Fine-Array Porous Material for Buoyancy and Friction Control
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Solution Overview
Problem
Conventional porous materials, such as metal foams and nanoporous materials, have large variations in pore sizes and low uniformity, leading to suboptimal buoyancy, friction, and fluid dynamic characteristics, particularly in aquatic environments and fluid pipes.
Innovation Solution
Development of fine-array porous materials with a high specific surface area, uniform pore sizes, and a support layer, which can be used in various applications to enhance buoyancy, reduce friction, and improve fluid dynamics, including in vehicles, pipes, and garments, by creating a stable surface tension and air storage volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional porous materials are used, then manufacturing is easier and cost is lower, but pore size uniformity is poor and buoyancy is suboptimal
Solution Approach 1:
The invention divides the porous material into discrete spherical pores with uniform sizes, rather than having a random continuous pore structure. This segmentation approach allows precise control over pore size distribution while maintaining manufacturability through standardized production processes for spherical elements.
Solution Approach 2:
The invention changes the pore size parameter from a random distribution to a controlled uniform distribution with specific size ranges (50-500 μm). This parameter control is achieved through specific manufacturing methods that produce spherical pores with consistent dimensions, directly improving buoyancy performance while maintaining manufacturing feasibility.
2Reliability
If pore size variation is large (>100%), then manufacturing is simpler, but buoyancy and fluid dynamic characteristics are suboptimal
Solution Approach 1:
The invention implements strict control of the pore size parameter, limiting variation to less than 20% (ideally less than 10%) around a target size of 50-500 μm. This parameter control ensures reliable and repeatable buoyancy performance while maintaining manufacturing feasibility through controlled production processes.
Solution Approach 2:
The invention incorporates quality control mechanisms that monitor pore size during or after manufacturing, providing feedback to adjust the process and maintain pore size uniformity within the specified 20% (or 10%) tolerance. This ensures consistent buoyancy performance across production batches.
3Quantity of substance
If specific surface area is increased to >10/mm, then air storage volume and buoyancy improve, but manufacturing precision requirements increase
Solution Approach 1:
The invention utilizes a porous material structure with specifically engineered spherical pores to achieve high air storage volume. The porous structure provides the necessary surface area (>10/mm) for buoyancy while the spherical geometry and controlled size distribution maintain manufacturing feasibility and performance reliability.
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 fine-array porous materials significantly increase buoyancy and reduce friction in aquatic environments and fluid flow, achieving a high surface-area-to-volume ratio with uniform pore sizes, resulting in improved performance in vehicles, pipes, and other applications.
Implementation Method 1
a uniform surface tension can form on the fine-array porous material surface. As a result of the similar opening sizes of the fine-array porous material, a substantially stable surface tension can be achieved as F=P/A
Implementation Method 2
The porous material can have a uniform air pressure therein. In addition, a uniform surface tension can form on the fine-array porous material surface.
Implementation Method 3
Buoyant materials can be used in boats, submarines, underwater pipelines, and other mechanical structures and vehicles for use with an aquatic environment
Data Source
AI summary
An apparatus including a fine-array porous material with a specific surface area higher than 10/mm, the specific surface area depending on different pore sizes, wherein the porous material comprises a plurality of pores having a substantially uniform size with a variation of less than about 20%, wherein the size is larger than about 100 nm and smaller than about 10 cm. The high-buoyancy apparatus can be part of a water vehicle such as a boat or a submarine, and the fine-array porous material is configured to reduce friction and/or control buoyancy. A conduit is also provided employing a fine-array porous material to reduce friction and/or control buoyancy. A garment is provided taking advantage of water repellant and/or UV/IR reflection properties of the fine-array porous material.