聚丙烯/蒙脱土纳米复合材料的研究进展

对聚丙烯(PP)／蒙脱土(MMT)纳米复合材料的国内外研究进展进行综述,介绍了PP/MMT纳米复合材料的制备原理和制备方法。包括原位插层聚合法、聚合物溶液插层法、聚合物熔融插层法、溶胶一凝胶法,重点介绍了聚合物熔融插层法的研究进展。聚合物熔融插层法具有操作简单、无需处理过多溶剂的优点,避免了环境和能源问题,更易于工业化。最后对PP／MMT纳米复合材料的未来发展进行了展望。     

丙烯酸酯类聚合物/蒙脱土纳米复合材料的研究

用烷基胺盐对钠基蒙脱土(MMT)进行有机处理,采用插层聚合法制备了聚甲基丙烯酸甲酯(PMMA)／MMT及聚(甲基丙烯酸甲酯／丙烯酸丁酯)[P(MMA／BA)]／MMT纳米复合材料,探讨了MMT含量、MMA／BA配比对复合材料性能的影响。结果表明,MMT可提高复合材料的冲击强度和耐热性,MMT含量为2％时复合材料的综合性能最佳,BA可明显提高复合材料的冲击强度,MMA／BA配比为10／1时复合材料的综合性能较好。     

聚合物/蒙脱土纳米复合材料的研究进展

介绍了蒙脱土的结构特点，聚合物／蒙脱土复合材料的帛备方法和分类，讨论了各种聚合物／蒙脱土纳米复合材料的性能特点和应用。聚合物／层状硅酸盐蒙脱土纳米复合材料具有优异的性能，是目前材料学科研究的热点之一。     

插层法制备聚合物/蒙脱土纳米复合材料的研究进展

对插层法制备聚合物／蒙脱土纳米复合材料的国内外研究现状作了简要的回顾，并对聚合物／蒙脱土纳米复合材料的力学性能、结晶性能、阻隔性能、热稳定性、各向异性及阻燃性能进行了综述。     

熔融插层法制备聚合物/蒙脱土纳米复合材料

综述了熔融插层法制备聚合物,蒙脱土纳米复合材料的新进展。熔融插层法制备聚合物,蒙脱土纳米复合材料具有设备简单、无单体限制和不需要溶剂的优点,并从热力学角度探讨了熔融插层法制备聚合物,蒙脱土纳米复合材料的不足以及改进措施。     

熔融插层法制备聚合物/纳米蒙脱土的研究进展

简要介绍了熔融插层法制备聚合物／纳米蒙脱土复合材料的研究进展。结合热力学和动力学的分析，概括了熔融插层法一些理论上的研究进展。总结了目前关于熔融插层法制备聚合物／纳米蒙脱土复合材料及其表征的最新研究成果。     

聚合物/蒙脱土纳米复合材料的制备与性能

简要介绍蒙脱土晶体结构及聚合物／蒙脱土纳米复合材料形成机理．重点综述纳米复合材料的制备方法、性能、发展方向和应用前景等。     

聚合物／蒙脱土纳米复合材料研究进展

介绍和分析了目前聚合物／蒙脱土纳米复合材料研究的热点。包括有关带有极性基团的插层剂、反应性插层剂和带有POSS基团的插层剂的研究,以及有无相容剂存在下熔融插层制备纳米复合材料方面的研究。讨论了插层剂和相容剂的作用及其机理,并展望了本领域的发展方向。     

聚乙烯/蒙脱土纳米复合材料的制备及性能研究

以蒙脱土／十六烷基三甲基溴化铵作为前驱物负载Ziegler-Natta催化剂，通过插层原位聚合的方法制备了聚乙烯／蒙脱土纳米复合材料。对聚乙烯／蒙脱土纳米复合材料的制备规律进行了研究。用透射电镜、扫描电镜、XRD，DSC等手段研究了结构和性能的相互关系，以及蒙脱土的含量对复合材料熔点与结晶行为的影响。研究表明：蒙脱土的片层结构被破坏，并以纳米级均匀分散在聚合物基体中。蒙脱土的质量分数为3％左右时，聚乙烯／蒙脱土纳米复合材料具有优良的综合性能。     

