窦强,等高熔体流动速率β晶型聚丙烯的研制 Preparation of Polypropylene with High MFR B Crystalline Form DOU Qiang, WANG Bin (1. Dept. of Polymer Science, College of Materials Science and Engineering, Nanjing I niversity of Tech n>, Nanjing 210009, China 2. Petrochina Research Institute of Dushanzi Petrochem:al Corporation, Cusia 83300. China Abstract: It studied the influences of P crystalline form nuclcator(amide compound)and peroxide on the mechanical oroperties and melt flowability of high MFR Z20S PP. By means of WAXD diffraction, DSC analysis and polarizing microscope inspection, it showed that P crystalline form nucleator precipitated the creation of p crystalline form PP, and the spherulite of PP to be further fine-grained. Thus the impact strength of z30S PP was improved. ds: PP; B crystalline form; Nucleator; MFR 【上接第13页】 Analysis of Heat Transfer in Pastics Injection Molding ZHANG Churrji, TANG Yue ( Qingdao University of Science and Techology Qingdao 266042, China) Abstract: The heat transfer in plastics injection molding was analyzed by means of finite difference method and bound ary element method Key words: Injection molding; Cooling simulation; Finite difference method; Boundary element metod 欢迎订阅、投稿、刊登广告 01994-2007ChinaAcademicournalElectronicPublishingHouse.Allrightsresered.http://npcnknerPreparation of Polypropylene with High MFRβCrystalline Form DOU Qiang1 ,WANG Bin2 (11 Dept1 of Polymer Science , College of Materials Science and Engineering , Nanjing University of Technology , Nanjing 210009 ,China ; 21 Petrochina Research Institute of Dushanzi Petrochemical Corporation , Dushanzi 833600 ,China) Abstract : It studied the influences ofβcrystalline form nucleator (amide compound) and peroxide on the mechanical properties and melt flowability of high MFR Z30S PP1 By means of WAXD diffraction ,DSC analysis and polarizing microscope inspection ,it showed thatβcrystalline form nucleator precipitated the creation ofβcrystalline form PP , and the spherulite of PP to be further fine2grained1Thus ,the impact strength of Z30S PP was improved1 Key words: PP ;βcrystalline form ; Nucleator ; MFR 【上接第 13 页】 Analysis of Heat Transfer in Plastics Injection Molding ZHANG Chun2ji ,TANG Yue (Qingdao University of Science and Technology ,Qingdao 266042 ,China) Abstract : The heat transfer in plastics injection molding was analyzed by means of finite difference method and bound2 ary element method. Key words: Injection molding ; Cooling simulation ; Finite difference method ; Boundary element method 欢迎订阅、投稿、刊登广告 62 窦 强 ,等 高熔体流动速率β晶型聚丙烯的研制 © 1994-2007 China Academic Journal Electronic Publishing House. All rights reserved. http://www.cnki.net