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ABS/蒙脱土纳米复合材料的制备、结构及性能 总被引:1,自引:1,他引:1
将SAN/蒙脱土纳米复合材料与ABS高胶粉熔融共混得到ABS/蒙脱土纳米复合材料。对纳米复合材料的机械性能进行了表征.结果发现蒙脱土的加入一定程度上提高了ABS的杨氏模量和弯曲模量,但冲击强度有明显的降低。采用XRD、TEM和SEM对纳米复合材料的结构进行表征,结果表明在共混过程中,蒙脱土片层的物理特性导致其基本分布在橡胶粒子的表面.甚至造成粒子的变形和破裂;ABS/蒙脱土纳米复合材料在冲击过程中,蒙脱土片层的分散状态导致橡胶粒子不能发生塑性变形,冲击断面呈多孔形态。 相似文献
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悬浮聚合聚甲基丙烯酸甲酯/蒙脱土纳米复合材料的制备及表征 总被引:3,自引:0,他引:3
采用悬浮聚合法制备了聚甲基丙烯酸甲酯/蒙脱土(PMMA/MMT)纳米复合材料,利用X射线衍射仪、透射电子显微镜和傅里叶变换红外光谱等手段表征了复合材料的结构,研究了不同改性剂对复合材料结构的影响。通过热重分析考察了复合材料的热性能。结果表明,通过悬浮聚合可以成功制备剥离型纳米复合材料,PMMA基体与MMT可以产生较强的相互作用。MMT的加入可以显著提高复合材料的热稳定性。当MMT含量为10%(质量分数,下同)时,PMMA的最大分解温度提高了15℃。 相似文献
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环氧树脂/蒙脱土纳米复合材料的制备及性能 总被引:4,自引:0,他引:4
实验采用长链烷基胺对原始蒙脱土进行有机化处理,再利用环氧树脂对有机蒙脱土插层,制得环氧树脂,蒙脱土纳米复合材料。实验表明,改性环氧树脂的冲击强度有所提高。 相似文献
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聚氨酯/蒙脱土纳米复合材料 总被引:13,自引:3,他引:10
综述了聚氨酯/蒙脱土纳米复合材料的制备、结构表征和热力学性能,对制备过程进行了热力学分析,并对其发展前景进行了讨论。聚氨酯/蒙脱土纳米复合材料是一种新型的有机/无机纳米复合材料。在无机材料含量远低于常规填充量的情况下复合材料就可以具有较好的力学性能、阻隔性,热稳定性能也显著提高。 相似文献
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Both polypropylene (PP) and PP/organo-montmorillonite (OMMT) masterbatch containing antistatic agent (3–9 wt%) were prepared by using co-rotating twin screw extruder followed by injection molding. PP/OMMT masterbatch was prepared by mixing PP, OMMT and maleated PP (PPgMAH). The PP nanocomposites were characterized by using X-ray diffractometer (XRD), differential scanning calorimeter (DSC), thermogravimetry analyzer (TGA), hardness and surface resistivity tests. XRD results indicated that AA could promote the intercalation in PP/OMMT nanocomposites. The decomposition temperature of PP/OMMT/AA nanocomposites is higher than that of PP/OMMT. The hardness, degree of crystallinity and surface resistivity of PP nanocomposites was influenced by the addition of antistatic agent. 相似文献
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Nanocomposites based on polycarbonate (PC) containing sodium montmorillonite (NaMMT) and maleic anhydride grafted styrene-ethylene/butylene-styrene (SEBS-g-MA) were prepared by melt compounding method followed by injection molding. X-ray diffraction (XRD) and transmission electron microscopy (TEM) results revealed the formation of intercalated nanocomposites. Incorporation of SEBS-g-MA into the PC/MMT nanocomposites enhanced ductility and impact strength but slightly reduced tensile strength and stiffness. The glass transition temperature (T g – detected from DMTA) and onset temperature (T onset – detected from TGA) of the PC nanocomposites was increased in the presence of SEBS-g-MA. For this PC/NaMMT system, SEBS-g-MA could act as an effective toughening agent. 相似文献
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聚丙烯/蒙脱土纳米复合材料的制备与性能研究 总被引:1,自引:2,他引:1
以马来酸酐接枝低分子量聚丙烯为相容剂,采用双螺杆挤出机熔融挤出法,制备插层型聚丙烯/有机钠基蒙脱土、聚丙烯/酸化有机化钠基蒙脱土、聚丙烯/钠基蒙脱土3种纳米复合材料,发现有机钠基蒙脱土、酸化有机化钠基蒙脱土和钠基蒙脱土对PP力学性能和燃烧性能均有一定程度的提高。经X射线衍射(XRD)和扫描电子显微镜(SEM)观察,发现有机钠基蒙脱土片层间距增幅最大,复合材料的燃烧性能也有很大提高。 相似文献
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聚丙烯/蒙脱土纳米复合材料的制备与性能研究 总被引:5,自引:0,他引:5
采用十八烷基三甲基氯化铵(OTAC)和十二烷基二甲基卞基氯化铵(DDBAC)改性蒙脱土,以聚丙烯接枝马来酸酐(PP-g-MAH)作相容剂,通过熔融插层法制备了聚丙烯/蒙脱土纳米复合材料(PP/OMMT).结果表明,PP-g-MAH能有效地改善PP与OMMT的相容性,当OTAC改性的蒙脱土(OMMT-O)用量为5wt%、PP-g-MAH用量为10wt%时,PP/PP-g-MAH/OMMT-O纳米复合材料的冲击强度为5.4 KJ/m^2,比纯PP提高了80%,极限氧指数(LOI)由PP的18提高到23.X射线衍射(XRD)测试表明,PP已经插层进入到蒙脱土片层中,部分蒙脱土产生了剥离. 相似文献
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聚氨酯/蒙脱土纳米复合材料的制备及其性能研究 总被引:1,自引:0,他引:1
采用原位聚合方法制备了聚氨酯/蒙脱土纳米复合材料,并对其性能进行了测试,结果表明,TDI的功能基团-NCO与蒙脱土发生接枝反应,当OMT质量分数为2%时,纳米复合材料的综合力学性能达到最佳,耐溶胀性能得到明显的改善,耐热性能有所提高。 相似文献
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Tsu-Hwang Chuang Wenjeng Guo Kuo-Chung Cheng Shih-Wei Chen Hsin-Ta Wang Ynh-Yue Yen 《Journal of Polymer Research》2004,11(3):169-174
Ethylene-vinyl acetate copolymer (EVA)/montmorillonite (MMT) composite was blended with a linear low density polyethylene (LLDPE). X-ray diffraction and transmission electron microscopy (TEM) image of the EVA/MMT composite are in support of an intercalated with partially delaminated nanocomposite. The tensile strength of the nanocomposite is about 20% higher than that without layered silicates, MMT. Furthermore, the incorporation of MMT into polymer blend delays the main thermo-oxidative degradation. Cone calorimeter test points out that the addition of layered silicates into the pristine EVA/LLDPE blend or the blend with a low smoke non-halogen (LSNH) fire retardants, aluminum trihydroxide, and antimony trioxide, can reduce the maximum heat release rate by 30–40%. The smoke suppressing effect of layered silicates is only observed in the nanocomposite containing flame retardants. According to the limiting oxygen index (LOI) data and cone calorimeter test, the addition of the nanodispersed layered silicate and LSNH flame retardants to the EVA/LLDPE exhibits a synergistic effect on the flame retardancy and smoke suppression. 相似文献