Five mono longchain alkyl polyethylenepolyamine cationic surfactants were prepared by first of all reaction of higher fatty alcohol first with chlorosulfonic acid (or H 2SO 4) then with polyethylenepolyamine.
以高级脂肪醇为原料 ,经硫酸化后生成硫酸半酯 ,然后与多乙烯多胺反应 ,合成了五种单长链烷基多乙烯多胺类阳离子表面活性剂。
The Si/N/C nanopowder with a wide composition range was synthesized from hexamethyldisilazane and ammonia by laser induced gas phase reactions under the orthogonal design of laser power density and two reactant flow rates.
选择廉价的六甲基乙硅胺烷——（Ｍｅ＿３Ｓｉ）＿２ＮＨ和氨气为原料进行激光诱导气相反应，通过正交变化激光功率密度及反应气流量，制备出具有较宽组分变化范围的Ｓｉ／Ｎ／Ｃ纳米粉。
Organic silane hexamethyldisilazane and ammonia were used as the reactants to produce Si_3N_4/SiC nanopowders.
选择廉价的六甲基乙硅胺烷((Me_3Si)_2NH)和氨气为原料,采用正交设计试验参数的方法,研究了激光功率密度、六甲基乙硅胺烷蒸汽流量、氨气流量对粉体化学组成的影响。
