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High-viscosity asphalt modifier, high-viscosity asphalt material and preparation methods of high-viscosity asphalt modifier and high-viscosity asphalt material

An asphalt modifier and asphalt material technology, applied in building thermal insulation materials, chemical instruments and methods, air quality improvement, etc., can solve the negative impact of vehicle exhaust road performance, asphalt material stability and long-term storage performance without considering To be investigated, to increase the negative impact and other issues, to achieve the effect of improving adsorption efficiency and conversion efficiency, improving conversion efficiency and duration of action, and improving adsorption and purification performance

Active Publication Date: 2021-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many types of polymers to be added, and the properties of each polymer vary greatly. The stability and long-term storage performance of asphalt materials need to be investigated.
[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.
In addition, there are many types of polymers added to high-viscosity asphalt in the prior art, and the negative impact of automobile exhaust on its road performance is basically not considered
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

[0060] (1) Disperse 3 g of carbon nanotube carrier in 150 mL of deionized water and stir at 200 rpm until uniformly dispersed; the carbon nanotube carrier is an industrial-grade multi-walled carbon nanotube with an outer diameter of 80 nm and a purity of 97 wt% , specific surface area 120 m 2 / g. Add 0.75g 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.

[0061] (2) 100 parts by weight of asphalt, wherein the penetration of the asphalt (25°C, 100g, 5s, 1 / 10mm) is 71; 6 parts by weight of styrene-butadiene block copolymer, styrene-butadiene The diene block copolymer is a white linear structure particle, and the block ratio S / B is 20 / 80. 0.2 parts by weight of stabilizer elemental sulfur, 5 parts by weight o...

Embodiment 2

[0063] (1) Disperse 3 g of carbon nanotube carriers in 250 mL of deionized water, and stir at 300 rpm until uniformly dispersed; the carbon nanotube carriers are industrial-grade multi-walled carbon nanotubes with an outer diameter of 80 nm and a purity of 97 wt %, specific surface area 120 m 2 / g. Add 1.2 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.

[0064] (2) 100 parts by weight of asphalt, wherein the penetration of the asphalt (25°C, 100g, 5s, 1 / 10mm) is 61; 12 parts by weight of styrene-butadiene block copolymer, styrene-butadiene The diene block copolymer is a white linear structure particle, and the block ratio S / B is 40 / 60. 0.7 parts by weight of stabilizer, vulca...

Embodiment 3

[0066] (1) Disperse 3 g of carbon nanotube carrier in 300 mL of deionized water and stir at 400 rpm until uniformly dispersed; the carbon nanotube carrier is an industrial-grade multi-walled carbon nanotube with an outer diameter of 80 nm and a purity of 97 wt% , specific surface area 120 m 2 / g. Add 0.9gMn(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.

[0067] (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, styrene-butadiene The diene block copolymer is a white linear structure particle, and the block ratio S / B is 20 / 80. The mixture of 0.5 parts by weight of stabi...

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Abstract

The invention discloses a high-viscosity asphalt modifier, a high-viscosity asphalt material and preparation methods of the high-viscosity asphalt modifier and the high-viscosity asphalt material. The high-viscosity asphalt modifier takes a carbon nanotube as a carrier and a transition metal oxide as a catalytic active component; the using amount of the transition metal is 10%-100% of the mass of the carbon nanotube. The outer diameter of the carbon nanotube is 50-100 nm, the purity is greater than 95 wt%, and the specific surface area is greater than 100 m < 2 > / g. The invention also provides a high-viscosity asphalt material, and 1-20 parts of the high-viscosity asphalt modifier is added into every 100 parts of matrix asphalt. 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 product 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 modifier, a high-viscosity asphalt material and a preparation method thereof, in particular to a high-viscosity asphalt modifier for purifying automobile tail gas, a high-viscosity asphalt material 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K13/06C08K9/12C08K3/22C08K7/24C08K3/04B01J23/889
CPCC08L95/00B01J23/8892C08K2003/2262C08K2003/2289C08K2201/003C08K2201/006C08L53/02C08K13/06C08K9/12C08K3/22C08K7/24C08K3/041Y02A50/20
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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