Photocurable Resin Testing Retainer with Quartz Substrate
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Solution Overview
Problem
Existing testing apparatuses for photocurable resins face challenges in accurately measuring peeling forces due to tilting errors, deflection of glass substrates, and the use of hemispherical pressing jigs with low Young's modulus, which affect reproducibility and data accuracy.
Innovation Solution
A retainer system with a light transmission pressing member and a light irradiation block that allows for precise force measurement between the photocurable resin and the pressing member, using a spherical contact surface and an inert gas atmosphere to enhance data reliability, and a method involving ultraviolet light irradiation and detection of contractile and peeling forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rectangular glass substrates are used in the testing apparatus, then the photocurable resin can be cured between the substrates, but the substrates undergo deflection when force is applied, causing errors in force measurement
Solution Approach 1:
The patent changes the material parameter of the substrate from glass to quartz, which has higher rigidity and resistance to deflection. This parameter change resolves the contradiction by maintaining substrate strength while improving force measurement accuracy through reduced deflection under applied loads.
Solution Approach 2:
The patent introduces a spherical contact surface on the pressing member that contacts the photocurable resin. This curved geometry distributes the applied force more evenly and reduces localized stress concentrations that would cause substrate deflection, thereby improving measurement precision while maintaining the necessary pressing force.
2Use of energy by moving object
If the pressing member contacts the light source or optical transmission line, then light can be delivered to cure the resin, but measurement accuracy is compromised due to interference
Solution Approach 1:
The patent introduces a light irradiation block as an intermediary component between the light source/optical fiber and the pressing member. This block transmits light to cure the photocurable resin while physically separating the measurement system from the optical path, eliminating interference with force measurements while maintaining efficient light delivery for resin curing.
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 improves the accuracy and reliability of force measurements by minimizing tilting errors and substrate deflection, and allows for the evaluation of surface segregation effects, resulting in more precise contractile and peeling force data.
Implementation Method 1
ultraviolet light is irradiated to the photocurable resin through the glass substrate to cure the photocurable resin
Implementation Method 2
a pressing member with light transmission characteristics which is pressed to the photocurable resin
Data Source
AI summary
A retainer for use in measuring a force generated between a photocurable resin and a pressing member by a detector includes: a pressing member that has light transmission characteristics and is pressed to the photocurable resin; and a light irradiation block that is provided between the detector and the pressing member and irradiates light emitted from an external light source onto the pressing member in a state of being not contacting a light source and an optical transmission line including an optical fiber.