Multicomponent Adhesive for Dissimilar Fabric Peel Strength
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hybrid fibrous composites made from chemically dissimilar materials face challenges in achieving strong bond strength between layers, leading to potential delamination under projectile impact or over time, which is critical in ballistic-resistant applications.
Innovation Solution
A multicomponent adhesive system comprising a dual layer film or a tri-layer film with an adhesion promoter is used to bond dissimilar fibrous layers, where the polymer layers are unified and partially fused, forming a molecular entanglement region to enhance interlayer adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a single polymer adhesive is used to bond dissimilar fibrous layers, then the adhesive system is simple, but the bond strength between chemically dissimilar layers is insufficient
Solution Approach 1:
The adhesive system is segmented into multiple polymer layers, each specifically designed to bond with one type of fibrous layer. The first polymer layer bonds to the first fibrous layer while the second polymer layer bonds to the second fibrous layer, allowing each layer to be optimized for its specific substrate.
Solution Approach 2:
The adhesive system itself is a composite structure comprising multiple polymer layers with different chemical compositions. This composite adhesive combines the advantages of different polymers to achieve strong bonding to both dissimilar fibrous layers simultaneously.
2Reliability
If elastomeric binder polymers with low tensile modulus are used, then ballistic properties are superior, but rigidity of the composite is reduced
Solution Approach 1:
Different regions of the composite structure have different material properties optimized for their specific functions. The elastomeric binder provides local energy absorption for ballistic resistance, while the rigid polymer layers provide local structural support for rigidity.
Solution Approach 2:
The composite combines elastomeric and rigid polymer materials in a layered structure, allowing the material to exhibit both high ballistic resistance from the elastomeric phase and sufficient rigidity from the rigid polymer phases.
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 significantly improves the inter-laminar peel strength between fibrous layers, preventing delamination and enhancing the structural integrity of the composite materials for ballistic-resistant applications.
Implementation Method 1
the polymer layers are unified and at least partially fused together wherein polymer molecules from the first polymer layer are commingled with polymer molecules from the second polymer layer, said commingled molecules forming a molecular entanglement region at the interface of the two polymer layers
Data Source
AI summary
Hybrid fibrous composite materials incorporating at least two different fabric components and a multicomponent adhesive system for adhering the fabric components together. The adhesive system enhances the bond strength between the fabric components, which would otherwise easily delaminate from each other and peel apart. The components of the adhesive system bond strongly to each other as well as to the fabric elements.