Explanation

It refers to composite materials with physical properties (including some chemical properties and biological properties) other than mechanical properties, namely, various electrical properties (such as conductivity, superconductivity, piezoelectricity, etc.), magnetic properties (such as permanent magnetism, soft magnetism, magnetostriction, etc.), optical properties (such as light transmission, selective absorption, photochromism, etc.), thermal properties (such as heat insulation, heat conduction, low thermal expansion coefficient, etc.) Acoustic performance (such as sound absorption, noise reduction, etc.), as well as friction performance, damping performance, and chemical separation performance. functional composite materials are mainly composed of functional body and matrix, or two (or more) functional bodies. Generally, it is difficult to measure the performance of functional materials with one physical quantity, but it is necessary to conduct comprehensive evaluation with the superior value of materials, that is, the combination of several physical parameters affects the usability of materials. functional composite materials have been applied in aerospace (such as stealth fuselage, radar, fairing), mechanical and electrical (such as various converters, magnetic components, etc.) and other fields.

Classification