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High viscosity asphalt modifier and preparation method thereof

A high-viscosity asphalt and modifier technology, applied in the field of asphalt modifiers, can solve the problems of increasing elastomer decomposition, dissolution, poor dispersion of elastomers, poor dispersion, etc., to improve high temperature performance and adhesion performance, and improve dissolution with disintegrating effects

Inactive Publication Date: 2009-06-17
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] According to the analysis, the existing technologies have not yet fully solved the problems of poor dispersion and difficult dissolution of elastomers in asphalt. On the one hand, these technologies mainly use SBS, an elastomer that is poorly dispersed with asphalt and difficult to dissolve; in addition The petroleum resin used is also relatively viscous, which also increases the difficulty of the decomposition and dissolution of the elastomer in asphalt; finally, no other substances that degrade the viscosity of the system are added to improve the dissolution and decomposition effect of the entire system in asphalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5 and comparative example 1—4

[0021] Prepare the high-viscosity asphalt modifier according to the formula of Table 1 parts by weight:

[0022] Source of raw materials:

[0023] SIS: produced by Kraton, model Kraton D-1161, product specifications are as follows:

[0024] specification D-1161 proportion 0.92 Melt index (a) g / 10min 12 hardness ShoeA 37 300% modulus psi 130 Tensile Strength psi 3100 Elongation ％ 1300

[0025] Solution viscosity (b) cps 1200 Oil content ％ 0 Styrene content ％ 15 Diblock content ％ 19

[0026] Coumarone resin: produced by Henan Anyang Jinmaoxiang Company, with a softening point of 100℃

[0027] Oleamide: produced by Jiangxi Weike Grease Chemical Co., Ltd. The main indicators are as follows:

[0028] Acid value

mgKOH / g Melting point

℃ Iodine value

gl2 / 100g Chroma

Hazen 0.5 74 82-88 50

[0029] SBS: produced by South Korea's LG company, the model is LG-501...

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Abstract

The invention discloses a high-viscosity asphalt modifier and preparation thereof, wherein, the mass proportion of the material composition and components of the high-viscosity asphalt modifier refers to that 100 proportion of SIS, 60-100 proportion of coumarone resin and 40-60 proportion of oleamide. The high-viscosity asphalt modifier of the invention modifies basic asphalt and has excellent dispersion and solubility, and moreover, modified asphalt being correspondingly prepared has better adhesion and high temperature property.

Description

Technical field [0001] The invention relates to an asphalt modifier, in particular to a high-viscosity asphalt modifier. Background technique [0002] High-viscosity asphalt is mainly made by adding polymer modification to petroleum asphalt. Adding polymer to modify petroleum asphalt can significantly improve the high and low temperature performance of asphalt, and improve the high temperature anti-rutting and low temperature anti-cracking ability of asphalt pavement. However, due to differences in molecular weight and viscosity between polymer and asphalt, it is difficult to disperse polymer-modified asphalt; in addition, because of the presence of styrene in the elastomer, it is difficult to dissolve in the asphalt, and the polymer is difficult to disperse in the asphalt. And dissolving, resulting in poor modification effect of polymer on asphalt, which affects the performance of modified asphalt. [0003] In order to solve the problems of difficult dispersion and poor solubili...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L45/02C08K5/20C08L95/00B29B9/00B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/92895
Inventor 黄卫东孙立军
Owner TONGJI UNIV
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