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Preparation method of waste rubber powder/SBS composite modified water-based asphalt

A compound modification and waste rubber powder technology, which is applied in building components, building insulation materials, construction, etc., can solve the problems of difficult emulsification of emulsified asphalt, achieve good weather resistance, and solve the problem of mixing and storing ionic emulsified asphalt and aggregates. Stable, high tensile effect

Active Publication Date: 2021-02-05
湖州合达图宏新材料技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: the problem that the existing emulsified asphalt is difficult to emulsify

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of waste rubber powder / SBS composite modified water-based asphalt, which comprises the following steps:

[0034] 1) Weigh 30g of ethylene-acrylic acid copolymer aqueous dispersion (supplier, Michelman 95435), add it to 300g of water, stir and mix, and heat to 60°C to obtain ethylene-acrylic acid copolymer aqueous dispersion aqueous solution ( soap);

[0035] 2) Weigh 350g of base asphalt (70#, Sinopec Zhenhai) and heat it to 190°C, add 105g of rubber powder (supplier, ultra-fine type, Zhonghong Environmental Technology Group Co., Ltd.) and 35g of SBS (supplier, Shanghai Titan Technology Co., Ltd.), after 4 hours of high-speed shear dispersion at a speed of 6000r / min, waste rubber powder / SBS composite modified asphalt was obtained, and put into an oven for subsequent use;

[0036] 3) When the aqueous solution (soap liquid) of ethylene-acrylic acid copolymer water dispersion reaches the temperature required for the test, increase the speed of the hig...

Embodiment 2

[0043] A preparation method of waste rubber powder / SBS composite modified water-based asphalt, which comprises the following steps:

[0044] 1) Weigh 30g of ethylene-acrylic acid copolymer aqueous dispersion (supplier, Michelman 95435), add it to 300g of water, stir and mix, and heat to 60°C to obtain ethylene-acrylate copolymer aqueous dispersion aqueous solution (soap);

[0045] 2) Weigh 350g of base asphalt (70#, Sinopec Zhenhai) and heat it to 180°C, then add 70g of rubber powder (supplier, Zhonghong Environmental Technology Group Co., Ltd. and 35g of SBS (supplier, Shanghai Titan Technology Co., Ltd. company), obtained waste rubber powder / SBS modified asphalt after high-speed shear dispersion at a speed of 8000r / min for 4.5h, and put it into an oven for subsequent use;

[0046] 3) When the aqueous solution (soap liquid) of ethylene-acrylic acid copolymer water dispersion reaches the temperature required for the test, increase the speed of the high-speed shear emulsifier to...

Embodiment 3

[0048] A kind of preparation method of waste rubber powder / SBS modified water-based asphalt, it may further comprise the steps:

[0049] 1) Weigh 30g of ethylene-acrylate copolymer aqueous dispersion (supplier, Michelman 95435), add it to 300g of water, stir and mix, and heat to 75°C to obtain ethylene-acrylate copolymer aqueous dispersion aqueous solution (soap);

[0050] 2) Weigh 350g of base asphalt and heat it to 180°C, add 35g of rubber powder (supplier, Zhonghong Environmental Protection Technology Group Co., Ltd.) and 35g of SBS (supplier, Shanghai Titan Technology Co., Ltd.), at 8000r / min After dispersing for 4 hours at a high speed at a high speed, the waste rubber powder / SBS composite modified asphalt was obtained, and put into an oven for standby;

[0051] 3) When the aqueous solution (soap liquid) of ethylene-acrylic acid copolymer water dispersion reaches the temperature required for the test, increase the speed of the high-speed shear emulsifier to 9000r / min, an...

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Abstract

The invention discloses a preparation method of waste rubber powder / SBS composite modified water-based asphalt, wherein the preparation method is characterized by comprising the steps: adding an ethylene-acrylic acid copolymer dispersion body as an emulsifier, adding into water, stirring, mixing, and heating to 60-80 DEG C to obtain an ethylene-acrylic acid copolymer dispersion body aqueous solution; and heating asphalt to 180-200 DEG C, adding waste rubber powder and SBS, shearing and dispersing to obtain waste rubber powder / SBS composite modified asphalt, and putting the waste rubber powder / SBS composite modified asphalt into an oven for later use; and adding the heated asphalt for later use into an ethylene-acrylic acid copolymer dispersion body aqueous solution, and carrying out shearing dispersion to obtain the waste rubber powder / SBS composite modified water-based asphalt in an emulsion state. The preparation process of the asphalt is simple and rapid, the product has high tensile strength and elongation at break, meanwhile, energy loss and environmental pollution are reduced, and the asphalt has wide application prospects.

Description

technical field [0001] The invention relates to a preparation method of an asphalt material, in particular to a preparation method of waste rubber powder / styrene butadiene styrene copolymer (SBS) composite modified water-based asphalt, which belongs to the technical field of road construction. Background technique [0002] At present, SBS modified asphalt is the most widely used and has the best comprehensive performance, but its price is high and it is easily fluctuated by the influence of oil prices. Therefore, its large-scale application is limited to some extent. With the in-depth development of research and development, the rubber powder / SBS composite modified asphalt developed by technicians on this basis has obvious advantages, such as reducing the self-weight of bridges, improving performance, prolonging service life, reducing noise, recycling waste tires and The advantages of low cost make this research attract attention and be widely used. [0003] However, the ru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L19/00C08L53/02C08L23/08
CPCC08L95/005C08L2207/24C08L2205/035C08L2555/34C08L2555/84C08L2555/86C08L19/003C08L53/02C08L23/0869
Inventor 欧阳春发李伟吴修春高群单晓茜
Owner 湖州合达图宏新材料技术股份有限公司
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