A method for controlling the polymerization reaction of carbon fiber production

Abstract

The invention relates to a method for controlling the polymerization reaction of carbon fiber production, which solves the technical problems of lack of agitator, lack of reactor liquid level control, and failure to collect valve position signals as feedback in existing devices and methods, and includes the following steps : Ready, reset command triggered; feeding starts; initiator input, jacket water system input; kettle jacket water temperature control, frequency conversion stirring rate calculation and adjustment; first temperature setting and maintenance; kettle jacket water secondary temperature control , Calculation and adjustment of frequency conversion stirring rate; secondary temperature rise to set value, frequency conversion stirring rate calculation and secondary adjustment; second temperature setting and maintenance; jacket water adjustment, frequency conversion stirring adjustment, reactor pressure maintenance; reaction completed, unloading . The invention can be used in the polymerization reaction of carbon fiber production.

Description

technical field [0001] The invention relates to a carbon fiber production control method, in particular to a carbon fiber production polymerization control method. Background technique [0002] PAN-based carbon fiber has the characteristics of high specific strength, high specific modulus, high temperature resistance, fatigue resistance, creep resistance, electrical conductivity, heat insulation and small thermal expansion coefficient. It is a new type of carbon material with comprehensive excellent properties and is widely used in aviation and aerospace. , chemical, construction and sporting goods industries. [0003] The production process of PAN-based carbon fiber includes: polymerization, spinning, oxidative carbonization and other stages. Polymerization refers to the use of acrylonitrile (AN), itafuroic acid (IA) free radical solution, azobisisobutyronitrile (AIBN) as an initiator, in dimethylsulfoxide (DMSO) to synthesize polyacrylonitrile spinning solution. [0004...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the technical problems of lack of agitator, lack of reactor liquid level control, and failure to collect valve position signals as feedback in the existing devices and methods, and provide a reasonable structure that can ensure the uniformity of the polymerization reaction and polymerization. Liquid Quality Control Method for Carbon Fiber Production Polymerization Reactions

Images