Polymer Antiviral Filter Coating for UV and Adhesion Durability
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Solution Overview
Problem
Existing antibacterial and antiviral filters face issues with poor coating durability and UV durability, particularly with materials like PTFE, leading to adhesive strength challenges and vulnerability to ultraviolet rays.
Innovation Solution
A polymer filter with a surface-modified layer formed through ion beam pretreatment, followed by a coating of metal or metal oxide, enhances binding strength and durability, using gases like oxygen, hydrogen, or argon to improve adhesion and UV protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an antibacterial or antiviral material is coated on a fiber or filter material, then the filter gains antibacterial or antiviral function, but the coating durability is poor and the material is easily released
Solution Approach 1:
The patent applies preliminary action by performing ion beam treatment on the filter material surface before coating the antibacterial or antiviral material. This pre-treatment modifies the surface properties of the filter material to enhance subsequent coating adhesion, preventing material release while maintaining the antibacterial or antiviral function.
Solution Approach 2:
The patent changes physical parameters of the filter material surface through ion beam treatment, modifying surface energy, roughness, or chemical composition. These parameter changes create a surface that provides stronger bonding for the antibacterial or antiviral coating, resolving the contradiction between coating durability and functional effectiveness.
2Reliability
If PTFE is used as filter material, then the filter has good chemical resistance and low friction, but adhesive strength with coating is low and coating durability cannot be secured
Solution Approach 1:
The patent applies preliminary ion beam treatment to the PTFE surface before coating. This pre-treatment activates the low-energy PTFE surface by creating surface radicals or modifying surface chemistry, enabling strong adhesion of antibacterial or antiviral coatings while preserving PTFE's inherent chemical resistance and low friction properties.
3Productivity
If a polymer filter is used, then the filter can be manufactured efficiently, but the polymer may be cured by ultraviolet rays and damaged, reducing UV durability
Solution Approach 1:
The patent introduces a coating layer of metal or metal oxide as an intermediary between the polymer filter and the environment. This coating layer serves as a protective barrier that shields the polymer from ultraviolet radiation, preventing UV-induced curing and damage, while allowing the polymer filter to maintain its manufacturing efficiency advantages.
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 provides improved coating durability and UV resistance, maintaining effective antibacterial and antiviral activity against pathogens like Staphylococcus aureus and Klebsiella pneumoniae, and viruses such as COVID-19, while maintaining aesthetic appeal and efficient manufacturing.
Implementation Method 1
a polymer filter which is ion beam pretreated to have a surface-modified layer formed thereon so that a coating layer is bound to a polymer surface
Implementation Method 2
when a polymer filter is used as a material of the antibacterial or antiviral filter, polymer may be cured by ultraviolet rays to be damaged, and thus, a filter having both improved coating durability and improved UV durability is needed
Data Source
AI summary
Provided is an antibacterial or antiviral filter having improved coating durability and UV durability. More particularly, a polymer filter which may express an antibacterial or antiviral function having both improved coating durability of various filter materials and improved UV durability, and a method of manufacturing the same are provided.