CARBON FIBER PREFORM AND PRODUCTION METHOD THEREFOR, AND HIGH-TEMPERATURE-RESISTANT CARBON-CARBON COMPOSITE

WIPO Patent Application WO/2023/124122

A1

A carbon fiber preform and a production method therefor. The production method comprises: laying at least one layer of a first carbon fiber web on a surface of a carbon fiber aggregate, and then performing needling to form a composite fabric; and arranging a preform main body on the outer surface of a mold. The preform main body is formed by stacking m unit layers, and at least one first region and one second region exist in the preform main body. The density of short carbon fiber filaments penetrating through the unit layer in the first region is greater than the density of short carbon fiber filaments penetrating through the unit layer in the second region, and the unit layer is formed by laying, after the composite fabric is wound, at least one layer of a second carbon fiber web. The first region can greatly increase the longitudinal binding force of the carbon fiber preform, the second region can reduce the damage of longitudinal penetration to continuous carbon fiber bundles and long fibers in wound wires, and the service life of the carbon fiber preform is prolonged by means of the combined action of the first region and the second region.

DU LULU (CN)
ZHAO LINGHANG (CN)
CHENG LU (CN)
YAO HONG (CN)
DUAN BIN (CN)
FAN WENBIN (CN)
HUANG ZHIPENG (CN)
GAO PANHONG (CN)

PCT/CN2022/113343

July 06, 2023

August 18, 2022

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LONGI GREEN ENERGY TECHNOLOGY CO LTD (CN)

B32B7/09; B32B5/06; B32B9/00

CN110722709A	2020-01-24
CN110253979A	2019-09-20
CN103909691A	2014-07-09
CN105332166A	2016-02-17
CN217124165U	2022-08-05
US20180258566A1	2018-09-13

BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)

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