Reinforcement of epoxy resin composites with fluorinated carbon nanotubes
Reinforcement of epoxy resin composites with fluorinated carbon nanotubes
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DOI：
10.1016/j.compscitech.2014.12.002
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发表时间：
2015-02-11
影响因子：
9.1
通讯作者：
Chukov, D. I.
中科院分区：
文献类型：
--
作者：
Kharitonov, A. P.;Simbirtseva, G. V.;Chukov, D. I.
采用傅里叶变换红外光谱（FTIR）、热重分析（TGA）、差示扫描量分析（DSC）和电子显微镜对添加未改性和氟化碳纳米管的环氧树脂（二缩水甘油酯醚双酚a型）聚合物复合材料进行了研究。测试了复合材料的拉伸和弯曲强度。碳纳米管氟化显著地（以2.26倍的倍数）增加了其比表面。氟化不影响碳纳米管在260℃以下的热稳定性，也不会使填充复合材料的热稳定性恶化。在150℃下将0.1 wt%的氟化碳纳米管插入聚合物基体，可使复合材料的抗拉强度提高到89.6±4.1 MPa（与未填充的复合材料相比提高35%）。填充0.2% wt%氟化碳纳米管的复合材料在150℃下的抗弯强度增加到199.7 +/- 4.8 MPa（与未填充的复合材料相比增加58%）。获得的配筋值超过了所有现有文献报道的基于环氧树脂的环氧复合材料的配筋数据，这些环氧树脂与当前项目中使用的环氧树脂相似。与氟化碳纳米管相比，未改性碳纳米管在提高复合材料拉伸和弯曲强度方面的效果较差。在聚合物基体中插入氟化碳纳米管可提高玻璃化温度，但不影响复合材料的热稳定性。利用电子显微镜技术对复合材料的切削表面进行了研究。增强复合材料可应用于多个行业：航空，汽车，风力涡轮机螺旋桨叶片，用于生产游艇和船只等(C) 2014 Elsevier Ltd.。版权所有。
Epoxy resin (diglycidyl ether bisphenol-A type) polymer composites with added unmodified and fluorinated carbon nanotubes (CNTs) were studied by FTIR, TGA, DSC and electron microscopy. Composites tensile and flexural strength were measured. CNTs fluorination markedly (by a factor of 2.26) increased its specific surface. Fluorination did not influence CNTs thermal stability below 260 degrees C and did not worsen thermal stability of filled composites. Insertion of 0.1 wt% of CNTs fluorinated at 150 degrees C into polymer matrix resulted in the composite tensile strength increase to 89.6 +/- 4.1 MPa (35% increase as compared with unfilled composites). Flexural strength of composite filled with 0.2 wt% fluorinated at 150 degrees C CNTs was increased to 199.7 +/- 4.8 MPa (+58% as compared with unfilled composite). Obtained reinforcement values exceeded all the available literature reinforcement data reported for epoxy composites based on epoxy resins similar to used in the current project. Unmodified CNTs were less effective in composite tensile and flexural strength improvement as compared with fluorinated CNTs. Insertion of fluorinated CNTs into a polymer matrix increased glassy temperature and did not influence the composites thermal stability. Surface of composites cuts was studied by electron microscopy technique. The reinforced composites can be applied in several industries: aviation, automotive, wind turbine propeller blades, for producing yachts and boats etc. (C) 2014 Elsevier Ltd. All rights reserved.