Abrasive Film Fabrication via Imidization for Scratch Reduction
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Solution Overview
Problem
Conventional abrasive films are limited in their ability to polish non-flat surfaces and hard materials due to uneven polishing and scratch generation, and they often require excessive abrasive grain usage, leading to increased costs and resource consumption.
Innovation Solution
A method of fabricating an abrasive film by forming a base film with a first layer containing a binder resin, followed by a second layer with abrasive grains, and subjecting both layers to imidization, which aligns abrasive grains in projecting height, reduces scratch occurrence, and concentrates grains near the surface for enhanced polishing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional abrasive films are used for polishing, then polishing can be performed on flat surfaces, but the application is limited to wide area flat surfaces and uniform materials, reducing versatility
Solution Approach 1:
The abrasive film is divided into multiple layers: a base film layer and an abrasive layer. The abrasive layer is further segmented into regions with different abrasive grain concentrations - a first region with higher concentration and a second region with lower concentration. This segmentation allows different regions to perform different functions, expanding application versatility while maintaining polishing quality.
Solution Approach 2:
Different regions of the abrasive film are designed with different local properties. The first region has higher abrasive grain concentration for aggressive material removal, while the second region has lower concentration for fine finishing. This local quality variation enables the single film to handle multiple polishing stages and different material types, improving versatility without sacrificing reliability.
2Quantity of substance
If abrasive grains are uniformly distributed throughout the abrasive layer, then polishing can be performed, but excessive abrasive grain usage increases costs and resource consumption
Solution Approach 1:
The abrasive layer is segmented into a first region with higher abrasive grain concentration and a second region with lower concentration. This segmentation reduces the total quantity of abrasive grains needed compared to uniform distribution, as the lower concentration region suffices for areas requiring less aggressive polishing, thereby reducing costs and resource consumption.
Solution Approach 2:
The abrasive grain concentration is optimized locally - higher where needed for material removal and lower where fine finishing is sufficient. This local optimization reduces overall abrasive grain usage while maintaining manufacturing feasibility through conventional coating processes that can vary composition across the film width.
3Manufacturing precision
If conventional single-layer abrasive films are used, then fabrication is simple, but uneven polishing and scratch generation occur on non-flat surfaces and hard materials
Solution Approach 1:
The abrasive film is segmented into multiple layers with different abrasive grain concentrations. The base film provides structural support while the abrasive layer with its first and second regions delivers differentiated polishing action. This segmentation eliminates uneven polishing and scratch generation on non-flat surfaces by providing appropriate abrasive density for different surface conditions, achieving high manufacturing precision.
Solution Approach 2:
The abrasive film is constructed as a composite structure with a base film and an abrasive layer containing regions of varying abrasive grain concentration. This composite design combines the mechanical strength of the base film with the polishing functionality of the abrasive layer, achieving uniform polishing on complex surfaces while maintaining a manageable film structure.
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 improved polishing rates and reduced abrasive grain usage, allowing for cost savings and expanded application to harder and more complex shapes, while maintaining high holding strength and preventing uneven polishing.
Implementation Method 1
heating the first layer and the second layer for imidization
Data Source
AI summary
A method for fabricating an abrasive firm includes preparing a base film, coating the base film with a first paint which contains no abrasive grain but contains a binder resin, and drying the paint to form a first layer. The method further includes coating the first layer with a second paint which contains the abrasive grains and the binder resin, and drying the paint to form a second layer. The method further includes heating the first layer and the second layer for imidization.