Lightweight Potting Adhesive Composition for Multi-Use Insert Potting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing curable compositions for honeycomb structures in aerospace applications are specialized for single applications, lack versatility, and require complex handling processes, particularly in insert potting, where multiple compositions are used, complicating the process and increasing material and time requirements.
Innovation Solution
A curable lightweight potting adhesive composition precursor comprising two parts: part (A) with a first epoxy curing agent, ammonium salt, tertiary amines, and optionally hollow microspheres, and part (B) with epoxy resin and optionally hollow microspheres, which are mixed to form a curable adhesive suitable for multiple applications, including potting inserts, edge fillers, and adhesives, offering improved handling and reduced complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If specialized compositions are used for each application (adhesive, void filler, edge filler), then application-specific performance is optimized, but product complexity and handling requirements increase
Solution Approach 1:
The patent applies universality by formulating a single curable composition that can serve multiple functions: as adhesive for bonding honeycomb structures, as void filler to fill empty cells, and as edge filler for composite edges. This multi-functional composition eliminates the need for separate specialized products for each application, reducing product complexity while maintaining reliable performance across all uses.
2Reliability
If multiple compositions are used for insert potting, then application requirements are met, but handling complexity and processing time increase
Solution Approach 1:
The curable composition is designed to universally meet insert potting requirements by providing both void filling and adhesive bonding capabilities in a single product. Operators only need to handle one composition type rather than switching between multiple specialized products, significantly simplifying the handling process while ensuring all application requirements are satisfied.
Solution Approach 2:
The composition utilizes parameter changes through its curing process, transitioning from a low-viscosity liquid state (easy to handle and inject) to a high-strength solid state (provides structural support and bonding). This parameter change allows the material to be easily processed during application while delivering the required mechanical performance after curing.
3Reliability
If multiple compositions are used for insert potting, then application requirements are met, but material and time requirements increase
Solution Approach 1:
By using a single multi-functional curable composition that simultaneously provides void filling and adhesive bonding, the patent eliminates the need to apply multiple separate materials in sequence. This reduces both material usage (no intermediate materials needed) and processing time (single application and curing process), thereby improving productivity while meeting all application requirements.
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 composition provides fast curing, low viscosity, and excellent mechanical strength, enabling efficient use as both void filler and adhesive, simplifying the insert potting process and reducing material and time requirements, while maintaining lightweight properties suitable for aerospace and other industries.
Implementation Method 1
a first part (A) comprising (i) at least one first epoxy curing agent; (ii) at least one first curing aid comprising at least one ammonium salt; (iii) at least one second curing aid selected from tertiary amines; a second part (B) comprising (i) at least one epoxy resin
Implementation Method 2
at least one first curing aid comprising at least one ammonium salt; at least one second curing aid selected from tertiary amines
Implementation Method 3
optionally, hollow microspheres
Data Source
AI summary
The present disclosure provides a curable lightweight potting adhesive composition precursor, comprising a first part (A) comprising (i) at least one first epoxy curing agent: (ii) at least one first curing aid comprising at least one ammonium salt: (iii) at least one second curing aid selected from tertiary amines: (iv) optionally, hollow microspheres: a second part (B) comprising (i) at least one epoxy resin; and (ii) optionally, hollow microspheres.