橡胶/蒙脱土纳米复合材料的制备技术进展

橡胶／蒙脱土纳米复合材料具有优异的特性，如补强性、阻隔性和透明性，因而成为橡胶工业中研究的重点方向之一。总结了近年来国内外关于橡胶／蒙脱土纳米复合材料的研究报道，重点介绍了橡胶／蒙脱土纳米复合材料的结构、制备技术和插层机理。     

聚合物/蒙脱土纳米复合材料的研究进展

聚合物/蒙脱土纳米复合材料是近十年来研究最为广泛的复合材料之一,优异的热力学性能,独特的气 液阻隔性及阻燃性赋予它广泛的工业应用前景。本文就该复合材料在蒙脱土的有机改性处理、制备、制备条件对性能的影响、表征方法及手段、材料性能特征及应用等方面作一些简单总结。     

插层复合法制备聚合物纳米复合材料的研究进展

聚合物／蒙脱土纳米复合材料是近十年来研究最为广泛的新交叉科学。由于纳米复合材料具有常规聚合物复合材料所没有的结构和形态，其具有优异的力学性能、电磁性和敏感性能等，因而有重要的科学意义和应用前景。笔者对纳米复合材料在蒙脱土的有机化改性处理、熔融插层和应用方面作了简单综述。同时，指出了纳米复合材料在应用研究上的几个主要问题。评价了各种制备技术的优劣和工业价值，提出了聚合物纳米复合材料的发展趋势。     

Effect of organophilic montmorillonite on polyurethane/montmorillonite nanocomposites

Different kinds of organophilic montmorillonite cotreated by cetyltrimethyl ammonium bromide (CTAB) and aminoundecanoic acid (AUA) were synthesized and applied to prepare polyurethane/montmorillonite nanocomposites via solution intercalation. The results of wide‐angle X‐ray diffraction (WAXD) and transmission electron microscopy showed that, for the montmorillonite modified with CTAB and CTAB/AUA (molar ratio of 1/2), an ordered intercalated nanostructure was derived, while for the montmorillonite treated with AUA, a disordered nanostructure was derived. The tensile properties of the polyurethane (PU) nanocomposites showed higher enhancement relative to PU matrix. TG showed that there is some enhancement in degradation behavior between the nanocomposites and PU matrix. DMTA results showed that nanocomposites from some organophilic montmorillonites showed a much higher storage modulus below and above glass transition temperature, while the nanocomposites from montmorillonite treated by AUA show an even lower storage modulus. The loss curves showed that the main glass transition temperature of PU was improved to some extent for the nanocomposites. The water absorption of PU and nanocomposites was also studied and the difference in reduction was thoroughly analyzed. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 2536–2542, 2004     

Poly(etherimide)/montmorillonite nanocomposites prepared by melt intercalation

A novel aromatic amine organo‐modifier synthesized in our previous work was used to treat montmorillonite (MMT) and the organo‐modified MMT was used to prepare poly(etherimide) (PEI)/MMT nanocomposites by a melt intercalation method. MMT treated by this amine exhibited large layer‐to‐layer spacing and a high ion‐exchange ratio (>95%). The nanocomposites were characterized with X‐ray diffraction (XRD), transmission electron microscopy (TEM), dynamic mechanical analysis, a universal tester, thermogravimetric analysis, and by differential scanning calorimetry. The results of XRD and TEM showed that the nanocomposites formed exfoliated structures even when the MMT content was 10 wt %. When the MMT content was below 3 wt %, the PEI/MMT nanocomposites were strengthened and toughened at the same time. The nanocomposites also showed marked decreases in coefficient of thermal expansion and solvent uptake. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 1857–1863, 2003     

