Lignin modified asphalt composition with steady heat storage and preparation method thereof

A technology for modifying asphalt and lignin, which is applied in building structures, building components, building thermal insulation materials, etc., can solve problems such as stability of lignin-modified asphalt, less than 10% utilization rate, waste of resources, etc. Beneficial for mass production, high solubility and permeation properties, lower settling velocity effects

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although humans have used cellulose for thousands of years, the current utilization rate of industrial lignin is less than 10%, and most of it is burned as fuel and discharged as waste, wasting resources and polluting the environment.
Because the method contains more than 50% (mass fraction) of water in the black liquor, dehydration in asphalt and / or lubricating oil is very time-consuming (more than 2 hours), and wastes energy
More importantly, the patent does not address the stability of lignin-modified bitumen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 978g of asphalt in sand with a penetration of 90 (1 / 10mm) into a 2-liter enamel cup. The temperature of the asphalt in sand is 140°C, then add 10g of lignin (S2), 10g of ethylene glycol butyl ether and 2g of N-tallow-1,3-propylenediamine, start the high shear machine to cut for 30min. Then, take out about 400g of the sample to measure its properties, then take out 50g and put it into an aluminum toothpaste tube, put the toothpaste tube containing the sample into a blast drying oven at 140°C, and conduct a high-temperature storage test. The results are shown in Table 1.

Embodiment 2

[0027] Add 950g of asphalt in the sand with a penetration of 90 (1 / 10mm) in a 2-liter enamel cup. The temperature of the asphalt in the sand is 140°C, and then add 30g of lignin (S1) and 20g of ethylene glycol phenyl ether respectively. Start the high shear machine to cut for 30min. Then, take out about 400g of the sample to measure its properties, then take out 50g and put it into an aluminum toothpaste tube, put the toothpaste tube containing the sample into a blast drying oven at 140°C, and conduct a high-temperature storage test. The results are shown in Table 1.

Embodiment 3

[0029] Add 947g of asphalt in sand with a penetration of 90 (1 / 10mm) into a 2-liter enamel cup. The temperature of asphalt in sand is 140°C. The ionic emulsifier nonylphenol polyoxyethylene ether (n=10), namely NP-10, was cut by the high shear machine for 30 minutes. Then, take out about 400g of the sample to measure its properties, then take out 50g and put it into an aluminum toothpaste tube, put the toothpaste tube containing the sample into a blast drying oven at 140°C, and conduct a high temperature storage test. The results are shown in Table 1.

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Abstract

The invention discloses a lignin modified asphalt composition and a preparation method thereof. The asphalt composition comprises 65 to 98 percent of residue oil and/or asphalt, 1 to 20 percent of lignin, and 0.5 to 15.0 percent of stabilizer. The method utilizes glycol ether and/or phenol with a boiling point over 110 DEG C as the stabilizer, adopts an emulsifier further to disperse the lignin so as to promote the lignin to be uniformly and steadily dispersed into the asphalt, can obviously reduce the settling velocity of the lignin in the asphalt, and improve the stability of lignin modified asphalt, thereby contributing to the mass production of the lignin modified asphalt.

Description

technical field [0001] The invention relates to a lignin-modified asphalt composition and a preparation method thereof, in particular to a lignin-modified asphalt composition in which lignin is stably dispersed in asphalt and a preparation method thereof. Background technique [0002] Lignin is a complex high molecular polymer with a three-dimensional spatial structure, which forms the skeleton of plants together with cellulose and hemicellulose. The content of lignin in land plants is second only to cellulose, and it is the second largest natural organic matter, accounting for 15%-30% of lignocellulosic biomass, and papermaking waste liquid is its main industrial source. Although humans have used cellulose for thousands of years, the current utilization rate of industrial lignin is less than 10%, and most of it is burned as fuel and discharged as waste, wasting resources and polluting the environment. [0003] In order to solve the energy shortage, people are stepping up t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L97/00C08K5/06C08K5/13C08J3/205C04B26/26
Inventor 刘树华黎元生宁爱民
Owner CHINA PETROLEUM & CHEM CORP
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