Atmospheric-Pressure Plasma Polymer Coatings for Easy-Clean Surfaces
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Solution Overview
Problem
Existing methods for creating easily cleanable surfaces on enamel, glass, glass ceramic, or metal domestic articles are energy-intensive, time-consuming, and environmentally detrimental, often requiring masking steps and solvent use.
Innovation Solution
A plasma polymerization process under atmospheric pressure is used to deposit a surface layer on these materials using fluorine and carbon compounds or organosilicon precursors, allowing for a quick, solvent-free, and low-cost coating with optional adhesion-enhancing layers and surface roughening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If liquid phase coating methods are used to reduce surface energy, then the surface becomes easily cleanable, but the process becomes energy-intensive and time-consuming due to high temperature burning in
Solution Approach 1:
The invention transitions from liquid phase coating application to plasma phase deposition. The coating material is applied in liquid form but then converted to plasma state for deposition, eliminating the need for high temperature burning in while achieving the desired low surface energy. This phase transition resolves the contradiction by providing easy cleanability through plasma polymerization without the energy-intensive thermal processing step.
Solution Approach 2:
The invention changes the processing parameters from high temperature (150-400°C) thermal curing to atmospheric pressure plasma conditions. By altering the energy form from thermal to plasma, the process achieves equivalent or superior coating performance with significantly reduced energy consumption and shorter processing time.
2Ease of manufacture
If liquid phase coating methods are used, then the surface can be coated, but additional masking steps are required for selective coating which increases time consumption
Solution Approach 1:
The plasma process enables local coating by directing the plasma jet to specific areas of the substrate. The coating can be applied selectively to desired surfaces without requiring masking, as the plasma energy is concentrated in a controllable jet that only affects the targeted area. This eliminates masking steps and reduces processing time while maintaining coating quality.
3Ease of manufacture
If conventional coating methods are used, then the surface can be coated, but solvents are required which have negative environmental impact
Solution Approach 1:
The invention replaces the solvent-based chemical coating process with a plasma-based physical-chemical deposition process. The coating material is delivered through a plasma jet that deposits the polymer directly onto the substrate surface through plasma polymerization, eliminating the need for solvents entirely. This substitution removes the source of environmental pollution while maintaining effective coating capability.
4Strength
If high temperature burning in is used to cure the coating, then the coating adheres well to the substrate, but the process becomes energy-intensive
Solution Approach 1:
The invention uses plasma phase deposition instead of thermal curing. The plasma jet provides both the deposition mechanism and the activation energy needed for coating formation and adhesion. This phase transition from thermal to plasma processing achieves equivalent adhesion strength without the high energy input required for high temperature burning in.
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 method results in a low-energy, chemically resistant, and non-adhesive surface that is easy to clean, reducing the need for masking and minimizing environmental impact while enabling efficient coating of large areas without solvent use.
Implementation Method 1
a polymer surface layer is deposited with the help of an atmospheric pressure plasma on at least a part of the substrate surface of the domestic article using one or more nozzles and based on one or more precursors
Data Source
AI summary
In a method for applying an easily cleanable surface to a domestic article, a polymer surface layer is deposited by one or more nozzles on at least a part of the surface of the domestic article by plasma polymerization in the presence of an atmospheric pressure plasma based on at least one precursor.