三元乙丙橡胶/蒙脱土纳米复合材料Ⅰ制备、表征及流变性能

用熔融插层和丙烯酰胺作为桥联剂成功地制备了三元乙丙橡胶（EPDM）／蒙脱土（MMT）纳米复合材料。X射线衍射（XRD）和透射电镜（TEM）的结果表明，形成的纳米复合材料为剥离型。研究了丙烯酰胺在该纳米复合材料制作中的桥联作用及材料的流变性能。结果表明：选择丙烯酰胺作为桥联剂，完全可以在熔融状态下制备EPDM／MMT纳米复合材料，随着有机粘土加入量的增加，复合体系的粘度降低，加工性能改善，而交联密度在经历最大值后下降，有机蒙脱土具有延迟硫化和促进硫化的双重功效。复合材料的力学性能有了极大的提高，这些性能与蒙脱土的精细分散结构有着密切的关系。     

Structure and properties of polybutadiene/montmorillonite nanocomposites prepared by in situ polymerization

Polybutadiene (PB)/Montmorillonite nanocomposites (NCs) were prepared by in situ polymerization through the anionic polymerization technique. The effects of treating method of organophilic MMT (OMMT), the type of OMMT, and the solvent used in polymerization were studied. The structure and properties of NCs were characterized using X‐ray Diffraction (XRD), transmission electron micrograph (TEM), H‐NMR spectrum, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dynamic mechanical analysis (DMA). The consumption of BuLi was varied with different treating methods. The molecular weight distribution of PB added with OMMT (DK1) was wide, and the molecular weight distribution became narrow when OMMT‐DK1B and DK4 were added. OMMT did not disperse stably in cyclohexane, but could form a homogeneous solution in toluene and xylene. XRD and TEM showed that exfoliated NCs were obtained by in situ polymerization through the anionic polymerization technique. From the H‐NMR spectrum of PB and PB/OMMT NCs, it could be seen that the content of 1, 2 units of PB increased ～100%, while 1, 4 units decreased when 6.2 wt % of OMMT was added. The results of DSC and DMA indicated that T_g and T_dc were increased when compared with those of PB. Both storage modulus and loss modulus were increased with the addition of OMMT, and tan δ was decreased. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 99: 3615–3621, 2006     

PA6/蒙脱土熔融插层复合材料结构与性能分析

通过熔融共混法插层复合制备了聚酰胺(PN)6／蒙脱土纳米复合材料，测试了力学性能并对不同蒙脱土含量的PA 6／蒙脱土纳米复合材料进行了对比。实验表明，通过熔融插层可使PN 6基体插层于蒙脱土中，所得到的复合材料的性能较PN 6有很大提高。蒙脱土特殊的层状结构使得利用熔融共混在机械力的作用下插层到纳米级复合材料成为可能。     

Novel polyether polyurethane/clay nanocomposites synthesized with organicly modified montmorillonite as chain extenders

A kind of novel polyether polyurethane (PU)/clay nanocomposite was synthesized using poly(tetramethylene glycol), 4,4′‐diphenylmethane diisocyanate (MDI), 1,6‐hexamethylenediamine, and modified Na⁺‐montmorillonite (MMT). Here, organicly modified MMT (O‐MMT) was formed by applying 1,6‐hexamethylenediamine as a swelling agent to treat the Na⁺‐MMT. The X‐ray analysis showed that exfoliation occurred for the higher O‐MMT content (40 wt %) in the polymer matrix. The mechanical analysis indicated that, when the O‐MMT was used as a chain extender to replace a part of the 1,2‐diaminopropane to form PU/clay nanocomposites, the strength and strain at break of the polymer was enhanced when increasing the content of O‐MMT in the matrix. When the O‐MMT content reached about 5%, the tensile strength and elongation at break were over 2 times that of the pure PU. The thermal stability and the glass transition of the O‐MMT/PU nanocomposites also increased with increasing O‐MMT content. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 6–13, 2006     

熔体插层制备硅橡胶/蒙脱土纳米复合材料的性能研究

通过熔体插层成功制备了硅橡胶／蒙脱土纳米复合材料，通过XRD和SEM分析可知，在所选择的两步工艺务件下。蒙脱土被硅橡胶分子链插层剥离。获得剥离型的纳米复合材料。同时，测试了其力学性能和耐热性能。所得到的复合物的性能较纯硅橡胶有很大的提高，且与气相法白炭黑填充体系的性能相当。并且研究了硅烷偶联剂对填料-硅橡胶之间的增强作用。