Temperature-Sensitive Nano Silver Coating for Controlled Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing silver antibacterial coatings have low silver utilization rates and antibacterial efficiency, necessitating the development of a more effective and controlled release system.
Innovation Solution
A temperature-sensitive nano-silver controlled release antibacterial coating composite is created using nanometer mesoporous SiO2 modified with poly N-isopropyl acrylamide, which absorbs nano-silver and controls its release based on temperature, allowing for 'on-off' antibacterial performance adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional silver antibacterial coating is used, then antibacterial function is provided, but silver utilization rate is low and antibacterial efficiency is insufficient
Solution Approach 1:
The patent employs mesoporous SiO2 particles with controlled pore structures to load and control the release of silver ions. The porous structure provides high surface area and controlled diffusion pathways, enabling sustained release of silver ions at optimal concentrations, thereby improving antibacterial efficiency while reducing overall silver content required in the coating.
Solution Approach 2:
The patent utilizes temperature-responsive polymer coatings that change their physical properties (such as swelling or collapsing) in response to temperature changes. This allows control over the release rate of silver ions from the mesoporous particles, enabling the coating to adjust silver ion release dynamically based on environmental conditions, thus optimizing silver utilization and antibacterial performance.
2Reliability
If controlled release system is implemented, then antibacterial efficiency is improved, but coating structure complexity increases
Solution Approach 1:
The patent creates a composite coating system integrating mesoporous SiO2 particles, temperature-responsive polymers, and silver ions. This multi-component composite structure combines the advantages of each material: mesoporous SiO2 provides structured silver ion reservoirs, temperature-responsive polymers provide stimulus-responsive release control, and silver ions provide antibacterial activity. The synergistic combination achieves enhanced antibacterial efficiency without requiring overly complex individual components.
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 coating exhibits excellent antibacterial performance, is non-toxic, environmentally friendly, and maintains stability and adhesion, with controlled silver release enhancing antibacterial efficiency and durability.
Implementation Method 1
temperature-sensitive nano-silver controlled release antibacterial coating composite comprising... temperature-sensitive nano-silver controlled release antibacterial agent... which absorbs nano-silver and controls its release based on temperature
Implementation Method 2
nanometer mesoporous SiO2 modified by poly N-isopropyl acrylamide adsorbing nano silver
Data Source
AI summary
This present invention discloses a temperature-sensitive nano-silver controlled release antibacterial coating composite, which is comprises: water, acrylic, polyurethane resin, temperature-sensitive nano-silver controlled release antibacterial agent, dispersant, curing agent, defoamer, filming additive and leveling agent. By adsorbing nano silver particles into the pores of mesoporous SiO2 modified by poly N-isopropyl acrylamide, we successfully prepared a temperature-sensitive nano-silver controlled release antibacterial agent. By adding the prepared agent to the conventional coating composite, we achieved “on-off” control of the antibacterial properties of coating composite. Through the control of temperature, the release of nano-silver in the mesoporous nano-silica of the coating film layer is controlled. This control method is not only to protect the nano-silver, but also to adjust the strength of the anti-bacterial properties according to the actual demands and improve the use-efficiency of nano silver particles. This invention is in line with the new concept of “Intelligent Age” in the 21st century.