화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.40, No.4, 524-532, July, 2016
DOI10.7317/pk.2016.40.4.524  Export Citation
동적 가황처리된 PP/EPDM 블렌드의 결정화 속도 연구: 베타 핵제의 효과
Study on Crystallization Kinetics of Dynamically-Vulcanized PP/EPDM Blends: Effect of β Nucleating Agent
Bin Yang†, Yan-Li Deng, Xia Ru, Ji-Bin Miao, Ming Cao, Jia-Sheng Qian, Li-Fen Su, Peng Chen, Jing-Wang Liu1, La-Xia Wu2, and Tao Pang2
  • College of Chemistry and Chemical Engineering, Institute of High Performance Rubber Materials & Products, and Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei, Anhui, P.R. China
  • 1College of Polymer Science and Engineering, the State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan, P.R. China
  • 2Collaborative Innovation Center for Petrochemical New Materials, Anqing Normal University, Anqing, Anhui, P.R. China
E-mail:
Two types of β nucleating agents (β-NAs), aryl dicarboxylic acid amide (TMB-5) and diphenyl phthalate diamine (NT-C), were adopted to modify the polypropylene (PP)/ethylene propylene diene monomer (EPDM) blends, which were prepared by dynamic-vulcanization technology. Wide angle X-ray diffraction (WAXD) and differential scanning calorimetry (DSC) were used to study the crystallization kinetics of PP. Our results showed that the addition of β-NAs can considerably increase the crystallization temperature, and significantly decrease the spherulite size of β-PP (L300). The Jeziorny analysis showed there were ~82% and ~89% of relative crystallinity generated from the primary crystallization in the composites containing TMB-5 and NT-C, respectively. The crystallization half time (t0.5) showed that NT-C improved the overall crystallization rate more effectively than TMB-5. In addition, the peaks of the relative crystallization rate curves were shifted towards higher temperature by 14 and 9 ℃ with the addition of TMB-5 and NT-C, respectively.
Keywords:β nucleating agent;PP/EPDM;crystallization kinetics;toughening;dynamic-vulcanization
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