抛光渣体系发泡陶瓷的发泡性能研究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (8): 2726-2733.

抛光渣体系发泡陶瓷的发泡性能研究

戴永刚¹, 陆成龙^1,2,3, 张银凤², 张国涛¹

1.广东金意陶陶瓷集团有限公司,佛山 528031;
2.湖北理工学院,矿区环境污染控制与修复湖北省重点实验室,黄石 435003;
3.华南理工大学材料科学与工程学院,广州 510640

收稿日期:2021-04-02 修回日期:2021-06-26 出版日期:2021-08-15 发布日期:2021-09-02
通讯作者: 陆成龙,博士,副教授。E-mail:cjwust@126.com
作者简介:戴永刚(1976—),男,工程师。主要从事建筑陶瓷研究。E-mail:dyg@kito.cn
基金资助:
2020年度佛山市社会领域科技攻关项目(2020001005875);湖北省重点实验开放基金(2019101)

Foaming Properties of Ceramics Foamed by Polishing Slag System

DAI Yonggang¹, LU Chenglong^1,2,3, ZHANG Yinfeng², ZHANG Guotao¹

1. Guangdong KITO Ceramics Group Co., Ltd., Foshan 528031, China;
2. Hubei Key Laboratory of Mine Environmental Pollution Control & Remediation, Hubei Polytechnic University, Huangshi 435003, China;
3. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China

Received:2021-04-02 Revised:2021-06-26 Online:2021-08-15 Published:2021-09-02

摘要/Abstract

摘要： 以工业上成熟的抛光渣体系配方制备发泡陶瓷,探讨了烧结温度对其发泡性能的影响。同时,与外加发泡剂的抛光渣体系发泡陶瓷试样的显微结构、线收缩和体积膨胀率进行了对比分析,探讨了孔结构对发泡陶瓷试样强度和热稳定性的影响。研究发现,抛光渣具备一定的发泡能力,自身可发泡形成尺寸为10~200 μm(1 160~1 220 ℃)的球形气孔结构,孔壁的结构较致密。其对烧结温度十分敏感,在1 180~1 200 ℃范围内,发泡陶瓷试样的体积膨胀了2倍。外加SiC发泡剂能显著提高抛光渣体系发泡陶瓷试样的发泡能力,使其气孔尺寸增加10倍左右,但气孔形状不规则,孔壁结构中存在微小气孔。研究结果表明,外加发泡剂后,抛光渣自身发泡形成的壁孔结构使发泡陶瓷气孔率增加,强度损失较少,导热系数降低,且壁孔结构中的气孔分布不均匀,使发泡陶瓷的热稳定性降低。

关键词: 发泡陶瓷, 抛光渣, 发泡性能, 烧结温度, 气孔分布, 使用性能

Abstract: Foamed ceramics were prepared by commercially formula of polishing slag system, and the effects of sintering temperature on foaming properties of samples were studied. By contrastive analysis, the microstructure, linear shrinkage rate and volume expansion rate of samples with foaming agents were reseached, and the effects of pore structure on the strength and thermal stability were studied. It was found that, polishing slags can foam by itself, forming spherical pores with size of 10 μm to 200 μm (1 160 ℃ to 1 220 ℃). And the walls of pores were dense. It is very sensitive to sintering temperature, in the range of 1 180 ℃ to 1 200 ℃, the volume of the foamed ceramics sample expanded twice. The foaming property of samples with SiC was significantly improved, the pores were irregular, and the pore size of samples increased by 10 times. After adding foaming agent, There were small pores in the pore wall, which made the strength and the thermal conductivity loss less, while the porosity increased. However, the distribution of pores in the wall was uneven, decreasing the thermal stability of the foamed ceramics.

Key words: foamed ceramics, polishing slag, foaming property, sintering temperature, pore distribution, application performance

中图分类号:

TB321
TQ174

戴永刚, 陆成龙, 张银凤, 张国涛. 抛光渣体系发泡陶瓷的发泡性能研究[J]. 硅酸盐通报, 2021, 40(8): 2726-2733.

DAI Yonggang, LU Chenglong, ZHANG Yinfeng, ZHANG Guotao. Foaming Properties of Ceramics Foamed by Polishing Slag System[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(8): 2726-2733.

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