A coagulation and forming device suitable for dry-spray-wet-spinning method to manufacture aramid ⅲ fibers

Abstract

The invention discloses a coagulation forming device suitable for producing aramid III fiber by dry spraying-wet spinning method, which comprises two parts: a coagulation plate and a U-shaped coagulation tube. The U-shaped coagulation tube is mainly composed of a U-shaped tube, a regulating tube, and a wire outlet tube. One end of the U-shaped tube is connected to the coagulation plate, and the other end is flexibly connected to the regulating tube. The height difference between the liquid inlet and the liquid outlet of the U-shaped coagulation tube can be adjusted according to the spinning speed. The coagulation and forming device of the present invention can realize rapid and uniform coagulation of aramid III primary fibers, significantly increase the spinning speed of aramid III fibers, improve production efficiency, and at the same time produce better fiber quality, less burrs, and a more regular appearance. And because the device is small in size and compact in structure, modular manufacturing and replacement can also be realized.

Description

technical field [0001] The invention relates to spinning equipment for producing aramid III fibers, in particular to a coagulation forming device in a dry jet-wet spinning method, and belongs to the technical field of chemical synthetic fiber equipment. Background technique [0002] Aramid Ⅲ belongs to domestic high-performance organic fibers with high strength, high modulus, and high temperature resistance. It has now become a reinforcing fiber for the preparation of advanced composite materials for aerospace. At present, the industrial production of aramid fiber III at home and abroad is manufactured by wet spinning technology. The coagulation bath is the main equipment in the wet spinning process. In the coagulation technology of aramid III fiber wet spinning, the coagulation bath is usually a horizontal coagulation tank. The coagulation bath enters the bath from the end (front) where the spinneret is installed, and flows to the other end (rear) of the bath in parallel ...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the technical problem that the flow rate of coagulation liquid caused by the existing dry spray-wet spinning coagulation forming device is too fast to be reasonably controlled, thereby providing a method suitable for dry spray-wet spinning method to manufacture aramid III fiber solidification forming device

The invention solves the coagulation and forming defects of the fibers produced by using the low-solid-content aramid III polymerization solution as a raw material by dry spraying and wet spinning, and makes up for the shortcomings of the existing coagulation and forming devices

Images