Polymer Nanofiber Structural Body with Gradient Buffer Region
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Solution Overview
Problem
Existing polymer nanofiber structural bodies face issues with peeling when used in bent or curved states due to interface changes during bonding of multiple fiber layers, and clogging of pore structures occurs when using nanobeads to improve interfacial adhesiveness.
Innovation Solution
A polymer nanofiber structural body is created with layers having different polymer nanofiber existence ratios or average pore diameters, laminated through a buffer region where the ratio or diameter continuously changes, eliminating interfaces and ensuring continuous integration of nanofibers without peeling, even under stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple fiber layers are bonded to provide a polymer nanofiber structural body with a plurality of pore structures, then the ability to selectively collect fine particles of different sizes is improved, but peeling occurs when the structural body is used in bent or curved states
Solution Approach 1:
The structural body is divided into multiple layers with different pore diameters, where each layer can selectively collect fine particles of specific sizes. This segmentation allows the structural body to maintain multiple pore structures while using a gradient transition approach to prevent peeling.
Solution Approach 2:
A gradient transition region is introduced where the pore diameter continuously changes from the first value in the first layer to the second value in the second layer. This gradual parameter change prevents abrupt interface formation, thereby preventing peeling when the structural body is bent or curved.
2Strength
If nanobeads are used to improve interfacial adhesiveness between fiber layers, then bonding strength is improved, but pore structures become clogged
Solution Approach 1:
Instead of using nanobeads to improve bonding, the invention changes the structural parameter by introducing a gradient transition region where pore diameter gradually changes. This approach improves interfacial adhesiveness through continuous structural transition without clogging the pore structures.
3Productivity
If polymer nanofibers are integrated to form a structural body, then specific surface area and collection efficiency are improved, but peeling occurs at layer interfaces under stress
Solution Approach 1:
The invention introduces a gradient transition region where the pore diameter continuously changes between layers, eliminating abrupt interfaces that cause peeling under stress. This maintains high collection efficiency while ensuring interface stability.
Solution Approach 2:
The gradient transition region acts as a cushioning zone that anticipates and prevents peeling by providing a gradual transition rather than an abrupt interface. This beforehand cushioning ensures the structural body remains intact under bending or curving stresses.
Data Source
AI summary
A polymer nanofiber structural body of the present invention is a polymer nanofiber structural body in which polymer nanofibers are integrated, including a first layer and a second layer different from each other in polymer nanofiber existence ratio, in which: both the first layer and the second layer are laminated through a buffer region; the buffer region includes a region in direct contact with both the first layer and the second layer; and a polymer nanofiber existence ratio of the region continuously changes from a polymer nanofiber existence ratio of the first layer to a polymer nanofiber existence ratio of the second layer in a direction from the first layer to the second layer.