Interfacial compatibility of nano-SiO2 modified bamboo fiber/vinyl ester resin composites
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摘要: 以乙烯基树脂(VE)为基体,竹纤维(BF)为增强材料,通过偶联剂KH602对纳米SiO2进行改性处理,并利用改性后纳米SiO2分别对竹纤维和树脂进行改性处理,采用真空辅助树脂传递模塑成型工艺(VARTM)制备了BF/VE复合材料。采用FTIR、SEM对改性后纤维和树脂的表面物理化学状态进行表征,结果表明:改性纳米SiO2成功化学接枝到竹纤维表面且分散到树脂基体中,改性纳米SiO2在BF1/VE0.5 (用1.0wt%改性纳米SiO2改性纤维和0.5wt%改性纳米SiO2改性树脂)复合材料中分散更为均匀;采用力学试验机和SEM对复合材料力学、断口和表面形貌进行分析,考察改性纳米SiO2的添加量对BF/VE复合材料力学性能、界面性能的影响。结果表明:BF1/VE0.5复合材料的拉伸、弯曲及冲击强度分别达到最大值49.0 MPa、70.6 MPa和150.4 J/m,与未处理的复合材料相比分别提高了18.9%、26.1%、70.7%。此外,还初步探讨了改性纳米SiO2的界面增强机制。Abstract: Bamboo fiber/vinyl ester resin (BF/VE) composites were prepared via vacuum-assisted resin transfer molding (VARTM). Nano-SiO2 modified by coupling agent KH602 was used to modify BF and VE resin, the surface physical and chemical properties of modified fibers and resin were characterized by scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR). Analysis of SEM and FTIR results show that nano-SiO2 is successfully grafted onto the BF surface and dispersed into the resin matrix; Nano-SiO2 is more evenly dispersed in BF1/VE0.5 (1.0wt% modified nano-SiO2 was used to modify BF and 0.5wt% modified nano-SiO2 was used to modify resin) composites. The mechanical properties, fracture and surface morphologies of BV/VE composites were analyzed by mechanical testing machine and SEM. Effects of the modified nano-SiO2 addition content on the mechanical properties and interfacial properties of BF/VE composites were investigated and analyzed. Through mechanical tests, the tensile, flexural and impact strengths of the BF1/VE0.5 composites reach to the maximum value of 49.0 MPa, 70.6 MPa, and 150.4 J/m, which are increased by 18.9%, 26.1% and 70.7% respectively compared with the untreated composites. Besides, the interface enhancement mechanism of modified nano-SiO2 was preliminarily discussed.
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Key words:
- nano-SiO2 /
- bamboo fiber /
- vinyl ester resin /
- VARTM /
- composites
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表 1 竹纤维/乙烯基树脂(BF/VE)复合材料的改性及命名
Table 1. Modification and naming of bamboo fiber/vinyl ester resin (BF/VE) composites
Name of sample Content of nano-SiO2
modifying bamboo fiber/wt%Content of nano-SiO2
modifying resin/wt%BF/VE 0 0 BF/VE0.5 0 0.5 BF/VE1 0 1 BF/VE1.5 0 1.5 BF0.5/VE 0.5 0 BF0.75/VE 0.75 0 BF1/VE 1 0 BF0.5/VE0.5 0.5 0.5 BF0.75/VE0.5 0.75 0.5 BF1/VE0.5 1 0.5 -
