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Process for preparing modified asphalt by using chemical method

A technology of modified asphalt and chemical method, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve problems such as backward technology, imperfect equipment, and unsound production system, and achieve the effect of simple preparation process and short process time

Inactive Publication Date: 2015-03-25
廖鹏程
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the domestic research technology is not yet proficient, the equipment is not perfect, the production system is not perfect, and the technology is relatively backward
Combined with the research status of bitumen at home and abroad, 70%-80% of the total output of bitumen is produced by distillation, and there are certain defects and disadvantages in the production of traditional processes such as solvent method, oxidation method and blending method.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Weigh 200g of asphalt into a beaker, heat the beaker in an oil bath at 80°C, and stir gently with a glass rod to prevent local overheating;

[0030] ⑵ When the asphalt stops bubbling, stop heating;

[0031] (3) Quickly pour the dehydrated asphalt into the high-speed shearing machine, start the high-speed shearing machine, and set the speed to 300r / min;

[0032] (4) Take 20g of polyvinyl chloride and 5g of cross-linked diene, put them into a grinding tank and grind them into tiny particles;

[0033] (5) Add the collected and ground polyvinyl chloride and cross-linked diene into the shearing machine, and increase the speed of the shearing machine to 600r / min;

[0034] ⑹Shear for 5 minutes to obtain a modified asphalt.

Embodiment 2

[0036] (1) Weigh 500g of asphalt into a beaker, heat the beaker in an oil bath at 90°C, and stir gently with a glass rod to prevent local overheating;

[0037] ⑵ Observe the bubbling of the asphalt, and stop heating when the bubbling stops;

[0038] (3) Quickly pour the dehydrated asphalt into the high-speed shearing machine, start the high-speed shearing machine, and set the speed to 400r / min;

[0039] (4) Take 50g of polyvinyl chloride and 12g of cross-linked diene, put them into a grinding tank and grind them into tiny particles;

[0040] (5) Add the collected and finely ground polyvinyl chloride and cross-linked diene into the shearing machine, and increase the speed of the shearing machine to 700r / min;

[0041] ⑹ Cut for 10 minutes to obtain a modified asphalt.

Embodiment 3

[0043] (1) Weigh 5000g of asphalt and put it into an iron container, heat it in an oil bath at 100°C, and stir it with a wooden stick to prevent local overheating;

[0044] ⑵ Observe the bubbling of the asphalt, and stop heating when the bubbling stops;

[0045] (3) Quickly pour the dehydrated asphalt into the high-speed shearing machine, start the high-speed shearing machine, and set the speed at 500r / min;

[0046] (4) Take 300 g of cross-linked diene and 75 g of cross-linked diene, put them into a grinding tank and grind them into tiny particles;

[0047] (5) Add the collected and finely ground polyvinyl chloride and cross-linked diene into the shearing machine, and increase the speed of the shearing machine to 800r / min;

[0048] ⑹ Cut for 15 minutes to obtain a modified asphalt.

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Abstract

The invention provides a process for preparing modified asphalt by using a chemical method. The process comprises the following steps: firstly heating asphalt for dewatering, then throwing grinded polyvinyl chloride, cross-linked alkadiene and the asphalt into a shearing machine, and shearing and mixing the polyvinyl chloride with the asphalt under the action of the cross-linked alkadiene. The prepared modified asphalt is good in stability and is free of delamination.

Description

technical field [0001] The invention relates to an asphalt product material, in particular to a modified asphalt and a preparation method thereof, belonging to the field of new materials. Background technique [0002] With the development of my country's economy, the traffic volume has increased rapidly, the axle load of automobiles has increased, the size of vehicles, overloading and [0003] Driving channelization, etc., have made the road use conditions gradually improved, and the asphalt concrete pavement is facing a severe test. to solve this [0004] Two problems, in addition to optimizing the pavement structure design and strictly controlling the construction quality, there must be asphalt with excellent performance [0005] Material. In some road sections with harsh climate and heavy traffic load, especially on roads with special requirements, use [0006] Ordinary road asphalt is difficult to meet the requirements of use, so only by adopting new technology to p...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L27/06C08K5/01
Inventor 廖鹏程
Owner 廖鹏程
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