Effect of Pore Size on Properties of Highly Porous Silica Ceramic Foams for Heat Insulation

doi:10.19691/j.cnki.1004-4493.2020.04.002

China's Refractories ›› 2020, Vol. 29 ›› Issue (4): 6-9.DOI: 10.19691/j.cnki.1004-4493.2020.04.002

• Original article • Previous Articles Next Articles

Effect of Pore Size on Properties of Highly Porous Silica Ceramic Foams for Heat Insulation

DU Zhongpei¹^,², YAO Dongxu¹, XIA Yongfeng¹^,^*(), ZUO Kaihui¹, YIN Jinwei¹, LIANG Hanqin¹, ZENG Yuping¹^,^*()

1 State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Online:2020-12-15 Published:2020-12-15
Contact: XIA Yongfeng,ZENG Yuping
About author:Du Zhongpei is pursuing his PhD in Shanghai Institute of Ceramics, Chinese Academy of Sciences. His project is the manufacturing of highly porous ceramic foams with tailored pore structures, and he has already published 6 papers in Journals.

Abstract

Abstract:

Highly porous silica ceramics with different pore sizes were fabricated by adjusting the mixed surfactants addition. The effect of the pore size on the cold compressive strength and the thermal conductivity of the ceramics was researched. The results show that the smaller pore size can improve the compressive strength and the thermal conductivity. With the mixed surfactants addition increasing from 0.1 mass% to 0.4 mass%, the porosity is close, in the range of 88.10%-88.31%, and the average pore size decreases from 190 μm to 97 μm; the compressive strength is enhanced from 2.97 MPa to 3.55 MPa; and the thermal conductivity decreases from 0.104 W·m^-1·K^-1 to 0.089 W·m^-1·K^-1.

Key words: mixed surfactants, pore size, high porosity, silica foams, direct foaming, thermal conductivity

DU Zhongpei, YAO Dongxu, XIA Yongfeng, ZUO Kaihui, YIN Jinwei, LIANG Hanqin, ZENG Yuping. Effect of Pore Size on Properties of Highly Porous Silica Ceramic Foams for Heat Insulation[J]. China's Refractories, 2020, 29(4): 6-9.

