氧化铝悬浮液流变性能及空间位阻影响机制

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (3): 1074-1080.

所属专题：陶瓷

氧化铝悬浮液流变性能及空间位阻影响机制

鲍志蕾^1,2, 李钢², 雷鑫², 江超¹, 于欢¹, 李凯钦³

1.景德镇陶瓷大学材料科学与工程学院,景德镇 333403;
2.江西陶瓷工艺美术职业技术学院材料学院,景德镇 333400;
3.景德镇景华特种陶瓷有限公司,景德镇 333400

收稿日期:2022-11-14 修订日期:2022-12-20 出版日期:2023-03-15 发布日期:2023-03-31
作者简介:鲍志蕾(1990—),男,博士研究生。主要从事陶瓷材料的研究。E-mail:853533569@qq.com
基金资助:
江西省教育厅科技项目(GJJ2205605,2205603,2205612);景德镇市科技项目(20224GY011-02)

Rheological Properties of Alumina Suspension and Mechanism of Steric Hindrance

BAO Zhilei^1,2, LI Gang², LEI Xin², JIANG Chao¹, YU Huan¹, LI Kaiqin³

1. School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China;
2. School of Materials, Jiangxi Arts & Ceramics Technology Institute, Jingdezhen 333400, China;
3. Jingdezhen Jinghua Special Ceramics Co., Ltd., Jingdezhen 333400, China

Received:2022-11-14 Revised:2022-12-20 Online:2023-03-15 Published:2023-03-31

摘要/Abstract

摘要： 聚合物空间稳定机制是陶瓷悬浮液稳定的主要方式。本文以聚合物空间稳定的氧化铝悬浮液为研究对象,通过流变性能测试,研究了悬浮液体积分数、聚合物含量、颗粒粒径对悬浮液弹性模量的影响规律。结果表明,稳态剪切和振荡剪切两种流变测试模式都证明了悬浮液存在明显的弹性特征。确定了对于聚合物稳定的氧化铝悬浮液,影响弹性模量的核心要素为颗粒表面间距,因为颗粒表面间距影响了吸附聚合物的压缩程度。增大悬浮液体积分数、减小颗粒粒径均是通过降低颗粒表面间距以及被压缩吸附层的厚度使系统弹性模量上升,表现为弹性变大,最终影响悬浮液的稳定性。

关键词: 陶瓷, 氧化铝, 悬浮液, 流变性能, 弹性模量, 空间稳定

Abstract: Polymer steric stabilization is the main mechanism of ceramic suspension stabilization. In this paper, the alumina suspension stabilized by steric mechanism was studied. The influence laws of volume fraction of suspension, content of polymer and particle size on the elastic modulus were studied through rheological property tests. The results indicate that the two rheological testing modes of steady-state shear and oscillatory shear prove that the suspension has obvious elastic characteristics. It is determined that the core factor affecting the elastic modulus of alumina suspension in steric stabilization is the particle surface spacing, due to the particle surface spacing affecting the compression degree of adsorbed polymer. Increasing the volume fraction of suspension and decreasing the particle size both improve the elastic modulus of the system by reducing the particle surface spacing and the thickness of compressed adsorption layer, meanwhile elasticity increases, and the stability of suspension is affected.

Key words: ceramics, alumina, suspension, rheological property, elastic modulus, steric stabilization

中图分类号:

TQ174

鲍志蕾, 李钢, 雷鑫, 江超, 于欢, 李凯钦. 氧化铝悬浮液流变性能及空间位阻影响机制[J]. 硅酸盐通报, 2023, 42(3): 1074-1080.

BAO Zhilei, LI Gang, LEI Xin, JIANG Chao, YU Huan, LI Kaiqin. Rheological Properties of Alumina Suspension and Mechanism of Steric Hindrance[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(3): 1074-1080.

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氧化铝悬浮液流变性能及空间位阻影响机制

Rheological Properties of Alumina Suspension and Mechanism of Steric Hindrance

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