Micro-morphology and mechanical properties of organic montmorillonite/polyurethane elastomer composite

被引：0
|
作者：
Chen Y. [1 ,2 ]
Yue C. [2 ]
Li Z. [2 ]
Teng C. [3 ]
Ma Y. [2 ]
机构：
[1] Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin
[2] School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin
[3] Center for Disease Prevention and Control, Xiangfang District, Harbin
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2019年 / 36卷 / 09期
关键词：
Mechanical properties; Octadecyl trimethyl ammonium chloride; Organic montmorillonite (OMMT); Polyurethane elastomer; Prepolymer method;
D O I：
10.13801/j.cnki.fhclxb.20181122.004
中图分类号：
学科分类号：
摘要：
Sodium montmorillonite (MMT) was modified by octadecyl trimethyl ammonium chloride (OTAC) via cation exchange and organic montmorillonite (OMMT) was got. Polyurethane elastomer (PUE) was synthesized taking 4,4'-diphenylmethane diisocyanate (MDI) and polypropylene glycol (PPG) as the raw materials and 1,4-butanediol (BDO) as chain extender, and then OMMT/PUE composite was prepared by the prepolymer method. The results of FTIR and XRD show that the characteristic peaks of -CH2(2 921 cm-1 and 1 469 cm-1) appear and indicate that the new groups have been introduced into the layers of OMMT, the intercalation quantity of OTAC is about 24% by the heat resistance of MMT and OMMT, and the interlayer spacing of OMMT is 0.7 nm larger than that of MMT. The analytical results of SEM and XRD of OMMT/PUE composites reveal that proper OMMT disperses evenly in the PUE matrix, and OMMT is peeled completely. This phenomenon can be explained by two main reasons, i.e. one is the strong interaction between OTAC molecular and soft segments of PUE, and the other is the interface interaction amid the active groups of OMMT and PUE matrix. The test results of mechanical properties of OMMT/PUE composites display that the maximum tensile strength, elongation at break and breaking tensile strength of OMMT/PUE composite are 37%, 28% and 34% higher than that of PUE matrix, respectively, when the content of OMMT is 3wt%, and the mechanical properties of OMMT/PUE composites are significantly improved. © 2019, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
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页码：2086 / 2092
页数：6
相关论文
共 25 条
  • [1] Li Z.H., Hu Y., Wang X., Preparation and properties of expansive flame retardant polyurethane elastomer/montmorillonite composites, Polyurethane, 5, pp. 72-74, (2011)
  • [2] Xie Y.L., Zhang M., Zhou Y.H., Progress in organic modification of montmorillonite, Chemical Industry and Engineering Progress, 31, 4, pp. 844-851, (2012)
  • [3] Peng S., Iroh J.O., Synthesis and characterization of crosslinked polyurethane/clay nanocomposites, Journal of Applied Polymer Science, 133, 17, (2016)
  • [4] Berta M., Saiani A., Lindsay C., Et al., Effect of clay dispersion on the rheological properties and flammability of polyurethane-clay nanocomposite elastomers, Journal of Applied Polymer Science, 112, 5, pp. 2847-2853, (2009)
  • [5] Barick A., Tripathy D.K., Preparation and characterization of thermoplastic polyurethane/organoclay nanocomposites by melt intercalation technique: Effect of nanoclay on morphology, mechanical, thermal, and rheological properties, Journal of Applied Polymer Science, 117, 2, pp. 639-654, (2010)
  • [6] Cai Y.B., Hu Y., Song L., Et al., Synthesis and characterization of thermoplastic polyurethane/montmorillonite nanocomposites produced by reactive extrusion, Journal of Materials Science, 42, 14, pp. 5785-5790, (2007)
  • [7] Grigoriadi K., Giannakas A., Barkoula N.M., Thermomechanical behavior of polymer/layered silicate clay nanocomposites based on unmodified low density polyethylene, Polymer Engineering & Science, 53, 2, pp. 301-308, (2013)
  • [8] Heidarian M., Shishesaz M.R., Study on effect of duration of the ultrasonication process on solvent-free polyurethane/organoclay nanocomposite coatings: Structural characteristics and barrier performance analysis, Journal of Applied Polymer Science, 126, 6, pp. 2035-2048, (2012)
  • [9] Chen Y.F., Chu H.Y., Wang B.T., Micro-morphology and mechanical properties of modified MMT/MBAE composite, Acta Materiae Compositae Sinica, 35, 6, pp. 1407-1413, (2018)
  • [10] Gao Y., Wang X.P., Liu M.J., Et al., Effect of montmorillonite on carboxylated styrene butadiene rubber/hindered phenol damping material with improved extraction resistance, Materials and Design, 58, pp. 316-323, (2014)
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