MCNTs对乙烯基酯树脂固化及其拉挤玻纤复合材料层间粘合性能影响

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (8): 55-60.

MCNTs对乙烯基酯树脂固化及其拉挤玻纤复合材料层间粘合性能影响

陈尚能, 申明霞^*, 陆凤玲, 曾少华

河海大学力学与材料学院,南京211100

收稿日期:2018-02-28 出版日期:2018-08-28 发布日期:2018-08-28
通讯作者: 申明霞(1966-),女,博士,教授,主要从事微/纳米粒子改性和聚合物复合材料制备、性能、界面及其应用方面的研究,mxshen@hhu.edu.cn。
作者简介:陈尚能(1993-),男,硕士,主要从事碳纳米管改性乙烯基酯树脂力学性能方面的研究。
基金资助:
企事业单位委托科技项目(1066-817019616);中央高校基本科研业务费专项资金(2016B45414)

EFFECT OF MCNTS ON THE CURE OF VINYL ESTER RESIN AND INTERLAMINER ADHESION OF SUCH PULTRUDED GLASS FIBER COMPOSITES

CHEN Shang-neng, SHEN Ming-xia^*, LU Feng-ling, ZENG Shao-hua

College of Mechanics and Materials, Hohai University, Nanjing 211100, China

Received:2018-02-28 Online:2018-08-28 Published:2018-08-28

摘要/Abstract

摘要： 为提高乙烯基酯树脂(VE)拉挤复合材料层间剪切强度(ILSS),采用工业级多壁碳纳米管(MCNTs),在交变搅拌速度下将其分散在VE中,制备低成本含MCNTs的VE玻纤拉挤复合材料,并评估MCNTs自由基捕捉效应和拉挤速度对ILSS和热性能的影响。结果表明:适量补充引发剂总量可补偿由于MCNTs自由基捕捉效应而损失的自由基,提高含MCNTs拉挤复合材料的ILSS和玻璃化转变温度(T_g);与未加MCNTs的VE拉挤复合材料相比,添加0.1wt% MCNTs的VE拉挤复合材料ILSS提升了近20%,T_g提高了8.1 ℃;拉挤速度降低可提高VE的固化程度,进一步提高了复合材料的层间粘合性能和耐热性。MCNTs、VE和玻璃纤维三者之间通过化学或物理交联相互作用,改善了复合材料的界面结合性能。

关键词: 多壁碳纳米管, 捕捉自由基, 乙烯基酯树脂, 拉挤工艺, 层间剪切强度, 引发剂补偿

Abstract: Benefiting from good mechanical properties, superior corrosion resistance and low cost, vinyl ester resin (VE) is widely used to yield corrosion resistant products. However, the disadvantage of low interlaminar shear strength (ILSS) still exists in the pultruded glass fiber-reinforced VE composites. To resolve the above problem, industrial multi-wall carbon nanotubes (MCNTs) were firstly dispersed in VE with the help of mechanical stirring at alternating speeds, and then glass fiber-reinforced VE composites containing MCNTs (MCNTs/GF/VE) were fabricated by pultrusion at low cost. The effect of free radical trapping effect of MCNTs on the ILSS and the thermal property of pultruded composites were evaluated. The results showed that proper supplementary of initiators can compensate for the loss of free radicals due to the free radical trapping effect of MCNTs, and ultimately increased the ILSS and glass-transition temperature (T_g) of MCNTs/GF/VE composites. With the incorporation of 0.1wt% MCNTs into VE, the ILSS and T_g of composites were increased by nearly 20% and 8.1 ℃, respectively, as compared with those of the composites without MCNTs. Moreover, the interlayer adhesion and heat resistance of the composites could be further improved with the decrease of pull-speed due to the improved curing degree of VE. The interfacial adhesion of the composites was enhanced by chemical or physical crosslinking interactions among MCNTs, VE and glassfibers.

