Cured Resin Formation Through Cooling-Controlled UV Irradiation
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Solution Overview
Problem
The formation of shaped objects using ultraviolet curable resin is challenged by significant temperature increases and warping due to high reaction heat and differences in thermal expansion coefficients between the resin and the base, leading to reduced shaping accuracy.
Innovation Solution
Irradiate the ultraviolet curable resin while cooling the base to maintain a controlled temperature difference within a set range, and if necessary, divide the irradiation into multiple steps to manage thermal expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If ultraviolet curable resin is irradiated with ultraviolet rays to form shaped objects, then the resin can be cured and shaped objects can be formed, but the temperature of the resin increases significantly causing warping and reduced shaping accuracy
Solution Approach 1:
The base is cooled in advance before ultraviolet irradiation begins, and cooling continues during the irradiation process. This preliminary and continuous cooling action prevents excessive temperature rise that would cause warping, thereby maintaining shaping accuracy while still achieving complete resin curing.
Solution Approach 2:
The temperature parameter of the base is actively controlled and changed during the curing process. By adjusting the base temperature through cooling, the resin temperature is kept within an optimal range that prevents warping while allowing complete polymerization, thus resolving the contradiction between curing completeness and shaping accuracy.
2Manufacturing precision
If the resin is cooled to suppress temperature increase, then shaping accuracy is improved, but the temperature difference between resin and base increases causing thermal expansion mismatch
Solution Approach 1:
The base temperature is dynamically adjusted during the curing process. By controlling the base temperature to be within a specific range (5°C to 70°C lower than resin temperature, but not excessively low), the patent achieves both warping suppression and thermal expansion compatibility, maintaining both shaping accuracy and compositional stability.
Solution Approach 2:
The cooling system operates with feedback control based on the resin temperature and curing progress. The base cooling is adjusted to maintain an optimal temperature difference that prevents warping while avoiding excessive thermal expansion mismatch, thus balancing both competing requirements.
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 approach suppresses temperature increases and warping, ensuring accurate shaping of the resin layers by aligning thermal expansion coefficients, thereby improving the precision and stability of the formed objects.
Implementation Method 1
irradiate the ultraviolet curable resin with ultraviolet rays while the ultraviolet curable resin is cooled
Implementation Method 2
the ultraviolet curable resin is irradiated with ultraviolet rays while the ultraviolet curable resin is cooled
Data Source
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AI summary
A cured resin formation method including an applying step of applying an ultraviolet curable resin on a base; and a curing step of curing the ultraviolet curable resin by irradiating the ultraviolet curable resin applied in the applying step with ultraviolet rays, in which in the curing step, the ultraviolet curable resin is irradiated with ultraviolet rays while cooling the ultraviolet curable resin, so that a difference between an ordinary temperature of the ultraviolet curable resin and a temperature of the ultraviolet curable resin when irradiated with ultraviolet rays is within a set temperature difference set in advance.