核-壳结构含氟丙烯酸酯乳液的合成与表征

A fluorine-containing polyacrylate copolymer emulsion was synthesized by a seed emulsion polymerization method, in which methyl methacrylate （MMA） and butyl acrylate （BA） were used as main monomers and hexafluorobutyl methacrylate （HFMA） as fluorine-containing monomer. The structure and properties were characterized by Fourier transform infrared spectrum （FT-IR）, transmission electron microscopy （TEM）, particle size analysis, X-ray photoelectron spectroscopy （XPS）, contact angle （CA）, differential scanning calorimetry （DSC） and thermogravimetry （TG） analysis. The FTIR and TEM results showed that HFMA was effectively involved in the emulsion copolymerization, and the formed emulsion particles had a core-shell structure and a narrow particle size distribution. XPS and CA analysis revealed that a gradient concentration of fluorine existed in the depth profile of fluorine-containing emulsion film which was richer in fluorine and more hydrophobic in one side. DSC and TG analysis also showed that a clear core-shell structure existed in the fluorine-containing emulsion particles, and their film showed higher thermal stability than that of fluorine-free emulsion.     

负离子功能纺织品的研究及应用

介绍了负离子的产生与功效、负离子释放材料种类、负离子纺织品的制备方法以及负离子纺织品在净化空气、净化水质与人体保健方面的应用。     

无卤高阻燃共聚酯的合成与应用

以自制的含双官能团的DCF-5为共聚型含磷阻燃剂,在自制助催化剂及防滴落剂的作用下合成无卤高阻燃共聚酯。磷含量、阻燃性能及环保性能测试结果表明:该产品磷含量超过1.7%,极限氧指数高达56%,阻燃等级完全达到V-0级,并通过了SGS公司卤素及RoHS测试。此外,重点阐述了该阻燃聚酯产品在下游各领域实际应用中取得的重大突破和技术优势。     

脱硫石膏砌块的减重研究

为达到脱硫石膏砌块减重的目的,研究了稻草秸秆、锯末、刨花三种混合材料,以及聚丙烯酰胺对脱硫石膏砌块强度及质量的影响.结果表明:掺加三种混合材料均能达到砌块减重的目的,但锯末效果最好.聚丙烯酰胺通过增大脱硫石膏的标准稠度,增加砌块孔隙率达到减重目的,但存在泌水现象.