Improved green strength of ceramic bodies through extrusion using hydroxypropyl methylcellulose as binder

被引：3

作者：

Jiang, Guang-Peng ^{[1
]}

Tao, Dong-Liang ^{[1
]}

机构：

[1] Fuyang Normal Univ, Sch Chem & Mat Engn, Fuyang 236037, Anhui, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2020年 / 17卷 / 03期

关键词：

binder; ceramics; green strength; microstructure; MECHANICAL-PROPERTIES; ALUMINA CERAMICS; SILICON-NITRIDE; GEL;

D O I：

10.1111/ijac.13482

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Different amounts of hydroxypropyl methylcellulose (HPMC) and starch in the form of powder were utilized as binder in the extrusion of silicon nitride green bodies. Their three-point flexural strength and microstructure of fracture surface are investigated. It is found that HPMC can markedly improve the green strength compared with the use of starch. The bending strength with 10% HPMC addition is 29.3 +/- 3.1 MPa, which is approximately 7.5 times that of starch counterpart. The dramatic improvement of strength can be attributed to the rough fiber-like HPMC particles, which were aligned along the direction of extrusion and were pulled out during bending tests. This work represents a step towards a simple but effective way to extrude high-strength ceramic green bodies.

引用

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页码：1249 / 1254

页数：6

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