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High-viscosity asphalt material for purifying automobile exhaust and preparation method thereof

A technology of asphalt material and automobile exhaust gas, which is applied in chemical instruments and methods, separation methods, building insulation materials, etc., can solve the problems of only functioning under sunlight, increasing process pollution and cost, and large void ratio.

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bio-based fillers mentioned in the patent need to undergo a series of complex processing processes such as acid treatment, ball milling, drying, and surface modification, which will inevitably increase process pollution and cost, and it is not easy to implement
[0009] To sum up, although the common asphalt materials for purifying automobile exhaust pollutants in the prior art can decompose the automobile exhaust pollutants on the road to a certain extent, they have problems such as poor adsorption of exhaust gas and can only function under sunlight.
At the same time, the high-viscosity asphalt pavement has a large void ratio, and the exhaust gas on the road surface is likely to remain in the voids and increase the negative impact on people and vegetation near the ground surface. The high-viscosity asphalt in the prior art has many types of polymers, and basically Does not take into account the negative impact of vehicle exhaust on its road performance
At present, no literature has been found on high-viscosity asphalt materials with the function of purifying automobile exhaust

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Add 3g Yb 2 o 3 The carrier was dispersed in 150 mL deionized water, stirred at 200 rpm until uniformly dispersed; 0.5 g Ni(NO 3 ) 2 In the solution, keep stirring at 200 rpm for 1.5 h; add 0.1 mol / L K 2 CO 3 Adjust the pH of the solution to 8, and keep stirring at 400 rpm for 3 h; filter it with suction, dry it at 90°C to obtain a solid substance, put it into a muffle furnace at 300°C and roast it for 3h to obtain asphalt modifier A1.

[0046] (2) 100 parts by weight of asphalt, wherein the penetration of the asphalt (25°C, 100g, 5s, 1 / 10mm) is 71; 7 parts by weight of styrene-butadiene block copolymer, 0.3 parts by weight of stable agent, 6 parts by weight of biomass heavy oil, sheared and stirred at 160°C for 20 minutes, and the rotation speed was 2000rpm; after the shearing was completed, the temperature was raised to 180°C, and 2 parts by weight of DOA and 4 parts by weight of (1) were slowly added The asphalt modifier was stirred for 3 hours at a rotation...

Embodiment 2

[0048] (1) Add 3 g La 2 o 3 The carrier was dispersed in 250 mL deionized water, stirred at 300 rpm until uniformly dispersed; 4.8 g Co(NO 3 ) 2 In the solution, keep stirring at 300 rpm for 2 h; use a separatory funnel to add 0.1 mol / L KOH solution dropwise, adjust the pH to 9, and continue stirring at 500 rpm for 3 h; filter with suction and dry at 90 °C The obtained solid matter was put into a muffle furnace for 3 hours of roasting at 400° C. to obtain asphalt modifier A2.

[0049] (2) 100 parts by weight of asphalt, wherein the penetration of the asphalt (25°C, 100g, 5s, 1 / 10mm) is 61; 11 parts by weight of styrene-butadiene block copolymer, 0.6 parts by weight of stable agent, 14 parts by weight of biomass heavy oil, shearing and stirring at 170°C for 30 min at a speed of 3000 rpm; after the shearing was completed, the temperature was raised to 190°C, and 3 parts by weight of DOA and 5 parts by weight of (1) The asphalt modifier described in , was stirred at 800 rpm f...

Embodiment 3

[0051] (1) 3g CeO 2 The carrier was dispersed in 300 mL of deionized water, stirred at 400 rpm until uniformly dispersed; 3.59 g of Mn(CH 3 COO) 2 In the solution, keep stirring at 400 rpm for 3 h; use a separatory funnel to add 0.1 mol / L Na 2 CO 3 Adjust the pH of the solution to 10, and keep stirring at 500 rpm for 5 h; filter it with suction, dry it at 90°C to obtain a solid substance, put it into a muffle furnace at 400°C and roast it for 5h to obtain asphalt modifier A3.

[0052] (2) 100 parts by weight of asphalt, wherein the penetration of the asphalt (25°C, 100g, 5s, 1 / 10mm) is 90; 9 parts by weight of styrene-butadiene block copolymer, 0.5 parts by weight of stable agent, 10 parts by weight of biomass heavy oil, shearing and stirring at 165°C for 30 min at a speed of 2000 rpm; after the shearing was completed, the temperature was raised to 185°C, and 4 parts by weight of DOA and 13 parts by weight of (1) were slowly added The asphalt modifier was stirred for 5 hou...

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Abstract

The invention discloses a high-viscosity asphalt material for purifying automobile exhaust and a preparation method of the high-viscosity asphalt material. The high-viscosity asphalt material comprises the following components in parts by weight: 100 parts of matrix asphalt; 1-20 parts of an asphalt modifier; 3-20 parts of biomass heavy oil; 5-18 parts of a thermoplastic block copolymer; 0.1-1 part of a stabilizer; and 1 to 15 parts of DOA. The asphalt modifier takes a lanthanide metal oxide as a carrier and a transition metal oxide as a catalytic active component. The high-viscosity asphalt material disclosed by the invention can efficiently and durably purify main pollutants such as nitrogen oxides in automobile exhaust in a pavement temperature range no matter whether sunlight exists or not, and meanwhile, the noise pollution of urban pavements is effectively reduced, the friction force of the pavements is enhanced, the generation of water films is inhibited, and the material can be widely applied to construction of modern asphalt pavements and sponge cities.

Description

technical field [0001] The invention relates to a high-viscosity asphalt material and a preparation method thereof, in particular to a high-viscosity asphalt material for purifying automobile tail gas and a preparation method thereof. Background technique [0002] With the development of the automobile industry and the increase in the number of automobiles, the hazards of automobile exhaust are becoming more and more serious, which has caused certain damage to the ecological environment balance and human health, and is one of the sources of environmental pollution. The pollutants contained in automobile exhaust mainly include CO produced by incomplete combustion of fuel, hydrocarbons that can cause photochemical smog, nitrogen oxides that are extremely harmful to humans, and SO 2 and tiny particles (composed of soot, lead oxides and other heavy metal oxides), etc. In addition, studies in recent years have shown that motor vehicle exhaust emissions also cause NH in urban are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08L53/02C08K9/12C08K3/22B01D53/94
CPCC08L95/00B01D53/94C08L2205/035C08L2205/025C08L2555/84C08L2555/50C08L2555/74C08K2003/2262C08K2003/2289C08K2003/2293C08L91/00C08L53/02C08K9/12C08K3/22Y02A50/20
Inventor 郭小圣郭皎河张建峰傅丽刘树华徐青柏刘成吴晓颖
Owner CHINA PETROLEUM & CHEM CORP
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