[1] 徐贵海, 任子龙, 贾瑞婷, 等. 苎麻、黄麻织物增强环氧树脂复合材料力学性能的研究[J]. 纤维复合材料, 2015(3):13-17. doi: 10.3969/j.issn.1003-6423.2015.03.004XU Guihai, REN Zilong, JIA Ruiting, et al. Study on the mechanical properties of ramie and jute fabrics reinforced epoxy resin composites[J]. Fiber Composites,2015(3):13-17(in Chinese). doi: 10.3969/j.issn.1003-6423.2015.03.004 [2] 陈康, 何啸宇, 李文豪, 等. 乳酸接枝竹纤维/聚乳酸复合材料的制备与性能表征[J]. 材料导报, 2020, 34(20):20171-20176,20181. doi: 10.11896/cldb.19080192CHEN Kang, HE Xiaoyu, LI Wenhao, et al. Preparation and property characterization of lactic acid grafted bamboo fiber/polylactic acid composite[J]. Materials Reports,2020,34(20):20171-20176,20181(in Chinese). doi: 10.11896/cldb.19080192 [3] 李霞镇, 任海青, 徐明, 等. 中国竹业概况及发展建议[J]. 综合述评, 2008, 6(4):1-4.LI Xiazhen, REN Haiqing, XU Ming, et al. Overview and development suggestions of Chinese bamboo industry[J]. Comprehensive Review,2008,6(4):1-4(in Chinese). [4] 郭豫吉, 邓首哲. 竹纤维性能及发展展望[J]. 中国麻业科学, 2008, 30(6):321-325. doi: 10.3969/j.issn.1671-3532.2008.06.008GUO Yuji, DENG Shouzhe. Performance and development prospect of bamboo fiber[J]. Plant Fiber Sciences in China,2008,30(6):321-325(in Chinese). doi: 10.3969/j.issn.1671-3532.2008.06.008 [5] 李春燕, 吕春艳, 于丽丽, 等. 竹材阻燃处理及对其材性的影响[J]. 世界竹藤通讯, 2019, 17(6):16-20, 24.LI Chunyan, LV Chunyan, YU Lili, et al. Flame retardant treatment of bamboo and its effect on its properties[J]. World Bamboo and Rattan,2019,17(6):16-20, 24(in Chinese). [6] 李红波, 申胜平, 郭建刚. 基于修正剪滞模型的竹纤维/基体界面应力理论[J]. 复合材料学报, 2018, 35(8):2252-2259.LI Hongbo, SHEN Shengping, GUO Jiangang. Stress theory of bamboo fiber/matrix interface based on modified shear lag model[J]. Acta Materiae Compositae Sinica,2018,35(8):2252-2259(in Chinese). [7] 吴楠, 王康建, 刘才容, 等. 竹原纤维的性能及应用[J]. 纺织科技进展, 2016(3):4-5, 7. doi: 10.3969/j.issn.1673-0356.2016.03.002WU Nan, WANG Kangjian, LIU Cairong, et al. Performance and application of bamboo fiber[J]. Progress in Textile Science & Technology,2016(3):4-5, 7(in Chinese). doi: 10.3969/j.issn.1673-0356.2016.03.002 [8] 邢声远, 刘政, 周湘祁. 竹原纤维的性能及其产品开发[J]. 纺织导报, 2004(4):43, 46, 48.XING Shengyuan, LIU Zheng, ZHOU Xiangqi. Properties and product development of bamboo fiber[J]. China Textile Leader,2004(4):43, 46, 48(in Chinese). [9] 林天扬, 王春红, 王威, 等. 碱处理提取竹黄纤维的响应曲面优化[J]. 复合材料学报, 2018, 35(4):876-884.LIN Tianyang, WANG Chunhong, WANG Wei, et al. Response surface optimization for extraction of bamboos fiber by alkali treatment[J]. Acta Materiae Compositae Sinica,2018,35(4):876-884(in Chinese). [10] 唐启恒, 任一萍, 郭文静, 等. 三聚氰胺聚磷酸盐添加量对竹/聚丙烯复合材料燃烧性能的影响[J]. 木材工业, 2020, 34(3):23-26, 31.TANG Qiheng, REN Yiping, GUO Wenjing, et al. Effect of the addition of melamine polyphosphate on the combustion properties of bamboo/polypropylene composites[J]. China Wood Industry,2020,34(3):23-26, 31(in Chinese). [11] 杨峰, 张淑琴, 崔艺铭, 等. 竹材缠绕复合材料推广应用中的耐久性问题[J]. 木材加工机械, 2018, 29(5):30-33.YANG Feng, ZHANG Shuqin, CUI Yiming, et al. Durability problems in promotion and application of bamboo filament wound composite materials[J]. Wood Processing Machinery,2018,29(5):30-33(in Chinese). [12] 陈吉平, 苏佳智, 韩小勇, 等. 复合材料工型肋的RTM工艺模拟与优化[J]. 玻璃钢/复合材料, 2017(7):82-87.CHEN Jiping, SU Jiazhi, HAN Xiaoyong, et al. Simulation and optimization of RTM process of composite rib[J]. Fiber Reinforced Plastics/Composites,2017(7):82-87(in Chinese). [13] 孙赛, 刘木金, 王海, 等. RTM成型工艺及其派生工艺[J]. 