A kind of sepiolite-loaded soluble rubber powder modified asphalt and its preparation method

A technology of sepiolite powder and modified asphalt, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of poor production environmental protection, excessive viscosity, easy segregation, etc., and achieve the effect of easy adsorption

Active Publication Date: 2021-07-20
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a sepiolite-loaded soluble rubber powder modified asphalt and its preparation method in order to overcome the above-mentioned defects in the prior art, so as to improve the excessive viscosity, easy aging, and easy segregation of traditional rubber-based asphalt. , poor production environmental protection and other issues

Method used

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  • A kind of sepiolite-loaded soluble rubber powder modified asphalt and its preparation method
  • A kind of sepiolite-loaded soluble rubber powder modified asphalt and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] In this example, sepiolite-loaded soluble rubber powder modified asphalt is prepared from the following raw materials in parts by weight:

[0052] 71 parts of petroleum asphalt, 12 parts of 100 mesh rubber particles, 12 parts of sepiolite powder, 0.1 part of stabilizer dibenzothiazole disulfide, 5 parts of rubber oil, crosslinking agent 4,4'-diamino-3,3'- 0.1 part of dichlorodiphenylmethane; wherein the petroleum asphalt is straight-run asphalt, the sum of saturated and aromatic content in its composition should be between 55%, and the saturated content should be less than 16%.

[0053] Prepare the soluble rubber powder modified asphalt with high storage stability as follows:

[0054] (1) Put the sepiolite powder in an oven at 150°C for 3 hours to reach a dry state, and set aside;

[0055] (2) Put 100-mesh rubber granules in a high-speed shearing machine, shear at a speed of 4000 rpm for 60 minutes, then mix the sheared rubber powder with sepiolite powder, add rubber o...

Embodiment 2

[0059] The sepiolite-loaded soluble rubber powder modified asphalt is prepared from the following raw materials in parts by weight: 72 parts of petroleum asphalt, 10 parts of 100 mesh rubber particles, 12 parts of sepiolite powder, and 0.1 part of stabilizer dibenzothiazole disulfide , 6 parts of rubber oil, 0.1 part of crosslinking agent 4,4'-diamino-3,3'-dichlorodiphenylmethane; among them, petroleum asphalt is straight-run asphalt, the sum of saturated and aromatic content in its composition It should be between 55%, and the saturated content should be less than 16%.

[0060] The preparation method of the sepiolite-loaded soluble rubber powder modified asphalt is the same as that in Example 1.

Embodiment 3

[0062] The sepiolite-loaded soluble rubber powder modified asphalt is prepared from the following raw materials in parts by weight: 68 parts of petroleum asphalt, 15 parts of 100 mesh rubber particles, 12 parts of sepiolite powder, and 0.1 part of stabilizer dibenzothiazole disulfide , 5 parts of rubber oil, 0.1 part of crosslinking agent 4,4'-diamino-3,3'-dichlorodiphenylmethane; among them, petroleum asphalt is straight-run asphalt, the sum of saturated and aromatic content in its composition It should be between 55%, and the saturated content should be less than 16%.

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Abstract

The invention relates to a sepiolite-loaded soluble rubber powder modified asphalt and a preparation method thereof. The raw materials include the following composition in parts by weight: 10-15 parts of rubber particles; 65-73 parts of petroleum asphalt; 10-15 parts of sepiolite powder; 0.1-1 part of agent; 5-8 parts of rubber oil; 0.1-1 part of cross-linking agent; the preparation method is: dry the sepiolite powder and set aside; cut the rubber particles to obtain rubber powder, and mix the rubber powder with sea foam Mix pumice powder, add rubber oil, and disperse; heat petroleum asphalt, add sepiolite powder-loaded rubber powder modifier, shear the mixture, add stabilizer, stir, then add cross-linking agent, stir; Raise the temperature of the material to make sepiolite powder and rubber powder swell and develop in petroleum asphalt to obtain sepiolite-loaded soluble rubber powder modified asphalt. Compared with the prior art, the present invention significantly improves the problems of rubber asphalt aging caused by excessive viscosity and high construction temperature during production and construction, and has the advantages of low production odor and strong environmental protection.

Description

technical field [0001] The invention relates to a novel rubber modified asphalt, in particular to a sepiolite-loaded soluble rubber powder modified asphalt and a preparation method thereof. Background technique [0002] The vigorous development of the automobile industry has brought a large amount of waste tires. According to statistics, in 2017, the production of waste tires in my country exceeded 5 million tons. How to deal with waste tires has always been a difficult and hot issue at home and abroad. Among several mainstream methods, the production of rubber powder is the most environmentally friendly method for the purpose of recycling. In the field of highway engineering, "rubber asphalt" is prepared by adding rubber powder to asphalt, which can improve road performance and realize resource utilization of waste tires. Its application history exceeds 60 years. However, the current technology still has certain defects: (1) desulfurization and degradation are not suffici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L19/00C08L91/00C08K3/34C08K5/47C08K5/18C08K7/00
CPCC08L95/00C08L2205/03C08L2312/00C08L19/003C08L91/00C08K3/346C08K5/47C08K5/18C08K7/00
Inventor 周璐黄卫东吕泉
Owner TONGJI UNIV
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