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SBS (styrene-butadiene-styrene) modified asphalt and preparation method thereof

A technology of modified asphalt and its production method, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of easy drying, cracking, softness, poor performance, etc., achieve good elasticity and toughness, improve fatigue resistance, and good The effect of resilience

Inactive Publication Date: 2016-08-10
河南普天交通科技有限公司
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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 provide a kind of SBS modified asphalt and its preparation method, to solve the problem that the asphalt produced by the existing production method has poor performance, is easy to soften in summer, and is easy to dry and crack in winter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of SBS modified bitumen, comprises the base bitumen of 88.6%%, the SBS modifier of 6%, the stabilizer of 0.4% and the aromatic hydrocarbon oil of 5%, described stabilizer is by TMTD accelerator and sulfur powder with 2: 1, the SBS modifier can be thermoplastic styrene-butadiene rubber.

[0027] Its preparation method comprises the following steps:

[0028] Step 1: Transport 88.6% of the base asphalt to a high-temperature tank for heating to 185°C;

[0029] Step 2: Add base asphalt at a temperature of 185°C to the production tank, add 6% SBS modifier at the same time, and stir and mix for 2 hours;

[0030] Step 3, passing the stirred asphalt through a mill to fully dissolve it;

[0031] Step 4: Put the fully dissolved asphalt into the finished product tank, add 0.4% stabilizer and 5% aromatic oil into the finished product tank, stir and mix again and incubate for 1-2 hours to obtain SBS modified asphalt.

Embodiment 2

[0033] A kind of SBS modified asphalt, comprising 94.9% base asphalt, 4-6% SBS modifier, 0.1-0.4% stabilizer and 1%-5% aromatic oil, said stabilizer is made of TMTD accelerator It is configured with sulfur powder at a ratio of 2:1, and the SBS modifier can be thermoplastic styrene-butadiene rubber.

[0034] Its preparation method comprises the following steps:

[0035] Step 1: Transport 94.9% of the base asphalt to a high-temperature tank for heating to 178°C;

[0036] Step 2: Add base asphalt at a temperature of 178°C to the production tank, add 4% SBS modifier at the same time, and stir and mix for 2 hours;

[0037] Step 3, passing the stirred asphalt through a mill to fully dissolve it;

[0038] Step 4: Put the fully dissolved asphalt into the finished product tank, add 0.1% stabilizer and 1% aromatic oil into the finished product tank, stir and incubate for 2 hours again to obtain SBS modified asphalt.

Embodiment 3

[0040] A kind of SBS modified asphalt, including 91.8% of base asphalt, 5% of SBS modifier, 0.2% of stabilizer and 3% of aromatic oil, said stabilizer is made of TMTD accelerator and sulfur powder at a ratio of 2:1 The ratio is configured, and the SBS modifier can be thermoplastic styrene-butadiene rubber.

[0041] Its preparation method comprises the following steps:

[0042] Step 1, transport 91.8%% of the base asphalt to a high-temperature tank for heating, and heat it to 180°C;

[0043] Step 2: Add base asphalt at a temperature of 180°C to the production tank, add 5% SBS modifier at the same time, and stir and mix for 1.5 hours;

[0044] Step 3, passing the stirred asphalt through a mill to fully dissolve it;

[0045] Step 4: Put the fully dissolved asphalt into the finished product tank, add 0.2% stabilizer and 3% aromatic oil into the finished product tank, stir and mix again and incubate for 1.5 hours to obtain SBS modified asphalt.

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PUM

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Abstract

The invention discloses asphalt and in particular relates to SBS (styrene-butadiene-styrene) modified asphalt and a preparation method thereof. The SBS modified asphalt comprises 88.6-94.9% of matrix asphalt, 4-6% of SBS modifier, 0.1-0.4% of stabilizer and 1-5% of aromatic hydrocarbon oil, wherein the stabilizer is prepared from an accelerant TMTD and sulfur powder. The asphalt has good high and low temperature resistance in regions with larger temperature difference, better rut resistance and good elasticity and toughness, has the effect of improving the fatigue resistance of the pavement, has good strain capacity especially on severely overloaded high flow highways and can conduce to reducing permanent deformation of the pavement.

Description

technical field [0001] The invention relates to an asphalt, in particular to an SBS modified asphalt and a preparation method thereof. Background technique [0002] In civil engineering, asphalt is a widely used waterproof material and anti-corrosion material. It is mainly used in the waterproofing of roofs, grounds and underground structures, and the anti-corrosion of wood and steel. Asphalt is also widely used as cementing material for pavement structure in road engineering. It can be used in proportion to build asphalt pavement with different structures after it is mixed with mineral materials of different compositions. It is widely used in expressways. [0003] The existing asphalt production process is relatively simple, and there are defects such as poor performance, easy to soften in summer, and easy to dry and crack in winter. [0004] Base bitumen is bitumen extracted from petroleum or coal. The existing base asphalt material has poor temperature stability and is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L91/00C08K5/40C08K3/06
CPCC08L95/00C08L2201/08C08L2205/03C08L53/02C08L91/00C08K5/40C08K3/06
Inventor 张海龙
Owner 河南普天交通科技有限公司
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