宇航材料工艺, 2010(6):21-23. doi: 10.3969/j.issn.1007-2330.2010.06.005SUN Sai, LIU Mujin, WANG Hai, et al. RTM molding process and its derivative process[J]. Aerospace Materials & Technology,2010(6):21-23(in Chinese). doi: 10.3969/j.issn.1007-2330.2010.06.005 [14] SUDARISMAN, MUHAMMAD B N R, AZIZ R H. Tensile and flexural properties of bamboo (Gigantochloa apus)fiber/epoxy green composites[J]. Applied Mechanics and Materials,2015,758:119-123. doi: 10.4028/www.scientific.net/AMM.758.119 [15] ZEGAOUI A, DERRADJI M, MA R-K, et al. Influence of fiber volume fractions on the performances of alkali modified hemp fibers reinforced cyanate ester/benzoxazine blend composites[J]. Materials Chemistry and Physics,2018,213:146-156. doi: 10.1016/j.matchemphys.2018.04.012 [16] 唐启恒, 程海涛, 王戈, 等. 竹纤维组合形态对竹纤维/聚丙烯复合材料性能的影响[J]. 复合材料学报, 2019, 36(11):2561-2567.TANG Qiheng, CHENG Haitao, WANG Ge, et al. Effect of bamboo fiber combination on the properties of bamboo fiber/polypropylene composites[J]. Acta Materiae Compositae Sinica,2019,36(11):2561-2567(in Chinese). [17] SREEKUMAR P A, THOMAS S P, SAITER J M, et al. Effect of fiber surface modification on the mechanical and water absorption characteristics of sisal/polyester composites fabricated by resin transfer molding[J]. Composites Part A: Applied Science and Manufacturing,2009,40(11):1777-1784. doi: 10.1016/j.compositesa.2009.08.013 [18] HUANG J-K, YOUNG W-B. The mechanical, hygral, and interfacial strength of continuous bamboo fiber reinforced epoxy composites[J]. Composites Part B: Engineering,2019,166:272-283. doi: 10.1016/j.compositesb.2018.12.013 [19] WANG D, BAI T, CHENG W, et al. Surface modification of bamboo fibers to enhance the interfacial adhesion of epoxy resin-based composites prepared by resin transfer molding[J]. Polymers (Basel),2019,11(12):2107. [20] WANG F, LU M, ZHOU S, et al. Effect of fiber surface modification on the interfacial adhesion and thermo-mechanical performance of unidirectional epoxy-based composites reinforced with bamboo fibers[J]. Molecules,2019,24(15):2682. [21] DUN M, HAO J, WANG W, et al. Sisal fiber reinforced high density polyethylene pre-preg for potential application in filament winding[J]. Composites Part B: Engineering,2019,159:369-377. doi: 10.1016/j.compositesb.2018.09.090 [22] XIE Y, HILL C A S, XIAO Z, et al. Silane coupling agents used for natural fiber/polymer composites: A review[J]. Composites Part A: Applied Science and Manufacturing,2010,41(7):806-819. doi: 10.1016/j.compositesa.2010.03.005 [23] WANG A, XIAN G, LI H. Effects of fiber surface grafting with nano-clay on the hydrothermal ageing behaviors of flax fiber/epoxy composite plates[J]. Polymers (Basel),2019,11(8):1278. [24] WANG H, XIAN G, LI H. Grafting of nano-TiO2 onto flax fibers and the enhancement of the mechanical properties of the flax fiber and flax fiber/epoxy composite[J]. Composites Part A: Applied Science and Manufacturing,2015,76:172-180. doi: 10.1016/j.compositesa.2015.05.027 [25] 王春红, 王利剑, 任子龙, 等. SiO2-竹纤维协同改性对环氧树脂基复合材料摩擦磨损性能的影响[J]. 