摘要
以改性膨胀蛭石和滑石填料为原料,蓖麻油为分散剂,聚乙烯醇缩丁醛(PVB)为粘结剂,邻苯二甲酸二丁酯(DBP)为增塑剂,采用球磨法制备蛭石基流延浆料。考察浆料固含量和各组分添加量对浆料流变性能的影响,得出了合适的浆料配方为:固含量质量分数为50%、蓖麻油用量为粉体质量的2%、PVB用量为粉体质量的6%、DBP用量为R=0.8时,流延浆料具有典型剪切变稀行为的塑性流体特性,该配方制备的蛭石基流延坯料表面均匀,无裂纹。
Vermiculite based casting slurry was prepared using ball milling with modified expanded vermiculite and talc as raw materials,castor oil as dispersant,polyvinyl butyral(PVB)as binder and dibutyl phthalate(DBP)as plasticizer.The effects of solid dosages and amount of each component on the rheological properties of slurry were investigated.The suitable mass fraction components of tape casting slurry are obtained as follows:the solid dosage mass fraction of vermiculite powder is 50%,the castor oil dosage is 2%,the PVB dosage is 6%,and the DBP dosage is R=0.8.The casting slurry has plastic fluid characteristics with typical shear thinning behavior.The vermiculite based casting blank prepared by this formula has a uniform surface without cracks.
作者
胡善海
钱玉鹏
江学峰
王飞
丁锋
赵绍林
HU Shanhai;QIAN Yupeng;JIANG Xuefeng;WANG Fei;DING Feng;ZHAOShaolin(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Key Laboratory of Mineral Resources Processing and Environment,Wuhan 430070,China;Zhejiang Cathay Packing and Sealing Co.,Ltd.,Hangzhou 311255,China;Central-Southern Safety and Environment Technology Institute Co.,Ltd.,Wuhan 430070,China)
出处
《硅酸盐通报》
CAS
北大核心
2021年第1期312-316,共5页
Bulletin of the Chinese Ceramic Society
基金
中央高校基本科研业务费专项(2019III089CG)。
关键词
膨胀蛭石
浆料
流延成型
流变性能
密封材料
expanded vermiculite
slurry
tape casting
rheological property
sealing material
