Amine-Cyclic Siloxane Adduct for Epoxy Compatibility
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Solution Overview
Problem
Siloxane compounds are not miscible in epoxy resin systems, leading to phase separation and defects in cured epoxy products, necessitating the development of siloxane-based compounds that can react with epoxy resins and improve compatibility.
Innovation Solution
The creation of an adduct by reacting an amine compound with a cyclic siloxane compound, where the amine compound contains multiple amine groups and the cyclic siloxane compound has functional groups capable of reacting with the amine groups, forming a composition that enhances compatibility and solubility in epoxy systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If siloxane compounds are incorporated into epoxy resin systems, then flexibility and hydrophobicity are improved, but miscibility deteriorates leading to phase separation
Solution Approach 1:
The patent uses an amine compound as an intermediary to react with the siloxane compound, forming a siloxane-amine adduct. This adduct serves as a mediator that bridges the incompatible siloxane and epoxy resin systems, enabling miscibility while retaining the desired flexibility and hydrophobicity properties of the siloxane.
Solution Approach 2:
The patent changes the chemical state of the siloxane compound by converting it from its original form to a siloxane-amine adduct through chemical reaction. This parameter change in molecular structure and reactivity enables the siloxane to become miscible with the epoxy resin system while maintaining its functional properties.
2Object-affected harmful factors
If siloxane compounds are added to epoxy resin systems, then hydrophobicity is improved, but defect formation increases due to phase separation
Solution Approach 1:
The siloxane-amine adduct acts as an intermediary that prevents phase separation between siloxane and epoxy resin. By forming a chemically bonded intermediate structure, it ensures uniform distribution of siloxane throughout the epoxy matrix, eliminating defects while preserving hydrophobicity.
Solution Approach 2:
The patent creates a composite molecular structure through the siloxane-amine adduct that combines the properties of both siloxane (hydrophobicity) and amine (compatibility with epoxy). This composite approach allows the material to exhibit both desired hydrophobicity and reliability without phase separation defects.
3Strength
If siloxane compounds are incorporated into epoxy systems, then brittleness is reduced, but compatibility deteriorates
Solution Approach 1:
The patent changes the chemical parameters of the siloxane compound by reacting it with amine to form an adduct. This chemical transformation modifies the molecular structure to improve compatibility with epoxy resin systems while maintaining the flexibility-enhancing properties that reduce brittleness.
Solution Approach 2:
The amine-bridged siloxane adduct serves as an intermediary structure that is compatible with both the siloxane and epoxy components. This intermediate structure enables better integration into the epoxy system, improving compatibility while preserving the toughness and flexibility benefits of siloxane incorporation.
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 adduct composition improves the visual appearance and physical properties of epoxy products by ensuring better dispersion and incorporation of cyclic siloxane compounds into the epoxy resin, reducing phase separation and enhancing flexibility and thermal stability.
Implementation Method 1
an adduct produced by reacting an amine compound and a cyclic siloxane compound
Data Source
AI summary
A composition comprises an adduct produced by reacting an amine compound and a cyclic siloxane compound. The amine compound comprises two or more amine groups independently selected from the group consisting of primary amine groups and secondary amine groups. The cyclic siloxane compound comprises two or more first siloxane moieties that contain cyclic ether moieties. An epoxy composition is made by reacting an epoxy resin and the composition comprising the adduct.