复合材料学报, 2019, 7(7):1633-1639.WANG Chunhong, WANG Lijian, REN Zilong, et al. Influence of the synergistic modification of SiO2-bamboo fiber on the friction and wear properties of epoxy resin matrix composites[J]. Acta Materiae Compositae Sinica,2019,7(7):1633-1639(in Chinese). [26] SHEN X, JIA J, CHEN C, et al. Enhancement of mechanical properties of natural fiber composites via carbon nanotube addition[J]. Journal of Materials Science,2014,49(8):3225-3233. doi: 10.1007/s10853-014-8027-4 [27] NGO T T, LAMBERT C A, BEN Z L, et al. Improving the compostability of natural fiber-reinforced thermoset composites with a tertiary oil phase[J]. Journal of Macromolecular Science: Part D—Reviews in Polymer Processing,2013,52(7):710-717. [28] SAHOO S K, MOHANTY S, NAYAK S K. Mechanical, thermal and interfacial characterization of randomly oriented short sisal fibers reinforced epoxy composite modified with epoxidized soybean oil[J]. Journal of Natural Fibers,2016,14(3):357-367. [29] 狄凯莹, 吕佳帅男, 蔡鹏麟, 等. 氟化硅氧烷改性环氧树脂的制备与性能[J]. 精细化工, 2021, 38(04): 774-781.DI Kaiying, LV Jiashuainan, CAI Penglin, et al. Preparation and properties of fluorinated siloxane modified epoxy resin[J]. Fine Chemical Engineering, 2021, 38(04): 774-781 (in Chinese). [30] ASTM. Standard test method for tensile properties of plastics: ASTM D638—14[S]. United States: ASTM International, 2014. [31] ASTM. Standard test methods for flexural properties of unreinforced and reinforced plastics and electrical insulating materials: ASTM D790—17[S]. United States: ASTM International, 2017. [32] ASTM. Standard test methods for determining the izod pendulum impact resistance of plastics: ASTM D256—2010[S]. United States: ASTM International, 2010. [33] WANG H, SUN T, PENG C, et al. Effect of different silane coupling agents on cryogenic properties of silica-reinforced epoxy composites[J]. High Performance Polymers,2016,30(1):24-37. [34] DILFI K F A, CHE Z J, XIAN G J. Grafting of nano-silica onto ramie fiber for enhanced mechanical and interfacial properties of ramie/epoxy composite[J]. Journal of Zhejiang University-Science A,2019,20(9):660-674. doi: 10.1631/jzus.A1900186 [35] 杨芳. 环氧树脂/KH602双重改性水性聚氨酯胶粘剂的合成及性能研究[J]. 涂料技术与文摘, 2015, 36(10):29-33, 38. doi: 10.3969/j.issn.1672-2418.2015.10.007YANG Fang. Synthesis and properties of epoxy resin/KH602 double modified waterborne polyurethane adhesive[J]. Coatings Technology and Abstract,2015,36(10):29-33, 38(in Chinese). doi: 10.3969/j.issn.1672-2418.2015.10.007 [36] 冯跃战. 聚碳酸酯/SiO_2纳米复合材料的制备及力学与热性能研究[D]. 郑州: 郑州大学, 2015.FENG Yuezhan. Preparation and mechanical and thermal properties of polycarbonate SiO2 nanocomposites[D]. Zhengzhou: Zhengzhou University, 2015 (in Chinese).