated to 105°C, heated to reflux for 22h, and the resulting reflux is filtered The filtrate is removed, and the solid is separated and dried under vacuum at 75° C. to obtain mercapto halloysite powder.

[0046] Preparation of photocatalytic nanotube carrier:

[0047] Mix the mercapto halloysite powder, 30% hydrogen peroxide, distilled water, and methanol at a mass ratio of 7:4:5:3 and place them in a single-necked bottle to obtain a mixed solution. At room temperature, the magnetic stirring speed is 350r / min. Under the conditions of oxidation reaction for 12h, then add 10% chromium trichloride of the remaining mixed liquid mass to the single-neck bottle, chromate reaction for 11h, filter and remove the filtrate to obtain the filter residue, and place it in a vacuum dry...

Embodiment 3

[0057] Preparation of thiolated halloysite powder:

[0058] In parts by weight, 30 parts of halloysite powder, 50 parts of toluene, and 25 parts of 3-mercaptopropyltrimethoxysilane are placed in a three-necked flask, heated to 110°C, heated to reflux for 24 hours, and the obtained reflux material is filtered The filtrate is removed, the solid is separated and dried under vacuum at 80° C. to obtain mercapto halloysite powder.

[0059] Preparation of photocatalytic nanotube carrier:

[0060] Mix the mercapto halloysite powder, 30% hydrogen peroxide, distilled water, and methanol at a mass ratio of 7:4:5:3 in a single-necked bottle to obtain a mixed solution. At room temperature, the magnetic stirring speed is 400r / min. Under the conditions of oxidation reaction for 13h, then add 10% chromium trichloride of the remaining mixed liquid mass to the single-neck bottle, chromate reaction for 12h, filter and remove the filtrate to obtain the filter residue, and place it in a vacuum drying ov...

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Abstract

The invention relates to the technical field of preparation of building coatings, in particular to a preparation method of a photocatalytic shell powder coating. The method comprises the following steps: oxidizing sulfhydrylated halloysite powder by using hydrogen peroxide and methanol to obtain a photocatalytic nanotube carrier; dispersing ethyleneimine, tetraethylenepentamine and bisphenol A epoxy resin in absolute methanol, dissolving the components and sequentially adding silicone acrylic emulsion, sepiolite powder, diatomite, shell powder and the like to obtain the photocatalytic shell powder coating. Nano-crystalline cellulose is carbonized and then is supported on the photocatalytic nanotube carrier, so that the photocatalytic nanotube carrier has very high adsorption capacity; after the photocatalytic nanotube is mixed with nano titanium dioxide, photo-induced electrons generated by titanium dioxide can be easily received, and the efficiency of photocatalytic degradation of indoor organic toxic gases is improved. The shell powder and the photocatalytic nanotube carrier both provide a porous structure, so that the indoor photocatalytic oxidation efficiency is improved, and the adsorption rate of chromium ions in the photocatalytic nanotube carrier in low-concentration organic toxic gas can be improved. The product is healthy and environment-friendly and has a wide application prospect.

Description

Technical field [0001] The invention relates to the technical field of architectural paint preparation, in particular to a method for preparing photocatalytic shell powder paint. Background technique [0002] With the continuous improvement of people's requirements for decoration quality, composite materials are used more and more in home decoration, and the toxic substances produced by them flood every family and endanger people's health. Looking for environmentally friendly indoor wall coatings has gradually become a research focus in recent years. [0003] The main component of shells is calcium compounds, including 95% calcium carbonate and a small amount of trace elements, chitin and amino acids. Shell powder is a powdery material obtained by washing, calcining, crushing and grinding shells. Shell powder paint is a kind of paint that uses natural shell powder as raw materials and other fillers and additives, and is mixed for a certain period of time. Shell powder paint is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/61C09D7/63C09D7/62C09D7/65
Inventor 苏洪泉
Owner 常州环际商贸有限公司
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