Functionalized Polyester Resin Asphalt Emulsion Thermal Stability
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Solution Overview
Problem
Existing asphalt emulsions lack sufficient thermal stability and fuel resistance, which can lead to degradation and damage to asphalt pavements.
Innovation Solution
A method for producing an asphalt emulsion composition that includes a functionalized polyester resin, where the asphalt and polyester are melted and a breaking force is applied to disperse the polyester uniformly within the asphalt, creating a matrix with improved properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resin emulsion such as SBR is used in production of asphalt emulsion to enhance durability, then the durability of pavement surfaces is improved, but the thermal stability and fuel resistance are insufficient
Solution Approach 1:
The patent changes the chemical composition parameters of the polyester resin by introducing specific functional groups (carboxyl, hydroxyl, or isocyanate groups) and controlling the molecular structure (polyester-urethane-polyester structure with specific repeating units). This transforms the polyester from a conventional resin to a functionalized polyester with enhanced thermal stability while maintaining durability benefits
Solution Approach 2:
The patent creates a composite material system combining asphalt binder with functionalized polyester resin in a specific molecular structure (polyester-urethane-polyester). This composite structure integrates the durability advantages of resin emulsions with the thermal stability of functionally modified polymers, resolving the contradiction between durability and thermal stability
2Reliability
If a resin emulsion such as SBR is used in production of asphalt emulsion to enhance durability, then the durability of pavement surfaces is improved, but the fuel resistance is insufficient
Solution Approach 1:
The patent modifies the chemical parameters of the polyester resin by introducing functional groups (carboxyl, hydroxyl, isocyanate) that enhance resistance to fuel-related compounds. The specific molecular structure with polyester-urethane-polyester repeating units provides both durability and improved fuel resistance by changing the chemical interaction properties with fuel compounds
3Ease of manufacture
If polyester is dispersed in asphalt binder using conventional methods, then the manufacturing process is simple, but the thermal stability and fuel resistance are insufficient
Solution Approach 1:
The patent changes the manufacturing parameters by controlling the dispersion process to achieve specific domain sizes (1-100 μm) and distribution uniformity. This optimized dispersion approach maintains manufacturing simplicity while achieving the thermal stability benefits through controlled polyester domain formation within the asphalt binder
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The resulting asphalt emulsion exhibits superior thermal stability and fuel resistance, effectively prolonging the lifespan of asphalt pavements by preventing degradation and damage from fuel-related compounds.
Implementation Method 1
melting the asphalt and the polyester to produce a molten product
Implementation Method 2
applying a breaking force to the molten product
Data Source
AI summary
The present invention relates to: a method for producing an asphalt composition that contains a matrix part containing an asphalt and a domain part containing a polyester, the method including melting the asphalt and the polyester to produce a molten product, and applying a breaking force to the molten product; and an asphalt composition containing a matrix part and a domain part, the matrix part containing an asphalt, the domain part containing a polyester, the domain part having a number average longest diameter of ≤20 μm.