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Preparation method of high-dispersion carbon fiber reinforced SiBC (N/O) self-healing composite material
The invention belongs to the technical field of preparation of self-healing composite materials, and relates to a preparation method of a high-dispersion carbon fiber reinforced SiBC (N/O) self-healing composite material, which comprises the following steps: soaking carbon fiber in a boron-containing ceramic precursor, taking out, heating, curing and cracking to obtain carbon fiber with a SiBC (N/O) ceramic surface modification layer; the preparation method comprises the following steps: ball-milling and uniformly mixing carbon fibers with a SiBC (N/O) ceramic surface modification layer, a boron-containing ceramic precursor and a dispersing agent, curing and molding, and cracking a molded green body to obtain a carbon fiber reinforced SiBC (N/O) ceramic preform; immersing a boron-containing ceramic precursor in the product of the previous step, dipping under a vacuum condition, taking out, curing and molding, and cracking; and repeating the steps until the weight gain rate of the composite material is less than or equal to 1%. The SiBC (N/O) ceramic surface modification layer is modified on the surface of the chopped carbon fiber, so that the highly uniform dispersion of the chopped fiber in the composite material is realized, and the mechanical property and the self-healing property of the composite material are improved.
本发明属于自愈合复合材料制备技术领域，涉及一种高分散碳纤维增强SiBC(N/O)自愈合复合材料的制备方法，包括以下步骤：将碳纤维浸泡在含硼陶瓷先驱体中，取出升温固化裂解，获得具有SiBC(N/O)陶瓷表面修饰层的碳纤维；将具有SiBC(N/O)陶瓷表面修饰层的碳纤维、含硼陶瓷先驱体、分散剂球磨混合均匀，固化成型，将成型后的坯体进行裂解获得碳纤维增强SiBC(N/O)陶瓷预制件；将含硼陶瓷先驱体浸没上一步骤的产物，在真空条件下进行浸渍，取出，固化成型后裂解；重复上述步骤直至复合材料的增重率≤1％。本发明通过在短切碳纤维表面修饰SiBC(N/O)陶瓷表面修饰层，有利于实现短切纤维在复合材料的高度均匀分散，提高复合材料的力学性能和自愈合性能。
Preparation method of high-dispersion carbon fiber reinforced SiBC (N/O) self-healing composite material
The invention belongs to the technical field of preparation of self-healing composite materials, and relates to a preparation method of a high-dispersion carbon fiber reinforced SiBC (N/O) self-healing composite material, which comprises the following steps: soaking carbon fiber in a boron-containing ceramic precursor, taking out, heating, curing and cracking to obtain carbon fiber with a SiBC (N/O) ceramic surface modification layer; the preparation method comprises the following steps: ball-milling and uniformly mixing carbon fibers with a SiBC (N/O) ceramic surface modification layer, a boron-containing ceramic precursor and a dispersing agent, curing and molding, and cracking a molded green body to obtain a carbon fiber reinforced SiBC (N/O) ceramic preform; immersing a boron-containing ceramic precursor in the product of the previous step, dipping under a vacuum condition, taking out, curing and molding, and cracking; and repeating the steps until the weight gain rate of the composite material is less than or equal to 1%. The SiBC (N/O) ceramic surface modification layer is modified on the surface of the chopped carbon fiber, so that the highly uniform dispersion of the chopped fiber in the composite material is realized, and the mechanical property and the self-healing property of the composite material are improved.
本发明属于自愈合复合材料制备技术领域，涉及一种高分散碳纤维增强SiBC(N/O)自愈合复合材料的制备方法，包括以下步骤：将碳纤维浸泡在含硼陶瓷先驱体中，取出升温固化裂解，获得具有SiBC(N/O)陶瓷表面修饰层的碳纤维；将具有SiBC(N/O)陶瓷表面修饰层的碳纤维、含硼陶瓷先驱体、分散剂球磨混合均匀，固化成型，将成型后的坯体进行裂解获得碳纤维增强SiBC(N/O)陶瓷预制件；将含硼陶瓷先驱体浸没上一步骤的产物，在真空条件下进行浸渍，取出，固化成型后裂解；重复上述步骤直至复合材料的增重率≤1％。本发明通过在短切碳纤维表面修饰SiBC(N/O)陶瓷表面修饰层，有利于实现短切纤维在复合材料的高度均匀分散，提高复合材料的力学性能和自愈合性能。
Preparation method of high-dispersion carbon fiber reinforced SiBC (N/O) self-healing composite material
一种高分散碳纤维增强SiBC(N/O)自愈合复合材料的制备方法
WU XISHI (author) / HUANG ZHENGREN (author) / WU HAIBO (author) / LIU ZEHUA (author) / PEI BINGBING (author) / LIU HUAN (author) / YANG YITIAN (author) / HAN JIANSHEN (author)
2024-04-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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