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综述了国内外分散聚合方法包覆无机纳米粒子的研究进展,包括包覆工艺、包覆机理、关键技术及发展趋势。重点分析了聚合温度、引发剂、单体、稳定剂类型和用量、分散介质、无机纳米粒子、包覆时间等因素对包覆效果的影响,结果表明,提高无机纳米粒子和聚合物的亲和性以及无机纳米粒子的分散性是分散聚合包覆无机纳米粒子的关键。 相似文献
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聚合物\无机纳米粒子复合材料研究进展 总被引:36,自引:6,他引:36
本文介绍了纳米粒子的一些特性及聚合物基纳米复合材料的研究现状,着重介绍了无机纳米粒子填充聚合物复合材料的制备方法、性能及应用前景。 相似文献
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《化学推进剂与高分子材料》2015,(6):32-38
介绍了用无机纳米粒子改性聚氨酯弹性体的制备方法,综述了纳米Si O2、纳米Zn O、纳米蒙脱土、纳米Ca CO3、纳米Ti O2、碳纳米管以及其他无机纳米粒子改性聚氨酯弹性体的研究进展,指出了无机纳米粒子改性聚氨酯弹性体目前存在的问题。 相似文献
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张雪娇 《化学工业与工程技术》2007,28(5):44-46
讨论了刚性无机粒子在增韧聚苯乙烯塑料中的增韧机理、影响因素及其应用。通过讨论得出结论,无机纳米粒子的出现,将会大大促进无机刚性粒子在塑料增韧方面的应用。 相似文献
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Ni-P基纳米化学复合镀研究现状 总被引:10,自引:1,他引:10
阐述了Ni-P基纳米化学复合镀层沉积机理、结构、性能特点及影响因素。提出了目前纳米化学复合镀存在的主要问题,如镀液的稳定性、纳米粒子的分散性。综述了纳米化学复合镀的研究现状,并对今后的研究提出了建议。 相似文献
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纳米粒子改性环氧树脂玻璃化转变温度的研究 总被引:2,自引:1,他引:1
采用示差扫描量热分析(DSC)研究了纳米A l2O3粒子改性的环氧树脂基体玻璃化转变温度与纳米粒子含量之间的关系以及纳米粒子含量对改性体系固化剂用量的影响。结果表明,随着纳米粒子含量的提高,改性树脂的玻璃化转变温度逐渐下降,由纯树脂的224℃下降到182.5℃(纳米粒子用量30%,固化剂添加量70%)。并且纳米粒子的加入会影响树脂基体的固化反应。达到玻璃化转变温度峰值时的固化剂用量并非按照改性体系中环氧树脂含量等当量比加入,而是与纳米粒子含量有关,纳米粒子含量越高,达到玻璃化转变温度峰值时固化剂用量越少。 相似文献
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Nano ZnO particles were synthesized by treating zinc oxalate with glycol and amines. The treated nano particles were in-situ grafted on methacrylic acid/butyl acrylate/methyl methacrylate via solution polymerization technique to prevent aggregation in the coating. The characterizations of grafted and treated nano ZnO particles were performed by transmission electron microscopy, atomic force spectroscopy, X-ray diffraction and particle size analysis. The outcome of this surface modification and varying concentrations of nano ZnO has helped in establishing it as an antibacterial additive in hygienic coating. 相似文献
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A novel Nano/submicrofiber catalyst was prepared via electrospinning technology from poly (vinyl pyrrolidone) (PVP) and nano‐TiO2. First, nano‐TiO2 particles were added into the mixture of ethanol and deionized water, the mass ratio of ethanol and deionized water was 1 : 1, the TiO2 suspension was obtained after 1 h with ultrasonic treatment and centrifugal effect, Then PVP was added into the above‐mentioned suspension and the content of PVP in the sol was 28%. The TiO2/PVP solution was electrospun with different voltage. The effects of the content of TiO2 and electrospinning voltage on diameter of nano/submicrofiber were studied. The nano/submicrofiber catalyst was characterized by scanning electron microscopy, transmission electron microcopy, X‐ray diffraction, and Fourier transform infrared. The results show that the diameter of nano/submicrofiber increases with an increase of the content of nano‐TiO2 and decreases with the increase of electrospinning voltage. The analytical result showed that the nano‐TiO2 particles were well dispersed in the matrix of PVP, moreover, the crystal type of nano‐TiO2 was a mixture of anatase and rutile and the diameter of nano‐TiO2 particles in the nano/submicrofiber is in the range of 20–60 nm and the nano‐TiO2 particle was monodisperse, and the nano‐TiO2 particle and PVP molecule was connected by a hydrogen bonding. This nano/submicrofiber catalyst has a high efficiency on degradation on CH2O. 56.8 percent of CH2O was degraded under ultraviolet radiation in 80 min when the content of nano‐TiO2 is 20% in nano/submicrofibers. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 相似文献
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SiO2粒子具有许多特性,利用它来制备纳米复合材料,可以得到许多具有特殊性能或性能更加优异的复合材料。本文综述了金属/SiO2、无机/SiO2、聚合物/SiO2纳米复合材料的研究进展。 相似文献