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首页> 外文期刊>Iranian polymer journal >Comparison properties of natural rubber/virgin acrylonitrile-butadiene rubber and natural rubber/recycled acrylonitrile-butadiene rubber blends
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Comparison properties of natural rubber/virgin acrylonitrile-butadiene rubber and natural rubber/recycled acrylonitrile-butadiene rubber blends

机译：天然橡胶/未加工的丙烯腈-丁二烯橡胶与天然橡胶/再生的丙烯腈-丁二烯橡胶混合物的比较性能

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摘要

Cure characteristics, mechanical and morphological properties of natural rubber/virgin acrylonitrile-butadiene rubber (NR/NBRv) and natural rubber/recycled acrylonitrile-butadiene rubber (NR/NBRr) blends were investigated. The properties of NR/NBRv and NR/NBRr blends were studied at five different ratios of virgin and recycled NBR content [i.e., 95/5, 90/10, 85/15, 75/25, 65/35 parts per hundred rubber (phr)]. The blends were processed on a two-roll-mill and a fixed amount of carbon black was also incorporated. Results showed that scorch time (t_(s2)) and minimum torque (M_L) increased with increasing virgin and recycled NBR in both the blends. However, cure time (t_(90)) and maximum torque (M_H) showed decreasing trend for the NR/NBRr blends and increasing trend for the NR/NBRv blends. Tensile strength and elongation at break (E_b) decreased with increasing virgin and recycled NBR content. M100, M300 (stress at 100 % elongation and 300 % elongation) and hardness significantly increased, while resilience decreased with increasing the virgin and recycled NBR content. The scanning electron microscopy study indicated that recycled NBR exhibited a weak interaction with NR matrix, particularly when more than 15 phr of recycled NBR was used, thus decreasing some of the mechanical properties of the NR/NBRr blends. Overall results show that the NR/NBRr blends have good properties such as cure characteristics, hardness, M100, M300 and swelling properties compared to the NR/NBRv blends.
机译：研究了天然橡胶/未加工的丙烯腈-丁二烯橡胶（NR / NBRv）和天然橡胶/再生的丙烯腈-丁二烯橡胶（NR / NBRr）混合物的固化特性，力学性能和形态学性能。研究了NR / NBRv和NR / NBRr共混物的性能，它们分别以原始NBR含量和循环NBR含量的5种不同比率进行研究（即每100橡胶中95 / 5、90 / 10、85 / 15、75 / 25、65 / 35份（ phr）]。将共混物在两辊轧机上加工，并加入固定量的炭黑。结果表明，两种混合物中的焦化时间（t_（s2））和最小扭矩（M_L）均随着原始和再生NBR的增加而增加。然而，硫化时间（t_（90））和最大扭矩（M_H）显示出NR / NBRr共混物的下降趋势，而NR / NBRv共混物的增长趋势。拉伸强度和断裂伸长率（E_b）随原始和再生NBR含量的增加而降低。 M100，M300（在100％伸长率和300％伸长率时的应力）和硬度显着增加，而回弹性随原始NBR和再循环NBR含量的增加而降低。扫描电子显微镜研究表明，回收的NBR与NR基体的相互作用较弱，尤其是当使用超过15 phr的回收NBR时，因此降低了NR / NBRr共混物的某些机械性能。总体结果表明，与NR / NBRv共混物相比，NR / NBRr共混物具有良好的性能，例如固化特性，硬度，M100，M300和溶胀性。

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  • 来源
    《Iranian polymer journal》 |2015年第3期|185-195|共11页
  • 作者

    H. S. Ahmad; H. Ismail; A. R. Azura;

  • 作者单位

    School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia;

    School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia;

    School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    NR; NBRv; NBRr; Cure characteristics; Mechanical properties; Morphological properties;

    机译：NR;NBRv;NBRr;固化特性;机械性能形态特性;

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