Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

Active Publication Date: 2022-06-10
HARBIN INST OF TECH
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently widely used epoxy asphalt is irreversible after the resin phase is cured, so it is difficult to effectively recycle, or the epoxy asphalt mixture is used as aggregate after milling, and it is difficult to realize the high-performance added value of the resin bonded material. use

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] A method for preparing recyclable epoxy asphalt, comprising the following steps:

[0019] Step 1: Take 75-90 parts by mass of base asphalt and heat it to a flowing state, add 50-70 parts of maleic anhydride and 0.1-0.5 parts of 2,4,7,9-tetramethyl-5-decyne- 4,7-diol, after stirring evenly, react with the base asphalt at the target conversion rate of maleic anhydride of 30% at 110-150 ° C to obtain component A, wherein maleic anhydride is used as a curing agent, 2,4 ,7,9-tetramethyl-5-decyne-4,7-diol as defoamer;

[0020] Step 2: Mix 90-110 parts of furan-containing bifunctional epoxy oligomers with 2-10 parts of N,N-dimethylbenzylamine according to parts by mass to obtain component B, wherein the furan-containing bifunctional ring Oxygen oligomers should be epoxy oligomers with low viscosity, the viscosity range should be controlled within 5-500mPa·s, and N,N-dimethylbenzylamine is used as accelerator;

[0021] Step 3: take 140-160 parts of the A component and 90-120 ...

Embodiment 1

[0031] Example 1 (preparation method)

[0032] Step 1: Take 75 parts by mass of 90# base asphalt and heat it in an oven at 150°C for 2 hours to obtain a fluid base asphalt, add 50 parts of maleic anhydride and 0.1 part of 2,4,7,9-tetramethyl -5-decyne-4,7-diol was stirred for 3 minutes at a temperature of 120 °C and a stirring speed of 3000 r / min to make it uniform, and then at 110 °C with a conversion rate of 30% of maleic anhydride, the target and The base asphalt reacts to obtain A component;

[0033] Step 2: Mix 90 parts of furan bifunctional epoxy oligomers with 2 parts of N,N-dimethylbenzylamine according to parts by mass to obtain component B;

[0034] Step 3: take 140 parts of the A component and 90 parts of the B component according to parts by mass;

[0035] Step 4: Preheat component B in a 60°C oven. When component A is cooled to 60°C, mix component A and component B, and stir at a temperature of 60°C and a stirring speed of 3000 r / min. 1min to obtain a blend;

...

Embodiment 2

[0037] Example 2 (preparation method)

[0038] Step 1: Take 80 parts by mass of 90# base asphalt and heat it in an oven at 150°C for 2 hours to obtain a fluid base asphalt, add 65 parts of maleic anhydride and 0.2 parts of 2,4,7,9-tetramethyl -5-decyne-4,7-diol was stirred for 3 minutes at a temperature of 120 °C and a stirring speed of 3000 r / min to make it uniform, and then at 120 °C with a conversion rate of 30% of maleic anhydride, the target and The base asphalt reacts to obtain A component;

[0039] Step 2: Mix 100 parts of furan bifunctional epoxy oligomers with 5 parts of N,N-dimethylbenzylamine according to parts by mass to obtain component B;

[0040] Step 3: Take 145.5 parts of the A component and 105 parts of the B component according to parts by mass;

[0041] Step 4: Preheat component B in a 70°C oven. When component A is cooled to 70°C, mix component A and component B, and stir at a temperature of 70°C and a stirring speed of 3000 r / min. 1min to obtain a blen...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
viscosityaaaaaaaaaa
Login to View More

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.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L63/00C08G59/42
CPCC08L95/00C08G59/4207C08L63/00
Inventor 易军艳周雯怡裴忠实冯德成
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com