Insulated Conductive Element Primer Adhesion
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Solution Overview
Problem
Existing insulated electrically conductive elements face challenges in achieving strong adhesion between the outer insulating and inner conductive elements, particularly with synthetic materials on metal surfaces, leading to difficulties in maintaining the insulation in place.
Innovation Solution
A primer is applied to the inner electrically conductive element to form a chemical bond, enabling a firm adhesion with both the metal surface and the outer insulating element, using bifunctional molecules that react with hydroxyl or anhydride groups and enhance wettability, ensuring a strong and reliable bond.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the outer insulating element is made of synthetic material on metal surface, then the adhesion is slightly weak due to surface properties, but using plasma or corona treatment increases surface energy, yet the adhesion is still not firm enough to prevent detachment
Solution Approach 1:
A primer layer is introduced as an intermediary between the metal conductor and the synthetic insulating material. The primer contains bifunctional molecules that chemically bond to the metal surface (e.g., forming compounds with copper) and also provide bonding groups for the insulating material, thereby creating strong adhesion without requiring complex plasma or corona treatments.
Solution Approach 2:
The chemical composition and surface properties are modified by applying a primer layer with specific functional groups. The primer changes the surface energy and chemical reactivity parameters, enabling strong chemical bonding to both the metal substrate and the insulating material, thus resolving the adhesion problem without complex manufacturing processes.
2Strength
If plasma or corona treatment is applied to increase surface energy, then adhesion is improved, but the treatment is complex and does not achieve firm enough bonding to prevent stripping
Solution Approach 1:
The primer acts as a mediating layer that simplifies the manufacturing process by providing chemical bonding capability directly. Instead of requiring complex plasma or corona treatment equipment and processes, the primer can be applied through simpler coating methods, reducing device and process complexity while achieving firm bonding.
Solution Approach 2:
The physical/chemical surface modification processes (plasma, corona) are replaced by a chemical coating approach using the primer. This substitution eliminates the need for complex treatment equipment and processes, replacing them with a more straightforward coating application that achieves the same or better adhesion results.
3Device complexity
If the outer insulating element is applied directly to the metal surface, then the structure is simple, but the adhesion is insufficient and stripping is possible
Solution Approach 1:
The primer layer serves as a thin intermediary that adds minimal structural complexity while dramatically improving adhesion reliability. The bifunctional molecules in the primer create chemical bonds with both the metal surface and the insulating material, ensuring reliable bonding without significant increases in structural complexity.
Solution Approach 2:
The structure becomes a composite system with three layers: metal conductor, primer layer, and insulating material. This composite structure combines the advantages of each layer, with the primer providing chemical bonding capability that neither the metal nor the insulating material alone can provide, thereby improving reliability while maintaining reasonable simplicity.
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 primer effectively prevents the removal of the outer insulating element from the inner conductive element, providing a durable and secure connection that maintains the insulation without damaging the surface, suitable for various applications and materials.
Implementation Method 1
the primer has been firmly bonded with the surface of the at least one inner electrically conductive element by reason of chemical bonding. This means that the primer forms a chemical compound with at least one constituent part that has been provided in the region of the surface of the at least one inner electrically conductive element
Implementation Method 2
The mode of action of the primer is based on the increase in the wettability of the substrate surfaces and also on the possibility of entering into chemical or physical linkages
Data Source
AI summary
An insulated electrically conductive element, including at least one inner electrically conductive element and at least one outer insulating element, and to a method for producing such an insulated electrically conductive element.