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61.
NBR/ORGANOMODIFIED BENTONITE INTERCALATED HYBRIDS AND THEIR EFFECTS ON THE TOUGHNESS OF PVC 总被引:4,自引:0,他引:4
Hybrids of intercalative nitrile-butadiene rubber/organomodified bentonite (NBR/OMB) were prepared by thelatex intercalation technique. Investigation of their mechanical properties and the microstructore of NBR/OMB showed thatthe organomodified bentonite is an effective toughener for NBR. Transmission electronic microscopy (TEM) and X-rnydiffraction (XRD) tests showed that the NBR macromolecule could be intercalated into the galleries of bentonite.Incorporation of NBR/OMB hybrids as tougheners into poly(vinyl chloride) (PVC) results in a substantial increase in theimpact strength of PVC, but little decrease in its tensile strength and flexural strength, compared to the unmodified PVC. 相似文献
62.
Borohydride exchange resin-transition metal(Co,Ni,Cu,)compoundsystems reduced C=C double to C-C single bond in ethanol. 相似文献
63.
64.
65.
Synthesis and Characterization of Novel Orange-emitting Iridium(Ⅲ) Complexes with Diphenylquinoline Ligands Containing Fluorinated Substituent 总被引:1,自引:0,他引:1
Xiao Wei ZHANG Chu Luo YANG Zhong An LI Lin Na ZHU Jin Gui QIN Jia GAO Dong Ge MA 《中国化学快报》2006,17(3):411-414
Three new cyclometalated iridium(m) complexes based on ligands of diphenylquinoline with fluorinated subsfituents were prepared, and characterized by elemental analysis (EA), ^1H NMR, and mass spectroscopy (MS). The photophysical and electrophosphorescent properties of the complexes were briefly discussed. 相似文献
66.
用离子共聚法合成了硅锆层柱蒙脱石(SiZrPILM)和铁锆层柱蒙脱石(FeZrPILM),考察了它们对1,2,4三甲基苯(1,2,4TrMB)歧化反应的催化性能.1,2,4TrMB在催化剂样品上可发生歧化反应和异构化反应,歧化反应选择性达80%以上.随着催化剂预处理温度的提高,1,2,4TrMB转化率下降,歧化反应选择性和四甲基苯(TeMB)中1,2,4,5TeMB含量则升高.催化剂对1,2,4TrMB歧化反应有择形催化作用,1,2,4,5TeMB和间二甲苯、邻二甲苯为主要产物,并且其含量偏离其热力学平衡组成,TeMB中1,2,4,5TeMB的含量在85%以上. 相似文献
67.
68.
A New Efficient Synthesis of p-Nitrocalix[4]arene 总被引:1,自引:0,他引:1
YongLI JiaSongWANG QiWANG DeShanLI 《中国化学快报》2004,15(4):400-403
A new efficient synthesis of p-nitrocalix[4]arene from calix[4]arene by using nitrogen dioxide is described.The compound is an useful intermediates for the introduction of other functional groups to obtain N containing substituted calix[4]arene.The reaction mechanism is briefly discussed. 相似文献
69.
Shujiang Tu Bo Jiang Hong Jiang Yan Zhang Runhong Jia Junyong Zhang Qingqing Shao Chunmei Li Dianxiang Zhou Longji Cao 《Tetrahedron》2007,63(25):5406-5414
Reaction of arylidenemalononitriles, 1,3-indanedione, and mercaptoacetic acid or 4-methylbenzenethiol is successfully carried out using microwave heating. It is an efficient and promising synthetic strategy to build the indenopyridine skeleton. 相似文献
70.
Thermodynamic and Equilibrium Composition Analysis of Using Iron Oxide as an Oxygen Carrier in Nonflame Combustion Technology 总被引:1,自引:0,他引:1
Jiayu Xin Hua Wang* Fang He Zhimin Zhang Faculty of Materials Metallurgical Engineering Kunming University of Science Technology Kunming China 《天然气化学杂志》2005,14(4)
1. Introduction The utilization of fossil fuels causes serious neg- ative impacts on the environment and human life. There are many pollutants such as SOx, NOx and CO2 emission produced from the combustion of coal, oil and natural gas. It has been known for more than 100 years that CO2 is a greenhouse gas and that the release of CO2 from fossil fuel combustion may affect the climate of the earth. In the last years the concern over the aspects of an increased release of greenhouse gases has… 相似文献