采用马来酸酐(MAH)接枝改性氧化石墨烯(GO)制得MAH功能化改性GO(MAH-GO),采用乳液共混法制备MAH-GO/天然胶乳(MAH-GO/NR)复合材料。考察MAH-GO用量对MAH-GO/NR复合材料力学性能、分散相态与动态加工性能的影响。结果表明:MAH成功接枝改性GO;MAH-GO含量为1.0%时,复合材料的拉伸强度为25.63MPa,较NR的14.13MPa提高了81.4%,且分散较为细致均匀;随着MAH-GO含量的增加,复合材料的Payne效应越明显,且剪切变稀行为更显著。MAH接枝改性GO,有助于提高填料在橡胶基体中的分散及复合材料抵抗变形的能力,可制备高性能的石墨烯/橡胶复合材料。
Maleic anhydride (MAH) functionally-modified GO(MAH-GO) was prepared by grafting modified graphene oxide (GO) with MAH,and MAH-GO/natural latex (MAH-GO/NR) composites were further prepared by emulsion blending.The effects of MAH-GO dosage on mechanical properties,dispersion phase and dynamic machining properties of MAH-GO/NR composites were investigated.The results showed that,MAH was successfully grafted into GO and the tensile strength of the 1.0% MAH-GO/NR composite reached to 25.63MPa,which increased by 81.4% compared with14.13MPa of NR;moreover,the dispersion was more detailed and uniform.With the increase of the MAH-GO content,the more obvious the Payne effect of the MAH-GO/NR composite material was,and the more significant the behavior of the shear thinning presented.MAH grafted into modification of GO was helpful to improve the dispersion of filler in rubber matrix and the deformation resistance of composites,which contributed to prepare high-performance graphene/rubber composites.
[1] Novoselov K,Geim A,Morozov S,et al.Electric field effect in atomically thin carbon films[J].Science,2004,306(5696):666-669.
[2] Geim A K.Graphene:status and prospects[J].Science,2009,324(5934):1530-1534.
[3] Meyer J C,Geim A K,Katsnelson M I,et al.The structure of suspended graphene sheets[J].Nature,2007,446(7131):60-63.
[4] Huang Shasha,Hou Jiarui,Yin Jian,et al.Anti-blooming effect of graphene oxide on natural rubber latex composite films[J].Composites Science and Technollogy,2019,174(12):142-148.
[5] Zhan Yanhu,Lavargon Marino,Buonocore Giovanna,et al.Enhancing electrical conductivity of rubber composites by constructing interconnected network of self-assembled grapheme with latex minxing[J].Journal of Materials Chemistry,2012,22(21):10464-10468.
[6] Zhong Bandchao,Luo Yongyue,Chen Wanjun,et al.Immobilization of rubber additive on graphene for high-performance rubber composites[J].Journal of Colloid and Interface Sciencs,2019,550(8):190-198.
[7] Park Sungjin,An Jinho,Potts Jeffrey R,et al.Hydrazine-reduction of graphite-and grapheneoxide[J].Carbon,2011,49(9):3019-3023.
[8] 王昊,张辉,张继华,等.非共价键表面修饰的石墨烯/聚合物复合材料研究进展[J].材料工程,2018,46(7):44-52.
[9] Zheng Long,Jerrams Stephen,Xu Zongchao,et al.Enhanced gas barrier properties of graphene oxide/rubber composites with strong interfaces constructed by graphene oxide and sulfur[J].Chemical Engineering Jouranal,2020,383(3),123100.
[10] Fernandez M J,Guardia L,Paredes J I,et al.Vitamin C is an ideal substitute for hydrazine in the reduction of graphene oxide suspensions[J].The Joumal of Physical Chemistry C,2010,114(14):6426-6432.
[11] Yan Han,Li Hao,Li Wen,et al.Probing the damping property of three-dimensional graphene aerogels in carboxylated nitrile butadiene rubber/polyurethane blend[J].Polymer Engineering and Science,2020,60(1):61-70.
[12] Malas A,Pal P,Das C K.Effect of expanded graphite and modified graphite flakes on the physical and thermo-mechanical properties of styrene butadiene rubber/polybutadiene rubber (SBR/BR) blends[J].Materials & Design,2014,55(3):664-673.
[13] Payne A R.The dynamic properties of carbon black-loaded natural rubber vulcanizates.Part Ⅰ[J].Journal of Applied Polymer Science,1962,6(19):57-63.
[14] 王梦蛟.填充聚合物-填料和填料-填料相互作用对填充硫化胶动态力学性能的影响(续1)[J].轮胎工业,2000,20(11):670-677.
[15] 方庆红,宋博,高雨,等.纳米石墨/天然橡胶复合材料的应力软化与动态性能[J].复合材料学报,2014,6(31):1446-1451.
基金资助
山西省高等学校科技创新项目(2020L0653)
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