Multi-chain polyolefin and styrene-containing composite modified asphalt for recycling and preparation method thereof

A styrene-based, composite modification technology, used in building components, building insulation materials, buildings, etc., can solve the problems of unstable quality, short duration of regeneration capacity, and insignificant recovery of indicators, and achieves the increase of microcosm. The effect of surface roughness, improved adhesion and surface activity, overall performance improvement

Active Publication Date: 2022-03-11
江苏中亿通道路新材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional asphalt regenerants use waste engine oil, hydraulic oil, and tung oil as the main materials, and the quality is not stable. The index recovery after regeneration is not obvious, and its regeneration ability does not last long, and the index decays after a period of use. soon

Method used

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  • Multi-chain polyolefin and styrene-containing composite modified asphalt for recycling and preparation method thereof
  • Multi-chain polyolefin and styrene-containing composite modified asphalt for recycling and preparation method thereof
  • Multi-chain polyolefin and styrene-containing composite modified asphalt for recycling and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A multi-chain polyolefin and styrene-containing compound modified asphalt for regeneration, the base asphalt, styrene-containing modifier, multi-chain polyolefin modifier, rubber oil, naphthenic oil regeneration agent, The mass percentages of each component of the stabilizer are as follows:

[0025]

[0026] (1) Heat the base asphalt to 165-180°C in the reaction kettle, add a styrene-containing modifier after the temperature is stable, stir for 0.5-1h until it is uniform, and pass the evenly stirred asphalt through a colloid mill for high-speed shearing Cutting, the shearing power is 20-40t / h. After the shearing is completed, stir for 0.5h to 1h; then add a multi-chain polyolefin modifier and continue to stir for 0.5 to 1h.

[0027] (2) Add rubber oil to the bitumen obtained in step (1), and stir at a temperature of 170-180°C for 0.5h-1h. Then slowly add a stabilizer, stir for 2-3 hours, then add a naphthenic oil regeneration agent at a temperature of 170-180°C and...

Embodiment 2

[0033] A multi-chain polyolefin and styrene-containing compound modified asphalt for regeneration, the base asphalt, styrene-containing modifier, multi-chain polyolefin modifier, rubber oil, naphthenic oil regeneration agent, The mass percentages of each component of the stabilizer are as follows:

[0034]

[0035] (1) Heat the base asphalt in the reaction kettle to 165-180°C, add a styrene-containing modifier after the temperature is stable, stir for 0.5-1h until it is uniform, and pass the evenly stirred asphalt through a colloid mill for high-speed Shearing, the shearing power is 20-40t / h. After the shearing is completed, stir for 0.5h to 1h; then add a multi-chain polyolefin modifier and continue to stir for 0.5 to 1h.

[0036] (2) Add rubber oil to the bitumen obtained in step (1), and stir at a temperature of 170-180°C for 0.5h-1h. Then slowly add a stabilizer, stir for 2-3 hours, then add a naphthenic oil regeneration agent at a temperature of 170-180°C and continu...

Embodiment 3

[0042] A multi-chain polyolefin and styrene-containing compound modified asphalt for regeneration, the base asphalt, styrene-containing modifier, multi-chain polyolefin modifier, rubber oil, naphthenic oil regeneration agent, The mass percentages of each component of the stabilizer are as follows:

[0043]

[0044]

[0045] (1) Heat the base asphalt in the reaction kettle to 165-180°C, add a styrene-containing modifier after the temperature is stable, stir for 0.5-1h until it is uniform, and pass the evenly stirred asphalt through a colloid mill for high-speed Shearing, the shearing power is 20-40t / h. After the shearing is completed, stir for 0.5h to 1h; then add a multi-chain polyolefin modifier and continue to stir for 0.5 to 1h.

[0046] (2) Add rubber oil to the bitumen obtained in step (1), and stir at a temperature of 170-180°C for 0.5h-1h. Then slowly add a stabilizer, stir for 2-3 hours, then add a naphthenic oil regeneration agent at a temperature of 170-180°C...

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Abstract

The invention discloses a multi-chain polyolefin and styrene-containing composite modified asphalt for regeneration and a preparation method thereof. The mass percentage of each component is as follows: 71%-95% of base asphalt, 1%-7% of styrene modifier, 1%-7% of multi-chain polyolefin modifier, 1%-5% of rubber oil, Naphthenic oil regeneration agent 2% to 10%, stabilizer 0.01% to 0.2%. Heat the base asphalt to a fluid state, add styrene-based modifiers and multi-chain polyolefin modifiers into the base asphalt, and shear at a high speed through a colloid mill. Then add rubber oil and stabilizer to base asphalt in turn, stir evenly and add aromatic oil rejuvenator to get the product. This method uses a styrene-containing modifier to modify the base asphalt, so that the material has viscous toughness and elasticity; a multi-chain polyolefin modifier is used to make the material have higher dynamic viscosity and high temperature stability, and excellent The characteristics of low kinematic viscosity; the use of naphthenic oil rejuvenation agent makes the bitumen components reconcile and regenerate to a certain extent, and restores its viscosity characteristics.

Description

technical field [0001] The invention relates to a kind of recycled asphalt, in particular to a kind of special asphalt for regeneration which is compounded and modified with multi-chain polyolefin and styrene-containing compound, and a preparation method thereof, and a method for using the special asphalt for regeneration. Background technique [0002] In addition to physical damage such as tire wear and impact, asphalt pavement must also withstand the influence of external natural environments such as solar radiation, water, and temperature changes. This change process is called the aging of asphalt mixture. A large number of domestic and foreign studies have shown that after a period of use of waste asphalt mixture, although its overall performance cannot meet the road use requirements, the asphalt and stone materials in it can be used to partially replace new materials and play a new role. The performance of asphalt is a decisive part. [0003] The process of asphalt ag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L23/30C08L53/02C08L9/06C08L91/00
CPCC08L95/00C08L23/30C08L53/02C08L9/06C08L91/00
Inventor 关永胜崔传炜张志祥陈李峰翟金陵顾浩天
Owner 江苏中亿通道路新材料有限公司
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