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Waste polymer modified asphalt composition and preparation method thereof

A technology of modifying asphalt and polymers, which is applied to building structures, building components, and building insulation materials. Facilitate industrial application and improve the effect of dispersion

Active Publication Date: 2015-02-18
河北省高速公路邢汾管理处 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It mainly solves the problem that waste polymer materials are unstable in asphalt, waste plastics float up and waste rubber sinks when stored at high temperature

Method used

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  • Waste polymer modified asphalt composition and preparation method thereof
  • Waste polymer modified asphalt composition and preparation method thereof
  • Waste polymer modified asphalt composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step 1: Take 25g of aromatic oil (compatibilizer) and heat it to 140°C and stir for 5 minutes, then heat up to 166°C and add 20g of waste low-density polyethylene particles and 10g of Xinjiang rock asphalt (natural asphalt) at a shear rate of 5000r / min Cut down for 30 minutes to obtain a premix of waste plastic particles;

[0044] Step 2: Take 400g of 70# petroleum asphalt, heat it to 160°C and stir for 5 minutes, add the waste plastic granule premix prepared in Step 1, add 40g of waste rubber powder and 5g of SBS at the same time, heat up to 180°C, Shear at a rate of 5000r / min for 30min;

[0045] Step 3: Then add 1g of stabilizer (sulfur) and shear at 180°C for 30min,

[0046] The shear rate is 5000r / min. Thus, the waste polymer-modified asphalt composition 1 of the present invention was obtained.

Embodiment 2

[0048] Step 1: Take 37.5g tung oil (compatibilizer) and 25g biological asphalt and heat to 140°C and stir for 5min, then heat up to 160°C and add 10g waste high-density polyethylene particles and 10g North American rock asphalt (natural asphalt) at a shear rate Shear at 5000r / min for 30min to obtain a premix of waste plastic granules;

[0049] Step 2: Take 350g of 70# petroleum asphalt, heat it to 160°C and stir for 5 minutes, add the waste plastic granule premix prepared in Step 1, add 60g of waste rubber powder and 6.25g of SBS at the same time, heat up to 180°C, Shear at a rate of 5000r / min for 30min;

[0050] Step 3: Then add 1.25g of stabilizer (sulfur) and shear at 180°C for 45min at a shear rate of 5000r / min. Thus, the waste polymer modified asphalt composition 2 of the present invention was obtained.

Embodiment 3

[0052] Step 1: Take 9g of aromatic oil (compatibilizer) and heat it to 140°C and stir for 5min, then raise the temperature to 160°C, add 5g of waste particles, 5g of polypropylene and coal tar pitch for 45min at a shear rate of 5000r / min to obtain Premix of waste plastic granules;

[0053] Step 2: Take 425g of 70# petroleum asphalt, heat it to 160°C and stir for 5 minutes, then add the waste plastic granule premix prepared in Step 1, add 50g of waste rubber powder and 5g of SBS at the same time, heat up to 180°C, Shear at a rate of 5000r / min for 30min;

[0054] Step 3: Then add 1 g of stabilizer (sulfur) and shear at 180° C. for 45 min with a shear rate of 5000 r / min. Thus, the waste polymer modified asphalt composition 3 of the present invention was obtained.

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Abstract

The invention relates to a waste polymer modified asphalt composition. The waste polymer modified asphalt composition comprises following components in parts by weight; 60-85 parts of petroleum asphalt, 6-20 parts of a waste polymer material, 1-8 parts of a compatilizer, 1-1.5 parts of SBS, 0.01-0.5 parts of a stabilizing agent, and 1-10 parts of one or more of native asphalt, coal pitch or biological asphalt. The waste polymer modified asphalt composition can well increase high-temperature storage stability of waste polymer material modified asphalt; pre-swelling performance of the polymer material and similar compatibility with asphalt are improved as the compatilizer is added; storage stability of the waste polymer material in asphalt can be improved extremely as a small quantity of SBS and a small quantity of the stabilizing agent are added; producing cost of the composition can be decreased as the native asphalt, coal pitch or biological asphalt replaces a portion of the petroleum asphalt; the prepared modified asphalt is excellent in high-temperature performance and low-temperature ductility; and the preparation method is simple, safe, and convenient for industrial application.

Description

technical field [0001] The invention belongs to the field of road building materials, and in particular relates to a waste polymer modified asphalt composition and a preparation method thereof; the waste polymer modified asphalt composition can be applied to road construction. Background technique [0002] Petroleum asphalt is the end product of petroleum refining. Due to the current over-exploitation and use, petroleum resources are decreasing day by day and facing the danger of depletion. Scientists predict that by the middle of this century, around 2050, oil resources will be exhausted. The increasing scarcity of petroleum resources has led to rising prices of petroleum asphalt. [0003] In recent years, due to the rapid increase in oil prices and the environmental pressure brought by waste polymer materials, the addition of waste polymer materials to modified asphalt and its application in roads has attracted widespread attention; and because its raw materials come from...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L23/06C08L23/12C08L53/02C08L101/00C08K3/06
Inventor 李作恒曹东伟赵文忠张海燕马泽铭范勇军王丙兴张艳君
Owner 河北省高速公路邢汾管理处
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