熔融插层制备聚合物-层状硅酸盐纳米复合材料研究进展

概述了近年来国内外聚合物—层状硅酸盐纳米复合材料(PLSN)制备领域的研究状况，详细评述和分析了PLSN熔融插层法的特点，指出熔融插层是一种高效和可行的制备聚合物—层状硅酸盐纳米复合材料的方法。     

熔融插层法制备聚合物/层状硅酸盐纳米复合材料的调控因素

综述了熔融插层法制备聚合物／层状硅酸盐纳米复合材料的调控因素，分析了插层过程中复合体系、加工工艺、热力学和动力学因素对聚合物插层与层状硅酸盐片层剥离分散的影响．并展望了聚合物／层状硅酸盐纳米复合材料的研究前景。     

聚合物/层状硅酸盐纳米复合材料阻燃性研究进展

根据层状硅酸盐(黏土)可增强聚合物纳米复合材料阻燃性能的研究进展,本文综述了聚合物/层状硅酸盐纳米复合材料的制备方法,指出熔融插层是一种高效可行、环境友好的制备方法;从硅酸盐在纳米复合材料中产生的阻碍效应、自由基诱导效应,网状结构三个方面详细讨论了层状硅酸盐在纳米复合材料中的阻燃机理;最后,指出目前聚合物/层状硅酸盐纳米复合材料在阻燃研究中尚存在的问题,并对其开发应用前景进行了展望。     

插层法制备聚合物基纳米复合材料研究进展

聚合物基纳米复合材料具有常规聚合物基复合材料所没有的结构、形态以及较常规聚合物基复合材料具有更优异的力学性能、耐热性能和气体液体阻隔性能等而显示出重要的科学意义和应用前景。本文综述插层法制备聚合物基纳米复合材料近几年的研究进展情况，总结了层状硅酸盐结构、插层剂选择、制备方法等问题。对制备过程进行了热力学和动力学分析，介绍了纳米复合材料表征方法，并对纳米复合材料的性能和应用进行了讨论。     

聚合物/层状硅酸盐纳米复合材料

聚合物/层状硅酸盐(PLS)纳米复合材料是近10年迅速发展起来的新交叉科学.由于聚合物纳米复合材料具有常规聚合物复合材料所没有的结构、形态以及较常规聚合物复合材料更优异的物理力学性能、耐热性和气体液体阻隔性能等,因而显示出重要的科学意义和应用前景.综述了聚合物/层状硅酸盐纳米复合材料的制备、结构表征、性能和应用情况,最后展望了其应用前景.     

氯丁橡胶／蛭石纳米复合材料的研究

以蛭石和氯丁橡胶为原料，采用溶液插层法将氯丁橡胶插入蛭石层间，制备聚合物层状硅酸盐纳米复合材料，用X射线衍射仪对样品进行分析测试，结果表明，得到了剥离型氯丁橡胶／蛭石纳米复合材料。     

PLS纳米复合材料

综述了纳米技术的发展概况、纳米复合材料的分类及特性 ,并对 PL S纳米复合材料 (聚合物 /层状硅酸盐纳米复合材料 )的研究进展、性能及应用前景加以总结 ,讨论了 PLS纳米复合材料的阻燃性能、结构和制备方法。PL S纳米复合材料作为新型高性能材料具有诱人的应用前景。     

聚合物/层状硅酸盐纳米复合阻燃材料进展概述

介绍了聚合物/层状硅酸盐纳米复合材料的制备方法、结构特点和表征方法,同时对聚合物/层状硅酸盐纳米复合材料的阻燃机理和阻燃性能的应用做了简要说明.     

聚合物／层状硅酸盐纳米复合阻燃材料进展概述

介绍了聚合物／层状硅酸盐纳米复合材料的制备方法、结构特点和表征方法，同时对聚合物／层状硅酸盐纳米复合材料的阻燃机理和阻燃性能的应用做了简要说明。     

插层法制备聚合物/粘土纳米复合材料及其应用进展

概述了聚合物／粘土纳米复合材料插层制备的新进展，根据插层机理和方法的差别，将插层法分为三类：（1）单体插层复合；（2）溶液中聚合物插层复合；（3）熔融聚合物插层复合。重点提出了利用双螺杆挤出机制备聚合物基纳米复合材料的新方法，展望了聚合物／粘土纳米复合材料的开发及其应用前景。     

Polymer Layered Silicate Nanocomposites

Polymer nanocomposites with layered silicates as the inorganic phase (reinforcement) are discussed. The materials design and synthesis rely on the ability of layered silicates to intercalate in the galleries between their layers a wide range of monomers and polymers. Special emphasis is placed on a new, versatile and environmentally benign synthesis approach by polymer melt intercalation. In contrast to in-situ polymerization and solution intercalation, melt intercalation involves mixing the layered silicate with the polymer and heating the mixture above the softening point of the polymer. Compatibility with various polymers is accomplished by derivatizing the silicates with alkyl ammonium cations via an ion exchange reaction. By fine-tuning the surface characteristics nanodispersion (i. e. intercalation or delamination) can be accomplished. The resulting polymer layered silicate (PLS) nanocomposites exhibit properties dramatically different from their more conventional counterparts. For example, PLS nanocomposites can attain a particular degree of stiffness, strength and barrier properties with far less inorganic content than comparable glass- or mineral reinforced polymers and, therefore, they are far lighter in weight. In addition, PLS nanocomposites exhibit significant increase in thermal stability as well as self-extinguishing characteristics. The combination of improved properties, convenient processing and low cost has already led to a few commercial applications with more currently under development.     

