Optical Resin Composition Refractive Index Adjustment Compatibility
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Solution Overview
Problem
Conventional optical resin compositions with fluorine-containing resins and refractive index modifiers suffer from compatibility issues, leading to degraded transparency and the need for refractive index adjustment during high-temperature processing, which challenges the production of optical members with high thermal resistance.
Innovation Solution
An optical resin composition incorporating a fluorine-containing resin and a refractive index modifier, where the refractive index modifier consists of 95% or more of a linear polymer with specific repeating units based on fluorine-containing ethylene-based monomers, ensuring improved compatibility and solubility, allowing for high-temperature processing without transparency degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional refractive index modifier is mixed with fluorine-containing resin, then the refractive index can be adjusted, but compatibility is poor leading to degraded transparency
Solution Approach 1:
The patent changes the molecular weight parameter of the refractive index modifier to a specific range (500-5000) and uses fluorine-containing ethylene-based monomers with specific structures, transforming the physical and chemical properties of the modifier to achieve both transparency and refractive index adjustability
Solution Approach 2:
The patent creates a composite system by combining fluorine-containing resin with specifically designed fluorine-containing oligomers and polymers as refractive index modifiers, where the composite structure ensures compatibility while achieving the desired optical properties
2Temperature
If fluorine-containing resin with high glass transition temperature is used to achieve high thermal resistance, then thermal resistance is improved, but high-temperature processing degrades transparency
Solution Approach 1:
The fluorine-containing oligomer and polymer act as intermediary substances between the high glass transition temperature resin and the processing conditions, providing a buffer that maintains compatibility and transparency during high-temperature processing while preserving the thermal resistance of the base resin
Solution Approach 2:
The patent adjusts the molecular weight and chemical structure parameters of the refractive index modifier to specifically counteract the degradation effects of high-temperature processing, ensuring that transparency is maintained even when processing resins with high glass transition temperatures
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 composition maintains high transparency and thermal resistance, enabling refractive index adjustment within a desired range, even during high-temperature processing, thus addressing compatibility and thermal resistance challenges.
Implementation Method 1
a problem with compatibility between the fluorine-containing resin and the refractive index modifier arises, that is, a problem arises that the refractive index modifier is not uniformly mixed with the fluorine-containing resin
Implementation Method 2
a refractive index distribution is formed by diffusing a refractive index modifier in an optical resin composition in which the refractive index modifier is added to the fluorine-containing resin
Data Source
AI summary
An optical resin composition of the present invention includes fluorine-containing resin and a refractive index modifier. The optical resin composition satisfies the following matter (a) or (b): (a) the refractive index modifier includes 95 mass % or more of a linear polymer (A) including repeating units based on a fluorine-containing ethylene-based monomer such that the number of the repeating units is 5, and a proportion of a content of the linear polymer (A) in the optical resin composition is 1 mass % or more and less than 15 mass %; (b) the refractive index modifier includes 95 mass % or more of a linear polymer (B) including repeating units based on a fluorine-containing ethylene-based monomer such that the number of the repeating units is 6, and a proportion of a content of the linear polymer (B) in the optical resin composition is 1 mass % or more and less than 13 mass %.