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Polymer composite asphalt and preparation method thereof

A composite asphalt and polymer technology, which is applied in the direction of building structure, building components, building insulation materials, etc., can solve the problem that the modification effect of chemical modifiers cannot be fully exerted, the preparation method is not applicable, and the actual use of chemically modified asphalt is limited. And other issues

Active Publication Date: 2015-04-01
湖南省通盛工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its binding force comes from chemical bonds. As long as the reaction is sufficient, chemically modified asphalt generally has excellent storage stability. However, due to the inapplicability of the preparation method, the modification effect of chemical modifiers usually cannot be fully exerted, which affects the quality of modified asphalt. The improvement of the overall performance limits the practical use of chemically modified bitumen

Method used

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  • Polymer composite asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: (1) Take 0.4 kg of acryloyloxyethyltrimethylammonium chloride, 1.3 kg of lauryl amidopropyl betaine, and 9 kg of water and mix them uniformly at a temperature of 60-70°C;

[0015] (2) Heat 80 kg of No. 90 petroleum asphalt to 110-120 ° C, then add 0.6 kg of dibenzoyl peroxide, 7.5 kg of butane tetracarboxylic acid, 10 kg of polyalphaolefin, 5.5 kg of polyvinyl alcohol, 2500 mesh 2.5 kg of sericite powder, stirred for 80 to 90 minutes at a speed of 400 to 600 rpm;

[0016] (3) Add 5 kg of 1250-mesh sericite powder, 2.5 kg of 600-mesh sericite powder, and 2.5 kg of ethylenediaminetetraacetic acid into the mixture in step (2), and stir at 800-1000 rpm for 20-25 minute;

[0017] (4) Add the mixture in step (1) to the mixture in step (3), and stir at 600-800 rpm for 35-45 minutes under the condition of 120-130° C. to obtain the product.

Embodiment 2

[0018] Example 2: (1) Take 0.4 kg of acryloyloxyethyltrimethylammonium chloride, 1.2 kg of lauryl amidopropyl betaine, and 8 kg of water and mix them uniformly at a temperature of 60-70°C;

[0019] (2) Heat 77 kg of No. 90 petroleum asphalt to 110-120 ° C, then add 0.6 kg of dibenzoyl peroxide, 6 kg of butane tetracarboxylic acid, 9 kg of polyalphaolefin, 5 kg of polyvinyl alcohol, 2500 mesh 2 kg of sericite powder, stirred at 400-600 rpm for 80-90 minutes;

[0020] (3) Add 4 kg of 1250-mesh sericite powder, 2 kg of 600-mesh sericite powder, and 2 kg of ethylenediaminetetraacetic acid to the mixture in step (2), and stir at 800-1000 rpm for 20-25 minute;

[0021] (4) Add the mixture in step (1) to the mixture in step (3), and stir at 600-800 rpm for 35-45 minutes under the condition of 120-130° C. to obtain the product.

Embodiment 3

[0022] Example 3: (1) Take 0.5 kg of acryloyloxyethyltrimethylammonium chloride, 1.5 kg of lauryl amidopropyl betaine, and 9 kg of water and mix them uniformly at a temperature of 60-70°C;

[0023] (2) Heat 84 kg of No. 90 petroleum asphalt to 110-120 ° C, then add 0.8 kg of dibenzoyl peroxide, 8 kg of butane tetracarboxylic acid, 11 kg of polyalphaolefin, 6 kg of polyvinyl alcohol, 2500 mesh 3 kg of sericite powder, stirred at 400-600 rpm for 80-90 minutes;

[0024] (3) Add 6 kg of 1250-mesh sericite powder, 3 kg of 600-mesh sericite powder, and 3 kg of ethylenediaminetetraacetic acid into the mixture in step (2), and stir at 800-1000 rpm for 20-25 minute;

[0025] (4) Add the mixture in step (1) to the mixture in step (3), and stir at 600-800 rpm for 35-45 minutes under the condition of 120-130° C. to obtain the product.

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Abstract

The invention discloses polymer composite asphalt, which is prepared from the following raw materials in parts by weight: 77-84 parts of petroleum asphalt, 0.4-0.5 part of acryloyloxyethyl trimethyl ammonium chloride, 1.2-1.5 parts of lauroamide propyl betaine, 8-9 parts of water, 8-12 parts of sericite powder, 2-3 parts of edetic acid, 0.6-0.8 part of dibenzoyl peroxide, 6-8 parts of butanetetracarboxylic acid, 9-11 parts of poly-alpha-olefin and 5-6 parts of polyvinyl alcohol; and the sericite powder is prepared from 2500-mesh sericite powder, 1250-mesh sericite powder and 600-mesh sericite powder at the ratio of 1 to 2 to 1. The components are very excellent in overall performance by combination; and the polymer composite asphalt has relatively good liquidity, heat stability and water resistance, and outstanding tenacity and elastoplasticity.

Description

technical field [0001] The invention belongs to the field of engineering materials, and in particular relates to a polymer composite asphalt and a preparation method thereof. Background technique [0002] With the rapid growth of highway traffic volume and vehicle load, there is an urgent need to improve road performance and prolong road service life. The use of modified asphalt materials is one of the effective ways to achieve this goal. Asphalt modification methods are divided into physical modification and chemical modification. The representative of physically modified asphalt is the most widely used SBS modified asphalt, which has relatively excellent comprehensive performance. However, the binding force between SBS modifier and petroleum asphalt comes from van der Waals force, which is much smaller than chemical bonds, so SBS modified asphalt usually has compatibility problems and is prone to segregation. Chemical modification of asphalt is to select some chemical re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L29/04C08L23/00C08K3/34C08J3/03
Inventor 李保集
Owner 湖南省通盛工程有限公司
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