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

Abstract

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

CLC Number:

TB332

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.

References

[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.