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Sepiolite-loaded soluble rubber powder modified asphalt and preparation method thereof

A technology for modifying asphalt and sepiolite powder, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of excessive viscosity, easy aging, and poor production environmental protection, and achieves improved stability, excellent adsorption performance, improved The effect of excessive viscosity

Active Publication Date: 2019-08-02
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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  • Sepiolite-loaded soluble rubber powder modified asphalt and preparation method thereof
  • Sepiolite-loaded soluble rubber powder modified asphalt and preparation method thereof
  • Sepiolite-loaded soluble rubber powder modified asphalt and preparation method thereof

Examples

Experimental program
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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 sepiolite-loaded soluble rubber powder modified asphalt and a preparation method thereof. The asphalt comprises the following raw materials in parts by weight: 10-15 parts ofrubber granules, 65-73 parts of petroleum asphalt, 10-15 parts of sepiolite powder, 0.1-1 part of a stabilizer, 5-8 parts of rubber oil and 0.1-1 part of a cross-linking agent. The preparation methodcomprises the following steps: drying the sepiolite powder for later use; shearing the rubber granules to obtain rubber powder, mixing the rubber powder with the sepiolite powder, adding the rubber oil, and carrying out dispersion treatment; heating the petroleum asphalt, adding a sepiolite powder loaded rubber powder modifier, shearing a mixed material, adding the stabilizer, stirring, adding thecross-linking agent, and stirring; heating the material, carrying out swelling development on the sepiolite powder and the rubber powder in the petroleum asphalt to obtain the sepiolite-loaded soluble rubber powder modified asphalt. Compared with the prior art, the asphalt is capable of remarkably alleviating problems that aging can be resulted as rubber asphalt is too large in viscosity in the production and construction process and too high in construction temperature, and has the advantages of being small in production smell, good in environment protection, and the like.

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 Applications(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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