| Related citation: | Peigang He,Zhanlin Jia,Shuai Fu,Jiatao Wang,Xiaoming Duan,Zhihua Yang,Dechang Jia,Yu Zhou.Effects of Fiber Surface Pretreatment and Composite Post-treatment on Mechanical Properties of 2D-Cf/PhosphateGeopolymer Matrix Composites[J].Journal of Harbin Institute Of Technology(New Series),2020,27(3):233-242.DOI:10.11916/j.issn.1005-9113.20041. |
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| Effects of Fiber Surface Pretreatment and Composite Post-treatment on Mechanical Properties of 2D-Cf/PhosphateGeopolymer Matrix Composites |
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| Author Name | Affiliation | | Peigang He | Institute for Advanced Ceramics, Department of Materials Science, Harbin Institute of Technology, Harbin 150001, China
Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China | | Zhanlin Jia | Institute for Advanced Ceramics, Department of Materials Science, Harbin Institute of Technology, Harbin 150001, China
Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China | | Shuai Fu | Institute for Advanced Ceramics, Department of Materials Science, Harbin Institute of Technology, Harbin 150001, China
Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China | | Jiatao Wang | Institute for Advanced Ceramics, Department of Materials Science, Harbin Institute of Technology, Harbin 150001, China
Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China | | Xiaoming Duan | Institute for Advanced Ceramics, Department of Materials Science, Harbin Institute of Technology, Harbin 150001, China
Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China | | Zhihua Yang | Institute for Advanced Ceramics, Department of Materials Science, Harbin Institute of Technology, Harbin 150001, China
Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China | | Dechang Jia | Institute for Advanced Ceramics, Department of Materials Science, Harbin Institute of Technology, Harbin 150001, China
Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China | | Yu Zhou | Institute for Advanced Ceramics, Department of Materials Science, Harbin Institute of Technology, Harbin 150001, China
Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: |
| Geopolymers are an important class of materials with potential applications because of their heat resistance, flame resistance, environmental friendliness, and possibilities of being transformed into ceramic matrix composites at low cost. However, the low mechanical properties as well as the intrinsic brittleness limit their technological implementations, and it is necessary to enhance the mechanical properties of geopolymers by adopting various kinds of reinforcements. In this work, therefore, two-dimensional continuous carbon fiber (Cf) reinforced phosphate-based geopolymer composites (Cf/geopolymer) were prepared through ultrasonic-assisted impregnation method. Effects of acetone treatment and high-temperature treatment on the properties of Cf/geopolymer composites were studied by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Results of the study proved that acetone treatment plays a key role in ameliorating the interfacial interaction between Cf and phosphate matrix, which can thus enhance the mechanical properties of Cf/geopolymer composites. The Cf/geopolymer composites prepared by acetone-treated Cf had a flexural strength of 156.1 MPa and an elastic modulus of 39.7 GPa in Y direction. Moreover, an additional Sol-SiO2 re-impregnation treatment could further enhance the mechanical properties of the acetone-treated Cf/geopolymer composites by repairing the cracks and filling the pores. The results in this paper not only provide insights into the surface modification of Cf, but also report a facile and low-cost preparation route for Cf/geopolymer composites with potential applications in aerospace and defense technology. |
| Key words: geopolymer carbon fiber composite surface modification mechanical properties |
| DOI：10.11916/j.issn.1005-9113.20041 |
| Clc Number:TB332 |
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| Descriptions in Chinese: |
| 纤维表面改性和后处理对2D-碳纤维强韧磷酸盐无机聚合物复合材料力学性能的影响 何培刚1,2，贾占林1,2，付帅1,2，王加涛1,2，段小明1,2，杨治华1,2，贾德昌1,2，周玉1,2 （1哈尔滨工业大学 材料科学系，特种陶瓷研究所，哈尔滨 150001； 2 先进结构功能一体化材料与绿色制造技术工信部重点实验室，哈尔滨工业大学，哈尔滨 150001） 中文说明:无机聚合物因其具有良好的耐热性、阻燃性、环境友好等特性受到广泛关注。然而其主要缺点为强度低、脆性大、应用可靠性差，因此需要对其进行强韧化处理。本文采用超声辅助浸渍法制备了二维连续碳纤维（Cf）增强的磷酸盐基无机聚合物复合材料，通过X射线光电子能谱（XPS），X射线衍射（XRD）和扫描电子显微镜（SEM）研究了纤维表面处理和复合材料高温处理对复合材料性能的影响。结果表明，表面处理可显著改善碳纤维和基体之间的界面相互作用，这在提高复合材料力学性能方面起着关键作用，所制备复合材料的弯曲强度和杨氏模量分别为156.1 MPa和 39.7 GPa，同时其断裂过程完全不同于无机聚合物基体，表现为伪塑性断裂特征，从而使其应用可靠性显著提高。此外，采用后续Sol-SiO2再浸渍处理可提高复合材料致密度从而进一步改善复合材料的力学性能。本文的研究结果提供了一种改善复合材料界面性能的新思路，所制备复合材料表现出较高的力学性能和非灾难性断裂特征，同时具有低温制备、高温服役的突出特性，在高马赫数飞行器多功能防热承载构件上具有潜在的应用前景。 关键词：无机聚合物，碳纤维，复合材料，表面改性，力学性能 |
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