分散剂对低温共烧陶瓷流延浆料流变性能的影响

摘要/Abstract

摘要： 本文探究了蓖麻油、BYK-22552、聚乙烯吡咯烷酮(PVP)、TEGO-700四种分散剂对CaO-B₂O₃-La₂O₃玻璃/氧化铝低温共烧陶瓷(LTCC)流延浆料分散性的影响,并进一步对该体系浆料流变性能、触变性能、固相体积分数以及沉降性能方面进行了研究,通过红外光谱分析研究了四种分散剂的分散机理并给出了解释。结果表明,当分散剂TEGO-700用量为粉体质量的2%时,流延浆料具有最小黏度(1 650 mPa·s)与最佳触变恢复性。在流延成型最佳黏度2 000 mPa·s下,浆料具有最大固相体积分数(37.2%)与优异的沉降性能。该浆料流延成型得到的柔性生瓷带表面平整且厚度均一,表面粗糙度为144 nm。烧结得到的基板材料表面无气孔、裂纹等明显缺陷,烧结致密化程度高,表面粗糙度为210 nm,40 GHz下测得介电常数与介电损耗分别为6.257和1.431×10^-3。

关键词: 氧化铝, CaO-B₂O₃-La₂O₃玻璃, 低温共烧陶瓷, 流延浆料, 分散剂, 流变性能

Abstract: In this paper, the effects of castor oil, BYK-22552, polyvinylpyrrolidone (PVP) and TEGO-700 on the dispersion of CaO-B₂O₃-La₂O₃ glass/alumina casting slurry of low temperature co-fired ceramic (LTCC) were investigated. The rheological properties, thixotropy, solid content and sedimentation properties of the casting slurry were further studied. The dispersion mechanism of four dispersants was researched and explained by infrared spectroscopy. The results show that when the amount of dispersant TEGO-700 is 2% of the powder mass, the casting slurry has the minimum viscosity (1 650 mPa·s) and the best thixotropic recovery. Under the optimum viscosity of 2 000 mPa·s for tape casting, the slurry has the maximum solid content (37.2%) and excellent sedimentation performance. The surface of the green tapes is flat and uniform in thickness, and the surface roughness is 144 nm. The surface of the sintered substrate has no obvious defects such as pores and cracks. The sintering densification is improved and the surface roughness is 210 nm. The dielectric constant and dielectric loss of sintered substrate measured at 40 GHz are 6.257 and 1.431×10^-3, respectively.

Key words: alumina, CaO-B₂O₃-La₂O₃ glass, low temperature co-fired ceramic, casting slurry, dispersant, rheological property

中图分类号:

TQ171

吕子彬, 郭恩霞, 海韵, 曹禹, 吕金玉, 徐博, 韩滨, 祖成奎. 分散剂对低温共烧陶瓷流延浆料流变性能的影响[J]. 硅酸盐通报, 2022, 41(11): 3979-3989.

LYU Zibin, GUO Enxia, HAI Yun, CAO Yu, LYU Jinyu, XU Bo, HAN Bin, ZU Chengkui. Effects of Dispersants on Rheological Properties of LTCC Casting Slurry[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(11): 3979-3989.

