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Modified asphalt composition with excellent low-temperature performance and preparation method of modified asphalt composition

A technology of modified asphalt and low-temperature performance, which is applied in building structure, building insulation materials, building components, etc. It can solve problems such as failure to meet requirements and product low-temperature performance constraints, and achieve excellent low-temperature performance, low-temperature ductility improvement, The effect of high ductility at low temperature

Inactive Publication Date: 2018-06-15
SUZHOU TOPOLINE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the shearing and development process of SBS modified asphalt products, along with the enhancement of product storage stability, the aging and oxidation of products gradually deepen, the low temperature performance of products is severely restricted, and the low temperature performance of SBS modified asphalt often barely meets the specification requirements, some even fall short

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  • Modified asphalt composition with excellent low-temperature performance and preparation method of modified asphalt composition

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preparation example Construction

[0028] The present invention also provides a preparation method of the above-mentioned modified asphalt composition with excellent low-temperature performance, and the preparation method comprises the steps of:

[0029] S1. Heat the base asphalt to 140°C-160°C, add styrene-butadiene-styrene block copolymer resin, styrene-butadiene rubber, and C9 petroleum resin in parts by mass, cut at a low speed for 30min-40min, The speed is 200r / min~500r / min;

[0030] S2. Heating the temperature to 170°C-180°C, adding aromatic oil, plasticizer, polyethylene wax, and phosphoric acid ester in parts by mass, high-speed shearing for 30min-40min, and shearing speed of 5000r / min-8000r / min;

[0031]S3. Add sulfur and antioxidants in parts by mass, shear at a medium speed for 30 minutes to 40 minutes, and the shear speed is 2000r / min to 4000r / min;

[0032] S4. Control the temperature at 150° C. to 160° C., develop through low speed shearing for 1 h to 2 h, and the shearing speed is 200 r / min to 50...

Embodiment 1

[0036] The modified asphalt composition with excellent low-temperature performance in this embodiment includes the following raw material components in parts by mass: 100 parts of base asphalt, 3 parts of SBS, 1 part of SBR, 1 part of aromatic oil, 1 part of plasticizer, 0.8 part of C9 Petroleum resin, 0.5 part of polyethylene wax, 0.2 part of sulfur, 0.2 part of antioxidant, 0.5 part of phosphate ester.

[0037] Heat the base asphalt of the above-mentioned parts to 160°C, add SBS, SBR, C9 petroleum resin and shear at low speed for 30 minutes; heat the temperature to 170°C, add aromatic oil, plasticizer, polyethylene wax, phosphate ester, and shear at high speed 30min, the shear speed is 6000r / min; add sulfur and antioxidant, medium speed shear 30min, the shear speed is 2000r / min; control the temperature at 155℃, low speed shear development 1.5h, the shear speed is 300r / min, complete the development of modified asphalt, and obtain a modified asphalt composition with excellent...

Embodiment 2

[0039] The modified asphalt composition with excellent low-temperature performance in this embodiment includes the following raw material components in parts by mass: 100 parts of base asphalt, 4 parts of SBS, 1.5 parts of SBR, 1.5 parts of aromatic oil, 2 parts of plasticizer, and 1 part of C9 Petroleum resin, 1 part polyethylene wax, 0.3 part sulfur, 0.3 part antioxidant, 1 part phosphate ester.

[0040] Heat the base asphalt of the above-mentioned parts to 160°C, add SBS, SBR, C9 petroleum resin and shear at low speed for 35 minutes; heat the temperature to 180°C, add aromatic oil, plasticizer, polyethylene wax, phosphate ester, and shear at high speed 40min, with a shear rate of 8000r / min; adding sulfur and antioxidants, shearing at a medium speed for 30min, with a shear rate of 4000r / min; controlling the temperature at 160°C, and developing at a low speed for 2 hours, with a shear rate of 300r / min min, the development of modified asphalt is completed, and a modified aspha...

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Abstract

The invention relates to the technical field of road engineering and specifically discloses a modified asphalt composition with excellent low-temperature performance and a preparation method of the modified asphalt composition. The modified asphalt composition is prepared from the following raw material components in parts by mass: 100 parts of matrix asphalt, 2 to 5 parts of styrene-butadiene-styrene block copolymer resin, 0.5 to 2 parts of styrene-butadiene rubber, 0.5 to 2 parts of aromatic oil, 0.5 to 3 parts of plasticizer, 0.5 to 1.5 parts of C9 petroleum resin, 0.5 to 1.5 parts of polyethylene wax, 0.1 to 0.5 parts of sulfur, 0.1 to 0.5 parts of antioxidant and 0.5 to 1.5 parts of phosphate. According to the modified asphalt composition disclosed by the invention, the low-temperature ductility of the modified asphalt is improved by the combination action of the aromatic oil, the plasticizer, the styrene-butadiene rubber and the C9 petroleum resin; the prepared modified asphalt composition with the excellent low-temperature performance has the advantages of excellent low-temperature performance, high low-temperature ductility and suitability for being used in cold regions.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a modified asphalt composition with excellent low-temperature performance and a preparation method thereof. Background technique [0002] With the rapid development of highway construction and the heavy load of driving vehicles, people's demand for polymer modified asphalt is increasing day by day. SBS modified asphalt has excellent high temperature anti-rutting, low temperature anti-cracking, anti-fatigue performance and excellent elastic recovery ability , mainly used in high-grade roads such as the upper and middle layers of expressways, heavy traffic and sections with many overloaded vehicles. Based on the above excellent road performance, SBS modified asphalt has become the mainstream product in modified asphalt. [0003] Low-temperature cracks in asphalt pavement during its service life are a common problem at present, especially in the cold northern regions. Due ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L57/02C08L23/06C08L91/00C08K3/06C08K5/521C08K5/11C08K5/134C08K13/02
CPCC08L95/00C08L2205/035C08L53/02C08L9/06C08L57/02C08L23/06C08L91/00C08K3/06C08K5/521C08K5/11C08K5/1345C08K13/02
Inventor 牛艳辉陈悬
Owner SUZHOU TOPOLINE TECH
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