Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a method for preparing a large-size carbon-carbon crucible by three-dimensional weaving of carbon fibers, which comprises the following steps: S1, preparing a carbon/carbon composite material by using a 2.5 D needled carbon felt as a reinforcement and a phenolic resin solution as a precursor; s2, interweaving the prepared carbon/carbon composite material to prepare a prefabricated part; s3, performing CVI (Chemical Vapor Infiltration) densification on the prefabricated part to complete material permeation molding, so as to prepare a molded part; s4, the formed part is put into a heating furnace to be subjected to high-temperature heat treatment; s5, machining the formed part subjected to high-temperature heat treatment to prepare a rough blank of the crucible, and then carrying out outer surface treatment on the rough blank; s6, the crude blank subjected to surface treatment is put into a vapor deposition furnace, deposition is conducted through vacuumizing heating and propane and argon introduction, the crude blank is taken out after deposition, and the carbon-carbon crucible is obtained.The carbon fibers can better bear external loads, the strength and rigidity of the fibers can be improved, and therefore the overall quality of the crucible is improved.
本发明公开了一种碳纤维三维编织制备大尺寸碳碳坩埚的方法，包括以下步骤:S1、以2.5D针刺碳毡为增强体，酚醛树脂溶液为先驱体，制备碳/碳复合材料；S2、将制备好的碳/碳复合材料进行交织，制备成预制件；S3、将预制件通过CVI致密完成材料渗透成型，制备出成型件；S4、将成型件放入到加热炉中进行高温热处理；S5、将高温热处理后的成型件通过机加工制成坩埚的粗胚件，再将粗胚件进行外表面处理；S6、将表面处理后的粗胚件放入到气相沉淀炉中，通过抽真空加热，通入丙烷和氩气进行沉积，沉积后将粗胚件取出获得碳碳坩埚，本发明碳纤维能够更好的承受外加载荷，纤维的强度和刚度均会提升，从而提升坩埚的整体品质。
The invention discloses a method for preparing a large-size carbon-carbon crucible by three-dimensional weaving of carbon fibers, which comprises the following steps: S1, preparing a carbon/carbon composite material by using a 2.5 D needled carbon felt as a reinforcement and a phenolic resin solution as a precursor; s2, interweaving the prepared carbon/carbon composite material to prepare a prefabricated part; s3, performing CVI (Chemical Vapor Infiltration) densification on the prefabricated part to complete material permeation molding, so as to prepare a molded part; s4, the formed part is put into a heating furnace to be subjected to high-temperature heat treatment; s5, machining the formed part subjected to high-temperature heat treatment to prepare a rough blank of the crucible, and then carrying out outer surface treatment on the rough blank; s6, the crude blank subjected to surface treatment is put into a vapor deposition furnace, deposition is conducted through vacuumizing heating and propane and argon introduction, the crude blank is taken out after deposition, and the carbon-carbon crucible is obtained.The carbon fibers can better bear external loads, the strength and rigidity of the fibers can be improved, and therefore the overall quality of the crucible is improved.
本发明公开了一种碳纤维三维编织制备大尺寸碳碳坩埚的方法，包括以下步骤:S1、以2.5D针刺碳毡为增强体，酚醛树脂溶液为先驱体，制备碳/碳复合材料；S2、将制备好的碳/碳复合材料进行交织，制备成预制件；S3、将预制件通过CVI致密完成材料渗透成型，制备出成型件；S4、将成型件放入到加热炉中进行高温热处理；S5、将高温热处理后的成型件通过机加工制成坩埚的粗胚件，再将粗胚件进行外表面处理；S6、将表面处理后的粗胚件放入到气相沉淀炉中，通过抽真空加热，通入丙烷和氩气进行沉积，沉积后将粗胚件取出获得碳碳坩埚，本发明碳纤维能够更好的承受外加载荷，纤维的强度和刚度均会提升，从而提升坩埚的整体品质。
Method for preparing large-size carbon-carbon crucible through three-dimensional weaving of carbon fibers
一种碳纤维三维编织制备大尺寸碳碳坩埚的方法
LI BAI (Autor:in)
19.08.2022
Patent
Elektronische Ressource
Chinesisch
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