Preparation and recovery method of recyclable epoxy asphalt

A technology of epoxy asphalt and recovery method, which is applied in the direction of building components, building insulation materials, construction, etc., can solve the problems of high-performance resin bonded materials, difficult to add value, difficult to recycle, etc., and achieve the goal of improving temperature sensitivity and softening point Effect
CN113801490BActive Publication Date: 2022-06-10HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2022-06-10
Patent Text Reader

Abstract

The invention discloses a method for preparing and recovering recyclable epoxy asphalt, and relates to a method for preparing and recovering epoxy asphalt. 75-90 parts of base asphalt is heated to a fluid state, and 50-70 parts of maleic anhydride and 0.1-0.5 parts of 2,4,7,9-tetramethyl-5-decyne-4,7-diol are added to react to obtain Component A; mix 90-110 parts of furan-containing difunctional epoxy oligomer with 2-10 parts of N,N-dimethylbenzylamine to obtain component B; take 140-160 parts of A-component and 90-120 parts B component; B component is preheated at 60-80°C and stirred evenly when A component is cooled to the same temperature; the blend is solidified to obtain recyclable epoxy asphalt. The epoxy asphalt at the end of the use period is heated to a fluid state at 120°C; add regenerant and stir thoroughly; recure at 70°C for 24 hours to obtain recycled epoxy asphalt. Based on the reversible principle of dynamic covalent bonds, an epoxy asphalt that can be recycled based on the temperature regulation mechanism was prepared.
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Description

technical field

[0001] The invention relates to a method for preparing and recycling epoxy asphalt, in particular to a method for preparing and recycling recyclable epoxy asphalt, and belongs to the technical field of road and bridge engineering. Background technique

[0002] With the development of science, technology and economy, my country's highway and bridge construction has entered the world's first echelon. The completion of a series of long-span bridges, such as the Hong Kong-Zhuhai-Macao Bridge, the China-DPRK Yalu River Bridge, and the Second Nanjing Yangtze River Bridge, has greatly enhanced social and economic vitality and promoted the circulation of innovative elements.

[0003] Because of its excellent strength and mechanical properties, epoxy asphalt is widely used in bridge deck pavement including the above-mentioned long-span bridges. Other engineering scenarios with special performance requirements. It is foreseeable that the use of epoxy asphalt will inc...

Claims

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