橡胶纳米复合材料的制备方法及研究进展

阐述了橡胶纳米复合材料4种制备方法的特点以及研究进展,分析了各种方法的优缺点,并对其应用前景进行了展望.     

聚合物纳米复合材料研究进展

对聚合终年纳米复合材料作了简单分类,介绍了不同类型聚合物纳米复合材料的制备方法,性能研究及最新进展,并对该类材料的发展进行了展望。     

橡胶／粘土插层纳米复合材料的研究进展

综述了橡胶／粘土插层纳米复合材料的制备方法及性能特征。重点介绍了溶液插层法、乳液插层法和熔体插层法及相关研究进展。评价了各种制备技术的优缺点,提出了橡胶／粘土插层纳米复合材料的发展趋势。     

聚合物基纳米复合材料的结构与性能

叙述了由插层复合法、溶胶-凝胶法和纳米微粒直接共混法制备的聚合物基纳米复合材料的结构和性能。     

聚合物基纳米复合材料的制备

本文详细介绍了目前国内外聚合物纳米复合材料的各种制备方法及其特点和使用范围，并分析聚合物基纳米复合材料的应用价值。     

尼龙6纳米复合材料研究进展

综述近年来国内外尼龙6(PA6)纳米复合材料的研究现状。基于各种不同制备方法,将其分为PA6／聚合物分子复合材料、PA6／无机层状物纳米复合材料和PA6／其它无机纳米粒子复合材料三类;重点介绍了这三类PA6纳米复合材料的性能、制备等的研究进展。     

聚烯烃粘土纳米复合材料的制备现状及进展

介绍了聚丙烯，聚乙烯粘土纳米复合材料的制备方法，并对聚烯烃粘土纳米复合材料可能的发展趋势加以探讨。     

无机纳米复合高分子材料的制备

无机纳米复合高分子材料是由无机纳米材料和有机高分子复合而成，着重介绍了溶胶-凝胶（Sol-Gd）法、插层复合法、共混法和原位聚合法等主要制备方法。     

粘土橡胶纳米复合材料研究进展

简要概述了粘土的有机改性机理、橡胶/粘土纳米复合材料的制备方法、结构与表征和橡胶/粘土纳米复合材料的研究进展.     

聚乙烯纳米复合材料的制备方法及其研究进展

综述了聚乙烯纳米复全材料的发展概况及最新研究动态。重点介绍了共混法、插层复合法、溶胶-凝胶法（Sol—gel）三类聚乙烯纳米复合材料的制备方法，分析了各种制备方法的优缺点：共混法简单易行，成本低，但纳米粒子在基体中的分散性较差；插层复合法原料来源丰富，但难以形成完全剥离型的结构；Sol—gel能使纳米粒子均匀分散在基体中，且反应条件温和，但前驱体与基体树脂的相容性较差。目前存在的制备方法较多，但都存在一些不足，还有待作进一步的研究。     

橡胶的纳米增强及纳米复合技术

分析了橡胶增强中几个主要因素的作用和地位,认为粒径是橡胶增强的第一要素,粒径因素包括部分表面活性因素和结构性因素,纳米增强是同效增强的必要条件,并指出炭黑和白炭黑增强橡胶属于纳米复合材料范畴。综述了橡胶基纳米复合材料的研究进展,包括炭黑和白炭／橡胶纳米复合材料、粘土／橡胶纳米复合材料、原位二氧化硅／橡胶纳米复合材料、丙烯酸金属盐／橡胶纳米复合材料、纤维／橡胶纳米复合材料等。总结了第一种复合材料所涉     

橡胶纳米复合材料研究进展

综述了国内外炭黑／橡胶、白炭黑／橡胶和黏土／橡胶三大类橡胶纳米复合材料的研究进展,对材料的性能特点和制备技术的优缺点进行了总结。     

The role of rubber characteristics in preparing rubber/clay nanocomposites by melt compounding

Rubber/organic clay (OC) nanocomposites were produced by melt blending. Polar or unsaturated matrices (e.g., NBR and SBR) could easily enter into OC layers, whereas using nonpolar unsaturated rubber (EPDM), without other additives' help, intercalation structure could not be directly obtained. For the EPDM system, an intercalated structure was observed in presence of stearic acid (SA) for composites composed of SA and OC. Transmission electron microscopy observation showed that the dispersion of clay in nonpolar saturated rubber matrix was much poorer than that in polar or unsaturated matrix. The same effect of polar matrix was confirmed by comparison between IIR/OC and BIIR/OC systems. Moreover, using OC pretreated by SA (S‐OC), the dispersion of clay was obviously improved in the investigated nanocomposites, due to the intercalation of SA into OC interlayers. Especially in the nonpolar saturated EPDM system, the intercalation structure could be easily observed. Relative to the corresponding nanocomposites using OC, tensile strengths and the stresses at low strain of NBR and SBR based nanocomposites with S‐OC were significantly improved; while with EPDM nanocomposite, using S‐OC, only tensile strengths were improved but the stresses at low strain were almost the same, which should be related to the different interfacial force between OC and different rubber matrices. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

