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Preparation method of composite building coating capable of degrading tail gas

A technology for building coatings and degrading exhaust gases, applied in coatings and other directions, can solve problems such as low catalytic conversion rate of harmful gases

Inactive Publication Date: 2019-11-22
宁波柏尔环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: Aiming at the problem of low catalytic conversion rate of harmful gas in automobile exhaust in the external purification measures of exhaust machine, a preparation method of composite architectural coating for degrading exhaust gas is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In terms of parts by weight, weigh 20 parts of butyl titanate, 80 parts of absolute ethanol, 10 parts of hydrochloric acid with a mass fraction of 1%, and 40 parts of deionized water, add butyl titanate to absolute ethanol, and Stir at a speed of 180r / min for 20min to obtain a butyl titanate ethanol solution, slowly drop the butyl titanate ethanol solution into deionized water at a rate of 30mL / min, add hydrochloric acid, and stir at a speed of 160r / min at room temperature for 1h , stand and age for 10 hours to obtain a gel, dry the gel in an oven at 80°C for 1 hour to obtain a xerogel, put the xerogel in a grinding tank, and grind it at a speed of 200r / min at room temperature for 1h, and then Place in a muffle furnace, calcinate at 800°C for 2 hours, and cool to room temperature with the furnace to obtain nano-titanium dioxide powder; then weigh 20 parts of nano-titanium dioxide powder and 8 parts of methyl triethoxy base silane, 120 parts of absolute ethanol, and 20 p...

Embodiment 2

[0031] In terms of parts by weight, weigh 25 parts of butyl titanate, 100 parts of absolute ethanol, 13 parts of hydrochloric acid with a mass fraction of 1%, and 50 parts of deionized water, add butyl titanate to absolute ethanol, and Stir at a speed of 190r / min for 25min to obtain a butyl titanate ethanol solution, slowly drop the butyl titanate ethanol solution into deionized water at a rate of 35mL / min, add hydrochloric acid, and stir at a speed of 170r / min at room temperature for 1.5 h, standing and aging for 11 hours to obtain a gel, which was dried in an oven at 85°C for 1.5 hours to obtain a dry gel, which was placed in a grinding tank and ground at room temperature for 1.5 h, then placed in a muffle furnace, calcined for 3 hours at 850°C, and cooled to room temperature with the furnace to obtain nano-titanium dioxide powder; then weighed 25 parts of nano-titanium dioxide powder and 10 parts of methyl Add triethoxysilane, 150 parts of absolute ethanol, and 25 parts of ...

Embodiment 3

[0033] In parts by weight, weigh 30 parts of butyl titanate, 120 parts of absolute ethanol, 15 parts of hydrochloric acid with a mass fraction of 1%, and 60 parts of deionized water, add butyl titanate to absolute ethanol, and Stir at a speed of 200r / min for 30min to obtain a butyl titanate ethanol solution, slowly drop the butyl titanate ethanol solution into deionized water at a rate of 40mL / min, add hydrochloric acid, and stir at a speed of 180r / min at room temperature for 2h , standing and aging for 12 hours to obtain a gel, which was dried in an oven at 90°C for 2 hours to obtain a xerogel. Place in a muffle furnace, calcinate at 900°C for 4 hours, and cool to room temperature with the furnace to obtain nano-titanium dioxide powder; then weigh 30 parts of nano-titanium dioxide powder, 12 parts of methyl triethoxy base silane, 180 parts of absolute ethanol, and 30 parts of deionized water, add methyltriethoxysilane and deionized water into absolute ethanol, and stir at 280...

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Abstract

The invention relates to a preparation method of a composite building coating capable of degrading tail gas, and belongs to the technical field of environment-friendly coatings. According to the invention, nano titanium dioxide is added; the invention discloses the composite building coating capable of degrading tail gas. When the titanium dioxide is irradiated by ultraviolet light, electrons in avalence band are excited by photon energy to move to a conduction band position so as to form photo-generated electrons; a photo-generated hole is formed at the position of the original valence band;oxygen and oxidizing substances dissolved in water are extremely easy to capture photo-generated electrons on the surface of the nano titanium dioxide; the holes can oxidize organic matters adsorbedon the surface of the nano titanium dioxide or oxidize oh <-> and water molecules adsorbed on the surface of the titanium dioxide into hydroxyl radicals; most of organic matters and inorganic pollutants can be oxidized into harmless substances, so that the catalytic degradation capacity of the building on automobile exhaust can be effectively improved, and the air quality is improved.

Description

technical field [0001] The invention relates to a preparation method of a degraded tail gas composite architectural coating, which belongs to the technical field of environmental protection coatings. Background technique [0002] The composition of automobile exhaust is complex and contains a variety of chemical substances, among which the harmful components are mainly soot particles, nitrogen oxides, sulfur dioxide, hydrocarbons and carbon monoxide. These harmful substances will threaten human health, cause poisoning, cause respiratory diseases, and what is even more frightening is that they may cause cancer. In addition to causing harm to human health, automobile exhaust will also cause damage to the earth's ecosystem, the generation of the greenhouse effect, the frequent occurrence of acid rain and urban photochemical smog. According to relevant investigations, there are nearly a hundred kinds of harmful substances in the heavily polluted soil on both sides of municipal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D127/16C09D129/04C09D101/28C09D7/62
CPCC08K2003/2241C08K2201/011C08L2205/035C09D7/62C09D143/04C08L27/16C08L29/04C08L1/286C08K9/06C08K3/22
Inventor 王明
Owner 宁波柏尔环保科技有限公司
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