| 硅酸钠模数对无机聚合物力学性能与微观结构的影响 |
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| 引用本文： | 张祖华,姚晓,诸华军.硅酸钠模数对无机聚合物力学性能与微观结构的影响[J].陶瓷科学与艺术,2011(1). |
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| 作者姓名： | 张祖华 姚晓 诸华军 |
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| 作者单位： | 南京工业大学材料科学与工程学院; |
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| 基金项目： | 江苏省普通高校博士创新基金资助项目(CX098_126Z) |
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| 摘 要： | 用模数m=1.0、1.2、1.4和1.6的4种硅酸钠溶液作激发剂制备偏高岭土基无机聚合物,通过强度测试、红外分析(IR)、X线衍射(XRD)和扫描电镜(SEM)等方法考察激发剂模数对无机聚合物力学性能和微观结构的影响。结果表明:模数在1.0~1.6变化时,激发剂中硅氧四面体呈低聚合态;随养护时间延长,无机聚合物抗压强度和抗折强度提高,m=1.2的无机聚合物28 d抗压强度最高(74.6 MPa),抗折强度为11.2 MPa;4种无机聚合物主体相均呈非晶态,结构上由凝胶体和残留原料颗粒组成,其中,m=1.2时无机聚合物的显微结构最平整。
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| 关 键 词： | 无机聚合物 硅酸钠 模数 力学性能 微观结构 |
Effects of modulus of sodium silicate solution on mechanical properties and microstructure of geopolymer |
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| ZHANG Zuhua,YAO Xiao,ZHU Huajun.Effects of modulus of sodium silicate solution on mechanical properties and microstructure of geopolymer[J].Ceramics Science & Art,2011(1). |
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| Authors: | ZHANG Zuhua YAO Xiao ZHU Huajun |
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| Affiliation: | ZHANG Zuhua,YAO Xiao,ZHU Huajun(College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Four sodium silicate solutions of modulus m=1.0,1.2,1.4 and 1.6 were prepared as activators used in metakaolin-based geopolymer synthesis.The effects of modulus of activator on the mechanical properties and microstructure of the geopolymers were studied by strength test,infrared analysis(IR),X-ray diffraction(XRD),and scanning electron microscopy(SEM).Results showed that the most SiO4 tetrahedrals were in low poly-degree status when the modulus varied from 1.0 to 1.6.Compressive strength and flexural streng... |
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| Keywords: | geopolymer sodium silicate modulus mechanical properties microstructure |
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