水溶性环氧树脂对注凝成型Al2O3泡沫陶瓷结构和性能的影响

doi:10.15541/jim20150137

无机材料学报 ›› 2015, Vol. 30 ›› Issue (10): 1085-1088.DOI: 10.15541/jim20150137

水溶性环氧树脂对注凝成型Al₂O₃泡沫陶瓷结构和性能的影响

张小强, 孙怡, 岛井骏藏, 王士维

(中国科学院上海硅酸盐研究所, 上海200050)

收稿日期:2015-03-20 修回日期:2015-06-10 出版日期:2015-10-20 网络出版日期:2015-09-30
作者简介:张小强(1988–), 男, 硕士研究生. E-mail: 894186912@qq.com
基金资助:
上海市科学技术委员会(14XD1421200)

Effect of Water-soluble Epoxy Resin on Microstructure and Properties of Porous Alumina Ceramics by Gel-casting

ZHANG Xiao-Qiang, SUN Yi, SHIMAI Shun-Zo, WANG Shi-Wei

(Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)

Received:2015-03-20 Revised:2015-06-10 Published:2015-10-20 Online:2015-09-30
About author:ZHANG Xiao-Qiang. E-mail: 894186912@qq.com

摘要/Abstract

摘要：

以异丁烯和马来酸酐共聚物(PIBM)为分散剂和凝胶剂, 同时添加两种表面活性剂, 通过机械发泡和注凝成型工艺制备高气孔率Al₂O₃泡沫陶瓷, 并研究了DE211环氧树脂对Al₂O₃泡沫陶瓷结构和性能的影响。结果表明, 该工艺能够制备气孔率达92.4%的Al₂O₃泡沫陶瓷。随着DE211环氧树脂的加入, 泡沫陶瓷的气孔率略有降低, 抗压强度由0.5 MPa提高到3 MPa, 平均气孔尺寸由582 μm下降到331 μm, 孔壁塌陷少。这归因于DE211环氧树脂的环氧基能够与PIBM的酸酐发生反应, 加快凝胶固化速度, 从而有利于稳定泡沫结构。

关键词: Al2O3泡沫陶瓷, 环氧树脂, 表面活性剂, 注凝成型, 机械发泡

Abstract:

Porous alumina ceramics with high porosity were fabricated by gel-casting and mechanical foaming. Here, PIBM, a co-polymer of isobutylene and maleic anhydride, was used as both dispersant and gelling agent, and two kinds of surfactants were selected as the foaming agent. Then, the effect of DE211 (a water-soluble epoxy resin) on the microstructure and properties of porous alumina ceramics were studied systematically. The results showed that porous alumina ceramics with maximum porosity up to 92.4% was achieved by this method. With addition of DE211 epoxy resin from 0 to 0.5wt%, porosity of porous alumina ceramics slightly decreased and mean pore size decreased from 582 μm to 331 μm, but compressive strength increased from 0.5 MPa to 3 MPa. Besides, there is hardly collapse of cell wall in the porous ceramics. These results are ascribed to the reaction between epoxy group of DE211 and anhydride of PIBM that enhanced the gelling rate and stabilized the foam structure.

Key words: porous alumina ceramics, epoxy resin, surfactant, gel-casting, mechanical foaming

中图分类号:

TQ174

张小强, 孙怡, 岛井骏藏, 王士维. 水溶性环氧树脂对注凝成型Al₂O₃泡沫陶瓷结构和性能的影响[J]. 无机材料学报, 2015, 30(10): 1085-1088.

ZHANG Xiao-Qiang, SUN Yi, SHIMAI Shun-Zo, WANG Shi-Wei. Effect of Water-soluble Epoxy Resin on Microstructure and Properties of Porous Alumina Ceramics by Gel-casting[J]. Journal of Inorganic Materials, 2015, 30(10): 1085-1088.

图/表 4

图1 AMPHITOL 24B添加量对氧化铝泡沫陶瓷气孔率的影响(0.8vol% EMAL TD)

Fig. 1 Effect of the addition of AMPHITOL 24B on the porosity of porous alumina ceramics (0.8vol% EMAL TD)

图2 DE211环氧树脂添加量对氧化铝泡沫陶瓷气孔率和抗压强度的影响(0.8vol%EMAL TD和0.5vol% AMPHITOL 24B)

Fig. 2 Effect of DE211 epoxy resin on the porosity and compressive strength of porous alumina ceramics. (0.8vol%EMAL TD and 0.5vol% AMPHITOL 24B)

图3 DE211环氧树脂添加量对氧化铝泡沫陶瓷微观结构的影响

Fig. 3 Effect of DE211 epoxy resin on microstructure of porous alumina ceramics (0.8vol% EMAL TD and 0.5vol% AMPHITOL 24B) (a) 0; (b) 0.1wt%; (c) 0.3wt%; (d) 0.5wt%

图4 DE211环氧树脂添加量对氧化铝泡沫陶瓷气孔平均尺寸的影响

Fig. 4 Effect of DE211 epoxy resin on the mean pore size of porous alumina ceramics. (0.8vol% EMAL TD and 0.5vol% AMPHITOL 24B)

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水溶性环氧树脂对注凝成型Al₂O₃泡沫陶瓷结构和性能的影响

Effect of Water-soluble Epoxy Resin on Microstructure and Properties of Porous Alumina Ceramics by Gel-casting

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