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SBS modified asphalt stabilizer and preparation method thereof

A technology of modified asphalt and stabilizer, used in building components, building insulation materials, buildings, etc., can solve the problems of uneven dispersion, slow cross-linking speed, easy segregation of asphalt, etc., and achieve uniform dispersion, cross-linking speed block, Promotes even mixing

Active Publication Date: 2013-04-03
XIAN ZHONGLI ASPHALT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a kind of SBS modified asphalt stabilizer, the purpose is to solve the problem that SBS and matrix asphalt are easy to segregate and store unstable in the production process of SBS polymer modified asphalt, and other stabilizers are used During the crosslinking process, the crosslinking speed is slow, the dispersion is uneven, and the problem of agglomeration occurs

Method used

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  • SBS modified asphalt stabilizer and preparation method thereof
  • SBS modified asphalt stabilizer and preparation method thereof
  • SBS modified asphalt stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 0.8 grams of sulfur powder with a particle size of 100 mesh to 200 mesh into the high-speed disperser, add 0.2 grams of aromatic heterocyclic multifunctional olefin monomers, and the heterocyclic multifunctional olefin monomers are divinylbenzene and trimethylolpropane Trimethacrylate, diallyl phthalate, diol dimethacrylate or triallyl isocyanurate, stir for 30 minutes to mix the two evenly, then add to the grinder, grind for 30 minutes, Pass through a 100-mesh sieve, then add the premix to 100g of rubber oil, aromatic oil or furfural oil at 100°C, and start shearing for 15 minutes to obtain the SBS modified asphalt stabilizer product.

Embodiment 2

[0020] Add 0.7 grams of sulfur into the mixer, add 0.3 grams of divinylbenzene or trimethylolpropane trimethacrylate, stir for 15 minutes, mix the two evenly, then add them to the grinder, grind for 15 minutes, and pass through a 100-mesh sieve , and then add the premixture to 100g, 100°C aromatic oil, and start shearing for 15 minutes to obtain the SBS modified asphalt stabilizer product.

[0021] During the crosslinking process, the stabilizing agent of this embodiment has fast crosslinking speed, uniform dispersion and no agglomeration.

Embodiment 3

[0023] The SBS modified asphalt stabilizer of the present invention is prepared from the following raw materials in parts by weight: 1 gram of sulfur, 0.5 gram of diallyl phthalate or divinylbenzene, and 99 grams of rubber oil. Its preparation method is with embodiment 1.

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Abstract

The invention discloses a stabilizer, in particular to a stabilizer used for SBS modified asphalt and a preparation method thereof; the stabilizer is prepared from the following raw materials according to the parts by weight: 0.5-5 parts of sulfur, 0.2-5 parts of aromatic heterocyclic multifunctional olefin monomers and 90-100 parts of aromatic heavy oils. The invention adopts sulfur as main reactant and aromatic heavy oils as dispersant; the reactant and the reaction promoter can be dissolved in the dispersant to promote the uniform mixing between the reactant and a reaction promoter, increase the uniformity of the reaction of the stabilizer and substrate asphalt and avoid the agglomerate phenomenon caused by locally over crosslinking; the heterocyclic multifunctional olefin monomers areused as the reaction promoter so as to increase the reaction efficiency of the main reactant and the crosslink rate. The invention solves the problems well that SBS is easy to separate from the substrate asphalt and the storage is not stable in the production process of SBS polymer modified asphalt.

Description

technical field [0001] The invention relates to a stabilizer, in particular to a stabilizer for improving the stability of SBS modified asphalt and a preparation method thereof. Background technique [0002] With the development of modern transportation, the requirements for road pavement are getting higher and higher, and the high temperature stability, low temperature crack resistance, low temperature deformation ability, low temperature ductility, cohesive adhesion, water stability, The skid resistance puts forward higher requirements, but the quality and quality of traditional base asphalt have been difficult to meet these requirements. [0003] It has been 130 years since the rubber-modified asphalt was first published in Britain in 1873. During these 130 years, various modifiers and their modified asphalt products have sprung up and developed rapidly. Among them, styrene butadiene block copolymer (SBS) stands out for its good high and low temperature road performance,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K3/06C08K5/01C08K5/103C08K5/12C08K5/3492C08L95/00
Inventor 郭建民徐培华张晓宏张文军
Owner XIAN ZHONGLI ASPHALT CO LTD
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