1、特性分析J内蒙古工业大学学报(自然科学版)，2022，41(4):379384 9PATHAK A K，BOAH M，GUPTA A，et al Improved me-chanical properties of carbon fiber/graphene oxide-epoxy hybridcompositesJ Composites Science Technology，2016，135(27):2838 10 LIU L，YAN F，LI M，et al Improving interfacial properties ofhierarchical reinforcement carb
2、on fibers modified by grapheneoxide with different bonding typesJ Composites Part A，2018，107(6):616625 11 乔允允，李俊峰，姜燕，等 表面处理对碳纤维/聚苯硫醚复合材料性能的影响J合成纤维工业，2017，40(5):711 12 VENUGOPALAN ，OY M，THOMAS S，et al Effect ofimpregnation pressure and time on the porosity，structure andproperties of polyacrylonitrile
3、-fiber based carbon composites J Journal of Nuclear Materials，2013，433(1/2/3):49450313 GUAN J T，QI L H，LIU J，et al Threshold pressure and infil-tration behavior of liquid metal into fibrous preformJ Trans-actions of Nonferrous Metals Society of China，2013，23(11):31733179 14 MASU L J，MOTENSEN A，CONIE
4、 J A，et al Infiltra-tion of fibrous preforms by a pure metal:Part II ExperimentJ Metallurgical Transactions A，1989，20(11):25492557 15 王杰 真空浸渗热压形状记忆复合材料及其性能研究D 西安:西安电子科技大学，2021 16 张旭，王玉敏，杨青，等 SiCf/TC17 复合材料拉伸行为研究 J金属学报，2015，51(9):10251037Effect of extrusion pressure on microstructure and bendingprope
5、rties of CF/EP compositeZHANG Yuyang1，MA Yuqin2，WANG Hao2，WANG Yinghao2，ZHANG Zhan3(1 School of Aeronautical Engineering，Shaanxi Industrial Polytechnic，Xianyang 712000;2 Key Laboratory of oadConstruction Technology and Equipment of Ministry of Education，School of Engineering Machinery，ChanganUnivers
6、ity，Shaanxi 710064;3 Xianyang Intellectual Property Office，Xianyang 712000)Abstract:Using E44 epoxy resin(EP)as matrix and T700 unidirectional carbon fiber(CF)cloth as reinforcement，CF/EPcomposite laminates were prepared by liquid infiltration method under an extrusion pressure of 15 MPa The effects
7、 of extrusionpressure on the microstructure and bending properties of CF/EP composite laminates were studied The results showed that ex-tremely low extrusion pressure impacted the infiltration effect of EP matrix and caused that CF could not play the role of reinforce-ment，while extremely high extru
8、sion pressure caused the partial press-out of EP that had been infiltrated into the CF preform;theEP matrix was fully and uniformly infiltrated in the CF and the fiber was tightly bonded to the matrix，indicating a good infiltrationeffect which effectively enhanced the bearing capacity of the composi
9、te，when the extrusion pressure was 3 MPa;the bendingstrength and maximum bending force of CF/EP composite increased first and then decreased with the increase of extrusion pres-sure and was maximized as 465 MPa and 38317 N，respectively，when the extrusion pressure was 3 MPa;and the compositebroke nea
10、tly with the ductile fracture mode of the matrix and exhibited the best bending property when the extrusion pressure forpreparing CF/EP composite laminates was optimized as 3 MPaKey words:carbon fiber;epoxy resin;composite materials;liquid infiltration;extrusion pressure;microstructure;bendingproper
11、ty国内外动态日本 2023 年 1 月化纤生产与库存概况2023 年 2 月 27 日，日本化纤协会 新闻稿 发表了日本 2023 年 1 月化学纤维生产与库存概况。(1)生产动向化学纤维产量为 58 562 t，同比下降 71%。其中，合成纤维产量为 46 045 t，同比下降 58%。从主要品种看，锦纶长丝产量为 6 623 t，同比下降08%;腈纶短纤维产量为 7 056 t，同比下降 55%;涤纶长丝产量为 8 124 t，同比下降 95%;涤纶短纤维产量为6 229 t，同比下降 124%。(2)库存动向化学纤维库存 104 002 t，环比增长 63%，同比增长 78%。其中，合成纤维库存 82 187 t，环比增长82%，同比增长 195%。从主要品种看，锦纶长丝库存 12 999 t，环比增长 123%;腈纶短纤维库存 21 235 t，环比增长49%;涤纶长丝库存 9 689 t，环比增长 61%;涤纶短纤维库存 13472 t，环比增长 117%。(通讯员王德诚)82合成纤维工业2023 年第 46 卷
