Bituminous binder with polymer additives for low-temperature bonding
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Solution Overview
Problem
Conventional oxidized bitumens require high temperatures for effective application, leading to high energy consumption and prolonged coating processes, and existing alternatives do not provide sufficient resistance to tearing and unsticking or ease of implementation for bonding coatings in public works and civil engineering.
Innovation Solution
A bituminous bonding binder comprising a bitumen with an additive of specific formula and an olefin polymer adjuvant, which is heated between 140°C and 200°C to create a mixture with improved bonding properties, reduced viscosity, and enhanced resistance to tearing and unsticking, allowing for application at lower temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional oxidized bitumens are used as bonding binder, then adhesive properties are achieved, but application temperature must be above 200°C leading to high energy consumption
Solution Approach 1:
The invention modifies the chemical composition parameters of the bituminous binder by incorporating specific polymers (SBS, SIS, EVA, SEBS) and additives to change the softening temperature and viscosity characteristics, enabling effective bonding at temperatures below 200°C while maintaining adhesive strength
Solution Approach 2:
The invention creates a composite bituminous material combining traditional oxidized bitumen with synthetic polymers and chemical additives, synergistically improving low-temperature bonding performance while reducing the energy required for application
2Stability of the object's composition
If conventional oxidized bitumens are heated to above 250°C for hot application, then sufficient fluidity is obtained for bonding, but the coating process duration increases
Solution Approach 1:
The polymer additives and chemical modifiers change the rheological parameters of the bitumen, reducing its viscosity at lower temperatures and eliminating the need for prolonged high-temperature heating, thus shortening the coating process duration
3Ease of manufacture
If non-bituminous compositions or elastomer-modified bitumens are used as alternatives, then bonding capability is provided, but resistance to tearing and unsticking is insufficient
Solution Approach 1:
The invention combines oxidized bitumen with specific elastomers (SBS, SIS, EVA, SEBS) and chemical additives to create a composite material that simultaneously provides easy application and superior mechanical strength, including enhanced resistance to tearing and unsticking forces
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 solution achieves effective bonding at lower temperatures, reducing energy consumption and application time while maintaining high bonding performance and cost-effectiveness by combining the additive and olefinic polymer adjuvant, resulting in improved resistance to tearing and unsticking.
Implementation Method 1
A bituminous bonding binder comprising a bitumen with an additive of specific formula and an olefin polymer adjuvant, which is heated between 140°C and 200°C to create a mixture with improved bonding properties
Data Source
AI summary
The present invention relates to a bituminous bonding agent comprising: - a bitumen - at least one additive of general formula (I): Ar1-R-Ar2 (I) where Ar1 and Ar2 independently represent a benzene ring or a system of condensed aromatic rings of 6 to 20 carbon atoms, substituted by at least one hydroxyl group, and R represents a divalent radical optionally substituted, the main chain of which comprises 6 to 20 carbon atoms and at least one amide and/or ester group, the process of preparing this bonding agent, and its applications in the field of civil engineering/building.