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SBS-modified asphalt stabilizing agent

A technology of modified asphalt and stabilizer, which is applied in building components, building insulation materials, buildings, etc. It can solve the problems of large addition amount and ineffective effect of SBS modified asphalt, so as to promote dispersion, improve thermal storage stability, Guaranteed quality effect

Inactive Publication Date: 2016-07-06
WUXI HUATONG ASPHALT NEW TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to overcome the defects of existing asphalt stabilizers that the effect on SBS modified asphalt is not obvious, and the addition amount is relatively large, and provide a kind of SBS modified asphalt stabilizer

Method used

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  • SBS-modified asphalt stabilizing agent
  • SBS-modified asphalt stabilizing agent
  • SBS-modified asphalt stabilizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of SBS modified asphalt stabilizer, comprises each component of following parts by weight:

[0022]

[0023] Mix Yueyang 791SBS with SK70# base asphalt, grind it under the action of a shear colloid mill, add 0.40% of the SBS modified asphalt stabilizer of this example, and stir at 175°C for 2 hours; the results are shown in Table 1

[0024] The use effect of table 1 embodiment 1

[0025]

[0026]

Embodiment 2

[0028] A kind of SBS modified asphalt stabilizer, comprises each component of following parts by weight:

[0029]

[0030] Mix Yueyang 791SBS with SK70# base asphalt, grind it under the action of a shear colloid mill, add 0.2% of the SBS modified asphalt stabilizer of this example, and stir at 185°C for 1.5 hours; the results are shown in Table 2

[0031] The use effect of table 2 embodiment 2

[0032]

[0033]

Embodiment 3

[0035] A kind of SBS modified asphalt stabilizer, comprises each component of following parts by weight:

[0036]

[0037] Mix Yueyang 791SBS with SK70# base asphalt, grind it under the action of a shear colloid mill, add 0.3% of the SBS modified asphalt stabilizer of this example, and stir at 180°C for 1.8 hours; the results are shown in Table 3

[0038] The use effect of table 3 embodiment 3

[0039]

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Abstract

The invention discloses an SBS-modified asphalt stabilizing agent.The SBS-modified asphalt stabilizing agent is prepared from, by weight, 20-30 parts of a vulcanization accelerator TMTD, 10-15 parts of stearic acid 1801, 10-20 parts of an antioxidant 2246, 20-30 parts of sulphur, 10-15 parts of a heat stabilizer and 10-15 parts of a light stabilizer.After SBS and asphalt are mixed and milled under the action of a shear colloid mill, the SBS-modified asphalt stabilizing agent is added, and stirring is performed for 1.5-2 hours at the temperature of 175 DEG C-185 DEG C.The SBS-modified asphalt stabilizing agent can promote compatibility of the SBS and the asphalt substrate and decrease the adding dosage of the SBS, can improve the heat storage stability of the SBS-modified asphalt to prevent separation from occurring and can increase the content of aromatic ingredients and increase the compatibility rate of the asphalt substrate and the SBS.

Description

technical field [0001] The invention relates to a modified asphalt additive, in particular to a SBS modified asphalt stabilizer. Background technique [0002] With the development of my country's highway transportation, especially the rapid development of high-grade highways, the number of asphalt pavements is increasing and the grade is constantly improving. Judging from the use of expressways at home and abroad, SBS modified asphalt is generally used to auxiliary pavement. SBS (this ethylene-butadiene-styrene block copolymer) is a high molecular polymer, which has both rubber It has high elasticity and has the thermoplastic properties of resin. Under the action of high-speed shear colloid mill, SBS and asphalt can be mixed in asphalt evenly with micron particle size through physical mosaic mixing and mutual infiltration and adsorption, which becomes a kind of modified asphalt. [0003] Since SBS and asphalt are a physical reaction process, the modified asphalt finished t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K13/02C08K5/09C08K3/06
CPCC08K3/06C08K5/09C08K13/02C08L95/00C08L2201/08C08L53/02
Inventor 黄裕沪
Owner WUXI HUATONG ASPHALT NEW TECH DEV
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