超高相对分子质量聚乙烯用钛系催化剂的研究进展

摘要

综述了国内外超高相对分子质量聚乙烯（UHMWPE）用钛系催化剂的优势、合成方法的研究现状及进展。UHMWPE所用催化剂正朝着超高活性、形态可控、聚合物相对分子质量及其分布精确可调的方向发展。通过改进催化剂合成技术，可制备更符合加工要求的聚合物，并有力地推进了UHMWPE新应用领域的开发。新一代性能优良的UHMWPE用催化剂应充分考虑：提高催化活性，为实现聚合物性质的精确控制提供基础；均匀的活性中心分布；优良的共聚合性能；优异的相对分子质量调变性能。%The paper summarizes the superiority and synthetic method of titanium-containing catalyst on ultrahigh relative molecular mass polyethylene(UHMWPE). Development of catalyst for UHMWPE is in the direction toward ultrahigh activity,morphology to be controlled,polymer relative molecular mass and its distribution adjusted with high precision. The polymer meeting process requirements could be produced through modification of catalyst synthetic technology,which accelerates its development in new field. The development of new catalyst with excellent performances for UHMWPE should be considered that:1)improving catalytic activity to provide the basis of polymer properties controll;2)homogeneous activity center distribution;3)excellent copolymerization performances;4)outstanding modulation properties for relative molecular mass.