Galvanic Process with Silver Nanoparticles for Antibacterial Coatings
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Solution Overview
Problem
Existing galvanization processes for metals and plastics lack effective and durable antibacterial protection, as solutions like paints and varnishes with nanoparticles have limited durability, and existing nanotechnology applications face challenges in maintaining antibacterial efficiency over time.
Innovation Solution
Incorporating silver nanoparticles with 95%-99.9% purity and a diameter of 30-50 nm into the galvanic process, specifically in the nickel bath, to create a durable antibacterial layer that remains effective through the galvanization process, ensuring prolonged antibacterial action without altering corrosion resistance or surface properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paints and varnishes are applied to impart antibacterial properties, then antibacterial effect is achieved, but durability is reduced
Solution Approach 1:
The patent merges the antibacterial function with the galvanization protective layer by incorporating silver nanoparticles directly into the nickel-phosphate layer during the galvanic process. This integration ensures the antibacterial agent becomes part of the durable galvanized structure rather than being a separate paint or varnish coating, thereby maintaining both antibacterial effectiveness and long-term durability.
Solution Approach 2:
The invention creates a composite material structure where silver nanoparticles are embedded within the nickel-phosphate galvanic layer. This composite approach combines the corrosion resistance and wear resistance of the galvanization with the antibacterial properties of silver, achieving both protective functions in a single integrated layer that maintains durability.
2Duration of action of stationary object
If silver nanoparticles are incorporated into the galvanic process, then prolonged antibacterial action is achieved, but manufacturing complexity increases
Solution Approach 1:
The patent combines multiple functions into a single manufacturing step by incorporating silver nanoparticles into the nickel-phosphate galvanic bath. This integration allows the antibacterial nanoparticles to be deposited simultaneously with the protective galvanic layer, eliminating the need for separate application steps and reducing overall manufacturing complexity despite the added functional requirement.
Solution Approach 2:
The galvanic process itself serves the dual purpose of creating the protective layer and incorporating the antibacterial nanoparticles. The electrochemical deposition mechanism automatically distributes the silver nanoparticles throughout the nickel-phosphate layer during the standard galvanization process, requiring minimal additional manufacturing intervention while achieving prolonged antibacterial action.
3Reliability
If existing nanotechnology solutions are used for antibacterial action, then antibacterial properties are imparted, but durability is limited by the resistance of the coating
Solution Approach 1:
The invention creates a composite galvanic layer where silver nanoparticles are embedded within the nickel-phosphate matrix. This composite structure ensures the antibacterial nanoparticles are protected by and integrated with the durable galvanic coating, allowing both the coating and the antibacterial agents to maintain their properties and durability simultaneously, rather than the nanoparticles being limited by a separate weaker coating.
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 process imparts efficient antibacterial action to galvanized objects, maintaining high resistance to corrosion and wear, with the silver nanoparticles remaining effective indefinitely, even as the chrome layer wears down, and can be applied to various substrates including plastics and metals, ensuring high antibacterial efficacy.
Implementation Method 1
a galvanic process comprising at least one substrate (100), onto which it is applied: (i) at least one nickel bath (10b) that results in at least one nickel layer (101); and (ii) at least one chrome bath (14) that results in at least one chrome layer (102)
Implementation Method 2
the at least one nickel bath (10b) incorporates silver nanoparticles which comprise silver oxide in its pure state with 95%-99.9% purity, and characterised in that the silver nanoparticles have a diameter ranging from 30 to 50 nm
Data Source
Figure 1~2
AI summary
The present invention relates to a galvanic process additivated with nanotechnology, wherein silver nanoparticles are added to the composition of a galvanic bath (10b), capable of forming a nickel layer (101), onto which a chrome layer (102) is deposited to form a material with antibacterial properties, which may be applied in manufacturing the most varied devices or materials.