水基流延制备Li_(1.075)Nb_(0.625)Ti_(0.45)O_3微波介质陶瓷基片  

Aqueous Tape Casting of Li_(1.075)Nb_(0.625)Ti_(0.45)O_3 Microwave Ceramic Sheets

作　　者：李绍纯[1] 耿永娟[1] 张启龙[2] 杨辉[2] 

机构地区：[1]青岛理工大学土木工程学院,青岛266033 [2]浙江大学材料科学与工程学系,杭州310027

出　　处：《人工晶体学报》2011年第1期144-149,共6页Journal of Synthetic Crystals

基　　金：山东省高等学校科技计划项目(J09LD14)

摘　　要：以聚乙烯醇水溶液为粘结剂,乙二醇为增塑剂,聚羧酸铵盐为分散剂,通过水基流延工艺制备了Li1.075Nb0.625Ti0.45O3(LNT)微波介质陶瓷基片。对Li1.075Nb0.625Ti0.45O3微波介质陶瓷水基流延浆料流变特性的研究表明,当分散剂用量为0.6 wt%,粘结剂用量为5 wt%,增塑剂用量为10 wt%时,流延浆料分散稳定性良好,呈现典型的剪切变稀型流体特性,满足流延成型工艺的要求。采用该配方制备的Li1.075Nb0.625Ti0.45O3水基流延基片力学性能良好,基片的微观结构均匀。Aqueous tape casting of Li1.075Nb0.625Ti0.45O3 microwave ceramic green sheets was performed using water-soluble polyvinylalcohol（PVA） as binder,ethylene alcohol（EG） as plasticizer,and ammonium salt of polycarboxylate as dispersant.The rheological behaviors of colloidal Li1.075Nb0.625Ti0.45O3 slurries have been investigated.The results indicated that when the dispersant content is 0.6 wt%,binder content is 5 wt% and plasticizer content is 10 wt%,the slurries＇ dispersing stability is well.Moreover,Li1.075Nb0.625Ti0.45O3 aqueous tape casting slurries exhibited the desired shear-thinning behavior.High tensile strength and homogeneous microstructure of Li1.075Nb0.625Ti0.45O3 green sheets were achieved with the optimum slurry.

关 键 词：Li1.075Nb0.625Ti0.45O3 微波介质陶瓷 水基流延成型 流变性 

分 类 号：TQ132.35[化学工程—无机化工]