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A kind of environmental protection waterproof asphalt and preparation method thereof

An asphalt and environmental protection technology, applied in building insulation materials, buildings, building components, etc., can solve the problems of high softening point increment, high volatility, low penetration retention rate, etc., to improve molecular weight, reduce volatilization, reduce The effect of volatilization loss

Active Publication Date: 2022-07-01
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the waterproof membrane asphalt prepared by this method still has the disadvantages of high volatility, high softening point increase, and low penetration retention rate in the production process of polymer modified asphalt, and its environmental protection and aging resistance need to be improved.

Method used

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  • A kind of environmental protection waterproof asphalt and preparation method thereof
  • A kind of environmental protection waterproof asphalt and preparation method thereof
  • A kind of environmental protection waterproof asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Heat 67.6 parts (mass parts, the same below) of vacuum residue (softening point 45°C, penetration 216dmm at 25°C) to 160°C, add 22 parts of catalytic cracking oil slurry (aromatic content 65%) and reduced third-line oil 8 parts, mixed for 30 minutes at a speed of 2000rmp, then added 0.4 part of phosphomolybdic acid, stirred for 60 minutes, finally added 2 parts of natural zeolite (fineness 1000 mesh), stirred for 15 minutes, to obtain environmentally friendly waterproof asphalt.

Embodiment 2

[0035] Heat 69.4 parts of vacuum residue (softening point 42°C, penetration 238dmm at 25°C) to 155°C, add 20 parts of catalytic cracking oil slurry (aromatic content 60%) and 6 parts of reduced second-line oil, rotate at 2000rmp Mixing for 30min, then adding 0.6 part of phosphomolybdic acid, stirring for 60min, finally adding 4 parts of natural zeolite (fineness 1000 mesh), stirring for 15min, to obtain environmental protection waterproof asphalt.

Embodiment 3

[0043] Heat 73.2 parts of vacuum residue (softening point 41°C, penetration 253dmm at 25°C) to 150°C, add 16 parts of catalytic cracking oil slurry (aromatic content 65%) and 5 parts of reduced third-line oil, and rotate at 2000rmp Mixing for 30min, then adding 0.8 part of phosphomolybdic acid, stirring for 60min, finally adding 5 parts of natural zeolite (fineness 1000 mesh), stirring for 15min, to obtain environmentally friendly waterproof asphalt.

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Abstract

Provided are an environment-friendly waterproof asphalt and a preparation method thereof. The environmentally friendly waterproof asphalt is prepared by using vacuum residue oil, catalytic cracking oil slurry, reduced-line oil, catalyst and adsorbent as raw materials; the parts by mass of each raw material are: vacuum residual oil 60-80 parts, catalytic cracking oil slurry 15-25 parts, 5-10 parts of thread reduction oil, 0.3-1.0 parts of catalyst, and 1-5 parts of adsorbent; wherein, the catalyst is phosphomolybdic acid; and the adsorbent is natural zeolite. The environmentally friendly waterproof asphalt can endow the SBS modified asphalt with better high temperature heat resistance and low temperature crack resistance, and can improve the anti-aging performance of the waterproof material.

Description

technical field [0001] The invention belongs to the field of waterproof materials, and in particular relates to an environmentally friendly waterproof asphalt and a preparation method thereof. Background technique [0002] Polymer-modified bitumen waterproofing materials have been widely used in industrial and civil buildings due to their excellent high and low temperature properties. Asphalt is the most important raw material for the production of polymer-modified asphalt waterproofing materials. At present, my country's waterproof material manufacturers mainly use No. 70 or No. 90 road asphalt as raw materials, and then add a certain amount of soft components (engine oil, rubber softening oil, thread reduction oil, etc.) to blend and use. Mixing road asphalt and soft components into waterproof asphalt is not only expensive, but also the soft components are volatile in the production process of polymer-modified asphalt, which will pollute the environment and reduce the agi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L91/00C08K7/26
CPCC08L95/00C08L91/00C08K7/26
Inventor 郑贵涛毛三鹏钱军余剑英郝亚苹黄宏海蒋方坤
Owner PETROCHINA CO LTD
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