An air treatment device in the production process of carbon fiber precursor and its application

Abstract

An air treatment device in the production process of carbon fiber raw silk and its application, belonging to the technical field of chemical fiber production, prolonging the service life of the oil agent, reducing the frequency of oil agent replacement, increasing the output and pass rate of the raw silk, and facilitating uniform oiling and steam drafting The plasticizing effect is beneficial to improve the quality and uniformity of the raw silk. The device includes a workbench, a bracket, an air intake pipe, a main gas delivery pipe and a gas delivery branch pipe. The upper part of the bracket is provided with a collar, the main gas delivery pipe is arranged horizontally and snapped into the collar, and the lower part of the main air delivery pipe is connected with the intake pipe. There are a number of branch gas pipes above the main gas pipe. The position of the branch pipes corresponds to the spinning position of the carbon fiber precursor. A blowing ring is set above the branch pipes. The inner cavity of the blowing ring passes through the branch pipes and the The main pipe is connected, and the inner surface of the air blowing ring is evenly distributed along the circumferential direction with an even number of air injection ports; the air treatment device is set at a position 0.5m-2m in front of the upper oil tank, and the air treatment device is set at a position 0.5m-2m in front of the steam drawing furnace 2m position.

Description

technical field [0001] The invention belongs to the technical field of chemical fiber production, and in particular relates to an air treatment device in the production process of carbon fiber precursors and its application. Background technique [0002] Carbon fiber is a high-performance special fiber widely used in key fields such as aerospace and high-end civilian fields. Now it has formed a pivotal new material system, and it is still developing strongly, with a large market space and application prospects. In recent years, with the strong support of the state and the participation of powerful enterprises, my country's carbon fiber business has made great progress. However, compared with developed countries, we still have a big gap in product stability, reliability and economy. . As the precursor fiber of high-performance carbon fiber, the quality of the precursor directly affects the quality of carbon fiber, which is the bottleneck restricting the development of carbon ...

AI Technical Summary

Problems solved by technology

If the oil used is a silicone oil, it is possible that the local oil will undergo cross-linking due to the high temperature of the fiber after hot water drawing, and the viscosity will increase greatly, forming a substance similar to an adhesive, which adheres to the fiber. Increases the probability of entanglement and filament breakage, affecting fiber performance

Secondly, there are many carbon fiber precursors in the production process, and multiple spinning positions are produced at the same time, and a bundle of fibers in each spinning position contains tens of thousands of monofilaments. The fibers are coagulated, washed, and drawn in hot water. Under the impact of water flow and external forces such as drafting roller tension, it is easy to parallel, intertwine, and twist, which affects the uniform fiber formation and oiling effect, resulting in an impact on fiber strength and quality.

Images