Preparation method of SBS asphalt stabilizer

A stabilizer and asphalt technology, applied in the field of asphalt additives, can solve the problems of easy segregation and performance degradation of modified asphalt, and achieve the effects of improving storage stability, improving performance and flexibility.

Inactive Publication Date: 2017-04-26
SUZHOU YUXI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of SBS asphalt stabilizer, and the prepared SBS asphalt stabilizer can avoid the problems of segregation and performance attenuation in existing modified asphalt during thermal storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Grind the calcium carbonate and sieve it to less than 0.1 μm to obtain calcium carbonate powder; add 100 g of calcium carbonate powder and 10 g of butyl titanate into 800 mL of absolute ethanol solvent to disperse evenly; heat in a water bath to 45 °C , reflux reaction for 60 minutes, centrifuged, and the resulting solid was dried in a vacuum oven to obtain active calcium carbonate;

[0027] 2) Weigh 25 parts of sulfur powder, 16 parts of SBS, 12 parts of styrene-butadiene rubber, 1.5 parts of stearylamine polyoxyethylene ether, 1.5 parts of stearyl trimethylammonium chloride, 7 parts of polyethylene resin, and nanometer zinc oxide Put 4 parts into the grinder, heat to 130°C, shear and grind to mix evenly, continue to add 45 parts of active calcium carbonate and 1.5 parts of polyoxyethylene nonylphenyl ether prepared in step 1), heat up to 185°C, shear and grind Mix evenly, extrude and granulate through a twin-screw extruder, and cut into pellets through a pelletizer...

Embodiment 2

[0029] 1) Grind the calcium carbonate and sieve it to less than 0.1 μm to obtain calcium carbonate powder; add 100 g of calcium carbonate powder and 10 g of butyl titanate into 500 mL of absolute ethanol solvent to disperse evenly; heat in a water bath to 40 °C , reflux reaction for 90min, centrifuged, and the obtained solid was dried in a vacuum oven to obtain active calcium carbonate;

[0030] 2) Weigh 35 parts of sulfur powder, 18 parts of SBS, 18 parts of styrene-butadiene rubber, 2.5 parts of stearylamine polyoxyethylene ether, 2.5 parts of stearyl trimethylammonium chloride, 9 parts of polyethylene resin, and nanometer zinc oxide Put 5 parts into the grinder, heat to 120°C, shear and grind to mix evenly, continue to add 55 parts of active calcium carbonate and 2.5 parts of polyoxyethylene nonylphenyl ether prepared in step 1), heat up to 180°C, shear and grind Mix evenly, extrude and granulate through a twin-screw extruder, and cut into pellets through a pelletizer to ob...

Embodiment 3

[0032] 1) Grind the calcium carbonate and sieve it to less than 0.1 μm to obtain calcium carbonate powder; add 100 g of calcium carbonate powder and 10 g of butyl titanate into 1000 mL of absolute ethanol solvent to disperse evenly; heat in a water bath to 50 °C , reflux reaction for 45min, centrifuged, and the resulting solid was dried in a vacuum oven to obtain active calcium carbonate;

[0033] 2) Weigh 30 parts of sulfur powder, 17 parts of SBS, 15 parts of styrene-butadiene rubber, 2 parts of stearylamine polyoxyethylene ether, 2 parts of stearyl trimethylammonium chloride, 8 parts of polyethylene resin, and nano-zinc oxide Put 4.5 parts into the grinder, heat to 150°C, shear and grind to mix evenly, continue to add 50 parts of active calcium carbonate and 2 parts of polyoxyethylene nonylphenyl ether prepared in step 1), heat up to 190°C, shear and grind Mix evenly, extrude and granulate through a twin-screw extruder, and cut into pellets through a pelletizer to obtain th...

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PUM

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Abstract

The invention belongs to the technical field of asphalt modifiers and relates to a preparation method of a SBS asphalt stabilizer. The method comprises 1) preparation of activated calcium carbonate, and 2) preparation of the SBS asphalt stabilizer. The preparation method is simple, reduces a production cost and reduces labor intensity. The raw materials are used in a proportion to form a network structure of asphalt and SBS so that the storage stability between asphalt and SBS is improved and SBS-modified asphalt use performances are improved. In addition, through butyl titanate, the activated calcium carbonate in the SBS asphalt stabilizer is subjected to surface treatment so that the dispersibility and compatibility of the SBS asphalt stabilizer in the SBS-modified asphalt are improved.

Description

technical field [0001] The invention belongs to the technical field of asphalt additives, in particular to a preparation method of SBS asphalt stabilizer. Background technique [0002] With the continuous development of the transportation industry in various countries, the requirements for the road surface are continuously improved, and the quality requirements for the asphalt used for paving the road surface are also continuously increased. Due to its components, the current asphalt cannot meet the needs of the growing road pavement due to its high temperature stability, water stability and skid resistance. [0003] In order to solve these problems, some modified asphalts continue to emerge, but although the existing modified asphalts have some performance improvements, their stability still cannot meet the needs of high-demand road surfaces. For SBS modified asphalt, due to the large physical difference between asphalt and modifiers, traditional SBS modified asphalt is to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L71/02C08L23/06C08K13/06C08K9/04C08K3/26C08K3/06C08K5/19C08K3/22
CPCC08L95/00C08K2201/011C08L9/06C08L53/02C08L2201/08C08L2205/025C08L2205/035C08L71/02C08L23/06C08K13/06C08K9/04C08K2003/265C08K3/06C08K5/19C08K2003/2296
Inventor 杨阳
Owner SUZHOU YUXI NEW MATERIAL TECH
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