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Method for preparing SBS (styrene-butadiene-styrene block copolymer) modified asphalt additive

A technology for modifying asphalt and additives, applied in the field of asphalt additives, can solve problems such as not being overcome, and achieve the effects of increasing adhesion, improving storage stability, and unique raw materials

Active Publication Date: 2014-06-25
宁夏公路桥梁建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far there is no way to overcome the above drawbacks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: The method for the making of SBS modified asphalt additive, this method is first adopts Raymond mill to grind each raw material to the fineness of 350-400 mesh, the finer the finer the better the modifier is in the asphalt Better dispersion, full chemical reaction with asphalt and modifier, and then use a spiral mixer to mix the raw materials according to: 70% of sulfur powder, 25% of carbon black, and 5% of natural soap powder to obtain SBS. Modified asphalt stabilizer.

Embodiment 2

[0018] Embodiment 2: The method for making SBS modified asphalt additive, this method is first adopting Raymond mill to grind each raw material to a fineness of 350-400 mesh, the finer the finer the better the modifier is in the asphalt Better dispersion, full chemical reaction with asphalt and modifier, and then use a spiral mixer to mix the raw materials according to: 60% sulfur powder, 30% carbon black, 10% stearic acid, and mix them together to obtain SBS Modified asphalt stabilizer.

Embodiment 3

[0019] Embodiment 3: The method for making SBS modified asphalt additive, this method is first adopting Raymond mill to grind each raw material to a fineness of 350-400 mesh, the finer the finer the better the modifier is in the asphalt Better dispersion, full chemical reaction with asphalt and modifier, and then use a spiral mixer to mix the raw materials according to: 70% sulfur powder, 15% carbon black, and 15% sodium dodecylbenzenesulfonate. Mixed together to obtain SBS modified asphalt stabilizer.

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Abstract

The invention relates to an asphalt additive and in particular relates to a method for preparing an SBS (styrene-butadiene-styrene block copolymer) modified asphalt additive. The method is characterized by firstly milling all the raw materials until the fineness is 350-400 meshes by adopting a Raymond mill, and then uniformly blending the raw materials together by adopting a screw blender according to the proportion of the formula, thus obtaining an SBS modified asphalt stabilizer, wherein the weight percents of the raw materials including sulfur powder, carbon black and a surfactant are respectively 60-80%, 15-30% and 5-15%. The method has the beneficial effects that the raw materials are unique; the storage stability of modified asphalt can be greatly improved, the related indexes of modified asphalt can be improved, the softening point can be increased, the temperature sensitivity and the adhesion of asphalt and stones can be improved, and the pavement performance of SBS modified asphalt can be substantially improved.

Description

technical field [0001] The invention relates to an asphalt additive, in particular to a method for making an SBS modified asphalt additive. Background technique [0002] With the development of the economy and the increase of heavy-duty traffic, the asphalt pavement must have the superior performance of high strength, durability, less rutting, and late cracking. However, domestic asphalt has high wax content, low ductility, poor adhesion to stone, and high temperature sensitivity, which makes it difficult for the service life of asphalt pavement to meet the design goals and use requirements. At present, the difficulty in the processing technology of SBS modified asphalt lies in the long-term storage stability. Poor stability is prone to segregation, which leads to the attenuation of related indicators of modified asphalt. The key to the storage stability of SBS modified asphalt lies in the additives of the modified asphalt. SBS modified asphalt is proportional to the base...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08K3/06C08K3/04C08K5/09C08K5/42
Inventor 鲍学员刘中元马延安沈建成张志涛王海军冯欲晓武良缮徐迪马壮曹炜王建华
Owner 宁夏公路桥梁建设有限公司
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