Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the technical field of ceramic composite materials, in particular to a silicon dioxide ceramic-based composite material and a preparation method thereof. The preparation method comprises the steps that the edge of a flat fabric is coated with organic silicon resin, after curing is completed, the flat fabric is soaked with silicon dioxide sol, and drying and high-temperature treatment are carried out and the silicon dioxide ceramic-based composite material is obtained. According to the invention, the hollow quartz fibers are adopted for preparing the fabric with the high fiber volume content, organic silicon resin is used for conducting hydrophobization edge sealing treatment on the edges of the fabric, the ends of the hollow fibers are hydrophobized, and the silicon dioxide sol is difficult to enter the hollow fibers in the dipping process, so that under the condition that the density of a composite material matrix is not reduced, the overall density of the composite material can be reduced. Compared with a material prepared from solid fibers, the prepared composite material has better dielectric property and heat insulation property, and meanwhile, can keep higher mechanical strength.
本发明涉及陶瓷复合材料技术领域，尤其涉及一种二氧化硅陶瓷基复合材料及其制备方法，所述制备方法包括：使用有机硅树脂将平板织物边缘涂覆，完成固化后，采用二氧化硅溶胶浸渍平板织物，经过干燥和高温处理后，得到二氧化硅陶瓷基复合材料；本发明采用空心石英纤维制备高纤维体积含量织物，并用有机硅树脂对织物边缘进行疏水化封边处理，将空心纤维端头进行疏水化，使浸渍过程中二氧化硅溶胶难以进入空心纤维内部，在不降低复合材料基体致密度的情形下，降低了复合材料整体的密度，制备的复合材料较采用实心纤维制备的材料具有更好的介电性能、隔热性能，同时还能保持较高的力学强度。
The invention relates to the technical field of ceramic composite materials, in particular to a silicon dioxide ceramic-based composite material and a preparation method thereof. The preparation method comprises the steps that the edge of a flat fabric is coated with organic silicon resin, after curing is completed, the flat fabric is soaked with silicon dioxide sol, and drying and high-temperature treatment are carried out and the silicon dioxide ceramic-based composite material is obtained. According to the invention, the hollow quartz fibers are adopted for preparing the fabric with the high fiber volume content, organic silicon resin is used for conducting hydrophobization edge sealing treatment on the edges of the fabric, the ends of the hollow fibers are hydrophobized, and the silicon dioxide sol is difficult to enter the hollow fibers in the dipping process, so that under the condition that the density of a composite material matrix is not reduced, the overall density of the composite material can be reduced. Compared with a material prepared from solid fibers, the prepared composite material has better dielectric property and heat insulation property, and meanwhile, can keep higher mechanical strength.
本发明涉及陶瓷复合材料技术领域，尤其涉及一种二氧化硅陶瓷基复合材料及其制备方法，所述制备方法包括：使用有机硅树脂将平板织物边缘涂覆，完成固化后，采用二氧化硅溶胶浸渍平板织物，经过干燥和高温处理后，得到二氧化硅陶瓷基复合材料；本发明采用空心石英纤维制备高纤维体积含量织物，并用有机硅树脂对织物边缘进行疏水化封边处理，将空心纤维端头进行疏水化，使浸渍过程中二氧化硅溶胶难以进入空心纤维内部，在不降低复合材料基体致密度的情形下，降低了复合材料整体的密度，制备的复合材料较采用实心纤维制备的材料具有更好的介电性能、隔热性能，同时还能保持较高的力学强度。
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