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SBS (Styrene-Butadiene-Styrene) modified asphalt and production method thereof

A technology of modified asphalt and production method, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problem of high processing cost, achieve the effect of shortening modification time, reducing production cost, and high elongation

Inactive Publication Date: 2011-02-02
XUZHOU CITY LUXING HIGHWAY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the disadvantage of high processing cost when using linear SBS modifier to process asphalt meeting the requirements of I-C grades in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Heat 5kg of No. 70 matrix asphalt to make its actual temperature reach the processing permit temperature of 175-185°C, and add it to No. 1 mixing tank;

[0019] (2) When adding asphalt to cover the bottom of the tank, add 200g of linear SBS modifier at the same time, and stir, and the stirring temperature is maintained at 175-185°C;

[0020] (3) After the mixing is complete, send the homogeneously mixed asphalt obtained in step (2) into the colloid mill through the glue through the pipeline, and at the same time continuously pump into the colloid mill to pump Kunlun brand KA80 type petroleum (aromatic rubber oil) 100g and 8g of sulfur powder, after grinding, pump them continuously into the No. 2 mixing tank; after the asphalt in the No. 1 mixing tank completely enters the No. 2 mixing tank, the modified asphalt in the No. In the storage tank, the SBS modified asphalt is obtained; during the grinding process, the No. 2 mixing tank continues to stir until the asphalt ...

Embodiment 2

[0022] (1) Heat 20kg of No. 70 matrix asphalt in the No. 1 mixing tank, so that its actual temperature reaches the processing license temperature of 175-185 ° C, and add it to the No. 1 mixing tank;

[0023] (2) When the amount of asphalt added is half of the total amount, add 720g of linear SBS modifier at the same time, and stir, and the stirring temperature is maintained at 175-185°C;

[0024] (3) After the stirring is complete, the uniformly mixed asphalt obtained in step (2) is sent into the colloid mill through the pipeline, and at the same time, the Kunlun brand KN4006 type petroleum (naphthenic rubber oil) 600g and sulfur are continuously pumped into the colloid mill 36g of powder, after grinding, pump it continuously into the No. 2 mixing tank; after the asphalt in the No. 1 mixing tank completely enters the No. 2 mixing tank, the modified asphalt in the No. 2 mixing tank is ground again by a colloid mill and then pumped into the storage tank , to obtain SBS modified ...

Embodiment 3

[0026] The SBS modified asphalt that embodiment 2 produces is detected, and each index is as follows:

[0027] Penetration (25°C, 100g, 5s): 75~61 (0.1mm); Penetration Index PI: -0.39; Ductility (5°C, 5cm / min): 38cm; Softening point: 84~61.5°C; Dynamic viscosity (60°C): >13000Pa·s; kinematic viscosity (135°C): 2.050Pa·s; flash point: 351°C; solubility: 99.74%; elastic recovery (25°C): 94%; storage stability segregation, 48h softening point difference: 0.2°C;

[0028] Residue after RTFOT: mass change 0.06%; ductility (5°C) 21 cm.

[0029] It can be seen from the various quality indicators obtained by testing that the modified asphalt prepared by the production method of SBS modified asphalt of the present invention can fully meet the requirements of I-C grades.

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Abstract

The invention discloses SBS (Styrene-Butadiene-Styrene) modified asphalt and a production method thereof. The SBS modified asphalt mainly comprises the components of matrix asphalt No.70, linear SBS, a solubilizer and a stabilizer, wherein the linear SBS accounts for 3.6% to 4.2% be weight of the of matrix asphalt No.70, the solubilizer accounts for 2.0% to 3.0% by weight of the matrix asphalt No.70, and the stabilizer accounts for 0.16-0.18% be weight of the matrix asphalt No.70. The production method of the SBS modified asphalt comprises the following steps of: (1) heating the matrix asphalt No.70 to 175 DEG C to 185 DEG C; (2) adding the linear SBS and uniformly stirring; and (3) adding the solubilizer and the stabilizer and thoroughly grinding twice by using a colloid mill to obtain the SBS modified asphalt. The production method adopted in the invention effectively shortens the modified time and is low in production cost.

Description

technical field [0001] The invention specifically relates to a SBS modified asphalt and a production method thereof. Background technique [0002] Modified asphalt refers to the asphalt mixture made by adding modifiers to asphalt, or taking measures such as oxidizing asphalt to improve the road performance of asphalt. Compared with ordinary asphalt, modified asphalt has good anti-rutting performance, strong cold resistance, good strain capacity under heavy load and high-frequency traffic flow, strong water stability and anti-radiation aging ability, and can reduce the Damage to road surfaces caused by vehicles leaking diesel, oil and gasoline. The pavement paved with the modified asphalt mixture will not produce brittle cracks in winter and will not soften in summer, with improved fatigue resistance and extended service life. [0003] Polymers used for road modification are generally divided into the following three categories: rubbers, resins and thermoplastic rubbers. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K5/01C08L53/02C08K3/06
Inventor 魏廷赵侯宜合乔鹏吴彪
Owner XUZHOU CITY LUXING HIGHWAY ENG
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