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Photocatalytic fireproof coating for degrading formaldehyde gas, and preparation method thereof

A technology of fire-resistant coatings and formaldehyde gas, applied in the direction of fire-resistant coatings, coatings, etc., can solve the problems of high cost, single function of coating fillers, complex processes, etc., and achieve the effect of reducing production costs and improving market competitiveness

Active Publication Date: 2019-07-12
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of using metal elements and rare earth elements on TiO 2 There are problems of high cost and complicated process for modification, and the shortcoming of single function of paint filler. The present invention utilizes steel slag to treat TiO 2 Carry out modification as photocatalytic pigment, montmorillonite powder as flame retardant filler to prepare coating, and control stirring speed, stirring time, stirring temperature, heating rate, calcination temperature, etc., in order to realize high value-added recycling of metallurgical solid waste , to obtain multifunctional coatings with photocatalytic and fireproof properties

Method used

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  • Photocatalytic fireproof coating for degrading formaldehyde gas, and preparation method thereof
  • Photocatalytic fireproof coating for degrading formaldehyde gas, and preparation method thereof
  • Photocatalytic fireproof coating for degrading formaldehyde gas, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0027]

[0028] The base material is aluminum dihydrogen phosphate; the catalyst is ammonium polyphosphate; the char-forming agent is pentaerythritol; the foaming agent is melamine; the flame-retardant filler is sodium-calcium-based montmorillonite micropowder; The photocatalytic pigment is steel slag modified TiO 2 The inorganic solvent is water; the dispersant is water glass; the drying agent is calcium oxide; the drying aid is zinc powder; the nano mother liquor is nano SiO 2 mother liquor.

[0029] Firstly, according to the volume ratio of tetrabutyl titanate and absolute ethanol in the ratio of 2:3, stir with a constant temperature magnetic stirrer at 600r / min for 45min to obtain a uniform transparent solution, and then dilute hydrochloric acid solution with steel slag micropowder dissolved at 950r Slowly add the above solution u...

Embodiment 2

[0033] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0034]

[0035]

[0036] The base material is aluminum dihydrogen phosphate; the catalyst is ammonium polyphosphate; the char-forming agent is pentaerythritol; the foaming agent is melamine; The catalytic pigment is steel slag modified TiO 2 The inorganic solvent is water; the dispersant is water glass; the drying agent is calcium oxide; the drying aid is zinc powder; the nano mother liquor is nano SiO 2 mother liquor.

[0037] First, according to the volume ratio of tetrabutyl titanate and absolute ethanol in the ratio of 2:3, stir with a constant temperature magnetic stirrer at 800r / min for 35min to obtain a uniform transparent solution, and then dissolve the dilute hydrochloric acid solution with steel slag fine powder at 850r Slowly add the above solution under the condition of 1000r / min and stir for 60min under the condition o...

Embodiment 3

[0041] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0042]

[0043] The base material is aluminum dihydrogen phosphate; the catalyst is ammonium polyphosphate; the char-forming agent is pentaerythritol; the foaming agent is melamine; the flame-retardant filler is calcium-based montmorillonite micropowder; The catalytic pigment is steel slag modified TiO 2 The inorganic solvent is water; the dispersant is water glass; the drying agent is calcium oxide; the drying aid is zinc powder; the nano mother liquor is nano SiO 2 mother liquor.

[0044] Firstly, according to the volume ratio of tetrabutyl titanate and absolute ethanol of 2:3, use a constant temperature magnetic stirrer to stir at 500r / min for 30min to obtain a uniform transparent solution, and then dissolve the dilute hydrochloric acid solution with steel slag powder at 1000r Slowly add the above solution under the condition of 90...

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Abstract

The invention discloses a photocatalytic fireproof coating for degrading formaldehyde gas, and a preparation method thereof, and belongs to the field of functional coatings. The photocatalytic fireproof coating comprises a base material, a catalyst, a carbon forming agent, a foaming agent, a flame retardant filler, a photocatalytic pigment, an inorganic solvent, a dispersant, a drier, a drying aidand a nanometer mother liquor. The flame retardant filler is one or more of calcium-based montmorillonite powder, sodium-based montmorillonite micro-powder, sodium-calcium-based montmorillonite micro-powder and magnesium-based montmorillonite micropowder; the photocatalytic pigment is steel slag-modified TiO2. Steel slag is used to modify TiO2, the steel slag-modified TiO2 is used as the photocatalytic pigment, and montmorillonite micro-powder is used as the flame retardant filler to prepare the photocatalytic fireproof coating, so a new way of utilizing metallurgical solid wastes is opened up, the fireproof coating is endowed with brand new functions, the production cost of the catalytic fireproof coating is reduced by about 30%, the high value-added application of the metallurgical solid wastes is realized, and the purpose of increasing the efficiency with wastes is achieved.

Description

technical field [0001] The invention belongs to the field of functional coatings, and in particular relates to a steel slag modified TiO 2 As a photocatalytic pigment, a photocatalytic fireproof coating for degrading formaldehyde gas that can comprehensively utilize metallurgical solid waste was prepared. Background technique [0002] Steel slag is solid waste produced in the steelmaking process, accounting for about 15% to 20% of steelmaking output. Steel slag is mainly composed of oxides of calcium, iron, silicon, magnesium and a small amount of aluminum, manganese, phosphorus, etc., that is, SiO 2 , Fe 2 o 3 、Al 2 o 3 , ZnO, CaO, MgO, P 2 o 5 , MnO, SO 3 etc., also contains a small amount of free calcium oxide and metallic iron. At present, the stockpiling of a large amount of steel slag not only takes up valuable land, but also pollutes the surrounding environment and groundwater. In my country, there are a large number of montmorillonites composed of silicate ...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/18C09D7/61C09D7/62C09D7/63
CPCC09D1/00C09D5/18C09D7/61C09D7/62C09D7/63C09D7/67
Inventor 龙红明王凯祥郑伟成季益龙张浩
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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