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Environment-friendly rubber asphalt with stable storage performance and preparation method of rubber asphalt

A rubberized asphalt, environmentally friendly technology, used in building insulation materials, building components, buildings, etc., can solve problems such as poor safety, high temperature, waste of production energy, etc.

Inactive Publication Date: 2021-04-30
江苏亿虎沥青材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the temperature in the production process of this rubber asphalt is too high, the operation is complicated, and the safety is poor, which wastes production energy, that is, the production process is not environmentally friendly.

Method used

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  • Environment-friendly rubber asphalt with stable storage performance and preparation method of rubber asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment is to prepare a kind of environment-friendly rubber asphalt with stable storage performance, and the specific operations are as follows:

[0038] Preheat Korean GS70# road petroleum asphalt to 120°C, then quickly exchange heat to 160°C through a heat exchanger, and pump it into the workshop reaction kettle; when the pumped Korean GS70# road petroleum asphalt reaches 3000kg, start stirring, At the same time, 300kg of rubber powder with a particle size of 60 meshes is added through the feeder; after the road petroleum asphalt is pumped into 7000kg, stop adding asphalt, and after all the rubber powder is added, keep the temperature of the asphalt at 140-150°C, at 1000-1200rpm After stirring at a stirring speed for 0.5-1 hour, continue to place it in the reaction kettle for 4 hours, and keep the temperature at 140-150°C.

[0039] Then add 50kg of Yanhua 1401SBS. The SBS was homogenized and emulsified by two German SIEFER colloid mills before adding. The gap ...

Embodiment 2

[0042] This embodiment is also to prepare a kind of environment-friendly rubber asphalt with stable storage performance, and the specific operation is consistent with embodiment 1:

[0043] Weigh 700g of Korean Ssangyong 70# road petroleum asphalt, heat it to 140°C, slowly add 300g of rubber powder with a particle size of 40 mesh, turn on frequency conversion stirring, control the stirring rate at 1200rpm, keep the temperature of the asphalt at 140-150°C, and stir for 0.5 After ~h, place it in an electric blast oven at 160°C for 4~6h. Then, add 5g of Dushanzi T161B SBS, and use an experimental emulsification shear disperser at a shear rate of 4000-5500rpm to shear and disperse for 0.5-1h. Finally, add 1.0 g of sulfur flakes, and stir for 2 hours at 140-160° C. at a stirring rate of 1,000 rpm to obtain finished rubber asphalt, which is set aside.

Embodiment 3

[0045] This embodiment is also to prepare a kind of environment-friendly rubber asphalt with stable storage performance, and the specific operation is also consistent with embodiment 1:

[0046] First weigh 720g of Korean SK70# road petroleum asphalt, heat it to 150°C, slowly add 280g of rubber powder with a particle size of 60 mesh, turn on the frequency conversion stirring, the stirring rate is 1200rpm, keep the asphalt temperature at 140-150°C, and stir for 0.5-1h After that, place it in an electric blast oven at 160°C for 6-8 hours. Then, add 8g of LG411S SBS, and use an experimental emulsification shear disperser to shear for 0.5-1 hour at a shear rate of 4000-5500 rpm. Finally, add 1.0g of sulfur flakes, control the temperature at 140-160°C, and stir for 4 hours at a stirring rate of 1200rmp to obtain the finished rubber asphalt, which is ready for use.

[0047] Embodiment 4 effect example

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Abstract

The invention discloses environment-friendly rubber asphalt with a stable storage performance and a preparation method of the rubber asphalt. The rubber asphalt comprises the following components in parts by weight: 30-45 parts of rubber powder, 55-70 parts of road petroleum asphalt, 0-0.2 part of a modifier and 0.02-0.2 part of a stabilizer. The preparation process comprises the following steps that the rubber powder is mixed with the road petroleum asphalt to form a blending system; then the modifier is added, particles or filaments are distributed in an asphalt matrix along with the modifier, a loose net structure is formed and exists in the asphalt matrix, and a modification effect is achieved; finally, the stabilizer is added to be subjected to chemical reaction with alkane, olefin, aromatic hydrocarbon and polar and non-polar compounds in the asphalt to generate new chemical bond combination, so that the prepared asphalt product is more stable in property, and the storage stability of the asphalt product is improved. The preparation method disclosed by the invention is simple and convenient to operate, low in production cost and environment-friendly in production process, and the produced asphalt is stable in storage performance and not easy to separate and has high practical and economic values.

Description

technical field [0001] The invention relates to an environment-friendly rubber asphalt with stable storage performance and a preparation method thereof. Background technique [0002] Throughout the history of my country's highway development in the past 30 years, from asphalt penetration to densely graded mixtures, to SMA and OGFC, every improvement in pavement structure depends on major innovations in asphalt materials. Among many asphalt materials, SBS modified technology accounts for more than 90% of the modified asphalt in my country, supporting the large-scale transportation construction represented by expressways in our country. [0003] Compared with SBS modified asphalt, rubber asphalt is a new material for road noise reduction, and its performance in all aspects has been improved to varying degrees. Rubber asphalt mainly has the following characteristics and advantages: high temperature stability, low temperature crack resistance, aging resistance, water damage res...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L21/00C08L53/02C08K3/06C08K5/1515
CPCC08L95/00C08L2207/04C08L2205/03C08L21/00C08L53/02C08K3/06
Inventor 王海荣吴亚俊
Owner 江苏亿虎沥青材料有限公司
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