The usability of recycled carbon fibres in short fibre thermoplastics: interfacial properties
The usability of recycled carbon fibres in short fibre thermoplastics: interfacial properties
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DOI：
10.1007/s10853-016-0053-y
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发表时间：
2016-08-01
影响因子：
4.5
通讯作者：
Thomason, J.
中科院分区：
文献类型：
--
作者：
Burn, D. T.;Harper, L. T.;Thomason, J.
这项研究的目的是探索将不连续的回收碳纤维与聚丙烯结合起来，生产一种低成本、高比硬度的材料用于大容量应用的可行性。碳纤维和聚丙烯固有的低亲和力促使人们利用微粘合测试详细研究了碳纤维的表面特征和两种材料之间的界面行为。对去除纤维上的浆料和引入马来酸酐接枝聚丙烯偶联剂的效果进行了广泛的研究。发现聚丙烯在大气条件下制备时会发生降解，因此有必要在氮气中形成液滴。用热解和溶解技术去除纤维上的浆料改变了纤维的表面形态，使纤维的界面剪切强度(IFSS)分别提高了4%和33%。加入质量分数为2wt%的马来酸酐偶联剂后，纤维与基质的粘合力有了较大的提高，IFSS提高了320%。
The objective of this study was to investigate the feasibility of combining discontinuous recycled carbon fibres with polypropylene, to produce a low-cost, high specific stiffness material for high-volume applications. The inherent low affinity of carbon fibre and polypropylene motivated a detailed study of the surface characteristics of carbon fibre and interfacial behaviour between the two materials, using the microbond test. The effects of removing the sizing from the fibres, as well as introducing a maleic anhydride-grafted polypropylene coupling agent, were extensively investigated. Polypropylene was found to degrade when prepared under atmospheric conditions; therefore, it was necessary to form droplets under nitrogen. Removal of the sizing from the fibre using pyrolysis and solvolysis techniques altered the surface morphology of the fibre and increased the interfacial shear strength (IFSS) by 4 and 33 %, respectively. A more significant improvement in the fibre-matrix adhesion was achieved by adding a maleic anhydride coupling agent at 2 wt%, which increased the IFSS by 320 %.