图书来源:二元合金相图及中间相晶体结构 二元合金相图及中间相晶体结构
作 者:唐仁政 田荣璋
出版时间:2009-05
定 价:320元
图书ISBN:978-7-81105-831-4
出版单位:中南大学出版社
Shaohua Dong 1,2),Weijian Han 1,2),Yongming Luo 1),Tong Zhao 1) and Caihong Xu 1) 1) Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China 2) Graduate School of the Chinese Academy of Sciences,Beijing 100039,China
摘 要:Three new borazine derivatives,2,4,6-tri(allylamino)borazine (CH 2 =CHCH 2 NHBNH) 3 (1),2,4,6-tri(3ethynylanilino)borazine (CH≡CC 6 H 4 NHBNH) 3 (2),and 2,4,6-tri(4-propargyl oxyanilino)borazine (CH≡ CCH 2 OC 6 H 4 NHBNH) 3 (3) were synthesized by reaction of 2,4,6-trichloro-borazine Cl 3 B 3 N 3 H 3 (TCB) with corresponding primary amines,respectively.Their thermal behavior was studied by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).These molecules were easily crosslinked via thermal polymerization of reactive ethynyl or vinyl groups.The pyrolytic residues of borazines were investigated by X-ray photoelectron spectroscopy (XPS),powder X-ray diffraction (XRD),and scanning electron microscopy (SEM).The analytic results indicated that B-C-N ceramics were formed upon pyrolysis of the borazines under an inert atmosphere.
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