Figures/Tables 5

References 22

[1]	André R. Studart, Urs T Gonzenbach, Elena Tervoort, Ludwig J Gauckler. Processing routes to macroporous ceramics: A review. Journal of the American Ceramic Society, 2006, 89(6): 1771-1789.
[2]	Wan Tao, Yao Dongxu, Yin Jinwei, Xia Yongfeng, Zuo Kaihui, Liang Hanqin, Zeng Yuping. A novel method for preparing Si₃N₄ ceramics with unidirectional oriented pores from silicon aqueous slurries. Journal of the European Ceramic Society, 2017, 37(10): 3285-3291.
[3]	T Ohji, M Fukushima. Macro-porous ceramics: Processing and properties. International Materials Reviews, 2012, 57(2): 115-131.
[4]	Juanli Yu, Jinlong Yang, Sen Li, Hexin Li, Yong Huang. Preparation of Si₃N₄ foam ceramics with nest-like cell structure by particle-stabilized foams. Journal of the American Ceramic Society, 2012, 95(4): 1229-1233.
[5]	Dongxu Yao, Yongfeng Xia, Kaihui Zuo, Dongliang Jiang, Jens Günster, Yu-Ping Zeng, Jürgen G Heinrich. The effect of fabrication parameters on the mechanical properties of sintered reaction bonded porous Si₃N₄ ceramics. Journal of the European Ceramic Society, 2014, 34(15): 3461-3467.
[6]	Wen-Long Huo, Xiao-Yan Zhang, Yu-Gu Chen, Yu-Ju Lu, Wen-Ting Liu, Xiao-Qing Xi, Ya-Li Wang, Jie Xu, Jin-Long Yang. Highly porous zirconia ceramic foams with low thermal conductivity from particle-stabilized foams. Journal of the American Ceramic Society, 2016, 99(11): 3512-3515.
[7]	Zhiqiang Sun, Chen Lu, Junmei Fan, Fangli Yuan. Porous silica ceramics with closed-cell structure prepared by inactive hollow spheres for heat insulation. Journal of Alloys & Compounds, 2016, 662: 157-164.
[8]	M. Dresler, S. Reinsch, R. Schadrack, S. Benemann. Burnout behavior of ceramic coated open cell polyurethane (pu) sponges. Journal of the European Ceramic Society, 2009, 29(16): 3333-3339.
[9]	Xiumin Yao, Yong Yang, Xuejian Liu, Zhengren Huang. Effect of recoating slurry compositions on the microstructure and properties of SiC reticulated porous ceramics. Journal of the European Ceramic Society, 2013, 33(15-16): 2909-2914.
[10]	Ali Alem, Martin D. Pugh, Robin A. L. Drew. Open-cell reaction bonded silicon nitride foams: Fabrication and characterization. Journal of the European Ceramic Society, 2014, 34(3): 599-609.
[11]	Yongfeng Xia, Yu-Ping Zeng, Dongliang Jiang. Mechanical and dielectric properties of porous Si₃N₄ ceramics using pmma as pore former. Ceramics International, 2011, 37(8): 3775-3779.
[12]	Liyuan Zhang, Dali Zhou, Ying Chen, Bin Liang, Jiabei Zhou. Preparation of high open porosity ceramic foams via direct foaming molded and dried at room temperature. Journal of the European Ceramic Society, 2014, 34(10): 2443-2452.
[13]	Rizwan Ahmad, Jang-Hoon Ha, In-Hyuck Song. Particle-stabilized ultra-low density zirconia toughened alumina foams. Journal of the European Ceramic Society, 2013, 33(13-14): 2559-2564.
[14]	Manabu Fukushima, Masayuki Nakata, You Zhou, Tatsuki Ohji, Yu-ichi Yoshizawa. Fabrication and properties of ultra highly porous silicon carbide by the gelation-freezing method. Journal of the European Ceramic Society, 2010, 30(14): 2889-2896.
[15]	Xiaojian Mao, Shiwei Wang, Shunzo Shimai. Porous ceramics with tri-modal pores prepared by foaming and starch consolidation. Ceramics International, 2008, 34(1): 107-112.
[16]	Xiao-Yan Zhang, Tian Lan, Na Li, Jia-Min Wu, Wen-Long Huo, Ning Ma, Jin-Long Yang. Porous silica ceramics with uniform pores from the in-situ foaming process of silica poly-hollow microspheres in inert atmosphere. Materials Letters, 2016, 182: 143-146.
[17]	Takahiro Tomita, Shinji Kawasaki, Kiyoshi Okada. A novel preparation method for foamed silica ceramics by sol-gel reaction and mechanical foaming. Journal of Porous Materials, 2004, 11(2): 107-115.
[18]	Zhongpei Du, Dongxu Yao, Yongfeng Xia, Kaihui Zuo, Jinwei Yin, Hanqin Liang, Yu-Ping Zeng. Highly porous silica foams prepared via direct foaming with mixed surfactants and their sound absorption characteristics. Ceramics International, 2020, 46(9): 12942-12947. DOI URL
[19]	Urs T Gonzenbach, André R Studart, Elena Tervoort, Ludwij J Gauckler. Tailoring the microstructure of particle-stabilized wet foams. Langmuir, 2007, 23(3): 1025-1032.
[20]	Yongfeng Xia, Yu-Ping Zeng, Dongliang Jiang. Microstructure and mechanical properties of porous Si₃N₄ ceramics prepared by freeze-casting. Materials & Design, 2012, 33: 98-103.
[21]	R.M. Spriggs. Expression for effect of porosity on elastic modulus of polycrystalline refractory materials, particularly aluminum oxide. Journal of the American Ceramic Society, 1961, 44(12): 628-629.
[22]	Liuyan Yin, Xingui Zhou, Jinshan Yu, Honglei Wang. Preparation of high porous silicon nitride foams with ultra-thin walls and excellent mechanical performance for heat exchanger application by using a protein foaming method. Ceramics International, 2016, 42(1): 1713-1719.

Samples	S1	S2	S3	S4
Commercial fused silica powder	48.2	48.2	48.2	48.2
α-Si₃N₄ powder	9.9	9.9	9.9	9.9
IBMA	0.5	0.5	0.5	0.5
Mixed surfactants	0.1	0.2	0.3	0.4
Deionized water	41.3	41.2	41.1	41.0

Samples	S1	S2	S3	S4
Commercial fused silica powder	48.2	48.2	48.2	48.2
α-Si₃N₄ powder	9.9	9.9	9.9	9.9
IBMA	0.5	0.5	0.5	0.5
Mixed surfactants	0.1	0.2	0.3	0.4
Deionized water	41.3	41.2	41.1	41.0

