Series-innovative principles-31-Principles of Porous Materials

The principle of porous materials is described as follows:
1) Let the object become porous, or use auxiliary porous parts (such as insertion and coverage );
2) if an object is already porous, fill it with a substance in advance;
The reason for this principle is that the general mechanical system is generally made of non-permeable solid material, although non-permeability material has its advantages, however, we cannot ignore the advantages of permeability (porous) materials. For example, our human living organs are representative of permeability. Many machines have internal motion functions. "rough" machines are implemented with pipelines, pumps, and other tools, while fine-grained machines can be implemented by penetrating membranes and molecular forces. When porous structures (such as holes, bubbles, and capillary tubes) are used, these structures do not contain any physical particles, they can be vacuum, or they can be filled with useful gases, liquids, or solids, the purpose is to make full use of the advantages of the pore structure. An intuitive advantage of porous structure is that it can save materials and reduce the weight (strong, lightweight, and breathable) without affecting the structure quality ). There are many examples of the porous principle (process, especially in the field of composites ):

A) The buoyancy part of shipbuilding uses a porous structure, which not only reduces the weight and buoyancy, but also improves the safety of the ship because when one or more holes are damaged, other pore structures still maintain buoyancy;
B) Application of foam metal and foam plastic (Aircraft Wing made of foam metal is strong and lightweight)
C) medicated cotton (made of porous cotton with alcohol); Use a sponge to store liquid ammonia;
D) screens, mosquito nets, and sponge;

In terms of structural mechanics, porous structures are often more efficient (advantageous) than solid structures in terms of mechanical properties );
The use of porous materials to improve the mechanical properties of objects;
Storage of hard-to-store materials using porous materials;
Use porous structure filtering (biological organs themselves are typical) and separation;

Series-innovative principles-31-Principles of Porous Materials