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对两种δ-Ticl_3进行了X光衍射测定,测得了微晶粒大小。计算了微晶粒比表面,并就δ-TiCl_3表面上可与Bu_2O分子牢固结合的Ti原子数目及状态作了估計和討諭。估算了活性中心数,推导了活性中心数与l/D_(100)之间的简单线性关系,从而解释了有关实验事实。对丙烯液相本体聚合中聚合鏈平均寿命計算表明,间歇通入丙烯、乙烯制造乙丙嵌段共聚物突应主要是聚丙烯和聚乙烯共混物。
X-ray diffraction measurements of the two δ-Ticl_3 species were carried out and the crystallite size was measured. The specific surface area of the micro-grains was calculated and the number and state of Ti atoms that can be firmly bonded to the Bu_2O molecules on the δ-TiCl_3 surface were estimated and discussed. The number of active centers was estimated, and a simple linear relationship between the number of active centers and l / D 100 was derived, thus explaining the experimental facts. The calculation of the average life span of the polymer chains during the bulk liquid phase polymerization of propylene shows that the intermittent inflow of propylene and ethylene into the ethylene-propylene block copolymer mainly consists of polypropylene and polyethylene blends.