参考文献

[1] THOMAS D, ABHILASH P, SEBASTIAN M T. Casting and characterization of LiMgPO₄ glass free LTCC tape for microwave applications[J]. Journal of the European Ceramic Society, 2013, 33(1): 87-93.
[2] 曹禹,海韵,朱宝京,等.低温共烧陶瓷用玻璃材料研究进展[J].硅酸盐学报,2022,50(4):1182-1192.
CAO Y, HAI Y, ZHU B J, et al. Research progress on glass materials for low-temperature co-fired ceramics[J]. Journal of the Chinese Ceramic Society, 2022, 50(4): 1182-1192 (in Chinese).
[3] 金逐中.分散剂的稳定机理及筛选方法[J].现代涂料与涂装,2016,19(4):30-32.
JIN Z Z. The stability principle and screening technique of dispersing agent[J]. Modern Paint ＆ Finishing, 2016, 19(4): 30-32 (in Chinese).
[4] 胡善海,钱玉鹏,江学峰,等.蛭石基流延浆料的流变性能研究[J].硅酸盐通报,2021,40(1):312-316.
HU S H, QIAN Y P, JIANG X F, et al. Research on rheological properties of vermiculite based casting slurry[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(1): 312-316 (in Chinese).
[5] ARUN S, SEBASTIAN M T, SURENDRAN K P. Li₂ZnTi₃O₈ based high κ LTCC tapes for improved thermal management in hybrid circuit applications[J]. Ceramics International, 2017, 43(7): 5509-5516.
[6] ZHANG Q X, LUO X J, LI W L, et al. Tape casting of AlN/glass composites for LTCC substrate[J]. Journal of Materials Science, 2003, 38(8): 1781-1785.
[7] RICHARD E M,ERIC R T.流延成型的理论与实践[M].北京:清华大学出版社,2015.
RICHARD E M, ERIC R T. Theory and practice of flow forming[M]. Beijing: Tsinghua University Press, 2015 (in Chinese).
[8] LIU Z F, WANG Y L, LI Y X. Combinatorial study of ceramic tape-casting slurries[J]. ACS Combinatorial Science, 2012, 14(3): 205-210.
[9] 石颖恒,王超,员文杰.氧化铝微粉的特性和分散剂对浆料流变特性的影响[J].耐火材料,2021,55(1):21-25+29.
SHI Y H, WANG C, YUN W J. Effects of alumina micro-powder characteristics and dispersants on rheological properties of alumina slurries[J]. Refractories, 2021, 55(1): 21-25+29 (in Chinese).
[10] XU X H, ZHOU S X, WU J F, et al. Inter-particle interactions of alumina powders in UV-curable suspensions for DLP stereolithography and its effect on rheology, solid loading, and self-leveling behavior[J]. Journal of the European Ceramic Society, 2021, 41(4): 2763-2774.
[11] 林小清,王浩键,梁若繁,等.陶瓷添加剂ISOBAM对氧化铝浆料流变性能的影响[J].硅酸盐通报,2021,40(4):1338-1343.
LIN X Q, WANG H J, LIANG R F, et al. Effect of ISOBAM on rheological behavior of alumina slurries[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(4): 1338-1343 (in Chinese).
[12] 南博,张海波,贺跃辉.适用于直写式3D打印陶瓷浆料的流变学性能研究[J].精密成形工程,2021,13(2):1-6.
NAN B, ZHANG H B, HE Y H. Investigation on the rheological behaviour of ceramic pastes suitable for direct ink writing[J]. Journal of Netshape Forming Engineering, 2021, 13(2): 1-6 (in Chinese).
[13] NAN B, GALINDO-ROSALES F J, FERREIRA J M F. 3D printing vertically: direct ink writing free-standing pillar arrays[J]. Materials Today, 2020, 35: 16-24.
[14] 王传创,刘银,朱岩岩,等.氧化锆陶瓷注凝成型浆料流变性研究[J].硅酸盐通报,2016,35(4):1235-1239+1253.
WANG C C, LIU Y, ZHU Y Y, et al. Rheology behavior of suspension of zirconia ceramic by gel-casting[J]. Bulletin of the Chinese Ceramic Society, 2016, 35(4): 1235-1239+1253 (in Chinese).
[15] ZHANG W X, FENG Y, NIU Y F, et al. Surface modification of superfine SiC powders by ternary modifiers-KH560/sodium humate/SDS and its mechanism[J]. Ceramics International, 2021, 47(17): 23834-23843.
[16] REN L C, LUO X F, ZHOU H Q. The tape casting process for manufacturing low-temperature co-fired ceramic green sheets: a review[J]. Journal of the American Ceramic Society, 2018, 101(9): 3874-3889.
[17] SATO T,PUCH R J.聚合物吸附对胶态分散体稳定性的影响[M].江龙,译.北京:科学出版社,1988.
SATO T, RUCH R J. Effect of polymer adsorption on the stability of colloidal dispersion[M]. JIANG L, trans. Beijing: Science Press, 1988 (in Chinese).
[18] 王正东,胡黎明.超分散剂的作用机理及应用效果[J].精细石油化工,1996,13(6):59-62.
WANG Z D, HU L M. Mechanism of hyperdispersants and its application effect[J]. Speciality Petrochemicals, 1996, 13(6): 59-62 (in Chinese).
[19] 徐坦,刘文燕,刘璐,等.PAA-NH₄和PVP对氧化锆悬浮液流变性能的影响[J].陶瓷学报,2016,37(6):621-625.
XU T, LIU W Y, LIU L, et al. Effect of PAA-NH₄ and PVP on the rheology of ZrO₂ suspensions[J]. Journal of Ceramics, 2016, 37(6): 621-625 (in Chinese).
[20] 许启明,张磊,姚燕燕,等.聚乙烯吡咯烷酮及钛酸酯对ITO浆料的分散稳定性考察[J].精细化工,2011,28(1):29-33+38.
XU Q M, ZHANG L, YAO Y Y, et al. Effects of PVP and titanate dispersants on stability of ITO suspension[J]. Fine Chemicals, 2011, 28(1): 29-33+38 (in Chinese).
[21] FOLMER B M, HOLMBERG K, KLINGSKOG E G, et al. Fatty amide ethoxylates: synthesis and self-assembly[J]. Journal of Surfactants and Detergents, 2001, 4(2): 175-183.