高等学校化学研究 ›› 1999, Vol. 15 ›› Issue (2): 110-115.
ZHENG Chen-mou, LIAO Kai-rong, CHEN Xiao-wu
ZHENG Chen-mou, LIAO Kai-rong, CHEN Xiao-wu
摘要: Five 1,3-diisopropoxyaloxanes, i. e., (PriO)RO2AlOAlO2R(OPri) [where R=C16H31(Ⅰ)_C18H35(Ⅱ), _C9H16CH=CHC7H15(Ⅲ), _P(OCH2(C2H5)CHC4H9)2(Ⅳ), and _C12H23(Ⅴ), respectively] were syn thesized by the hydrolysiscondensation of aluminium isopropoxide with water, exchange reaction with relevant acids. They were characterized by elemental analysis, determination of molecular weight, IR,, 27Al NMR. The results show that the coordination number of Al atom in the compounds is 5, they exist in monomers in benzene. The analyses of TG/DTG, DTA indicated that both the thermal hydrolysis stability, thermal stability of these compounds are in the following order:Ⅰ<Ⅱ<Ⅲ<Ⅳ. The viscosity determinations of light calcium carbonate(L-CaCO3)/liquid paraffin suspension systems demonstrated that they had an excellent modification effect on the surface of LCaCO3 filler, the amount needed to form a monomolecular film on the surface of LCaCO3 particles is in the order:Ⅰ<Ⅱ<Ⅲ<Ⅳ.