共查询到19条相似文献,搜索用时 78 毫秒
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水滑石经过对苯二甲酸(TPA)插层后与硅橡胶复合制成复合材料。采用XRD、TG以及其它分析手段对样品进行了表征和研究。结果表明,对苯二甲酸的插层率达到79%以上,而硅橡胶大分子的"插层率"为38%;水滑石/硅橡胶样品的力学性能、邵尔A硬度、热稳定性和阻燃性能均有所改善,水滑石添加量以6%为宜;水滑石的分散程度对硅橡胶复合材料的性能有决定性影响。 相似文献
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氯丁橡胶/蛭石纳米复合材料的研究 总被引:3,自引:0,他引:3
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。 相似文献
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插层法制备聚合物基纳米复合材料研究进展 总被引:5,自引:0,他引:5
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。 相似文献
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制备聚合物纳米复合材料展望 总被引:25,自引:0,他引:25
首先对聚合物纳米复合材料进行了简单的分类,然后按分类介绍了制备各类聚合物纳米复合材料的最新进展,并进行了对比分析,最后对聚合物纳米复合材料今后的发展提出了一些见解。 相似文献
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为了改善阻燃材料的阻燃、力学性能,采用共沉淀法和原位聚合法制备了三聚氰胺甲醛树脂插层水滑石(MF-LDHs)及MF-LDHs/环氧树脂(EP)复合材料(MF-LDHs/EP)。通过正交实验确定了MF-LDHs的最佳制备条件:pH=7,反应温度为80℃,n(水滑石)∶n(三聚氰胺)=1∶1,反应时间为2h。用XRD、FT-IR、TGA、SEM表征了LDH和MF-LDHs,并研究MF-LDHs/EP复合材料的阻燃和力学性能。结果表明,MF-LDHs/EP的氧指数(OI)随MF-LDHs的添加量的增大而增大,当MF-LDHs添加量为40%时,MF-LDHs/EP的氧指数达到27.7%;MF-LDHs可以同时提高复合材料的强度,含20wt%MF-LDHs的MF-LDHs/EP抗拉强度达到47.85MPa,比纯EP提高了13.98%。 相似文献
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综述了高岭土的结构特点、有机改性以及聚合物/高岭土纳米复合材料的制备及性能。 相似文献
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Synthesis and characterization of the hybrid nanocomposite based on polyaniline and NbWO6 nanosheets is reported here. Formation of the nanocomposite is reflected by the increase of interlayer distance of NbWO6 nanosheets and the XRD pattern depicts the formation of NbWO6/polyaniline nanostructure with interlayer separations of 1.6 nm and 0.9 nm which is consistent with a bilayer and a monolayer of polyaniline molecules within the gallery of nanosheets. Transmission electron micrographs, infrared spectra and thermograms support the formation of the hybrid nanocomposite. Electrochemical investigations on the nanocomposite reveal the presence of polyaniline and the data is compared also with those of polyaniline and host. 相似文献
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Polar Influence of the Organic Modifiers on the Structure of Montmorillonite in Epoxy Nanocomposites
Fu-Chun Liu En-Hou Han Wei Ke Nan Tang Junbiao Wan Guilai Yin Jingwei Deng Kangwen Zhao 《材料科学技术学报》2013,29(11):1040-1046
The epoxy nanocomposites with similar amines (CH3(CH2)17NH2 and CH3(CH2)17N(CH3)301) treated montmorillonite clays have been investigated by wide-angle X-ray scattering, transmission electron microscopy (TEM), differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). Different nanocomposite structures, intercalation and exfoliation were formed by the reaction of octadecyltrimethylammonium chloride-exchanged and octadecylamine-exchanged clays with epoxy resin and phenalkamine as the curing agent, respectively. Results showed that the exfoliated nanocomposite can be obtained when octadecylamine with the lower polarity was used as a modifier. However, the intercalated nanocomposite can be obtained when octadecyltrimethylammonium chloride with higher polarity was used as a modifier. 相似文献
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自制一种有机改性蒙脱土(OMMT),采用双辊共混法与三元乙丙橡胶复合,得到了具有高强度、低硬度等超常力学性能的乙丙橡胶/有机蒙脱土纳米复合材料。透射电镜观察表明,制备出了半剥离型纳米复合材料,力学性能测试显示,在低填充量(15份以下)时,纳米复合材料的各项力学性能远超过同含量下高耐磨碳黑体系的。在填充量为10份时,有机土填充体系的断裂强度为15.85 MPa,是碳黑填充体系(6.57 MPa)的2.4倍,是纯橡胶体系(2.05 MPa)的7倍多;撕裂强度也高于碳黑体系和纯胶体系的;而此时纳米复合材料的邵A硬度仅为58.5,比相同强度下碳黑补强体系的低近10。 相似文献
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A new intercalation compound based on Mg/Al-layered double hydroxide (Mg/Al-LDH) with polymerizable acrylamide (AM) which cannot be synthesized by direct coprecipitation reaction, was achieved via in-situ hydrothermal method with the existence of glycine. The well-crystallized AM-intercalated Mg/Al-LDH was characterized by XRD, FTIR, DTA and scanning electronic microscopy. Basal spacing of the Mg/Al-LDH intercalation compound is 1.32 nm. Polymerization of AM incorporated into Mg/Al-LDH interlayer space occurs after 160 °C heat treatment, which indicates that the preparation of PAM/LDH nanocomposite is feasible via in-situ polymerization route. 相似文献
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