利用核磁共振和毛细管流变仪对茂金属催化环烯烃共聚物(COC)的结构进行了表征,利用同向双螺杆纺丝机初步探索出熔融纺丝工艺,制备出环烯烃纤维,对其力学性能进行了研究.结果表明:COC主要由降冰片烯交替序列结构和二单元连续结构组成,这些大体积的脂环结构使其为非晶性,透明度高且具有较高的玻璃化转变温度；COC熔体是典型的切力变稀流体；COC的可纺性较好,随着卷绕速度的增加,喷丝头拉伸比变大,分子链取向度增加从而导致纤维强度提高.纺丝温度为280℃,卷绕速度为700 m/min时,纤维断裂强度达3.6 cN/dtex.%The structure of metallocene-catalyzed cycloolefine copolymer (COC) was characterized by nuclear magnetic resonance and capillary rheology. The melt spinning process of cycloolefin fiber was preliminarily explored on a co-rotating twin screw spinning machine. The mechanical properties of the fiber were studied. The results showed that COC was mainly composed of alternating and diad sequences of norbornene. The large-volume alicyclic structures resulted in its amorphous structure with high transparency and relatively high glass transition temperature. COC melt was a typical shear thinning fluid. COC had fairly good spinnability. The spinneret draft ratio and the orientation degree of molecular chain were imcreased with the increase of winding speed, which caused the fiber strength to increase. The breaking strength of the fiber was up to 3.6 cN/dtex as the spinning temperature was 280 t and the winding speed was 700 m/min.
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