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Waste rubber powder/styrene-butadiene-styrene (SBS) composite modified asphalt and production process thereof

A technology of composite modified asphalt and production process, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of long process route, prolong production time, expensive and other problems, and achieve the effect of simple production process and low energy consumption

Inactive Publication Date: 2011-09-14
JIANGYIN TAIFU ASPHALTUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The softening point and ductility of ordinary waste rubber-modified asphalt are relatively low. Although it basically meets the industry standard of rubber-modified asphalt, it is different from the "Technical Specifications for Construction of Highway Asphalt Pavement" JTG F40-2004 Polymer Modified Asphalt Standard and Expressway Management The technical requirements of different departments are quite different, and the price of SBS modifier is more expensive than that of waste rubber powder.
The production process of modified asphalt often includes the production of modified masterbatch, and the process route is long, which increases labor and prolongs production time, and increases energy consumption

Method used

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  • Waste rubber powder/styrene-butadiene-styrene (SBS) composite modified asphalt and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The invention is a waste rubber powder / SBS composite modified asphalt, its components include activator 0.3wt‰, penetrant 1wt‰, waste rubber powder 20wt%, SBS 0.2wt%, aromatic oil 2wt%, and the rest is matrix asphalt .

[0020] Among them, the activator is sulfur; the penetrating agent is diesel.

[0021] Wherein, the particle size of the waste rubber powder is 30 meshes, and the content of natural rubber hydrocarbons in the waste rubber powder is 35%.

[0022] Taking the above waste rubber powder / SBS composite modified asphalt as an example, its production process includes the following processing steps:

[0023] Step 1: Heat the base asphalt in the reactor to 180°C to melt;

[0024] The second step: keep warm and stir the base asphalt, add waste rubber powder, penetrant, SBS, aromatic oil, and activator to the above base asphalt at a temperature of 180-185°C to swell, and at the same time start the high-speed shearing machine cycle connected to the reactor Shearing...

Embodiment 2

[0028] The invention is a waste rubber powder / SBS composite modified asphalt, its components include activator 0.3wt‰, penetrant 1wt‰, waste rubber powder 20wt%, SBS 0.3wt%, aromatic oil 2wt%, and the rest is matrix asphalt .

[0029] Among them, the activator is sulfur, and the penetrating agent is diesel.

[0030] Wherein, the particle size of the waste rubber powder is 30 meshes, and the content of natural rubber hydrocarbons in the waste rubber powder is 35%.

[0031] Taking the above waste rubber powder / SBS composite modified asphalt as an example, its production process includes the following processing steps:

[0032] Step 1: Heat the base asphalt in the reactor to 190°C to melt;

[0033] The second step: keep warm and stir the base asphalt, add waste rubber powder, penetrant, SBS, aromatic oil, and activator to the above base asphalt at a temperature of 180-185°C to swell, and at the same time start the high-speed shearing machine cycle connected to the reactor Shea...

Embodiment 3

[0037] The invention is a waste rubber powder / SBS composite modified asphalt, its components include activator 0.3wt‰, penetrant 1wt‰, waste rubber powder 20wt%, SBS 0.4wt%, aromatic oil 2wt%, the rest is base asphalt .

[0038] Wherein, the activator is sulfur, and the penetrating agent is diesel.

[0039] Wherein, the particle size of the waste rubber powder is 30 mesh, and the content of natural rubber hydrocarbons in the waste rubber powder is 35%.

[0040] Taking the above waste rubber powder / SBS composite modified asphalt as an example, its production process includes the following processing steps:

[0041] Step 1: Heat the base asphalt in the reactor to 190°C to melt;

[0042] The second step: keep warm and stir the base asphalt, add waste rubber powder, penetrant, SBS, aromatic oil, and activator to the above base asphalt at a temperature of 180-185°C to swell, and at the same time start the high-speed shearing machine cycle connected to the reactor Shearing, the w...

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Abstract

The invention discloses a waste rubber powder / styrene-butadiene-styrene (SBS) composite modified asphalt and a production process thereof. The waste rubber powder / SBS composite modified asphalt comprises 0.03 weight percent of activating agent, 0.1 weight percent of penetrating agent, 15 to 25 weight percent of waste rubber powder, 0.1 to 0.4 weight percent of SBS, 1 to 4 weight percent of aromatic oil and the balance of base asphalt. The preparation process of the modified asphalt comprises the following steps of: heating and melting the base asphalt at high temperature, adding the penetrating agent, the waste rubber powder, SBS, the aromatic oil and the activating agent into the base asphalt, stirring and swelling, and performing cyclic shear by using a high-speed shearing machine to obtain the waste rubber powder / SBS composite modified asphalt. The waste rubber powder / SBS composite modified asphalt has the characteristics of high softening point, high ductility and the like, and low cost. The production process of the waste rubber powder / SBS composite modified asphalt is simple and reasonable and is low in energy consumption.

Description

technical field [0001] The invention relates to a rubber modified asphalt and a production process thereof, in particular to a waste rubber powder / SBS composite modified asphalt and a production process thereof. Background technique [0002] With the improvement of our people's living standards and the rapid development of the automobile industry, the number of automobiles has increased year by year, and our country is also facing a severe environmental problem - the disposal of a large number of waste tires. One of the commonly used recycling methods for waste tires in the world is to process them into rubber powder and use the waste rubber powder for asphalt modification. This is also internationally recognized as the best way to treat waste rubber in a harmless and resourceful manner. [0003] In recent years, there have been some new technical researches on adding an appropriate amount of waste rubber powder to SBS polymer modified asphalt for compound modification. Chi...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L21/00C08K3/06C08K5/01
Inventor 夏咸明
Owner JIANGYIN TAIFU ASPHALTUM
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