Patent ID: 11876232
Assignee: DONGHUA UNIVERSITY
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC H  D  Y | IPC D  H

Claim 6:
7. The method of claim 6, wherein the steps of the melt-blending spinning are as follows:
(1) putting the phenolic resin and the other resin into a screw for a melting to obtain a uniformly mixed phenolic resin/other resin melt;
(2) extruding the melt through a spinneret hole to form a thin stream of melt;
(3) cooling and curing the thin stream of melt to form an as-spun fiber;
(4) oiling and winding the as-spun fiber to obtain the blend fiber;
wherein the steps of the solution-blending spinning are as follows:
(1) adding the phenolic resin and the other resin to a solvent, and stirring at 25-98° C. until completely dissolving to obtain a phenolic resin/other resin blend solution;
(2) putting the phenolic resin/other resin blend solution at 20-25° C. for more than 6 h to obtain a second resulting solution, then vacuum deaerating the second resulting solution to obtain a spinning solution;
(3) performing a dry spinning, a wet spinning, or a dry-wet spinning on the spinning solution to obtain the as-spun fiber, then stretching the as-spun fiber to obtain the blend fiber;
in the phenolic resin/other resin blend solution, wherein a total content of the phenolic resin and the other resin is 5-50 wt %, and a mass ratio of the other resin to the phenolic resin is (9-5):(1-5);
wherein viscosity of the spinning solution is 20-2000 Pa·s;
wherein the dry spinning involves technological parameters: a tank temperature of 25-95° C., a hot air temperature in a dry spinning tunnel of 25-190° C., and a spinneret draft ratio of 0.4-1.8;
wherein the wet spinning involves technological parameters: a coagulation bath temperature of 25-65° C., and a spinneret draft ratio of (−0.5)-1.0;
wherein the dry-wet spinning involves technological parameters: a tank temperature of 25-95° C., a coagulation bath temperature of 0-25° C., and a spinneret draft ratio of 0.55-1.35.