White-Light Asphaltene Polymer Composites for Self-Illuminating Pavements
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Asphaltene aggregation in road pavements leads to reduced light emission, hindering their use as a self-illuminating material due to aggregation-caused quenching (ACQ), which limits their optical applications.
Innovation Solution
A method involving mixing asphaltenes with a polymer in a solvent to form a solution, coating the pavement, and evaporating the solvent, resulting in homogeneously dispersed asphaltenes that emit white light upon irradiation, using a polymer matrix to prevent aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If asphaltenes are used as a binder component in road pavements, then the pavement structure is formed, but aggregation-caused quenching reduces light emission
Solution Approach 1:
The patent introduces a polymer matrix as an intermediary substance that disperses asphaltenes and prevents their aggregation. The polymer acts as a mediator between the asphaltene molecules and the pavement matrix, allowing asphaltenes to maintain their light-emitting properties while still contributing to pavement structure. This resolves the contradiction by enabling both structural stability and high light emission intensity through proper spatial separation of asphaltene molecules.
Solution Approach 2:
The patent creates a composite material system consisting of asphaltenes dispersed in a polymer matrix. This composite structure combines the structural benefits of asphaltenes with the light-emitting properties of dispersed asphaltene molecules, while the polymer provides both structural support and prevention of aggregation. The composite material approach allows simultaneous achievement of pavement stability and enhanced light emission.
2Illumination intensity
If asphaltenes are dispersed homogeneously in a polymer matrix, then light emission is enhanced, but the complexity of the composite material increases
Solution Approach 1:
The patent utilizes parameter changes in the polymer matrix, specifically selecting polymers with appropriate molecular weight, functional groups, and crystallinity parameters to optimize asphaltene dispersion. By adjusting these material parameters, the patent achieves homogeneous dispersion and enhanced light emission while maintaining relatively simple composite structure. The parameter optimization approach allows achieving high illumination intensity without proportionally increasing structural complexity.
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 method enables self-illuminating pavements that absorb sunlight or UV light from vehicles to emit white light, reducing electricity and maintenance costs, while maintaining efficient light emission.
Implementation Method 1
asphaltenes absorb UV light and emit a wide range of visible light that may cover the entire visible spectrum, producing a white color emission
Implementation Method 2
coating the pavement with the solution and evaporating the solvent to form a coated pavement
Implementation Method 3
Pi stacking refers to the attractive, noncovalent pi interactions (orbital overlap) between the pi bonds of aromatic rings
Implementation Method 4
these attractive forces may lead to a phenomenon called aggregation caused quenching (ACQ) which greatly impedes their optical applications
Data Source
AI summary
A method of illuminating a pavement including mixing asphaltenes and a polymer in a solvent to form a solution. The method further includes coating the pavement with the solution and evaporating the solvent to form a coated pavement, followed by irradiating the coated pavement. Following the irradiation, the asphaltenes emit light, thereby illuminating the pavement. The asphaltenes are homogeneously dispersed in a polymer matrix in the coated pavement. The polymer has a formula (I) as follows,R1 and R2 are each independently an optionally substituted alkyl group with 1 to 20 carbon atoms or an optionally substituted aryl group with 1 to 20 carbon atoms, and n is 2 to 10000.