A kind of bone glue modified asphalt and preparation method thereof

A technology of modified asphalt and bone glue, applied in building components, building insulation materials, buildings, etc., can solve the problems of poor fatigue performance of modified asphalt, heavy burden of road construction, complicated preparation process, etc., to reduce phase angle, improve Low temperature crack resistance, simple equipment requirements

Active Publication Date: 2022-04-26
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Propose a kind of rubber and SBS modified asphalt composition in CN106633964B, this composition improves asphalt storage problem, reduces asphalt viscosity, improves construction performance, but this technical preparation process is complicated, the fatigue performance of modified asphalt is relatively poor, restricts its application
CN108395711B proposes a mesoporous molecular sieve modified by chlorosilane and disodium tetrasulfide to modify asphalt, improve the anti-aging performance of matrix asphalt, and no toxic gas is emitted during the preparation process. This technology is only for short-term film oven thermal oxygen Aging, no long-term aging and UV aging data, affecting its promotion and use
In addition, all polymer modifiers are derived from petrochemical products, and their high prices impose a heavy burden on road construction

Method used

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  • A kind of bone glue modified asphalt and preparation method thereof
  • A kind of bone glue modified asphalt and preparation method thereof
  • A kind of bone glue modified asphalt and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] 1) Preparation of cellulose-reinforced BG-DOPA / Zn2+ material: After fully mixing 80g of BG and 160g of deionized water, add 7g of mixed alkali (4gNaOH+3gNa2CO3) into a 50°C water bath and continue stirring for 30min; then add 15g of DOPA, 1.5g NHS and 2.0g EDC were ultrasonically dispersed for 30min. After the mixed solution was evenly dispersed, put it into a 100°C water bath and continue stirring for 24h; add 4.2g ZnCl2 and 6g chitosan to the mixed solution, and continue to stir in a 100°C water bath for 60min. The BG-DOPA / Zn2+ compound is obtained; 10 g of cellulose is added to the BG-DOPA / Zn2+ compound, and the cellulose-reinforced BG-DOPA / Zn2+ material is obtained by ultrasonic dispersion.

[0020] 2) Preparation of Bone Glue Modified Asphalt Weigh 150g of international 70# road petroleum asphalt and place it in a water bath at 140°C. When it is heated to a molten state, add 10g of cellulose-reinforced BG-DOPA / Zn2+ material in batches, and manually stir until the mi...

Embodiment 2

[0022] 1) Preparation of cellulose-reinforced BG-DOPA / Zn2+ material: After fully mixing 100g BG and 220g deionized water, add 9g mixed alkali (4gKOH+5g K2CO3) into a 50°C water bath and continue stirring for 30min; then add 18gDOPA , 1.5g NHS, 2.0g EDC ultrasonically dispersed for 30min, put the mixture into a 100°C water bath after being evenly dispersed, and continue to stir for 24h; add 5.5gZnSO4 and 7.5g chitosan to the mixture, and continue to stir in a 100°C water bath for 60min , to obtain BG-DOPA / Zn2+ compound; 18g of cellulose was added to BG-DOPA / Zn2+ compound, and the cellulose-reinforced BG-DOPA / Zn2+ material was obtained by ultrasonic dispersion.

[0023] 2) Preparation of Bone Glue Modified Asphalt Weigh 150g of international 70# road petroleum asphalt and place it in a water bath at 140°C. When it is heated to a molten state, add 8.5g of cellulose-reinforced BG-DOPA / Zn2+ material in batches, and stir manually until mixed After there are no obvious bubbles in the...

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Abstract

This field belongs to the technical field of modified asphalt, and in particular relates to a bone glue modified asphalt and a preparation method thereof. The raw material of the invention comprises the following components: matrix pitch, bone glue (BG), dopamine (DOPA), mixed alkali, chitosan, zinc salt, cellulose, and diethyl phthalate (DEP). According to the adhesion mechanism of mussel molecules, the present invention uses the active group carboxyl group (COOH) in BG to undergo condensation modification reaction with amino group (NH2) in DOPA, and then coordinates with Zn2+ in zinc salt to form a stable Five-membered ring network BG DOPA / Zn2+ compound, adding cellulose to prepare cellulose-reinforced BG DOPA / Zn2+ material. By adding cellulose to the base asphalt to reinforce the BG DOPA / Zn2+ material, the complex modulus of the base asphalt is increased, the phase angle of the asphalt is reduced, and the low temperature crack resistance, rheological properties, and permanent deformation resistance of the base asphalt are improved ability and its anti-rutting ability.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt, and in particular relates to a bone glue modified asphalt and a preparation method thereof. Background technique [0002] Asphalt pavement has the advantages of good flatness, low noise, and convenient maintenance, and has become the main structural form of high-quality pavement in my country. However, under long-term repeated loads of vehicles and harsh external environmental conditions, damage modes such as subsidence, cracking, water damage, rutting, and low-temperature shrinkage cracking will appear on asphalt pavement, which are likely to have adverse effects on driving safety and pavement service life. Therefore, how to solve the above problems, prolong the service life of roads, improve road safety and realize high-performance asphalt pavement has always been a research hotspot. [0003] Previous studies have found that the use of polymers such as rubber, SBS, and styrene-butadie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L89/00C08L5/08C08L1/02C08K3/16C08K3/30C08K5/17
CPCC08L95/00C08K2003/168C08K2003/3045C08L2205/035C08L89/00C08L5/08C08L1/02C08K3/16C08K3/30C08K5/17
Inventor 王天舒史晓萍
Owner SHANDONG JIAOTONG UNIV
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