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Low-temperature-resistant modified asphalt and preparation method thereof

A modified asphalt, low temperature resistant technology, used in building insulation materials, building components, buildings, etc., can solve problems such as reduced pavement performance, achieve good penetration and ductility, low critical cracking temperature, and good low temperature performance. Effect

Inactive Publication Date: 2016-03-23
NINGBO BINHAI PETROCHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Low-temperature cracks in asphalt pavement during its service life are a common problem at present. Due to the existence of cracks, the performance of the pavement is reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The low temperature resistant modified asphalt of the present embodiment comprises the following components in parts by mass: 100 parts of base asphalt, 15 parts of SBS, 12 parts of bentonite, 11 parts of epoxy octyl stearate, 4 parts of chlorinated polyethylene, 3 parts of ethylene - Vinyl acetate copolymer, 1 part aromatic oil, 2 parts stabilizer. Among them, SBS is a granular material with a particle size of 2 μm, the particle size of bentonite is 4 μm, and the stabilizer is a mixture of maleic anhydride grafted polyethylene, sulfur and calcium chloride.

Embodiment 2

[0027] The low temperature resistant modified asphalt of the present embodiment comprises the following components in parts by mass: 100 parts of base asphalt, 17 parts of SBS, 11 parts of bentonite, 10 parts of epoxy octyl stearate, 5 parts of chlorinated polyethylene, 3 parts of ethylene - Copolymer of vinyl acetate, 2 parts aromatic oil, 3 parts stabilizer. Among them, SBS is a granular material with a particle size of 10 μm, the particle size of bentonite is 1 μm, and the stabilizer is a mixture of maleic anhydride grafted polyethylene, sulfur and calcium chloride.

Embodiment 3

[0029] The low temperature resistant modified asphalt of the present embodiment comprises the following components in parts by mass: 100 parts of base asphalt, 20 parts of SBS, 16 parts of bentonite, 8 parts of epoxy octyl stearate, 4 parts of chlorinated polyethylene, 1 part of ethylene - Copolymer of vinyl acetate, 3 parts aromatic oil, 2 parts stabilizer. Among them, SBS is a granular material with a particle size of 8 μm, the particle size of bentonite is 10 μm, and the stabilizer is a mixture of maleic anhydride grafted polyethylene, sulfur and calcium chloride.

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Abstract

The invention discloses low-temperature-resistant modified asphalt. The low-temperature-resistant modified asphalt is prepared from, by mass, 100 parts of matrix asphalt, 15-30 parts of SBS, 11-16 parts of bentonite, 8-12 parts of epoxy ethylhexyl stearate, 4-6 parts of chlorinated polyethylene, 1-3 parts of ethylene-vinyl acetate copolymer, 1-5 parts of aromatic hydrocarbon oil and 2-5 parts of stabilizer. The low-temperature-resistant modified asphalt has good low temperature resistance, good needle penetration and ductility are still achieved under the low temperature condition, the critical cracking temperature is low, the low-temperature-resistant modified asphalt is applicable to the cold environment in Northern China, the preparation method is simple and easy to implement, and large-scale production can be conducted.

Description

technical field [0001] The invention relates to the technical field of asphalt modification, in particular to a low-temperature-resistant modified asphalt and a preparation method thereof. Background technique [0002] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of high-viscosity organic liquid. It is liquid with a black surface and is soluble in carbon disulfide. Asphalt is a waterproof, moisture-proof and anti-corrosion organic gelling material. Pitch can be mainly divided into three types: coal tar pitch, petroleum pitch and natural pitch. Among them, coal tar pitch is a by-product of coking. Petroleum asphalt is the residue after distillation of crude oil. Natural bitumen is stored underground, and some form ore layers or accumulate on the surface of the earth's crust. Asphalt is mainly used in coatings, plastics, rubber and other industries as well as paving roads. ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L23/28C08L23/08C08L91/00C08L51/06C08K13/02C08K3/34C08K5/1515C08K3/06C08K3/16
Inventor 卓利国徐志裕
Owner NINGBO BINHAI PETROCHEM CO LTD
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