Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第24卷    第3期    总第180期    2014年3月

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文章编号:1004-0609(2014)03-0773-06
水溶性环氧树脂的锆钛酸铅压电陶瓷凝胶注模成型
赵 阳,谢 睿,张 妍,周科朝,张 斗

(中南大学 粉末冶金国家重点实验室,长沙410083)

摘 要: 分别以聚丙烯酸铵(NH4PAA)和海因环氧树脂为分散剂和凝胶剂,制备锆钛酸铅陶瓷浆料,研究分散剂及固相含量对浆料流变性能、生坯和烧结样品物理性能的影响。结果表明:当分散剂含量(质量分数)为0.6%时,浆料黏度最低;当固相含量(体积分数)高达57.5%时,浆料仍保持良好的流动性;当固相含量为55%时,陶瓷生坯和烧结坯的强度均达到最大值,分别为34.1和77.8 MPa;与传统模压成型工艺对比表明,采用凝胶注模成型工艺制备的样品具有更优异的物理和压电性能。

 

关键字: 凝胶注模成型;锆钛酸铅;水溶性环氧树脂;流变性

Gelcasting of lead zirconate titanate prepared by water-soluble epoxy resin
ZHAO Yang, XIE Rui, ZHANG Yan, ZHOU Ke-chao, ZHANG Dou

State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China

Abstract:The lead zirconate titanate slurry was prepared using polyacrylic acid amine (NH4PAA) and Hydantion epoxy resin as dispersant and gelling agent, respectively. The influences of the dispersant content and the solid loading on the rheological properties and physical properties of the green and sintered bodies were investigated. The results show that the viscosity of the slurry is the lowest when the dispersant content is 0.6% (mass fraction). The slurry maintains good fluidity as the solid loading reaches as high as 57.5% (volume fraction). The highest strengths of green and sintered bodies are 34.1 and 77.8 MPa, respectively, as the solid loading of the slurry is 55%. Compared with the die pressing, the gelcast sample exhibits better physical and piezoelectric properties.

 

Key words: gelcasting; lead zirconate titanate; soluble epoxy resin; rheological property

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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