摘要
采用沉降法测定蓖麻油在ＡｌＮ流延浆料中的分散效果．结果表明：分散剂添加量为粉体重量的１～１．５％时，对本文所述的ＡｌＮ粉料而言分散效果最好．应用傅立叶红外光谱分析法，研究蓖麻油在ＡｌＮ流延浆料中的分散机理．结果表明：蓖麻油分子上的羰基与ＡｌＮ中的氮原子形成ｎ－π共轭结构，能有效地吸附在ＡｌＮ陶瓷颗粒表面，使蓖麻油长链分子分散在ＡｌＮ颗粒周围，产生良好的空间位阻分散．获得了均匀的，流动性好的ＡｌＮ流延浆料．
Castor oil was used as the dispersant of AlN tape casting slurry, its efficiency was evaluated by the method of deposition. The result indicates that when the amount of castor oil is around 1%similar to1.5% of the weight of AlN powders, the most homogeneous slurry can be achieved. Fourier transform infrared (FTIR) was firstly introduced into the studying of interactions between inorganic AlN particles and organic dispersants. The results show that carbonyl is the main functional group that affects the adsorption property. The carbonyl and nitride atom forms a conjugate structure of n-pi, which makes a stable adsorption.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第2期380-384,共5页
Journal of Inorganic Materials
基金
国家自然科学基金重大项目(69995523)
