摘要
Ultra-high strength and modulus polyethylene fibers can be produced from UHMW-PE(ul-tra-high molecular weight polyethylene) by gel spinning and ultra-high drawing method.The spe-cial supermolecular structure of″shish-kebabs″ is the intrinsic course for the fiber having highperformance.In this paper,the formation mechanism of the characteristic structure of PE fibershas been investigated by means of SEM,DSC,WAXD,SAXS and TEM,The experimental resultsshow that the extended-chain structure of PE fibers is formed originally from the bridged mole-cules in amorphous region and increased gradually during further drawing porcess.The″shish-kebab″ structure is formed by the combination of extended-chalnS and originalfolded-chains.
Ultra-high strength and modulus polyethylene fibers can be produced from UHMW-PE(ul- tra-high molecular weight polyethylene) by gel spinning and ultra-high drawing method.The spe- cial supermolecular structure of″shish-kebabs″ is the intrinsic course for the fiber having high performance.In this paper,the formation mechanism of the characteristic structure of PE fibers has been investigated by means of SEM,DSC,WAXD,SAXS and TEM,The experimental results show that the extended-chain structure of PE fibers is formed originally from the bridged mole- cules in amorphous region and increased gradually during further drawing porcess.The″ shish-kebab″ structure is formed by the combination of extended-chalnS and original folded-chains.
