Continuous feeding system for polymerization of carbon fiber precursors

Abstract

The invention discloses a continuous feeding system for the polymerization of carbon fiber precursors, belonging to the technical field of the production of carbon fibers. The continuous feeding system comprises a dimethyl sulfoxide storage tank, an acrylonitrile storage tank, a plurality of monomer storage tanks, an initiator storage tank, pumps, mass flow meters, regulating valves, a static mixer and a mixed liquid storage tank, wherein the dimethyl sulfoxide storage tank, the acrylonitrile storage tank, the monomer storage tanks and the initiator storage tank are independently connected with the pumps through independent pipelines; the pumps are respectively and sequentially connected with the mass flow meters and the regulating valves; each pipe connected with the regulating valve is communicated with the static mixer; and the static mixer is communicated with the mixed liquid storage tank through the pipeline. According to the continuous feeding system, each raw material storage tank is connected with the pump, respectively, the mass flow meters and the regulating valves are sequentially and respectively connected to the pipelines so as to independently and precisely control the feeding quantity of each storage tank, so that the real-time and continuous feeding of raw materials of different formulae can be realized; and meanwhile, the continuous product can be realized, so that the production efficiency is substantially improved, and the product quality is stable.

Description

technical field [0001] The invention relates to a continuous feeding system for carbon fiber precursor polymerization, which belongs to the technical field of carbon fiber production. Background technique [0002] Carbon fiber is an inorganic polymer fiber with a carbon content of more than 90%. In addition to the high temperature resistance, friction resistance, corrosion resistance, and electrical and thermal conductivity of general carbon materials, it also has softness, machinability, light weight, and high specific strength. characteristics, thus being widely used in many fields such as military, textile, sports equipment, chemical industry, medical equipment and mechanical processing. [0003] The preparation process of polyacrylonitrile carbon fiber includes raw material polymerization, turning spinning, washing, drying and densification, pre-oxidation, carbonization, sizing and drying, etc. Among them, raw material polymerization is the first process of carbon fiber...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems in the existing carbon fiber polymerization production process that the production cannot be carried out continuously, the production efficiency is low, and the product quality is not stable enough, the present invention provides a continuous feeding system for carbon fiber precursor polymerization, and the adopted technical scheme is as follows:

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