FIBER-REINFORCED COMPOSITE MATERIAL, METHOD FOR PRODUCING THE SAME, AND WIRING BOARD

摘要

PROBLEM TO BE SOLVED: To provide a fiber-reinforced composite material in which high transparency is always maintained without being affected by temperature conditions, wavelengths, and the like, and various types of functionality are imparted by forming a composite between fibers and a matrix material.SOLUTION: There is provided a fiber-reinforced composite material containing fibers having an average fiber diameter of 4 to 200 nm and a matrix material, and having a visible light transmittance of 60% or more at a wavelength of 400 to 700 nm, which is a conversion value based on a thickness of 50 μm. Since fibers having an average fiber diameter of shorter than the wavelength of visible light (380-800 nm) are used, the refraction of visible light by the fibers is hard to occur, and even if a temperature change and a wavelength variation occur, the scattering loss of visible light at the interface of fibers and the matrix material is hard to be generated. Therefore, a high transparency of a visible light transmittance of 60% or more in terms of 50 μm thickness can be held with stability.