Weather-resistance modified asphalt as well as preparation technology and application thereof

A preparation process and weather resistance technology, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of complicated preparation process, high difficulty, poor weather resistance, etc., and achieve the goal of improving preparation efficiency, using less amount, and reducing development time Effect

Inactive Publication Date: 2018-08-10
ZHEJIANG QIAOXING CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the asphalt prepared in this invention patent has the problems of poor weather resistance, complicated and difficult preparation process

Method used

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  • Weather-resistance modified asphalt as well as preparation technology and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] S1. Heating and melting: first add 89kg of coal tar pitch in the heating pot, heat to 125°C and maintain, stir and melt the coal tar pitch;

[0047] S2. Improved grinding: Add 5kg of linear SBS into the heating pot and stir evenly, during which the temperature remains at 125℃;

[0048] S3. Plasticization and development: Add 0.5kg of stearic acid in the heating pot, then increase the temperature to 170°C and keep it, stir it evenly and let it stand for 1.5h;

[0049] S4. Viscosity reduction development: Divide 1.5kg of silicone-fluorine viscosity reducer into three parts, among which the second part and the third part are heated after 0.5h of adding the former. The silicone-fluorine viscosity reducer is added The temperature of the heating pot is 150°C, and the last part of the silicon-fluorine viscosity reducer is evenly stirred and allowed to stand for 3.5 hours;

[0050] S5. Improved development: add 0.5kg of phthalic anhydride and 3.5kg of rubber powder activator in the hea...

Embodiment 2

[0053] S1. Heating and melting: first add 90kg of coal tar pitch in the heating pot, heat to 130°C and keep it, stir and melt the coal tar pitch;

[0054] S2. Improved grinding: Add 4kg of linear SBS into the heating pot and stir it evenly, during which the temperature remains at 130℃;

[0055] S3. Plasticization and development: Add 0.5kg of stearic acid in the heating pot, then increase the temperature to 175°C and keep it, stir it and let it stand for 2.0h;

[0056] S4. Viscosity reduction development: Divide 1.5kg of silicone-fluorine viscosity reducer into three parts, of which the second part and the third part are heated after 0.5h of adding the former. The silicone-fluorine viscosity reducer is added The temperature of the heating pot is 152°C, and the last part of the silicon-fluorine viscosity reducer is evenly stirred and allowed to stand for 3.5 hours;

[0057] S5. Improved development: add 0.5 kg of phthalic anhydride and 3.5 kg of rubber powder activator in the heating p...

Embodiment 3

[0059] S1. Heating and melting: first add 89kg of coal tar pitch in the heating pot, heat to 135°C and keep it, stir and melt the coal tar pitch;

[0060] S2. Improved grinding: Add 4kg of linear SBS into the heating pot and stir it evenly, during which the temperature is kept at 135℃;

[0061] S3. Plasticization and development: Add 0.5kg of stearic acid in the heating pot, then increase the temperature to 180°C and keep it, stir it evenly and let it stand for 2.5h;

[0062] S4. Viscosity reduction development: Divide 1.5kg of silicone-fluorine viscosity reducer into three parts, among which the second part and the third part are heated after 0.5h of adding the former. The silicone-fluorine viscosity reducer is added The temperature of the heating pot is 155°C, and the last part of the silicon-fluorine viscosity reducer is evenly stirred and allowed to stand for 4.0 hours;

[0063] S5. Improved development: add 0.5kg of phthalic anhydride and 4.5kg of rubber powder activator in the h...

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Abstract

The invention belongs to the technical field of preparation of asphalt and in particular relates to weather-resistance modified asphalt as well as a preparation technology and application thereof. Theweather-resistance modified asphalt is prepared from coal asphalt, a modifying agent, a plasticizer, a viscosity reducer, a stabilizing agent and an activating agent, wherein the softening point range of the coal asphalt is 102 to 110 DEG C, the coking value range is 59.20 to 62.50 percent and the content range of beta resin is 19.50 to 22.35 percent. According to the weather-resistance modifiedasphalt provided by the invention, a manner of adding the modifying agent, the plasticizer, the viscosity reducer, the stabilizing agent and the activating agent into the coal asphalt is adopted so that the aim of preparing the weather-resistance modified asphalt is realized. The preparation technology is simple and effective and the obtained modified asphalt has the advantages of good weather resistance and good comprehensive performance under various utilization environments.

Description

Technical field [0001] The invention belongs to the technical field of asphalt preparation, and in particular relates to a weather-resistant improved asphalt and its preparation process and application. Background technique [0002] The traditional SBS modified bitumen refers to a kind of modified bitumen obtained by mixing SBS copolymer and ordinary bitumen. Generally, it has the advantages of strong compression resistance, anti-stripping ability, and overall durability. On the other hand, the existing modified asphalt is insufficient in terms of weather resistance, which greatly affects its use effect, so there is an urgent need for an improved asphalt with good weather resistance in the market. [0003] The Chinese invention patent with the patent publication number CN101423765A and the publication date of 2009.05.06 discloses a durable asphalt and a preparation method thereof. , Including the following steps: 1) 1-7 parts by mass of coal and 9-3 parts by mass of residual oil a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K5/09C08K5/1539
CPCC08L95/00C08L53/02C08K5/09C08K5/1539
Inventor 鲁利勇丁忠良莫国军朱军黄德平宋霞萍
Owner ZHEJIANG QIAOXING CONSTR GRP
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