Adhesive Compositions with Graphenic Carbon Particles
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Solution Overview
Problem
Current adhesive compositions for bonding substrate materials often lack sufficient bond strength, ease of application, and prolonged pot life, particularly in applications like wind turbine and automotive industries, where they require enhanced mechanical properties and rheological features.
Innovation Solution
Development of one-component (1K) and two-component (2K) adhesive compositions incorporating graphenic carbon particles with low oxygen content, which react chemically to form crosslinked bonds, providing improved tensile modulus, shear thinning ratios, viscosity recovery, and Thixotropic Index, along with the use of epoxy compounds and amine curing agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional adhesive compositions are used, then application is simple, but bond strength and mechanical properties are insufficient
Solution Approach 1:
The patent incorporates graphenic carbon particles into adhesive compositions to create a composite material that combines the bonding properties of traditional adhesives with the mechanical reinforcement of graphenic carbon. This composite structure provides enhanced bond strength and mechanical properties while maintaining the adhesive's applicability.
Solution Approach 2:
The patent modifies the chemical composition parameters of the adhesive by incorporating graphenic carbon particles with specific oxygen content (no more than 2 atomic weight percent). This parameter change enhances the mechanical properties and bond strength of the adhesive system.
2Strength
If adhesive formulations are optimized for bond strength, then mechanical properties improve, but pot life is reduced
Solution Approach 1:
The patent utilizes graphenic carbon particles with controlled oxygen content (no more than 2 atomic weight percent) to modify the chemical reactivity parameters of the adhesive system. This parameter control allows the adhesive to maintain enhanced mechanical properties while extending the pot life through reduced premature curing.
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 compositions demonstrate enhanced mechanical properties and rheological features, such as increased tensile modulus and improved sag resistance, while maintaining ease of application and extended pot life, outperforming traditional adhesives with similar loading levels of graphenic carbon particles or graphite.
Implementation Method 1
graphenic carbon particles having an oxygen content of no more than 2 atomic weight percent
Implementation Method 2
improved shear thinning ratios
Implementation Method 3
improved Thixotropic Index
Data Source
AI summary
Disclosed herein are adhesive compositions comprising (a) a first component; (b) a second component that chemically reacts with said first component; and (c) graphenic carbon particles having an oxygen content of no more than 2 atomic weight percent. Disclosed herein are associated methods for forming the adhesive compositions and applying the adhesive compositions to a substrate to form a bonded substrate.