共查询到20条相似文献,搜索用时 62 毫秒
1.
无机纳米粒子复合乳液的研究进展 总被引:1,自引:0,他引:1
对纳米S iO2复合乳液的合成制备作了详细的综述,介绍了共混法、插层法、溶胶-凝胶法和原位分散聚合法,概述了纳米S iO2对复合材料性能的影响及其特性和发展。 相似文献
2.
3.
4.
5.
综述了采用无机纳米粒子改性环氧树脂的国内外研究进展,改性方法包括原位聚合法、溶液共混法、溶胶-凝胶法、层间插入法等。 相似文献
6.
本文综述了近年来无机纳米粒子复合塑料的研究进展,并提出功能型无机纳米复合塑料将成为纳米塑料的研究方向。 相似文献
7.
8.
9.
《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
10.
11.
Polyacrylate/nano-TiO2 composite latex was prepared via double in-situ polymerization using acrylamide (AM), vinyl acetate (VAc), butyl acrylate (BA) and methyl methacrylate (MMA) as monomers, tetrabutyl titanate (Ti(OBu)4) as precursor of TiO2. The morphology, structure and distribution of composite latex were characterized by Transmission Electron Microscope (TEM), Fourier Transform Infrared Spectroscopy (FTIR), Dynamic Light Scattering (DLS) and X-Ray Diffraction (XRD). The thermal stability, anti-yellowing and antibacterial properties of composite latex were also investigated. The results showed that nano-TiO2 consisted in polyacrylate latex and it was located on the surface of latex particles. The average particle size of polyacrylate/nano-TiO2 composite latex was 156.6 nm, which was bigger than that of pure polyacrylate (125.1 nm). The introduction of nano-TiO2 improved the thermal stability, anti-yellowing and antibacterial properties of the latex film. At last, the polyacrylate/nano-TiO2 composite latex was applied in leather finishing. Compared with polyacrylate latex, the properties of the leather finished by polyacrylate/nano-TiO2 composite latex were enhanced: water vapor permeability increased by 58% and water uptake decreased by 3.52%. 相似文献
12.
Fluorescence non-radiative energy transfer experiments were used to study latex blend films composed of high molar mass poly(butyl acrylate-co-methyl methacrylate) (PBA-co-MMA) and much lower molar mass PBA-co-MMA latex of the same chemical composition (50:50 BA:MMA by weight). These blends take advantage of the strong chain length dependence of Tg so that the particles consisting of oligomeric polymer (“low-M”) have a much lower Tg than the corresponding high-M latex. This type of blend represents a useful strategy for obtaining latex coatings with a reduced VOC content. Here we report on experiments which follow the rate at which the low-M polymer mixes via diffusion with the high-M polymer in the latex films. The high-M latex are doubly labeled, containing both donor and acceptor dyes covalently bound to the PBA-co-MMA backbone. Diffusion of the unlabeled low-M polymer into this phase dilutes the dyes, increasing their separation and lowering the quantum efficiency for energy transfer. 相似文献
13.
14.
15.
聚合物基纳米无机复合材料的最新研究进展 总被引:3,自引:0,他引:3
聚合物基纳米无机复合材料是一种性能优异的新型复合材料,已成为材料科学的新热点。本文综述了此种材料的特性、制备方法及应用,并概述了聚合物基纳米无机复合材料的发展前景及发展过程中应注意的问题。 相似文献
16.
17.
聚丙烯酸酯—聚有机硅氧烷复合乳液的合成与性能 总被引:11,自引:0,他引:11
以在丙烯酸甲酯、丙烯酸丁酯、甲基丙烯酸、八甲基环四硅氧烷(D4)和乙基七甲基环四硅氧烷(VD4)为共聚单体,在85℃下采用一次投料合成了稳定的聚丙烯酸酯-聚有机硅氧迷雾复合乳液。实验结果表明,当VD4/D4摩尔比为0.008,有机硅质量分类小于20%时,单体转化率均高于82%,胶乳粒径为50-60nm,且粒径分布均匀;当有机硅质量分数大于25%时,聚合过程中有凝聚物产生,乳液不稳定,胶膜的拉伸强度 相似文献
18.
19.