Nanometer tungsten nitride powders were synthesized as amm onium metatungstate by means of spray drying, calcination, milling and nitration in pure ammonia.
以偏钨酸氨为原料,采用喷雾干燥、焙烧、球磨和纯氨氮化工艺进行了氮化钨粉体制备研究。
2
The room temperature modulus and high temperature modulus of cured samples with low content of onium salt initiator have little change before and after the addition of co-initiator.
碘盐引发剂含量较低时,加入共引发剂的体系的常温及高温模量与未加体系相比没有明显变化;
3
The UV-curable acrylated epoxy prepolymer resin was prepared by reacting E-44 epoxy resin with acrylic acid in the presence of onium salt catalyst.