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化学学报
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化学学报 ›› 2001, Vol. 59 ›› Issue (5): 648-652. 上一篇    下一篇

研究论文

化学键分散剂在PZN－PZT浆料中的分散和性研究

曾华荣;李国荣;张望重;港币 平;陈大任;殷庆瑞   

  1. 中国科学院无机功能材料开放实验室;中国科学院上海硅酸盐研究所.上海 (200050)
  • 发布日期:2001-05-15

Dipersion of powder in organic medic with chemically bonded dispersant

Zeng Huarong;Li Guorong;Zhang Wangzhong;Gang Bi@ping;Chen Daren;Yin Qingrui   

  1. Shanghai Inst Ceram., CAS.Shanghai(200050)
  • Published:2001-05-15

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利用异丙醇钛与长羧酸合成了一种化学键分散剂，采用沉降实验及FT－IR技术研究了该分散剂在PZN－PZT浆料中的分散性能，结果表明，该分散剂在PZN－PZT浆料是具有良好的分散性，浆料体系达到稳定状态时所需的分散剂量对应分散剂在颗粒表面上呈单分子层成键状态，分散剂分子与颗粒表面上的羟基发生化学反应，导致二者之间呈较强的化学键结合状态，从而有力地改善了PZN－PZT浆料中的分散性、均匀性。

关键词: 化学键, 分散剂, 异丙醇钛, 羧酸, 付里叶变换, 红外分光光度法

A chemically bonded disperant was prepared by reaction of a titanium alkoxide with a long -chin carboxylic acid, and its dispersion tn the PZN－PZT slurry was investigated through sediment test and FT-IR technique. The results show that the dispersant exhibited a good dispersion in PZN－PZT slury. The dispersant concentration required to produce stable dispersions in nonaqueous media corresponded to the monomolecular layer coverage noto the PZN－PZT particle surface. The dispersant adsorbed firmly onto the PZN－PZT particles by a strongly chemical bond formed through reaction of alkoxy groups on the dispersant molecule with surface hydroxyl of the PZN－PZT powder.

Key words: CHEMICAL BONDS, DISPERSANT AGENT, CARBOXYLIC ACID, FOURIER TRANSFORM, INFRARED SPECTROPHOTOMETRY

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