CAJ | 학술논문

以球形高效负载的TiCl4/MgCl2/邻苯二甲酸二异丁酯( DIBP)为催化剂，采用本体聚合方法进行丙烯与1-丁烯共聚合研究.考察了共单体效应对共聚活性及聚合物立构规整性的影响；表征了共聚物的结构.结果表明，随着1-丁烯/丙烯投料比的增加，聚合活性呈先升高后降低的趋势，在1-丁烯/丙烯摩尔投料比为0.26条件下聚合活性达到最高，并随着共聚物中1-丁烯含量的增加，共聚物的熔点明显下降，分子量降低，分子量分布变窄，同时共聚物力学性能有明显提高，透明度逐渐增加.
이구형고효부재적TiCl4/MgCl2/린분이갑산이이정지( DIBP)위최화제，채용본체취합방법진행병희여1-정희공취합연구.고찰료공단체효응대공취활성급취합물립구규정성적영향；표정료공취물적결구.결과표명，수착1-정희/병희투료비적증가，취합활성정선승고후강저적추세，재1-정희/병희마이투료비위0.26조건하취합활성체도최고，병수착공취물중1-정희함량적증가，공취물적용점명현하강，분자량강저，분자량분포변착，동시공취물역학성능유명현제고，투명도축점증가.
The spherical MgCl2 supported TiCl4 catalyst( TiCl4/MgCl2/DIBP) was applied to bulk copolymeri-zation of propylene and 1-butene. The influence of comonomer feed ratio on catalyst activity and stereoregulari-ty of the copolymers were studied. The composition and properties of copolymers were investigated by 13 C nuclear magnetic resonance ( 13 C NMR ) , differential scanning calorimetry ( DSC ) , infrared ( IR ) and gel permeation chromatography(GPC). The results showed that the polymerization activity increased firstly and then decreased with the increasing 1-butene/propylene feed ratio(B/P). The highest polymerization activity was achieved at B/P=0. 26. As the 1-butene content in the copolymers increased, the melting point of the co-polymers decreased and the molecular weight distribution became narrow. Meanwhile, the mechanical proper-ties of the copolymers were improved significantly, and the transparency was gradually increased.