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A platform for research: civil engineering, architecture and urbanism
Carbon-carbon composite material preform and preparation method thereof
The invention discloses a carbon-carbon composite material preform and a preparation method thereof, and relates to the technical field of composite materials, pores of the preform are filled with chopped fibers, the density of the prepared preform is improved, and compared with a traditional carbon fiber preform, the preparation period of a carbon-carbon composite material deposited to 1.6 g/cm < 3 > can be shortened by about 50%. The pre-fabricated body is subjected to oblique needling, and the filled chopped fibers are needled together, so that the number of fibers in the longitudinal direction of the pre-fabricated body is increased, fiber shearing is converted into fiber tension, the interlayer shearing performance of the pre-fabricated body is greatly improved, and the interlayer shearing strength of the deposited carbon-carbon composite material is improved by about 15%.
本发明公开了碳碳复合材质预制体及其制备方法，涉及复合材料技术领域，将短切纤维填补了预制体孔隙，制得的预制体密度提高，相比于传统碳纤维预制体，沉积至1.6g/cm3的碳碳复合材料制备周期可缩短50％左右。对预制体进行斜向针刺，将填充的短切纤维一同针刺，增多了预制体纵向方向的纤维，将纤维受剪转化为纤维受拉，大幅提高预制体的层间剪切性能，使沉积后的碳碳复合材料层间剪切强度提升了15％左右。
Carbon-carbon composite material preform and preparation method thereof
The invention discloses a carbon-carbon composite material preform and a preparation method thereof, and relates to the technical field of composite materials, pores of the preform are filled with chopped fibers, the density of the prepared preform is improved, and compared with a traditional carbon fiber preform, the preparation period of a carbon-carbon composite material deposited to 1.6 g/cm < 3 > can be shortened by about 50%. The pre-fabricated body is subjected to oblique needling, and the filled chopped fibers are needled together, so that the number of fibers in the longitudinal direction of the pre-fabricated body is increased, fiber shearing is converted into fiber tension, the interlayer shearing performance of the pre-fabricated body is greatly improved, and the interlayer shearing strength of the deposited carbon-carbon composite material is improved by about 15%.
本发明公开了碳碳复合材质预制体及其制备方法，涉及复合材料技术领域，将短切纤维填补了预制体孔隙，制得的预制体密度提高，相比于传统碳纤维预制体，沉积至1.6g/cm3的碳碳复合材料制备周期可缩短50％左右。对预制体进行斜向针刺，将填充的短切纤维一同针刺，增多了预制体纵向方向的纤维，将纤维受剪转化为纤维受拉，大幅提高预制体的层间剪切性能，使沉积后的碳碳复合材料层间剪切强度提升了15％左右。
Carbon-carbon composite material preform and preparation method thereof
碳碳复合材质预制体及其制备方法
KONG LINGHUA (author) / CHEN KAI (author) / ZHENG HONGWEI (author) / LIU CHUANYONG (author) / YU JIZHI (author)
2023-08-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021
| European Patent Office | 2021
| European Patent Office | 2021
| European Patent Office | 2021
| European Patent Office | 2021