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Road coating for purifying automotive tail gas and preparation method of coating

A technology for automobile exhaust and roads, applied in chemical instruments and methods, separation methods, epoxy resin coatings, etc., can solve problems such as large pollution and unsatisfactory photocatalyst loading effect, and achieve high production efficiency, green and pollution-free process, The effect of firm load

Inactive Publication Date: 2019-11-01
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the widely used technology of using exhaust gas purification catalysts to treat automobile exhaust is usually to load the catalyst on a carrier with a high specific surface area to improve the catalytic effect, which has the problems of large pollution and unsatisfactory photocatalyst loading effect. The present invention proposes A road coating and preparation method for purifying automobile exhaust gas can effectively solve the above-mentioned technical problems

Method used

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  • Road coating for purifying automotive tail gas and preparation method of coating

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Comparison scheme
Effect test

Embodiment 1

[0028] (1) Add titanium dioxide and nano-glass powder with an average particle size of 300nm to the diatomite powder, and mix evenly to obtain a mixed powder; the mass of titanium dioxide is 48% of the diatomite powder; the mass of nano-glass powder is the mass of titanium dioxide 5%. ;

[0029] (2) In the presence of protective gas, the mixed powder obtained in step (1) is laser welded by laser scanning technology, so that the glass powder is slightly fused and interconnected with the surface of nano-titanium dioxide, and is firmly combined with the diatomite carrier to obtain Diatomite welding is loaded with nano-titanium dioxide; the protective gas is nitrogen; the laser welding adopts carbon dioxide continuous laser welding, the laser power is 15mW, and the welding time is 700ns;

[0030](3) First mix water, wollastonite powder, limestone, methyl cellulose, water-based epoxy resin glue, bentonite, dispersant, and defoamer evenly, and then add the diatomite welding-loaded ...

Embodiment 2

[0032] (1) Add titanium dioxide and nano-glass powder with an average particle size of 300nm to the diatomite powder, and mix evenly to obtain a mixed powder; the mass of titanium dioxide is 45% of the diatomite powder; the mass of nano-glass powder is the mass of titanium dioxide 5% of

[0033] (2) In the presence of protective gas, the mixed powder obtained in step (1) is laser welded by laser scanning technology, so that the glass powder is slightly fused and interconnected with the surface of nano-titanium dioxide, and is firmly combined with the diatomite carrier to obtain Diatomite welding loaded nano-titanium dioxide; protective gas is argon; laser welding adopts carbon dioxide continuous laser welding, laser power 15mW, welding time 1300ns;

[0034] (3) First mix water, wollastonite powder, limestone, methyl cellulose, water-based epoxy resin glue, bentonite, dispersant, and defoamer evenly, and then add the diatomite welding-loaded nano-titanium dioxide obtained in st...

Embodiment 3

[0036] (1) Add titanium dioxide and nano-glass powder with an average particle size of 400nm to the diatomite powder, and mix evenly to obtain a mixed powder; the mass of titanium dioxide is 55% of the diatomite powder; the mass of nano-glass powder is the mass of titanium dioxide 5% of

[0037] (2) In the presence of protective gas, the mixed powder obtained in step (1) is laser welded by laser scanning technology, so that the glass powder is slightly fused and interconnected with the surface of nano-titanium dioxide, and is firmly combined with the diatomite carrier to obtain Diatomite welding loaded nano-titanium dioxide; protective gas is helium; laser welding adopts carbon dioxide continuous laser welding, laser power 30mW, welding time 500ns;

[0038] (3) First mix water, wollastonite powder, limestone, methyl cellulose, water-based epoxy resin glue, bentonite, dispersant, and defoamer evenly, and then add the diatomite welding-loaded nano-titanium dioxide obtained in st...

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Abstract

The invention relates to the field of automotive tail gas purification, and discloses a road coating for purifying automotive tail gas and a preparation method of the coating. The preparation method comprises the following steps: (1) uniformly mixing nano titanium dioxide and diatomite powder; (2) carrying out laser welding on the mixed powder by adopting a laser scanning technology to obtain diatomite welded and supported nano titanium dioxide; and (3) uniformly mixing water, wollastonite powder, limestone, methyl cellulose, water-borne epoxy resin glue, bentonite, a dispersing agent, a defoaming agent and the diatomite welded and supported nano titanium dioxide to obtain the road coating for purifying the automotive tail gas. According to the method provided by the invention, the diatomite is loaded with nano titanium dioxide through glass powder assistance and laser welding, the process is green and pollution-free, the production efficiency is high, the loading is firmer, the nano titanium dioxide does not easily fall off, the further prepared road coating has strong adsorption capacity, a large amount of the tail gas can be adsorbed on the surfaces of catalyst particles, the degradation efficiency of the tail gas is improved, and the actual industrial application of a photocatalysis technology is broadened.

Description

technical field [0001] The invention relates to the field of automobile exhaust purification, and discloses a road coating for purifying automobile exhaust and a preparation method thereof. Background technique [0002] With the rapid and high-speed development of our country's economy, the living standards of our people continue to improve, and the number of cars in our country has increased rapidly. Today's social cars have become an indispensable means of transportation. However, with the increase in the number of cars, car exhaust emissions have caused environmental pollution pollution is also becoming more and more serious. The main components of automobile exhaust are CO and NO x , SO 2 etc., which seriously endanger people's health and environmental quality. According to statistics, 60% of CO and 50% of NO in major cities in China x , 30% of hydrocarbons are caused by vehicle exhaust. At present, the main control methods for automobile exhaust pollution are organ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/61C09D7/62C09D7/65B23K26/21B01D53/94
CPCB01D53/94B01D2255/802B23K26/21B23K2103/50B23K2103/54C08K2003/2241C08K2003/265C08K2201/011C08L2205/035C09D163/00C09D7/61C09D7/62C09D7/65C08L1/28C08K13/06C08K9/12C08K3/22C08K3/346C08K3/34C08K3/26
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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