Formation and stability of carbon nanotube network in natural rubber: Effect of non-rubber components

Formation and stability of carbon nanotube network in natural rubber: Effect of non-rubber components
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天然橡胶中碳纳米管网络的形成和稳定性:非橡胶组分的影响

DOI:
10.1016/j.polymer.2015.07.044
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发表时间:
2015
期刊:
影响因子:
4.6
通讯作者:
Radusch H-J
Radusch H-J
中科院分区:
化学2区
文献类型:
--
作者:
Pham T;Henning S;Klehm J;Wießner S;Stöckelhuber KW;Hoang XT;Vennemann N;Heinrich G;Radusch H-J

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采用在线电导测量方法,研究了天然橡胶(NR)、脱蛋白天然橡胶(DPNR)和聚异戊二烯(IR)胶料从加工、压延、压制/交联到后拉伸全过程中碳纳米管(CNT)网络的形成和稳定性。CNT絮凝的动力学进行了描述和解释,考虑到消耗力被认为是驱动力和被认为是阻碍因素的结合橡胶层的厚度。NR和DPNR中磷脂的存在通过阳离子-π键的方式改善了CNTs与橡胶的相互作用,阻碍了填料的絮凝。CNT/IR复合物中没有阳离子-π键以及与之相关的薄的结合橡胶层是CNT在IR中即使在室温下也具有强烈絮凝倾向的原因。研究了加压时间、温度、交联反应以及机械变形对NR胶料中CNT网络的形成和稳定性的影响,并考虑到交联磷脂的作用进行了讨论。
The formation and stability of carbon nanotube (CNT) network in natural rubber (NR), deproteinized NR (DPNR) and polyisoprene (IR) compound were investigated by means ofthe method of the online measured electrical conductancein a whole process from processing and rolling over pressing/cross-linking to post-stretching. The kinetics of CNT flocculation was described and explained by taking into consideration the depletion force considered as driving force and the thickness of the bound rubber layer considered as hindering factor. The presence of linked phospholipids in NR and DPNR improves the rubber-filler interaction of CNTs through the cation-π bonding that hinders the filler flocculation. The absence of the cation-π bonding in CNT/IR compound and the related thin layer of bound rubber are the reason for the strong tendency of flocculation of CNTs in IR even at room temperature. The effect of pressing time, temperature and cross-linking reaction as well as mechanical deformation on the formation and stability of CNT network in NR compounds was also investigated and discussed by taking into consideration the role of the linked phospholipids.
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