Article
  • Study on Crystallization Kinetics of Dynamically-Vulcanized PP/EPDM Blends: Effect of β Nucleating Agent
  • Yang B, Deng YL, Ru X, Miao JB, Cao M, Qian JS, Su LF, Chen P, Liu JW, Wu LX, Pang T
  • 동적 가황처리된 PP/EPDM 블렌드의 결정화 속도 연구: 베타 핵제의 효과
Abstract
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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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2016; 40(4): 524-532

    Published online Jul 25, 2016

  • 10.7317/pk.2016.40.4.524
  • Received on Dec 11, 2015
  • Accepted on Apr 11, 2016