原位乳液聚合制备聚苯乙烯丁二烯橡胶/凹凸棒石纳米复合材料

采用原位乳液聚合制备了聚苯乙烯丁二烯橡胶(SBR)/凹凸棒石(AT)纳米复合材料。凹凸棒石的存在一定程度上降低了乳液聚合速率,但对最终聚合产物的分子质量及分子质量分布影响不大。凹凸棒石以长0.5～5μm、直径为20～50nm的棒状纤维均匀的分散在SBR基体中。在硫化过程中,凹凸棒石纤维与橡胶形成互穿网络结构,增加了橡胶的交联密度。随着凹凸棒石的填充量增加,纳米复合材料的300%定伸应力和拉伸强度与纯SBR相比均提高了20%～100%,其补强效果明显高于等量的炭黑N330,还表现出良好的耐磨性能。     

Comparative behavior of in situ silica generation in saturated rubbers: EPDM and hydrogenated natural rubber

Role of carbon‐carbon double (C?C) bonds content and their position in ethylene‐propylene diene ter‐polymer (EPDM), hydrogenated natural rubber (HNR) and natural rubber (NR) on in situ silica formation using tetraethoxysilane (TEOS) as a silica precursor is comparatively investigated. Glass transition temperature (T_g ) reflecting rubber chain flexibility is found as an important factor for in situ silica generation via swelling method. Despite of similar solubility parameters, NR has higher TEOS‐swelling degree resulting in the higher in situ silica content (30.8 phr) than EPDM (3.50 phr) and HNR (10.4–17.6 phr) due to the higher T_g of EPDM and HNR providing the less chain flexibility to be swollen in TEOS solution. The morphological analysis implies that C?C bonds in saturated rubbers may be agglomeration sites for in situ silica particles. For practical applications, saturated rubbers containing in situ silica/NR vulcanizates showed the improvement of mechanical properties and resistance of thermal and ozone degradation. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44748.     

丁基橡胶/有机黏土纳米复合材料的结构和性能

采用溶液插层法制备了丁基橡胶／有机黏土纳米复合材料,并用透射电子显微镜和X射线衍射仪研究了该纳米复合材料的形态结构。结果表明,丁基橡胶／有机黏土纳米复合材料是插层型的纳米复合材料。与丁基橡胶相比,该纳米复合材料具有优异的力学性能和气体阻隔性能,并且这2种性能均随有机黏土用量的增加而增强。填料的形状会对该纳米复合材料的气体阻隔性能产生影响。     

原位合成丙烯酸盐改性氯化聚乙烯制备吸水膨胀橡胶的研究

通过金属氢氧化物(或氧化物)和丙烯酸(AA)的中和反应，在氯化聚乙烯(CPE)中原位合成丙烯酸盐(MeAA)，加入DCP硫化后得到吸水膨胀橡胶。研究吸水膨胀橡胶制备过程中的化学反应以及混炼胶的硫化特性和硫化胶的吸水膨胀性能及物理性能。结果表明，原位合成MeAA改性的CPE具有良好的物理性能和吸水膨胀性能，一价金属盐硫化胶的吸水膨胀性能比二价金属盐更为优异。     

Polylactide/clay nanocomposites: A fresh look into the in situ polymerization process

Polylactide nanocomposites with organo‐modified montmorillonite presenting a high degree of clay exfoliation were prepared via in situ polymerization by using an improved methodology. The morphology of the nanocomposites was studied by WAXD and SAXS. The size distribution of clay aggregates in the polylactide matrices was quantitatively determined by SAXS applying the stacked‐disk model. The analyses show high degree of delamination of the silicate yielding exfoliated polylactide nanocomposites even at high concentration of clay (>10 wt %). L ‐lactide conversions measured by ATR‐FTIR were determined to be no less than 94% after 3 h of reaction in all polymerizations. DSC measurements were performed to study the influence of the clay content on the thermal behavior of the prepared nanocomposites. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012