Effect of Annealing Temperature on Low-temperature Toughness of <italic style="font-style: italic">β</italic>-Nucleated Polypropylene Random Copolymer/Ethylene-Propylene-Diene Terpolymer Blends

Hui-li Ding; Li-yuan Guo; Dong-jing Li; De Zheng; Jun Chen; Yu-ying Qian

doi:10.1007/s10118-015-1579-1

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Effect of Annealing Temperature on Low-temperature Toughness of β-Nucleated Polypropylene Random Copolymer/Ethylene-Propylene-Diene Terpolymer Blends

PAPER | Updated：2022-01-17

- Effect of Annealing Temperature on Low-temperature Toughness of β-Nucleated Polypropylene Random Copolymer/Ethylene-Propylene-Diene Terpolymer Blends
- Chinese Journal of Polymer Science Vol. 33, Issue 2, Pages: 256-264(2015)
- Affiliations：
  
  a.Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300130, China
  b.Guangdong Winner Functional Materials Co. Ltd., Foshan 528521, China
- Author bio：
  
  **Hui-li Ding (丁会利), E-mail: aleeding@hebut.edu.cn
- Funds：
- DOI：10.1007/s10118-015-1579-1
  CLC：
- Received：14 April 2014，
  
  Revised：2014-05-07，
  
  Accepted：20 May 2014，
  
  Published：2015-02
- Accepted：
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Hui-li Ding, Li-yuan Guo, Dong-jing Li, et al. Effect of Annealing Temperature on Low-temperature Toughness of β-Nucleated Polypropylene Random Copolymer/Ethylene-Propylene-Diene Terpolymer Blends[J]. Chinese Journal of Polymer Science, 2015, 33(2): 256-264. DOI: 10.1007/s10118-015-1579-1.
DOI：

Hui-li Ding, Li-yuan Guo, Dong-jing Li, et al. Effect of Annealing Temperature on Low-temperature Toughness of β-Nucleated Polypropylene Random Copolymer/Ethylene-Propylene-Diene Terpolymer Blends[J]. Chinese Journal of Polymer Science, 2015, 33(2): 256-264. DOI: 10.1007/s10118-015-1579-1. DOI：

摘要

Abstract

In this study

the effect of annealing temperature on the impact toughness of

-nucleated polypropylene random copolymer (PPR) and ethylene-propylene-diene terpolymer (EPDM) blends was investigated by differential scanning calorimetry (DSC)

wide-angle X-ray diffraction (WAXD)

dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM). Interestingly

the impact strength of

-PPR/20EPDM blend annealed at 120 ℃ is 1.8 times as high as that of unannealed samples. In addition

the crystalline structure

the relaxation of chain segments and fracture morphology of

-PPR/EPDM blends were also investigated to explore the toughening mechanism related to annealing. The results show that annealing at moderate temperatures results in the improvement of integrity of the crystal structure and the relative content of

-phase. The work provides a possible method to toughen the semicrystalline polymer at low temperatures by annealing.

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Effect of Annealing Temperature on Low-temperature Toughness of β-Nucleated Polypropylene Random Copolymer/Ethylene-Propylene-Diene Terpolymer Blends

DOI：10.1007/s10118-015-1579-1

摘要

Abstract

关键词

Keywords

references