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Road guardrail plastic masterbatch for purifying automobile exhaust and preparation method thereof

A technology of automobile exhaust and plastic masterbatch, applied in the field of plastic masterbatch, can solve the problems of unsatisfactory efficiency, affecting purification efficiency, insufficient adsorption, etc., achieve good photocatalytic activity and visible light utilization rate, excellent purification effect, and significant purification effect Effect

Inactive Publication Date: 2019-09-03
CHENDU NEW KELI CHEM SCI CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] It can be seen that when using photocatalytic technology to purify automobile exhaust in the prior art, there are shortcomings such as photocatalytic activity, insufficient adsorption, and unsatisfactory efficiency. In addition, graphite phase carbon nitride as a new photocatalytic material has photogenerated electron holes. The high recombination rate leads to a decrease in its photocatalytic activity and insufficient adsorption, which affects the purification efficiency

Method used

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  • Road guardrail plastic masterbatch for purifying automobile exhaust and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Mix 97kg of cyanoamine with 3kg of nano-calcium carbonate, grind at a speed of 260r / min for 34min, then move it into a tube furnace, heat it to 500°C for 2h under the atmosphere of argon, and then continue to grind the product 48min, after the end, it was washed 3 times with hydrochloric acid with a mass concentration of 13%, then washed 3 times with distilled water, and dried to obtain nanoscale porous graphite carbon nitride; then 17kg porous graphite carbon nitride, 8kg titanium Add tetrabutyl nitrate into 34g of absolute ethanol, stir vigorously at a speed of 500~600r / min for 30~40min to obtain solution A; then immerse 27kg of graphene airgel in solution A, and add 11kg of nitric acid / dehydrated ethanol Mixed solution, in the mixed solution of nitric acid / absolute ethanol, the volume ratio of nitric acid with a mass concentration of 15% and absolute ethanol is 7:93, and continue to stir at a speed of 360r / min until a sol is formed; then slowly add 3kg Sodium borohyd...

Embodiment 2

[0029] Mix 96kg of dicyanoamine with 4kg of nano-calcium carbonate, grind at a speed of 220r / min for 38min, then move it into a tube furnace, heat it to 400°C for 3h under the atmosphere of argon, and then continue to grind the product 45min, after the end, it was washed 4 times with hydrochloric acid with a mass concentration of 12%, then washed 2 times with distilled water, and dried to obtain nano-scale porous graphite carbon nitride; then 16kg porous graphite carbon nitride, 7kg titanium Tetrabutyl acid was added in 38kg of absolute ethanol, stirred vigorously at a speed of 520r / min for 38min to obtain solution A; then 27kg of graphene airgel was immersed in solution A, and 9kg of nitric acid / dehydrated ethanol mixed solution was added, nitric acid In / dehydrated ethanol mixed solution, mass concentration is 10% nitric acid, the volume ratio of absolute ethanol is 6:94, continues to stir until forming sol with the rotating speed of 320r / min; Slowly add 3kg sodium borohydride...

Embodiment 3

[0032] Mix 98kg melamine with 2kg nano-calcium carbonate, grind at a speed of 280r / min for 32min, then move it into a tube furnace, heat it to 500°C for 2h under the atmosphere of argon, then continue grinding the product for 55min, and end After that, it was washed 4 times with hydrochloric acid with a mass concentration of 14%, then washed 3 times with distilled water, and dried to obtain nano-scale porous graphite carbon nitride; then 17kg porous graphite carbon nitride, 9kg tetrabutyl titanate Add the ester to 31kg of absolute ethanol, stir vigorously at a speed of 580r / min for 32min to obtain solution A; then immerse 28kg of graphene airgel in solution A, and add 11kg of nitric acid / dehydrated ethanol mixed solution, nitric acid / dehydrated In the ethanol mixed solution, the volume ratio of nitric acid with a mass concentration of 20% and absolute ethanol is 9:91, and continue to stir at a speed of 380r / min until a sol is formed; then slowly add 4kg of sodium borohydride to...

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Abstract

The invention belongs to the technical field of plastic masterbatches, and provides a road guardrail plastic masterbatch for purifying automobile exhaust and a preparation method thereof. According tothe method, a nitrogen-rich raw material is used to prepare nano-grade porous graphite phase carbon nitride, the nano-grade porous graphite phase carbon nitride, tetrabutyl titanate, graphene aerogel, a nitric acid / absolute ethyl alcohol mixed solution, sodium borohydride and absolute ethyl alcohol as raw materials are used to prepare graphene aerogel / titanium dioxide / graphite phase carbon nitride solid powder, and after being treated by a coupling agent, the graphene aerogel / titanium dioxide / graphite phase carbon nitride solid powder is mixed with linear low density polyethylene, polypropylene, polyvinyl chloride and an auxiliary agent for extrusion granulation to prepare the road guardrail plastic masterbatch for purifying the automobile exhaust. Compared with the traditional method, the prepared plastic masterbatch not only has good adsorption performance, but also has good photocatalytic activity and visible light utilization rate, and a road guardrail prepared by using the masterbatch has remarkable purification effect on the automobile exhaust.

Description

technical field [0001] The invention belongs to the technical field of plastic masterbatch, and provides a plastic masterbatch used for road guardrails to purify 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 large cities in China x , 30% of hydrocarbons are caused by vehicle exhaust. At present, the main control methods for automobile ex...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08L27/06C08L51/04C08L53/02C08L9/06C08K13/06C08K9/06C08K9/04C08K9/02C08K9/00C08K7/24C08K3/04C08K3/22C08K5/134
CPCC08K2003/2224C08K2003/2227C08K2003/265C08K2201/001C08K2201/011C08L23/0815C08L23/12C08L2205/035C08L27/06C08L51/04C08L53/02C08L9/06C08K13/06C08K9/06C08K9/04C08K9/02C08K9/00C08K7/24C08K3/042C08K5/1345C08K3/22
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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