Electrical Debonding Adhesive Sheet Corrosion Protection
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Solution Overview
Problem
The existing electrical debonding type adhesive sheets face issues with corrosion of the conductive layer at the electrode contact portion, which prevents the application of voltage and subsequent debonding, leading to ineffective electrical debonding.
Innovation Solution
The adhesive sheet features a substrate with a conductive layer covered by a first and second adhesive layer, where the conductive layer is not exposed on the electrode contact portion, preventing corrosion and allowing for effective electrical debonding by applying voltage through a penetrating electrode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the conductive layer is exposed at the electrode contact portion to allow electrode contact, then electrical debonding can be performed, but the conductive layer corrodes when contacting outside air
Solution Approach 1:
A resin layer is introduced as an intermediary substance between the conductive layer and the outside air. This resin layer covers the conductive layer to prevent corrosion while still allowing the electrode to contact and apply voltage to the conductive layer through the resin, thus resolving the contradiction between preventing corrosion and enabling electrical contact
Solution Approach 2:
A thin resin coating is applied over the conductive layer at the electrode contact portion. This thin film provides corrosion protection while maintaining electrical conductivity, allowing the electrode to function properly without exposing the conductive layer to corrosive environmental factors
2Reliability
If the conductive layer is covered to prevent corrosion, then corrosion resistance improves, but electrode contact and voltage application become difficult
Solution Approach 1:
The resin layer serves as a mediator that simultaneously provides corrosion protection and maintains electrical contact. It allows the electrode to penetrate through or contact the covered conductive layer, ensuring both protection and operational functionality
Solution Approach 2:
The resin layer's electrical properties are optimized to allow sufficient voltage transmission. By selecting appropriate resin materials with suitable electrical conductivity parameters, the system achieves both corrosion protection and effective electrical debonding capability
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
This configuration suppresses corrosion of the conductive layer and ensures good electrical debonding properties, enabling reliable separation of joined bodies.
Implementation Method 1
a substrate for voltage application comprising a conductive layer; a first adhesive layer comprising an electrically debondable adhesive, the first adhesive layer being formed on the conductive layer of the substrate for voltage application
Implementation Method 2
an electrical debonding type adhesive sheet which includes an electrical debonding type adhesive layer constituted of an electrically debondable adhesive composition and which undergoes debonding upon voltage application to the adhesive layer
Data Source
AI summary
The present invention relates to an electrical debonding type adhesive sheet, including a substrate for voltage application having a conductive layer, a first adhesive layer including an electrically debondable adhesive, the first adhesive layer being formed on the conductive layer of the substrate for voltage application, and a second adhesive layer formed on a surface of the substrate for voltage application opposite to the first adhesive layer, in which the electrical debonding type adhesive sheet has, on at least one surface of the electrical debonding type adhesive sheet, an electrode contact portion, which is a portion to which an adherend is not attached, and a surface of the electrode contact portion to which the adherend is not attached has a portion where the conductive layer is not exposed in at least a part of the surface of the electrode contact portion.