Antibacterial Filter Resin Composition With Controlled Silver Release
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Solution Overview
Problem
Existing antibacterial filters face issues with reduced yarn elongation and production yield due to chemical reactions between antibacterial agents and resin, and conventional antibacterial agents release excessive silver, posing health and ecological risks.
Innovation Solution
A resin composition for antibacterial filters incorporating an antibacterial glass composition with controlled components, including SiO2, B2O3, P2O5, Na2O, K2O, CaO, MgO, WO3, ZnO, and SnO, along with a silane coupling agent, to enhance antibacterial activity while maintaining resin properties and preventing silver release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an antibacterial agent is applied to the filter to suppress bacterial growth, then antibacterial performance is improved, but the chemical reaction between the antibacterial agent and resin damages the polymer chain, reducing yarn elongation and production yield
Solution Approach 1:
The patent uses silane-modified glass beads as an intermediary carrier for the antibacterial agent (silver ions). The glass beads with silane modification on their surface act as a mediator that holds the antibacterial agent and releases it slowly, preventing direct contact between the antibacterial agent and the resin matrix, thus avoiding chemical reactions that would damage the polymer chain while still providing effective antibacterial protection
Solution Approach 2:
The patent changes the physical and chemical parameters of the glass beads by applying silane modification to their surface. This modification alters the surface properties of the glass beads, enabling them to bond with both the resin matrix and the antibacterial agent (silver ions), creating a stable composite structure that maintains resin elongation while providing controlled antibacterial activity
2Reliability
If silver is used as the antibacterial agent to ensure broad-spectrum antibacterial activity, then antibacterial effectiveness is improved, but a large amount of silver is released, causing harm to the human body and ecosystem
Solution Approach 1:
The silane-modified glass beads serve as an intermediary carrier that binds silver ions and controls their release. The glass beads matrix and silane modification create a controlled release mechanism that prevents excessive silver release while maintaining effective antibacterial concentrations, thus resolving the contradiction between antibacterial effectiveness and harmful silver release
Solution Approach 2:
The patent implements continuous controlled release of silver ions from the silane-modified glass beads throughout the service life of the filter. This continuous release mechanism ensures sustained antibacterial effectiveness while maintaining release rates within safe limits, preventing both insufficient antibacterial action and excessive harmful release
3Reliability
If the content of antibacterial agent is increased to enhance antibacterial activity, then antibacterial performance is improved, but the chemical reaction with resin increases, further reducing yarn elongation and causing more frequent yarn breaks
Solution Approach 1:
The silane-modified glass beads act as an intermediary that can accommodate higher loads of antibacterial agent without causing proportional increases in harmful chemical reactions with the resin. The glass beads matrix isolates the antibacterial agent from direct contact with the resin, allowing increased antibacterial content while maintaining yarn elongation and reducing production yield loss
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 long-lasting antibacterial activity against bacteria like E. coli and Staphylococcus aureus, improves yarn elongation, and reduces silver release, ensuring high thermal stability and production yield without altering the manufacturing process.
Implementation Method 1
the antibacterial glass composition includes: antibacterial glass powders; and a silane coupling agent having a cationic functional group
Implementation Method 2
the antibacterial glass composition includes: antibacterial glass powders; and a silane coupling agent having a cationic functional group, wherein the antibacterial glass powders contain: 26 to 50 wt % of SiO2; 0.5 to 4 wt % of at least one of B2O3 and P2O5; 15 to 27 wt % of both of Na2O and K2O; 3 to 20 wt % of at least one of CaO, MgO, and WO3; and 22 to 44 wt % of at least one of ZnO and SnO
Data Source
AI summary
A resin composition for an antibacterial filter improves air hygiene problems by suppressing the propagation of bacteria in a filter applied to home appliances such as an air conditioner, a humidifier, or an air purifier. Particularly, the resin composition for an antibacterial filter, according to certain examples, comprises an antibacterial glass composition and a resin for a filter, and in particular, by controlling the component and amount of the antimicrobial glass composition, the antibacterial activity is improved, and the physical properties of the resin are improved.