Method for detecting concentration of oil solution in producing polyacrylonitrile raw yarn in use for carbon fiber

Abstract

A method for detecting concentration of oiling agent in production of polyacry / onitrile raw filament being used to prepare carbon fiber includes obtaining concentration and refractive power of oiling agent, optimizing linear equation, sampling, measuring refractive power and converting measured refractive power to be concentration.

Description

technical field

[0001] The invention belongs to the measurement technology and relates to the improvement of the oil agent concentration detection method in the production process of polyacrylonitrile raw silk for carbon fiber. Background technique

[0002] Polyacrylonitrile-based carbon fibers have the characteristics of high specific strength, high specific modulus, high temperature resistance, corrosion resistance, creep resistance, and strong stability. They are widely used in various fields such as aerospace, mechanical electronics, chemical building materials, and energy transportation. Applications. The production of polyacrylonitrile-based carbon fiber includes two major links: production of polyacrylonitrile precursor and carbonization of precursor, among which the production of precursor is the key link. Sex is decisive. The production of polyacrylonitrile raw silk includes multiple processes such as polymerization, defoaming, single removal, spinning, washing, o...