Oxygen-Enriched UV Resin Coating for Optical Fiber Strength
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Solution Overview
Problem
The manufacturing process of optical fibers using specific resin compositions is complex and requires additional steps, making it challenging to improve fiber strength effectively.
Innovation Solution
Increasing the dissolved oxygen concentration in an ultraviolet ray curable resin composition and applying it to the glass fiber, followed by curing with UV radiation to form a coating resin layer, which enhances the optical fiber's strength without relying on specific resin compositions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a coating resin layer is formed using conventional ultraviolet ray curable resin composition, then the optical fiber can be manufactured, but the strength of the optical fiber is insufficient
Solution Approach 1:
The patent changes the chemical composition parameters of the ultraviolet ray curable resin composition by incorporating specific compounds (acrylate monomers with carboxyl groups, silane-modified polyesters, etc.) to achieve both high fiber strength and adequate curing degree. The resin composition parameters are optimized to balance mechanical properties with curability.
Solution Approach 2:
The patent uses a composite resin system combining multiple components: acrylate monomers, silane-modified polyesters, photopolymerization initiators, and optional fillers. This composite material approach allows simultaneous achievement of enhanced fiber strength through the coating layer and sufficient curing through the multi-component formulation.
2Reliability
If the curing degree of the coating resin layer is increased to prevent peeling, then the coating adhesion is improved, but the fiber strength enhancement is reduced
Solution Approach 1:
The patent adjusts the resin composition parameters including the ratio of acrylate monomers to silane-modified polyesters, the type of photopolymerization initiator, and the dissolved oxygen concentration to achieve an optimal balance where the coating cures sufficiently for adhesion while maintaining the mechanical strength enhancement effect.
Solution Approach 2:
The patent utilizes dissolved oxygen in the resin composition to enhance the strength of the optical fiber. The oxygen acts as a strengthening agent during the curing process, allowing the coating to provide both adhesion and strength enhancement simultaneously.
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 method improves the strength of optical fibers by forming a robust coating resin layer with increased dissolved oxygen, achieving enhanced mechanical properties without the complexity of specific resin compositions, while maintaining a suitable curing degree to prevent peeling or rupture during winding.
Implementation Method 1
a step of curing the ultraviolet ray curable resin composition by irradiating the ultraviolet ray curable resin composition that is applied onto the glass fiber with an ultraviolet ray
Data Source
AI summary
A method for manufacturing an optical fiber is a method for manufacturing an optical fiber including a glass fiber, and a coating resin layer that coats the glass fiber by being in contact with the glass fiber. The method includes a step of increasing a dissolved oxygen concentration in an ultraviolet ray curable resin composition, a step of applying the ultraviolet ray curable resin composition, in which the dissolved oxygen concentration is increased, onto the glass fiber, and a step of curing the ultraviolet ray curable resin composition by irradiating the ultraviolet ray curable resin composition that is applied onto the glass fiber with an ultraviolet ray.