Bio-Based Epoxy Composites with Aromatic Triepoxy for Heat Resistance
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Solution Overview
Problem
Current bio-based epoxy compositions, particularly those derived from fatty acids and triglycerides, face limitations in terms of reactivity, mechanical properties, heat resistance, and adhesion to substrates, which are superior to those of BPA-based epoxies.
Innovation Solution
The development of epoxy compositions that include a fatty acid epoxy derived from unsaturated fatty acids, an aromatic non-coplanar triepoxy, and optionally a hyperbranched prepolymer, which together enhance the curing reactivity, mechanical strength, and adhesion properties of the epoxy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If vegetable oil-based epoxies are used as substitutes for BPA epoxy, then sustainability and non-toxicity are improved, but reactivity, mechanical properties, and heat resistance deteriorate
Solution Approach 1:
The patent combines fatty acid epoxy (bio-based component) with aromatic non-coplanar triepoxy (performance-enhancing component) to create a composite epoxy system. This composite approach allows the fatty acid epoxy to provide sustainability and non-toxicity while the aromatic triepoxy compensates for mechanical property deficiencies, achieving a balance between environmental benefits and performance requirements
Solution Approach 2:
The patent modifies the chemical structure parameters of the epoxy system by introducing aromatic non-coplanar triepoxy with specific molecular characteristics (non-coplanar structure, multiple epoxide groups). This structural modification enhances reactivity and mechanical properties while maintaining the bio-based fatty acid epoxy framework, thereby improving strength without sacrificing sustainability
2Object-affected harmful factors
If vegetable oil-based epoxies are used as substitutes for BPA epoxy, then sustainability and non-toxicity are improved, but heat resistance deteriorates
Solution Approach 1:
The composite epoxy system combines the thermal properties of aromatic triepoxy with the bio-based fatty acid epoxy. The aromatic non-coplanar triepoxy component contributes superior heat resistance characteristics that compensate for the lower thermal stability of pure vegetable oil-based epoxies, enabling the composite to meet heat resistance requirements while maintaining sustainability
Solution Approach 2:
The patent changes the thermal parameters of the epoxy system by incorporating aromatic triepoxy with higher glass transition temperature and thermal stability. This parameter modification raises the overall heat resistance of the composite epoxy while preserving the non-toxic and sustainable attributes of the fatty acid epoxy base
3Object-affected harmful factors
If vegetable oil-based epoxies are used as substitutes for BPA epoxy, then sustainability is improved, but adhesion to substrates deteriorates
Solution Approach 1:
The patent creates a composite epoxy system where the aromatic non-coplanar triepoxy component provides enhanced adhesion properties that compensate for the poor substrate bonding of pure fatty acid epoxies. This composite approach maintains the non-toxic and sustainable characteristics while achieving reliable adhesion performance
Solution Approach 2:
The patent modifies the adhesion parameters of the epoxy system by introducing aromatic triepoxy with improved interfacial bonding characteristics. This parameter change enhances the composite's ability to adhere to substrates while preserving the environmental benefits of the bio-based fatty acid epoxy foundation
4Object-affected harmful factors
If high loading levels of fatty acid epoxies are used, then sustainability is improved, but reactivity and mechanical properties deteriorate
Solution Approach 1:
The patent changes the reactivity parameters of the epoxy system by incorporating aromatic non-coplanar triepoxy with high epoxide group density and reactive functionality. This parameter modification compensates for the lower reactivity of fatty acid epoxies, enabling high loading levels of bio-based components while maintaining adequate curing speed and reaction efficiency
Solution Approach 2:
The composite epoxy system combines the high sustainability of fatty acid epoxy with the high reactivity of aromatic triepoxy. This material combination allows the fatty acid epoxy to be used at high concentrations for sustainability while the aromatic triepoxy ensures sufficient reactivity and crosslinking efficiency to maintain mechanical properties
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
These compositions demonstrate improved glass transition temperature, mechanical strength, and adhesion, allowing for high loading levels of fatty acid epoxies, comparable to BPA-based epoxy systems, while maintaining sustainability and safety.
Implementation Method 1
polymerizing the curing mixture by maintaining the curing mixture at a temperature and time sufficient for polymerizing the epoxy composition
Data Source
AI summary
Embodiments of this invention are directed to bio-based epoxy compositions. and method of their preparation and use. Other embodiments are directed to cured bio-based epoxies, and manufactured articles having bio-based epoxy coatings, adhesives, or composites.