Key words: MCNTs, trap free radical, VE, pultrusion, ILSS, initiator compensation

中图分类号:

TB332

陈尚能, 申明霞, 陆凤玲, 曾少华. MCNTs对乙烯基酯树脂固化及其拉挤玻纤复合材料层间粘合性能影响[J]. 玻璃钢/复合材料, 2018, 0(8): 55-60.

CHEN Shang-neng, SHEN Ming-xia, LU Feng-ling, ZENG Shao-hua. EFFECT OF MCNTS ON THE CURE OF VINYL ESTER RESIN AND INTERLAMINER ADHESION OF SUCH PULTRUDED GLASS FIBER COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2018, 0(8): 55-60.

参考文献

[1] 李鹏, 杨小平, 王成忠, 等. 乙烯基酯树脂的微观结构及其力学性能研究[J]. 高分子学报, 2004, 1(6): 812-817.
[2] Yang J, Loos M R, Feke D L, et al. The effect of dispersants on the tensile properties of carbon nanotube/vinyl ester composites[J]. Polymer Composites, 2012, 33(3): 412-419.
[3] Zhou Y, Pervin F, Lewis L, et al. Experimental study on the thermal and mechanical properties of multi-walled carbon nanotube-reinforced epoxy[J]. Materials Science & Engineering A, 2007, 452-453 (657-664).
[4] Gojny F H, Schulte K. Functionalisation effect on the thermo-mechanical behaviour of multi-wall carbon nanotube/epoxy-composites[J]. Composites Science & Technology, 2004, 64(15): 2303-2308.
[5] 刘华, 茆凌峰, 钱建华, 等. 碳纳米管对阻燃乙烯基酯树脂及其FRP性能的影响[J]. 玻璃纤维, 2016(6): 9-14.
[6] Zhu J, Imama, Crane R, et al. Processing a glass fiber reinforced vinyl ester composite with nanotube enhancement of interlaminar shear strength[J]. Composites Science & Technology, 2007, 67(7): 1509-1517.
[7] 方鹏飞, 罗敏, 刘汉明, 等. 火焰法碳纳米管/乙烯基酯树脂复合材料的制备、结构与性能[J]. 武汉大学学报(理学版), 2009, 55(4): 442-446.
[8] Chen H Y, Huang H B, Wang J H. Effects of carbon nanotube functionalization on the mechanical properties of vinyl ester composites[J]. Advanced Materials Research, 2011, 233-235: 2315-2318.
[9] 曾少华, 申明霞, 李佳骐, 等. MWCNT对玻纤复合材料界面黏合性及其影响机制[J]. 南京工业大学学报(自科版), 2017(5): 27-32.
[10] Zeng S, Shen M, Duan P, et al. Effect of silane hydrolysis on the interfacial adhesion of carbon nanotubes/glass fiber fabric-reinforced multiscale composites[J]. Textile Research Journal, 2016.
[11] Zeng S, Shen M, Duan P, et al. Effect of ultrasonic-assisted impregnation parameters on the preparation and interfacial properties of MWCNT/glass-fiber reinforced composites[J]. e-Polymers, 2017.
[12] 张丽, 邓爱民, 穆锐. 环氧-醋酸乙烯酯共聚物乳液的制备与性能研究[J]. 沈阳理工大学学报, 2008, 27(1): 80-82.
[13] 邓海岸. 乙烯基酯树脂玻璃钢拉挤工艺研究[D]. 武汉: 武汉理工大学, 2001.
[14] Sung Y T, Han M S, Song K H, et al. Rheological and electrical properties of polycarbonate/multi-walled carbon nanotube composites[J]. Polymer, 2006, 46(15): 5656-5661.
[15] Tzounis L, Kirsten M, Simon F, et al. The interphase microstructure and electrical properties of glass fibers covalently and non-covalently bonded with multiwall carbon nanotubes[J]. Carbon, 2014, 73(7): 310-324.