硅橡胶/有机改性蒙脱土纳米复合材料的性能研究
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摘要
用熔体插层法制备甲基乙烯基硅橡胶(MVQ)/有机改性蒙脱土(OMMT)纳米复合材料并研究其微观结构和性能。结果表明:OMMT改性剂疏水性从优到劣的顺序为I.44P,I.30P,Bengel434,I.44P和I.30P在MVQ中的分散性优于Bengel434;MVQ/OMMT纳米复合材料的物理性能和热稳定性从优到劣的顺序为MVQ/I.44P,MVQ/I.30P,MVQ/Bengel434纳米复合材料;添加40份I.44P的MVQ/I.44P纳米复合材料的100%定伸应力、拉伸强度和撕裂强度比纯胶有较大提高。
Methyl vinyl silicone rubber(MVQ)/organically modified montmorillonite(OMMT)nanocomposites were prepared by melt blending method and their microstructure and properties were studied. The hydrophobicity of OMMT decreased in the order of I. 44 P,I. 30 P,Bengel434. It was found that I. 44 P and I. 30 P had better dispersion than Bengel434 in MVQ. The physical properties and thermal stability of MVQ/I. 44 P nanocomposites were the best, while those of MVQ/Bengel434 nanocomposites were the lowest. When 40 phr OMMT was added,the modulus at 100% elongation,tensile strength and tear strength of MVQ/I. 44 P nanocomposites were significantly increased compared with the pure rubber.
Methyl vinyl silicone rubber(MVQ)/organically modified montmorillonite(OMMT)nanocomposites were prepared by melt blending method and their microstructure and properties were studied. The hydrophobicity of OMMT decreased in the order of I. 44 P,I. 30 P,Bengel434. It was found that I. 44 P and I. 30 P had better dispersion than Bengel434 in MVQ. The physical properties and thermal stability of MVQ/I. 44 P nanocomposites were the best, while those of MVQ/Bengel434 nanocomposites were the lowest. When 40 phr OMMT was added,the modulus at 100% elongation,tensile strength and tear strength of MVQ/I. 44 P nanocomposites were significantly increased compared with the pure rubber.
引文
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[11]谭昊哲,白鸿泽,赵哲,等.阴/阳离子表面活性剂复配改性粘土/橡胶纳米复合材料的结构与性能[J].橡胶工业,2017,64(7):394-398.
[2]Das A,WangDY,St?ckelhuberKW,etal. Rubber-Clay Nanocomposites:SomeRecentResults[J]. AdvancesinPolymer Science,2011,239:85-166.
[3]KongQ,HuY,SongL,etal. InfluenceofFe-MMTon Crosslinkingand ThermalDegradationinSiliconeRubber/Clay Nanocomposites[J]. Polymers for Advanced Technologies,2010,17(6):463-467.
[4]JiaChao,ZhangLiqun,ZhangHao,etal. Preparation,Microstructure,and Property of Silicon Rubber/Organically Modified MontmorilloniteNanocompositesandSiliconRubber/OMMT/FumedSilica TernaryNanocomposites[J]. PolymerComposites,2011,32(8):1245–1253.
[5]KimEung-Soo,KimEunJeong,LeeTaeHwa,etal. Clay ModificationandItsEffectonthePhysicalPropertiesofSilicone Rubber/Clay Composites[J]. Journal of Applied Polymer Science,2012,125(S1):298-304.
[6]Sepehri A,Razzaghi-Kashani M,Ghoreishy M H R. Vulcanization Kinetics of Butyl Rubber–Clay Nanocomposites and Its Dependence onClayMicrostructure[J]. Journalof AppliedPolymerScience,2012,125(S1):204-213.
[7]Sengupta R,Chakraborty S,Bandyopadhyay S,et al. A Short Review onRubber/ClayNanocompositeswithEmphasisonMechanical Properties[J]. Polymer Engineering&Science,2007,47(11):1956-1974.
[8]Das A,St?ckelhuber K W,Jurk R,et al. A General Approach to Rubber–Montmorillonite Nanocomposites:Intercalation of Stearic Acid[J]. Applied Clay Science,2011,51(1-2):117-125.
[9]丁国芳,张长生,石耀刚,等.熔体插层制备硅橡胶/蒙脱土纳米复合材料的性能研究[J].弹性体,2006,16(1):47-50.
[10]Pradhan B,Roy S,Srivastava S K. Synergistic Effect of Carbon Nanotubes and Clay Platelets in Reinforcing Properties of Silicone Rubber Nanocomposites[J]. Journal of Applied Polymer Science,2015,132(15):871-882.
[11]谭昊哲,白鸿泽,赵哲,等.阴/阳离子表面活性剂复配改性粘土/橡胶纳米复合材料的结构与性能[J].橡胶工业,2017,64(7):394-398.