Organofunctional Silane Adhesion on Glass Coatings
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Solution Overview
Problem
Existing methods for coating glass substrates fail to achieve strong adhesion of organic coatings, leading to poor durability and ultraviolet protection, as conventional processes require undesirable energy treatments like flame, corona, or plasma to achieve adhesion.
Innovation Solution
A method involving the deposition of a silicon-based inorganic oxide coating on glass, followed by an organofunctional silane application, and then an organic coating, which creates a highly reactive surface for enhanced bonding, eliminating the need for energy treatments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional coating processes are used on glass substrates, then the coating can be applied, but adhesion strength is poor and energy treatments are required
Solution Approach 1:
The patent applies preliminary chemical treatments to the glass substrate surface before coating application. Specifically, it uses silane coupling agents and metal oxide primers that are applied in advance to create a chemically active surface layer that will bond strongly with the subsequent organic coating, eliminating the need for energy-intensive flame or plasma treatments at the coating stage
Solution Approach 2:
The patent introduces intermediary layers between the glass substrate and the organic coating. These intermediaries include metal oxide primers (such as tin oxide or zinc oxide) and silane coupling agents that act as chemical mediators, forming strong bonds with both the glass substrate and the organic coating, thereby achieving strong adhesion without requiring external energy treatment
2Reliability
If conventional coating processes are used on glass substrates, then the coating can be applied, but durability and ultraviolet protection are poor
Solution Approach 1:
The patent employs composite coating structures consisting of multiple functional layers. The composite system includes a glass substrate, metal oxide primer layer, silane coupling agent layer, and organic coating layer. Each layer contributes specific properties: the metal oxide provides UV absorption and chemical stability, the silane provides strong chemical bonding, and the organic coating provides durability and aesthetic properties, collectively achieving both strong adhesion and enhanced durability with UV protection
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
This approach results in significantly improved adhesion strength of organic coatings on glass containers, enhancing durability and ultraviolet protection, with adhesion strength being two to three times greater than conventional surface treatments.
Implementation Method 1
depositing a silicon-based inorganic oxide on an exterior surface of the glass
Implementation Method 2
applying an organofunctional silane to the glass over the inorganic oxide
Data Source
Figure 1~2
AI summary
Methods of manufacturing and coating glass including depositing an inorganic oxide on an exterior surface of the glass, and then applying an organofunctional silane to the glass over the inorganic oxide. The methods also may include applying an organic coating to the glass over the organofunctional silane, and curing the organic coating.