Fluorine Resin Surface Modification via UV Radical Generation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for surface modification of fluorine resins, such as plasma processing and vacuum ultraviolet irradiation, pose risks of damaging objects and equipment, causing corrosion, and posing health hazards due to the use of reactive gases, and require large-scale devices.
Innovation Solution
A surface modification method involving the irradiation of an organic compound containing an oxygen atom with ultraviolet light of 205 nm or less to generate radicals, which are then brought into contact with the fluorine resin surface to form a hydrophilized layer, thereby enhancing the surface's affinity with water without using reactive gases or large equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If plasma processing is used to hydrophilize the surface of fluorine resin, then the surface wettability is improved, but the object to be processed and processing device are electrically damaged
Solution Approach 1:
The patent introduces an intermediary substance (organic compound containing oxygen atom) that mediates between the ultraviolet light and the fluorine resin surface. The organic compound absorbs the ultraviolet light and generates radicals that selectively react with the fluorine resin surface to form hydrophilic groups, avoiding direct plasma processing that causes electrical damage
Solution Approach 2:
The patent replaces the plasma processing system (which uses electrical discharge and reactive ions) with a photolytic system using ultraviolet light and organic compounds. This substitution eliminates the electrical damage mechanism while achieving the same surface modification effect through chemical radical reactions
2Illumination intensity
If vacuum ultraviolet irradiation with reactive gases is used to form functional groups on fluorine resin surface, then the surface hydrophilicity is improved, but corrosion of processing device and pipes occurs
Solution Approach 1:
The patent uses an organic compound containing oxygen atom as an intermediary that absorbs ultraviolet light and generates radicals. These radicals react with the fluorine resin surface to form hydrophilic functional groups without requiring reactive gases that would cause corrosion of processing devices and pipes
3Manufacturing precision
If reactive gases are used in surface modification process, then the surface functional groups are formed effectively, but leakage of reactive gas harmfully impacts human body
Solution Approach 1:
The patent employs an organic compound containing oxygen atom as a safe intermediary substance. This compound absorbs ultraviolet light and generates radicals that effectively modify the fluorine resin surface without requiring reactive gases, thereby eliminating health hazards associated with gas leakage while maintaining surface functional group formation
Solution Approach 2:
The patent uses readily available organic compounds (such as alcohols, ketones, aldehydes, or carboxylic acids) as the radical source. These are safe, inexpensive, and easily disposed of materials compared to reactive gases, providing a safer and more practical solution for surface modification
4Illumination intensity
If plasma processing or vacuum ultraviolet irradiation is used for surface modification, then the surface hydrophilicity is improved, but large-scale device is required
Solution Approach 1:
The patent replaces complex plasma processing equipment and vacuum ultraviolet systems with a simpler ultraviolet light source and organic compound system. The ultraviolet light can be generated by common lamps or LEDs, and the organic compound can be applied as a liquid or vapor, dramatically simplifying the equipment requirements and enabling smaller-scale implementations
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 effectively modifies the surface of fluorine resins to improve hydrophilicity, allowing for safer and more efficient bonding or joining with other materials using simple equipment, while minimizing risks to objects, equipment, and human health.
Implementation Method 1
irradiating an organic compound containing an oxygen atom with ultraviolet light having at least an intensity in a wavelength range of 205 nm or less to generate a radical
Implementation Method 2
irradiating an organic compound containing an oxygen atom with ultraviolet light having at least an intensity in a wavelength range of 205 nm or less to generate a radical; The radical generated by the irradiation with the ultraviolet light having at least an intensity in a wavelength range of 205 nm or less is a radical composed of a carbon atom, a hydrogen atom, and an oxygen atom
Data Source
AI summary
Provided is a fluorine resin surface modification method wherein an object to be processed and a processing device and the like are not readily damaged, wherefrom the risk of harmfully impacting a human body is small, and which can be carried out with simple equipment. The fluorine resin surface modification method including the steps of: irradiating an organic compound containing an oxygen atom with ultraviolet light having at least an intensity in a wavelength range of 205 nm or less to generate a radical; and bringing the radical into contact with a surface of a fluorine resin to form a hydrophilized layer on the surface.