实验发现，当凝固浴温度低于20℃时，由于双扩散能力弱导致纤维成形性很差

Experiments have found that when the temperature of the coagulation bath is lower than 20°C, the fiber formability is poor due to weak double diffusion ability. Therefore, the temperature of the coagulation bath is selected to be 20°C, and the diffusion rate of the solvent at this temperature is appropriate, the resulting fiber structure is uniform and compact, and the mechanical properties are good.

The experiment found that when the solidification bath temperature is below 20 degrees C, the fiber forming is very poor due to the weak double diffusion ability. Therefore, the temperature of the solidification bath is selected is 20 degrees C, the diffusion rate of the solvent at this temperature is appropriate, the resulting fiber structure is uniform and dense, and the mechanical performance is good.

It is found that when the coagulation bath temperature is lower than 20 ℃, the fiber formability is poor due to the weak double diffusion ability. Therefore, the coagulation bath temperature of 20 ℃, at which the solvent diffusion rate is appropriate, the fiber structure is uniform and dense, and the mechanical properties are good.