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Bio-based flame-retardant modified asphalt and preparation method thereof

A modified asphalt, bio-based technology, applied in the direction of building structure, building components, building insulation materials, etc., can solve the problems of smoke and toxic gases, thermodynamic instability, poor ventilation conditions, etc., to improve safety and save energy Energy consumption, the effect of solving energy shortage

Active Publication Date: 2018-05-04
山西省交通科技研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for closed environments such as tunnels, due to the flammable nature of asphalt and poor ventilation conditions in the tunnel, once a fire breaks out, it will cause a lot of loss of life and property due to the rapid development of the fire, and cause serious pollution to the environment. Therefore, the development of flame retardant Asphalt with smoke suppression function is very necessary
[0004] The early halogenated flame retardants have high flame retardant effect, but they will produce smoke and toxic gases during the combustion process, which is not environmentally friendly.
As an environmentally friendly flame retardant, metal hydroxide has the characteristics of flame retardancy, smoke suppression and reduction of secondary pollution, but it forms a thermodynamically unstable system with asphalt, and it is easy to segregate with asphalt

Method used

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  • Bio-based flame-retardant modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Heat 100 parts of No. 30 hard asphalt at 140-180°C to a fluid state, add 3 parts of Fischer-Tropsch wax into the hard asphalt and shear and stir for 10-30 minutes to obtain warm mixed hard asphalt, add 2 parts of sebacic acid di Add octyl ester to warm hard asphalt and mix well, then add 2 parts of Ca-Zn stabilizer, mix well to get the first mixture; add 2.5 parts of L(+)-tartaric acid to 30 parts of modified plant asphalt Mix the materials uniformly to obtain the second mixture; stir or shear the first mixture and the second mixture for 10-30 minutes at 120-160°C, mix well, and then add 5 parts of microcapsule flame retardant to obtain bio-based flame retardant modified asphalt.

[0032] Preparation of modified plant asphalt: first flash plant asphalt to pre-remove water and small molecule volatiles; use silica sol and zirconium oxychloride as raw materials to synthesize Zr-Si with ZSM-5 structure by hydrothermal method Molecular sieve, then treat the molecular sieve ...

Embodiment 2

[0034] Heat 100 parts of No. 20 hard asphalt at 140-180°C to a fluid state, add 2.5 parts of Sasobit into the hard asphalt and shear and stir for 10-30 minutes to obtain warm mixed hard asphalt, add 3 parts of epoxy octyl oleate Add 2.5 parts of phosphoric acid ester to the warm hard asphalt and mix evenly to obtain the first mixture; add 1.5 parts of L(+)-tartaric acid and 1 part of 2-hydroxyl-4-n-dodecyloxy Add benzophenone to 25 parts of modified plant asphalt and mix the materials uniformly to obtain the second mixture; stir or shear the first mixture and the second mixture for 10-30min at 120-160°C, mix uniformly, and then mix 8 Parts of microcapsule flame retardant was added to obtain bio-based flame retardant modified asphalt.

[0035] Preparation of modified plant asphalt: first flash plant asphalt to pre-remove water and small molecule volatiles; use silica sol and zirconium oxychloride as raw materials to synthesize Zr-Si with ZSM-5 structure by hydrothermal method ...

Embodiment 3

[0037] Heat 100 parts of No. 30 hard asphalt at 140-180°C to a fluid state, add 3 parts of palm wax to the hard asphalt and shear and stir for 10-30 minutes to obtain warm mixed hard asphalt, add 3 parts of acetyl citrate tributyl Add ester to warm hard asphalt and mix evenly, then add 3 parts of phosphate ester, mix well to get the first mixture; add 2.5 parts of (+)-bisabolactone A to 40 parts of modified plant asphalt and mix The material is uniform to obtain the second mixture; the first mixture and the second mixture are stirred or sheared for 10-30min at 120-160°C, and mixed evenly, and then 10 parts of microcapsule flame retardant are added to obtain a bio-based flame retardant improvement. Sexual asphalt.

[0038] Preparation of modified plant asphalt: first flash plant asphalt to pre-remove water and small molecule volatiles; use silica sol and zirconium oxychloride as raw materials to synthesize Zr-Si with ZSM-5 structure by hydrothermal method Molecular sieve, then...

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Abstract

The invention belongs to the technical field of asphalt materials, and relates to bio-based flame-retardant modified asphalt and a preparation method thereof. The bio-based flame-retardant modified asphalt comprises 100 parts of hard asphalt, 0.5-5 parts of a warm mixing agent, 1-5 parts of a plasticizer, 1-5 parts of a stabilizer, 1-50 parts of modified plant asphalt, 1-5 parts of an antiaging agent and 1-20 parts of a microcapsule flame retardant. Compared with the prior art, the bio-based flame-retardant modified asphalt has the advantages as follows: with the hard asphalt and the bio-basedplant asphalt as raw materials, own advantages of the hard asphalt and the bio-based plant asphalt are fully combined to form a combined effect of softness and hardness; meanwhile, supplemented by additives and modifying measures for making up own defects, bio-based modified asphalt with excellent performance is finally prepared; meanwhile, through addition of the microcapsule flame retardant, the bio-based flame-retardant modified asphalt has flame-retardant and smoke-suppressing functions. In the preparation process, used materials are environmentally friendly, wastes are turned into treasures, and the obtained flame-retardant modified asphalt not only has various excellent performance, but also can achieve flame retardance and smoke suppression, and is of great advantage to reducing casualties and material loss in a fire disaster.

Description

technical field [0001] The invention belongs to the technical field of asphalt materials, and in particular relates to a bio-based flame-retardant modified asphalt and a preparation method thereof. Background technique [0002] With the vigorous development of my country's transportation industry and the continuous improvement of infrastructure, the problems of energy shortage and environmental pollution have become increasingly prominent. Petroleum bitumen is a product of the crude oil processing process, which is the residue after crude oil distillation. Due to its own properties, it is widely used in road paving and construction fields, and the global demand for bitumen remains high. According to the latest report of "Transparency Market Research" in the United States, the global demand for asphalt is expected to reach 121.99 million tons in 2018, with a compound annual growth rate of 2.3% from 2012 to 2018. As the pace of development accelerates, the defects of asphalt ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L91/06C08K13/06C08K5/11C08K9/10C08K9/06C08K3/32C08K5/1515
CPCC08K2003/323C08L95/00C08L2201/02C08L2201/08C08L2205/025C08L2205/03C08L2205/18C08L2555/24C08L91/06C08K13/06C08K5/11C08K9/10C08K9/06C08K3/32C08K5/1515
Inventor 王威马德崇樊长昕殷传峰刘俊权刘刚徐庆峰王征
Owner 山西省交通科技研发有限公司
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