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Application of poplar wood powder liquefaction product as sustainable asphalt modifier, sustainable modified asphalt and preparation method

A technology of liquefied product and modified asphalt, applied in building structures, building components, building insulation materials, etc., can solve problems such as hindering an environment-friendly society, environmental pollution, restricting the long-term development of road materials, etc., to reduce the secondary environment. Pollution, improving liquefaction rate, and the effect of being beneficial to environmental protection

Active Publication Date: 2019-08-30
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, asphalt pavement materials are heavily dependent on the increasingly depleted petroleum energy, and the mass production of petroleum asphalt and polymer modifiers leads to serious environmental pollution, which restricts the long-term development of road materials in my country and hinders a resource-saving and environment-friendly society. construction

Method used

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  • Application of poplar wood powder liquefaction product as sustainable asphalt modifier, sustainable modified asphalt and preparation method

Examples

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preparation example Construction

[0022] (2) the preparation method of above-mentioned poplar wood powder liquefaction product, comprises the following steps:

[0023] Step 1, further pulverize the poplar wood powder, pass through a 60-mesh sieve, dry to constant weight, cool, and set aside;

[0024] Step 2, mix the pulverized poplar wood powder, liquefaction agent and catalyst into the reaction kettle, feed nitrogen into the reaction kettle to discharge the air in the reaction kettle, carry out the liquefaction reaction at a certain temperature and time, and the reaction ends Finally, the gas in the reactor is discharged, and the liquefied product is cooled to room temperature to obtain a sustainable asphalt modifier.

[0025] In step 1, the maximum particle size of the wood powder is 60 mesh.

[0026] In step 1, the drying temperature is 105° C., and the drying time is 24 hours.

[0027] In step 2, the initial pressure of the reactor is 3-4 MPa.

[0028] In step 2, the temperature of the liquefaction reac...

Embodiment 1

[0036] A preparation method of sustainable asphalt modifier, comprising the following steps:

[0037] Step 1: Use a micro-plant pulverizer to further pulverize the poplar wood powder, pass through a 60-mesh sieve, place the poplar wood powder that has passed through the sieve in a drying oven at 105°C for 24 hours, cool to room temperature, and set aside.

[0038] Step 2, mix 10g poplar wood powder, 25g liquefaction agent (the mass ratio of p-hydroxyphenylethyl alcohol, polyethylene glycol 400 and glycerol in the liquefaction agent is 1:5:4) and 2g p-toluenesulfonic acid and add To the reactor, open the vent valve and exhaust valve of the reactor at the same time, and continue to feed nitrogen for 1min to remove the air in the reactor. Close the vent valve, and continue to fill with nitrogen until the pressure in the reactor reaches 4MPa, then close the vent valve. Start the reactor, and liquefy at 180°C for 90 minutes. After the reaction is complete, discharge the gas in the...

Embodiment 2

[0042] A preparation method of sustainable asphalt modifier, comprising the following steps:

[0043] Step 1: Use a micro-plant pulverizer to further pulverize the poplar wood powder, pass through a 60-mesh sieve, place the poplar wood powder that has passed through the sieve in a drying oven at 105°C for 24 hours, cool to room temperature, and set aside.

[0044] Step 2, after mixing 10g poplar wood powder, 30g liquefaction agent (the mass ratio of p-hydroxyphenylethyl alcohol, polyethylene glycol 400 and glycerol in the liquefaction agent is 1:5:4) and 2.1g p-toluenesulfonic acid Add it into the reaction kettle, open the ventilation valve and exhaust valve of the reaction kettle at the same time, and continue to feed nitrogen for 1min to remove the air in the reaction kettle. Close the exhaust valve, and continue to fill with nitrogen until the pressure in the reactor reaches 3.5MPa and then close the vent valve. Start the reactor, and liquefy at 160°C for 120 minutes. Afte...

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Abstract

The invention provides application of a poplar wood powder liquefaction product as a sustainable asphalt modifier, sustainable modified asphalt and a preparation method. The poplar wood powder liquefaction product is used as a matrix asphalt modifier for roads. The preparation method of the poplar wood powder liquefaction product comprises the following steps: adding poplar wood powder, a liquefying agent and a catalyst into a reaction kettle, uniformly mixing, inflating an inert gas to discharge air in the reaction kettle, keeping the pressure intensity in the reaction kettle to be 3-4MPa, and reacting for 90-150 min, wherein the liquefying agent comprises polyethylene glycol, glycerol and p-hydroxyphenylethanol. The poplar wood powder liquefaction product is added into matrix asphalt, and modification and development are performed to obtain the sustainable modified asphalt. The poplar wood powder liquefaction product is used for modifying asphalt for road engineering, so that the energy shortage and the environment pollution caused by production of an asphalt pavement material are alleviated.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to the application of a liquefied product of poplar wood flour as a sustainable asphalt modifier, sustainable modified asphalt and a preparation method. Background technique [0002] With the rapid development of my country's highway traffic construction, people's requirements for the performance of asphalt pavement show a trend of diversification, among which the long-term development of road asphalt materials and the requirements for economic and environmental protection are particularly critical. In recent years, the use of polymers to modify base asphalt has been studied to improve the asphalt's high-temperature anti-rutting performance, anti-aging performance and other related properties to meet people's requirements for asphalt pavement. However, asphalt pavement materials are heavily dependent on the increasingly depleted petroleum energy, and the mass production of petroleum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L97/02
CPCC08L95/00C08L2205/16C08L97/02
Inventor 赵浚凯丁湛裴仪栗培龙张静岳向京蒋修明
Owner CHANGAN UNIV
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