Ultrasonic Transducer Adhesive Layer Silane Coupling Agent
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Solution Overview
Problem
Existing ultrasonic transducers face issues with insufficient adhesive strength between acoustic members, leading to peeling during manufacturing processes like dicing and degradation during disinfection and cleaning, which affects the accuracy and reliability of diagnostic images.
Innovation Solution
The use of a silane coupling agent with a specific structure, represented by general formula (1), is applied as an adhesive layer between acoustic members, enhancing the adhesive strength by ensuring sufficient molecular orientation and density, thereby preventing peeling during dicing and disinfection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a silane coupling agent is used to enhance adhesive strength between acoustic members, then adhesive strength is improved, but peeling still occurs during dicing and disinfection processes
Solution Approach 1:
The patent changes the molecular structure parameters of the silane coupling agent by specifying that the organic chain must have 4 or more continuous carbon atoms. This structural parameter change enhances both adhesive strength and peeling resistance simultaneously, resolving the contradiction between initial bond strength and long-term reliability under stress and chemical exposure.
Solution Approach 2:
The patent creates a composite adhesive system combining a specific silane coupling agent with an adhesive formulation. The silane coupling agent acts as a molecular bridge between inorganic acoustic members and organic adhesive, forming a composite interface that resists both mechanical stress during dicing and chemical degradation during disinfection, thereby improving both strength and reliability.
2Strength
If conventional silane coupling agents are used, then adhesive strength is enhanced, but peeling occurs during dicing due to stress on the laminate
Solution Approach 1:
The patent modifies the structural parameters of the silane coupling agent by requiring an organic chain with 4 or more continuous carbon atoms. This parameter change provides sufficient molecular flexibility and bonding capacity to withstand the mechanical stress applied during dicing, preventing peeling while maintaining strong adhesion between acoustic members.
Solution Approach 2:
The silane coupling agent is applied to the adhesive surface before the adhesive is applied and before the dicing process. This preliminary action prepares the surface with enhanced bonding characteristics that will withstand subsequent manufacturing stresses, preventing peeling during dicing by establishing strong bonds in advance.
3Strength
If conventional silane coupling agents are used, then adhesive strength is improved, but peeling occurs during disinfection and cleaning due to chemical infiltration
Solution Approach 1:
The patent changes the chemical structure parameters of the silane coupling agent by specifying an organic chain with 4 or more continuous carbon atoms. This structural modification creates a more chemically stable and hydrophobic interface that resists infiltration by disinfection chemicals, maintaining adhesive strength and preventing peeling during cleaning and disinfection processes.
Solution Approach 2:
The silane coupling agent serves as an intermediary layer between the inorganic acoustic members and the organic adhesive. This intermediary formulation with enhanced molecular structure provides chemical resistance to disinfection solutions, protecting the adhesive bond from degradation while maintaining strong adhesion on both sides.
4Device complexity
If the organic chain of silane coupling agent is short (less than 4 continuous carbon atoms), then the formulation is simpler, but adhesive strength and peeling resistance are insufficient
Solution Approach 1:
The patent establishes a critical threshold parameter for the organic chain length (4 or more continuous carbon atoms) of the silane coupling agent. This parameter change optimizes the balance between molecular complexity and adhesive performance, providing sufficient chain length for strong van der Waals interactions and entanglement while maintaining formulation feasibility and cost-effectiveness.
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 enhanced adhesive strength improves the durability and reliability of ultrasonic transducers by preventing peeling during manufacturing and use, ensuring stable diagnostic performance.
Implementation Method 1
the silane coupling agent has a structure represented by general formula (1)... the adhesive layer comprises a silane coupling agent and an adhesive... enhancing the adhesive strength
Data Source
AI summary
An ultrasonic transducer includes: a laminate in which a plurality of acoustic members is laminated; and an adhesive layer that includes a silane coupling agent and an adhesive, the adhesive layer joining any two of the plurality of acoustic members to each other, wherein the silane coupling agent has a structure represented by general formula (1):wherein R1s each independently represent a methoxy group or an ethoxy group, R2 represents a methoxy group, an ethoxy group, or a hydrogen atom, X represents a linear or branched organic chain having 4 or more continuous carbon atoms, and A represents a reactive functional group.