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Preparation method of ethylene acrylic acid ionomer modified asphalt

A technology of ethylene acrylic acid ionomer and ethylene acrylic acid, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of low flow resistance, rutting resistance and crack resistance, and achieve significant technological progress and high temperature performance Good, strong shear resistance effect

Inactive Publication Date: 2017-06-23
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned technical problems in the prior art, the invention provides a kind of preparation method of ethylene acrylic acid ionomer modified asphalt, the preparation method of described this ethylene acrylic acid ionomer modified asphalt should solve the problems in the prior art The technical problems of poor pavement anti-flow, anti-rutting ability at high temperature, and low anti-cracking ability at low temperature

Method used

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  • Preparation method of ethylene acrylic acid ionomer modified asphalt
  • Preparation method of ethylene acrylic acid ionomer modified asphalt

Examples

Experimental program
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Effect test

Embodiment 1

[0020] First, weigh 500g of base asphalt (AH-90) and pour it into a 1L iron tank, heat it to 190°C and it is in a flowing state, stir at a low speed, slowly add 20g of EAA3460 (Dow, USA) to the base asphalt, and stir at a low speed of 1250r / min 10min, after the EAA particles are melted, add 0.617g Ca(OH) 2 Slowly add them into the base asphalt respectively, stir at the same speed at low speed for 15 minutes, increase the speed to 3000r / min and continue high-speed shearing for 35 minutes, then stop, and perform sample pouring and testing.

Embodiment 2

[0022] First, weigh 500g of base asphalt (AH-90) and pour it into a 1L iron tank, heat it to 190°C and it is in a flowing state, stir at a low speed, slowly add 20g of EAA3460 (Dow, USA) to the base asphalt, and stir at a low speed of 1250r / min 10min, after the EAA particles are melted, add 1.233g Ca(OH) 2 Slowly add them into the base asphalt respectively, stir at the same speed at low speed for 15 minutes, increase the speed to 3000r / min and continue high-speed shearing for 35 minutes, then stop, and perform sample pouring and testing.

Embodiment 3

[0024] First, weigh 500g of base asphalt (AH-90) and pour it into a 1L iron tank, heat it to 190°C and it is in a flowing state, stir at a low speed, slowly add 20g of EAA3460 (Dow, USA) to the base asphalt, and stir at a low speed of 1250r / min 10min, after the EAA particles are melted, add 3.083g Ca(OH) 2 Slowly add them into the base asphalt respectively, stir at the same speed at low speed for 15 minutes, increase the speed to 3000r / min and continue high-speed shearing for 35 minutes, then stop, and perform sample pouring and testing.

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Abstract

The invention provides a preparation method of ethylene acrylic acid ionomer modified asphalt. The method comprises the following steps: weighing matrix asphalt, heating to 160-220 DEG C to a flowing state, stirring at the low speed of 500-2000 r / min, adding an ethylene acrylic acid ionomer into the matrix asphalt, melting; adding a metal hydroxide / oxide through mechanical stirring into the matrix asphalt at the shearing speed of 500-2000 r / min, mixing for 10-20 minutes; enabling the neutralization value of the ethylene acrylic acid ionomer and the metal hydroxide / oxide to be 50%-400%, regulating the shearing speed to 2000-5000 r / min, mixing for 30-60 minutes, and cooling to obtain the ethylene acrylic acid ionomer modified asphalt. The ionomer prepared from EAA and the metal hydroxide / oxide is used to modify the matrix asphalt, and the asphalt material which is excellent in high temperature property, high in viscosity and strong in anti-shearing ability and is not liable to brittle failure is obtained.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to asphalt, in particular to a preparation method of ethylene acrylic acid ionomer modified asphalt. Background technique [0002] Petroleum asphalt (Petroleum asphalt) is a product of crude oil processing, which is black or dark brown viscous liquid, semi-solid or solid at room temperature. Petroleum asphalt is used as infrastructure materials, raw materials and fuels, and its application ranges include transportation (roads, railways, aviation, etc.), construction, agriculture, water conservancy projects, industry (extraction industry, manufacturing), civil and other departments. However, as petroleum asphalt is a viscoelastic material, it has a low viscosity at high temperature and is easy to flow, and it is easy to be brittle after low temperature curing, and has strong temperature sensitivity. With the sharp increase in traffic flow and driving frequency of modern highways and roa...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L23/08C08K3/22
CPCC08L95/00C08L2201/08C08L2555/50C08L2555/86C08L23/0876C08K3/22C08K2003/2224C08K2003/2296C08K2003/2206
Inventor 欧阳春发徐春叶张少东高群阳伟刚
Owner SHANGHAI INST OF TECH