Samples	Mixed surfactants addition /mass %	Pore size distribution /μm	Average pore size /μm
S1	0.1	110-275	190
S2	0.2	90-265	181
S3	0.3	55-185	126
S4	0.4	51-175	97

Samples	Mixed surfactants addition /mass %	Pore size distribution /μm	Average pore size /μm
S1	0.1	110-275	190
S2	0.2	90-265	181
S3	0.3	55-185	126
S4	0.4	51-175	97

Samples	Porosity / %	Average pore size /μm	Thermal conductivity / (W · m^-1· K^-1)
S1	88.31	190	0.104
S2	88.25	181	0.096
S3	88.10	126	0.093
S4	88.15	97	0.089

China's Refractories

Effect of Pore Size on Properties of Highly Porous Silica Ceramic Foams for Heat Insulation

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 5

References 22

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	HE Jian, LYU Xusheng, ZHANG Jialiang, ZHOU Wei, LI Yin. Application Performance of Microporous Sintered Alumina in Alumina Magnesia Castables for Ladles [J]. China's Refractories, 2020, 29(2): 6-10.
[2]	ZHANG Yajing, LI Yile, TAN Lihua. Determination of Thermal Physical Properties [J]. , 2018, 27(2): 13-17.
[3]	HE Miaolin*, ZHANG Meijie, HUANG Ao. Research for Optimizing Porosity of Porous Thermal-insulating Materials [J]. , 2018, 27(2): 41-44.
[4]	CHEN Ruoyu, LI Yuanbing, XIANG Ruofei, LI Shujing, FAN Xiafei, LI Yawei, SANG Shaobai. Effect of Pyrophyllite Addition on Properties of Lightweight Insulation Refractory Materials [J]. , 2017, 26(3): 38-42.
[5]	WANG Tongsheng, LI Yawei, SANG Shaobai. Nickel-catalyzed Construction of Heat Conductive Network in Electrically Calcined Anthracite (ECA) Based Carbon Blocks [J]. , 2017, 26(1): 31-37.
[6]	YUAN Lin*,WANG Juntao,TONG Lijin, ZHAO Hongliang, LI Quanyou, CHEN Songlin. Composite Design of Low Thermal Conductivity Mullite Brick for Application to Cement Kiln [J]. , 2016, 25(4): 0-0.
[7]	E. LITOVSKY,V. ISSOUPOV,J. KLEIMAN. Optimization of Compressed Ceramics Fiber Insulating Layers [J]. , 2016, 25(1): 13-19.
[8]	WANG Gang*,YUAN Bo,WU Haibo, DONG Binbin, HAN Jianshen, CHEN Kuo, LI Hongxia. Preparation and Properties of Alumina Heat Insulation Materials with High Purity [J]. , 2015, 24(4): 18-22.
[9]	FU Lyuping*,HUANG Ao,GU Huazhi, ZHANG Meijie, LI Zhengkun, ZHAO Yi. Preparation, Performance and Slag Resistant Mechanism of Low Thermal Conductivity Microporous Corundum [J]. , 2015, 24(4): 23-30.
[10]	SUN Xiaofei*,WANG Haimei,YUAN Bo, WANG Gang. High Alumina Fiber Composite SiO2 Based Nanoporous Insulation Boards [J]. , 2015, 24(4): 35-38.
[11]	LIN Sen*,YAO Dongxu,XIA Yongfeng, ZUO Kaihui, YIN Jinwei, ZENG Yuping. Influence of Yb2O3-MgO on Mechanical Properties and Thermal Conductivity of Silicon Nitride Ceramics via Gas Pressure Sintering [J]. , 2015, 24(3): 34-39.
[12]	GU Huangzhi, HUANG Ao, ZHANG Meijie, LI Zhengkun, MA Lieying, DU Bo, Zou Yang. Preparation of Microporous Corundum and Its Effect on Properties of Al2O3-MgO Castables [J]. , 2014, 23(4): 22-26.
[13]	YU Jingkun, HAN Lu. Preparation of Nanoporous Thermal Insulating Materials and Their Application as Ladle Linings [J]. , 2014, 23(4): 13-15.
[14]	FENG Zhiyuan, SHI Gan, ZHANG Wei, et al.. Preparation of Light-weight Spinel Refractory by Foaming−gel Process [J]. , 2013, 22(4): 28-32.
[15]	FANG Binxiang, ZHU Boquan, LI Xiangcheng. Pore Size Distribution and Its Quantitative Relationship with Strength of Corundum Based Castables [J]. China's Refractories, 2010, 19(4): -.