Experimental investigations on fused deposition modelling of polymer-layered silicate nanocomposite

Polymer-layered silicate (PLS) nanocomposites exhibit enhanced mechanical and thermal properties when compared with pristine polymers and macrocomposites. Utilizing the benefits of PLS nanocomposite in the fused deposition modelling (FDM) process is of great significance. It could assist to overcome the limitations imposed by availability of materials in the FDM process; the need to widen the range of materials is critical in order to fabricate parts with improved mechanical properties. Experimental investigations were carried out on the development and processing of PLS nanocomposite for the FDM process. Organically modified montmorillonite and polymer pellets were used to develop the nanocomposite. The mechanical properties and mesostructure were investigated experimentally. The nanocomposite was utilised to produce filament and was found to be suitable for use in FDM. Significant improvements in mechanical properties, reduced porosity and better neck formation were observed for the developed nanocomposite which marks the material as a promising candidate for the FDM process. The developed nanocomposite may reduce the gap for availability of materials for FDM in terms of improved mechanical properties. The work will assist to promote low-cost FDM processed parts for direct applications.     

聚合物/粘土纳米复合材料研究进展

聚合物和无机物在纳米尺度上相复合,将使各自的优势得到最充分的体现,聚合物/粘土纳米复合材料的研究已成为高分子材料科学领域的前沿,显示出重要的科学意义和良好的应用前景.本文从制备方法、插层剂的选择、PCN结构、插层理论、性能和应用等方面综述了近年来聚合物/粘土纳米复合材料的研究进展,并对其制备方法提出展望.     

乳液插层法制聚合物/蒙脱土纳米复合材料

概述了一种聚合物 /蒙脱土纳米复合材料的新制备方法———乳液插层法。该插层法分为两大类 :聚合物乳液插层和单体乳液插层 ,这两大类又可按各自不同的插层机理进行分类。叙述了蒙脱土和复合材料的结构 ,以及复合材料的一些特性。并对聚合物乳液 /蒙脱土纳米复合材料的插层过程进行了热力学和动力学分析 ,指出将实验室技术产业化是今后发展方向     

熔融插层制备聚苯乙烯/蛭石纳米复合材料的结构与性能研究

通过熔融插层法制备了聚苯乙烯(PS)/蛭石纳米复合材料,测试了复合材料的力学性能、燃烧性能和熔体流动速率,并对不同蛭石含量的PS/蛭石纳米复合材料进行了对比。结果表明,当蛭石含量为3%时,与纯PS相比,熔体流动速率只降低了4%,即仍具有良好的加工性能,同时拉伸强度、断裂伸长率和缺口冲击强度分别提高了3.4%、77%和41%。氧指数测试结果表明,蛭石的加入有利于提高材料的阻燃性能。     

聚苯乙烯/粘土纳米复合材料研究进展

介绍了采用各种插层荆插层处理蒙脱土并用插层聚合、熔融插层法制备聚苯乙烯／粘土纳米复合材料及其结构特性、性能的研究进展．并对乳液聚合法制备聚苯乙烯／粘土纳米复合材料及其性能进行了简单介绍。     

原位聚合制备不饱和聚酯树脂/高岭土纳米复合材料及性能表征

利用超声法制备了高岭土-DMSO插层复合物前驱体,采取二步取代,原位聚合制备了不饱和聚酯树脂/高岭土纳米复合材料,并用XRD、FT-IR等手段对材料结构进行了表征,研究了纳米复合材料的阻燃性能。结果表明:当DMSO分子插入到高岭土层间时,d(001)值由0.717 nm增大到1.12 nm,插层率为91%,而不饱和聚酯树脂取代DMSO进入高岭土层间后,表征层状结构的d(001)特征衍射峰完全消失,高岭土内表面羟基吸收特征峰(3651 cm-1)和DMSO两个甲基的对称和反对称伸缩振动的吸收特征峰消失。燃烧实验表明这种材料相比纯树脂具有更好的阻燃性能。     

插层复合法制备聚合物/粘土纳米复合材料研究进展

本文对聚合物／粘土纳米复合材料的合成、结构、性能和增强机理进行了评述。粘土经有机化处理和聚合物复合后的材料显示出与众不同的性能,它的硬度、力学强度、阻隔性能、热稳定性能和阻燃性能有显著改善,聚合物／粘土纳米复合材料有着广泛的应用前景。     

Effect of material and processing parameters on mechanical properties of Polypropylene/Ethylene–Propylene–Diene–Monomer/clay nanocomposites

Polypropylene/Ethylene–Propylene–Diene–Monomer (PP/EPDM) blends are well known for having a combination of favourable mechanical properties. In this paper, addition of organoclay to PP/EPDM to make PP/EPDM nanocomposites with enhanced mechanical properties is studied. PP/EPDM/organoclay nanocomposites were prepared using a lab scale twin-screw extruder. Maleic anhydride grafted polypropylene (PP-g-MA) was used to enhance the intercalation/exfoliation process and to create good adhesion at the polymer/polymer and polymer/filler interfaces. Taguchi method was employed to deign the experiments and optimize material and processing parameters for optimized mechanical properties. Organoclay (NC) and compatibilizer content were selected as material parameters and the main processing variables were feeding rate and average shear rate (RPM). X-ray diffraction (XRD), Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) were used to study the microstructure of the nanocomposites samples. It was observed that NC content and shear rate in extruder improved the tensile strength and modulus. Another important result was the insignificant effect of NC content on impact strength while increasing shear rate first increased and then decreased the impact strength.