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Ultraviolet-aging-resistant SBR (styrene butadiene rubber) modified asphalt and preparation method thereof

A modified asphalt, UV-resistant technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of SBS modified asphalt structure and performance, difficult to mix, poor road traffic capacity, etc., to avoid precipitation and segregation, improve high and low temperature performance, and reduce the effect of collision agglomeration

Active Publication Date: 2015-02-18
JIANGSU BAOLI INT INVESTMENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aging and damage of the asphalt pavement is serious. There are many broken roads on the national and provincial roads. The traffic capacity of the existing roads is poor. Except for the Qinghai-Tibet Highway, other trunk roads are seriously blocked due to various diseases
[0003] Ultraviolet light causes high energy density and strong destructiveness, which has a great impact on the structure and performance of SBS modified asphalt. Conventional modified asphalt cannot adapt to the current climate characteristics of strong ultraviolet rays in plateau areas such as Tibet and Qinghai. Patent CN102190957A proposes the use of magnesium-aluminum substrates Shaped dihydroxyl conforms to the excellent UV reflective properties of metal hydroxides to improve the UV aging resistance of SBS modified asphalt coating materials. Patent CN200810204209.4 proposes to compound UV absorbers in asphalt to improve the UV aging resistance of asphalt
However, this compound is prone to chemical changes such as volatilization and decomposition after the modified asphalt temperature reaches 180°C-190°C, and the desired effect cannot be achieved.
In addition, the above-mentioned technologies are all theoretical discussions. In practical applications, when the material is used as an additive in the production and processing of UV aging-resistant modified asphalt, it is difficult to miscible with the polymer compound of modified asphalt, and segregation is easy to occur. Caused transport tanker and asphalt mixing system to be paralyzed due to blockage
Therefore, the application of this material in UV aging-resistant modified asphalt has great technical difficulties.

Method used

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  • Ultraviolet-aging-resistant SBR (styrene butadiene rubber) modified asphalt and preparation method thereof
  • Ultraviolet-aging-resistant SBR (styrene butadiene rubber) modified asphalt and preparation method thereof
  • Ultraviolet-aging-resistant SBR (styrene butadiene rubber) modified asphalt and preparation method thereof

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specific Embodiment 1

[0038] The raw materials were weighed according to the weight of the following components: 2 kg of magnesium-aluminum layered double hydroxide UV barrier material, 2 kg of reclaimed rubber, 1 kg of compatibilizer, and 2 kg of styrene-butadiene rubber, of which the magnesium-aluminum layered double hydroxide UV barrier material was produced by Jiangyin Produced by Ruifa Chemical Company, the magnesium-aluminum layered double hydroxide UV barrier material consists of magnesium-aluminum double hydroxide laminates and interlayer carbonates to form a multi-level layered structure, which belongs to anionic layered clay and belongs to Hexagonal crystal system, the specific composition is Mg 1-X al X (OH) 2 (CO 3 ) X / 2 mH 2 O, where the subscript X refers to the change of the content of metal elements, 0.2≤X≤0.33; m value represents the amount of crystal water, 0≤m≤2. Put the above-mentioned raw materials into a high internal mixer for internal mixing for 20 minutes; the temperat...

specific Embodiment 2

[0044] The raw materials were weighed according to the weight of the following components: 1.5 kg of magnesium-aluminum layered double hydroxide UV barrier material, 2 kg of reclaimed rubber, 1.6 kg of compatibilizer, and 1.8 kg of styrene-butadiene rubber, of which the magnesium-aluminum layered double hydroxide UV barrier The material is produced by Jiangyin Ruifa Chemical Co., Ltd. The magnesium-aluminum layered double hydroxide ultraviolet barrier material is composed of magnesium-aluminum double hydroxide laminates and interlayer carbonates to form a multi-level layered structure, which belongs to anionic layered Clay, belonging to the hexagonal crystal system, the specific composition is Mg 1-X al X (OH) 2 (CO 3 ) X / 2 mH 2 O, where the subscript X refers to the change of the content of metal elements, 0.2≤X≤0.33; m value represents the amount of crystal water, 0≤m≤2. The above-mentioned raw materials were put into a high internal mixer for internal mixing for 25 min...

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Abstract

The invention relates to ultraviolet-ageing-resistant SBR (styrene butadiene rubber) modified asphalt and a preparation method thereof. The ultraviolet-ageing-resistant SBR modified asphalt is characterized by being prepared by mixing he following components in percentage by mass: 7-30% of ultraviolet blocking modifier particles and 70-93% of matrix asphalt, wherein the ultraviolet blocking modifier particles are prepared by kneading and mixing the following materials in percentage by mass: 25%-45% of an SBR modifier, 20%-60% of magnesium-aluminum laminated dual-hydroxide ultraviolet blocking materials, 12%-18% of a compatilizer and 25%-35% of reclaimed rubber by virtue of banburying and mixing equipment. The modified asphalt prepared by the preparation method disclosed by the invention not only can be resistant to the high temperature in summer and low-temperature cold in winter, but also can be used for achieving good effects of physical reflecting, shielding and chemical absorbing for ultraviolet rays in the plateau section, reducing the early-stage diseases of the road surface and greatly prolonging the service life of the asphalt road surface, and can be applied to high-level road construction in the plateau section.

Description

technical field [0001] The invention relates to the technical field of modified asphalt for road engineering, in particular to modified asphalt suitable for areas with strong ultraviolet rays in the Tibetan Plateau region and a preparation method thereof. Background technique [0002] With an average altitude of more than 4,000 meters, the Tibet Autonomous Region is the main part of the Qinghai-Tibet Plateau and is known as the "roof of the world". The annual average sunshine hours in Lhasa are about 3005 hours. The atmosphere here is weak, with less water vapor and dust content, and good transparency. When sunlight passes through the atmosphere, energy is lost, so it is the area with the most solar radiation in the country. Tibet is one of the areas with the strongest ultraviolet light in the world. Asphalt is an organic macromolecular material, which is highly susceptible to photo-oxidative aging due to the influence of ultraviolet radiation, which further deteriorates ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L9/06C08L17/00C08K3/26
Inventor 李福建周文婷韩君陶红
Owner JIANGSU BAOLI INT INVESTMENT CO LTD
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