SBS-modified asphalt produced by straight-run pitch of Patos crude oil and preparation method

A technology of straight-run asphalt and modified asphalt, which is applied in building components, building insulation materials, buildings, etc. It can solve the problems that it is difficult to meet the market demand for modified asphalt, and meet the needs of long-distance transportation, excellent low-temperature performance, and good storage The effect of stability

Inactive Publication Date: 2017-05-31
FOSHAN GAOFU PETROCHINA FUEL ASPHALT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the use of furfural to extract oil can improve the ductility of modified asphalt, the researchers found that the ductility index of the modified asphalt can only reach 23-26 cm during the above process, which is difficult to meet the requirements of some customers in South China. High market demand for permanent asphalt product indicators

Method used

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Embodiment Construction

[0023] Preferred embodiments of the present invention are described below, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0024] A kind of Patos crude oil straight-run bitumen described in the present invention produces SBS modified asphalt, its batching: SBS modified asphalt comprises matrix asphalt and additive, comprises SBS modification, extracted oil, compatibilizer, solubilizer in the described additive , anti-aging agent and stabilizer, the base bitumen is directly distilled by Patos crude oil often decompression unit.

[0025] Production process: Deep-draw Patos crude oil through a distillation device to obtain matrix bitumen with a penetration of 45-55 (0.1mm). Then add additives for modification, wherein the SBS modifier in the additive accounts for 4% of the asphalt weight, the compatibilizer accounts for 2% of the asphalt ...

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Abstract

The invention discloses SBS-modified asphalt produced by straight-run pitch of Patos crude oil and a preparation method of the SBS-modified asphalt. The SBS-modified asphalt comprises matrix asphalt and an additive, wherein the additive contains an SBS modifier, extract oil, a compatilizer, a solubilizer, an anti-aging agent and a stabilizer; the matrix asphalt is obtained through straight-run distillation of Patos crude oil. The SBS-modified asphalt has a relatively softening point under the action of the additive, and has excellent low-temperature performance, the softening point is improved to over 75 DEG C and the ductility at 5 DEG C is greater than 30cm. In addition, the SBS modifier also has good storage stability and meets long-distance transportation requirements.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt, and in particular relates to the production of SBS modified asphalt from Patos crude oil straight-run asphalt and a preparation method thereof. Background technique [0002] Asphalt modification is a physical blending process. After the modifier polymer is added to the asphalt, it forms an elastic grid structure in the asphalt through swelling and adsorption. This grid structure has ideal elasticity, plasticity and extensibility, which improves the performance of asphalt comprehensively. The application of styrene-butadiene-styrene block copolymer (SBS) in asphalt modification has been mature. In terms of the structure of SBS modifiers, SBS modifiers are divided into two types: linear and star. [0003] The modification effect of asphalt is closely related to the chemical composition of base asphalt. Different compatibility process schemes should be selected for different base asphalts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K3/04
CPCC08L95/00C08L2201/08C08L2205/035C08L53/02C08K3/04
Inventor 李海明郭立森金杰陈新志叶伟新
Owner FOSHAN GAOFU PETROCHINA FUEL ASPHALT
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