基于溶液喷射法制备顺丁橡胶纤维的结构与性能

采用溶液喷射法探索制备顺丁橡胶纤维的可行性,并对初生顺丁橡胶纤维进行紫外交联,探究了纺丝液浓度和交联剂浓度对纤维形貌和直径的影响。结果表明未交联的顺丁橡胶纤维无法保持圆形纤维形态,纤维较粗且串珠很多,其最佳纺丝液浓度为6%(质量分数);紫外交联能够显著改善顺丁橡胶纤维形貌,交联后的顺丁橡胶纤维细度较细,呈现出光滑的圆柱形,纤维间粘连情况减少,且当交联剂浓度为12%(质量分数)时,顺丁橡胶纤维最细,其平均直径为2.41μm;交联后的纤维在四氢呋喃溶液中浸泡24 h,形态保持良好;顺丁橡胶纤维的交联密度随交联剂含量的增加而增大。

Preparation and properties of polybutadiene rubber fibers by solution blowing

The feasibility of preparing polybutadiene rubber(BR)fibers is explored by solution blow spinning and UV curing methods.The effects of the concentration of spinning solution and crosslinking agent on the morphology and diameter of the fibers are investigated.The results showed that the uncrosslinked BR fiber could not keep the shape of round,and the fiber is coarse and have a lot of beads.The optimum spinning solution concentration is 6 wt%.UV crosslinking can significantly improve the morphology of BR fiber.The fineness of the crosslinked BR fiber is fine,showing a smooth cylindrical shape,and the adhesion between fibers is reduced.When the concentration of crosslinking agent is 12 wt%,the BR fibers are the finest with an average diameter of 2.41μm.After soaked in tetrahydrofuran solution for 24 hours,the fiber morphology remains good.The crosslink density increases with increase of the content of crosslinking agent.