| 硅树脂转化制备硅氧碳多孔陶瓷 |
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| 引用本文： | 张海昇,张军战,张颖,贺辉,王宁. 硅树脂转化制备硅氧碳多孔陶瓷[J]. 人工晶体学报, 2017, 46(7): 1294-1299 |
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| 作者姓名： | 张海昇 张军战 张颖 贺辉 王宁 |
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| 作者单位： | 西安建筑科技大学材料与矿资学院,西安,710055 |
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| 基金项目： | 西安建筑科技大学人才科技基金(RC1705) |
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| 摘 要： | 采用硅树脂RSN-6018为陶瓷先驱体,并引入一定比例的预固化硅树脂,在N2气氛下于1200 ℃裂解转化制备组分单一、孔结构可控以及陶瓷产率高的硅氧碳(Si-O-C)多孔陶瓷,研究了预固化硅树脂含量对Si-O-C多孔陶瓷微观形貌和性能的影响.结果表明:预固化硅树脂的加入可有效调节Si-O-C多孔陶瓷的孔形貌、孔径以及气孔率,当预固化硅树脂含量低于90wt;时,随着预固化硅树脂含量的增加,孔结构从贯通圆孔变为颗粒"搭接"贯通孔,再变为颗粒堆积孔,且气孔率增大;而体积收缩减小,陶瓷产率提高;耐压强度在27.9~17.5 MPa之间.
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| 关 键 词： | 硅树脂 预固化 硅氧碳 多孔陶瓷, |
Preparation of Silicon Oxycarbide Porous Ceramics by Silicone Resin |
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| ZHANG Hai-sheng,ZHANG Jun-zhan,ZHANG Ying,HE Hui,WANG Ning. Preparation of Silicon Oxycarbide Porous Ceramics by Silicone Resin[J]. Journal of Synthetic Crystals, 2017, 46(7): 1294-1299 |
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| Authors: | ZHANG Hai-sheng ZHANG Jun-zhan ZHANG Ying HE Hui WANG Ning |
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| Abstract: | Silicon oxycarbide(Si-O-C) porous ceramics with single component, controllable pore structure and high ceramic yield were prepared at 1200 ℃ in N2 atmosphere by using RSN-6018 silicone resin as preceramic polymer and introducing certain content pre-cured silicone resin.The effects of the contents of pre-cured silicone resin on the microstructure and properties of Si-O-C porous ceramics were studied.Results show that pre-cured silicone resin can adjust the pore morphology, pore diameter and porosity of Si-O-C porous ceramics.When the content of pre-cured silicone resin is lower than 90wt%, the pore structure of Si-O-C porous ceramics changes from the through-hole to the through-pore formed by the overlapping of particles and then to the open pore formed by the accumulation of particles with the increasing of the content of pre-cured silicone resin.At the meanwhile, the porosity increases.However, the shrinkage decreases, whereas ceramic yield increases.The compressive strength of Si-O-C porous ceramics is 27.9-17.5 MPa. |
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| Keywords: | silicone resin pre-cured silicon oxycarbide porous ceramics |
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