Ukusetshenziswa kwe-Ultra-Short Carbon Fiber

Njengelungu eliyisihluthulelo senkambu yezinhlanganisela ezithuthukisiwe, i-ultra-short carbon fiber, enezici zayo eziyingqayizivele, ibangele ukunakwa okusabalele emikhakheni eminingi yezimboni nezobuchwepheshe. Ihlinzeka ngesixazululo esisha sha sokusebenza okuphezulu kwezinto zokwakha, futhi ukuqonda okujulile kobuchwepheshe bokusebenzisa kwayo nezinqubo kubalulekile ukuze kuqhutshekwe nokuthuthukiswa kwezimboni ezihlobene.

I-electron micrographs ye-ultrashort carbon fibers

Ngokuvamile, ubude bemicu ye-ultra-short carbon fibers buphakathi kuka-0.1 - 5mm, futhi ukuminyana kwabo kuphansi ku-1.7 - 2g/cm³. Ngokuminyana okuphansi okungu-1.7 – 2.2g/cm³, amandla aqinile angu-3000 – 7000MPa kanye nemodulus yokunwebeka okungu-200 – 700GPa, lezi zici zemishini ezinhle kakhulu zakha isisekelo sokusetshenziswa kwazo ezakhiweni ezithwala imithwalo. Ngaphezu kwalokho, inokumelana okuhle kakhulu nezinga lokushisa eliphezulu, futhi ingamelana nezinga lokushisa elingaphezu kuka-2000°C endaweni engafaki i-oxidizing.

Ubuchwepheshe Besicelo kanye Nenqubo ye-Ultra-short Carbon Fiber ku-Aerospace Field

Emkhakheni we-aerospace, i-ultra-short carbon fiber isetshenziselwa ukuqinisainhlakaizinhlanganisela ze-matrix. Ukhiye wobuchwepheshe ukwenza i-carbon fibre ihlakazeke ngokulinganayo ku-resin matrix. Isibonelo, ukwamukela ubuchwepheshe bokuhlakazeka kwe-ultrasonic kungaphula ngokuphumelelayo ukwenzeka kwe-carbon fiber agglomeration, ukuze i-coefficient yokusabalalisa ifinyelele ngaphezu kwama-90%, iqinisekise ukuhambisana kwezinto ezibonakalayo. Ngesikhathi esifanayo, ukusetshenziswa kwe-fiber surface treatment technology, njengokusebenzisai-ejenti yokuhlanganisaukwelashwa, kungenza ii-carbon fiberfuthi amandla ebhondi ye-resin interface akhuphuke ngo-30% - 50%.

Ekwenzeni amaphiko endiza nezinye izingxenye zesakhiwo, ukusetshenziswa kwenqubo yethangi lokucindezela okushisayo. Okokuqala, i-ultra-short carbon fiber kanye ne-resin exutshwe nengxenye ethile eyenziwe nge-prepreg, egqinsiwe ethangini lokucindezela elishisayo. Bese ilapheka futhi ibunjwe ezingeni lokushisa elingu-120 – 180°C kanye nomfutho ongu-0.5 – 1.5MPa. Le nqubo ingakhipha ngempumelelo amabhamuza omoya ezintweni eziyinhlanganisela ukuze kuqinisekiswe ukuminyana nokusebenza okuphezulu kwemikhiqizo.

Ubuchwepheshe Nezinqubo Zokusetshenziswa Kwe-Ultra-Short Carbon Fiber Embonini Yezimoto

Uma usebenzisa i-ultra-short carbon fiber ezingxenyeni zezimoto, kugxilwe ekuthuthukiseni ukuhambisana kwayo nezinto eziyisisekelo. Ngokungeza ama-compatibilizers athile, ukunamathela kobuso phakathi kwe-carbon fibers nezinto eziyisisekelo (isb.i-polypropylene, njll.) inganyuswa cishe ngo-40%. Ngesikhathi esifanayo, ukuze kuthuthukiswe ukusebenza kwayo ezindaweni ezicindezelayo eziyinkimbinkimbi, ubuchwepheshe bokuklama i-fiber orientation busetshenziselwa ukulungisa indlela yokuqondisa i-fiber ngokuvumelana nesiqondiso sokucindezeleka engxenyeni.

Inqubo yokubumba umjovo ivame ukusetshenziswa ekwenzeni izingxenye ezinjengama-hoods ezimoto. Amafayibha ekhabhoni amafushane kakhulu axutshwa nezinhlayiya zepulasitiki abese ejova emgodini wesikhunta ngokusebenzisa izinga lokushisa eliphezulu nokucindezela. Izinga lokushisa lomjovo livamise ukuba ngu-200 – 280 ℃, ingcindezi yomjovo ingu-50 – 150 MPa. Le nqubo ingakwazi ukubona ukubunjwa okusheshayo kwezingxenye eziyinkimbinkimbi ezimise, futhi ingaqinisekisa ukusatshalaliswa okufanayo kwe-carbon fibers emikhiqizweni.

Ubuchwepheshe kanye Nenqubo Yokusebenzisa I-Ultra-short Carbon Fiber Application ku-Electronics Field

Emkhakheni wokukhipha ukushisa kwe-elekthronikhi, ukusetshenziswa kwe-thermal conductivity ye-ultra-short carbon fibers kubalulekile. Ngokulungiselela idigri ye-graphitization ye-carbon fiber, ukuqhutshwa kwayo okushisayo kungakhushulwa kube ngaphezu kuka-1000W/(mK). Khonamanjalo, ukuqinisekisa ukuthintana kwayo okuhle nezingxenye ze-elekthronikhi, ubuchwepheshe be-metallization obuphezulu, njenge-chemical nickel plating, bunganciphisa ukumelana ne-carbon fibre ngaphezu kwama-80%.

Inqubo ye-powder metallurgy ingasetshenziswa ekwenzeni ama-heatsink e-CPU ekhompyutha. I-ultra-short carbon fiber ixutshwa nempushana yensimbi (isb. impushana yethusi) bese ifakwa ngaphansi kwezinga lokushisa eliphezulu nokucindezela. Izinga lokushisa le-sintering ngokuvamile lingama-500 - 900 ° C kanti ingcindezi ingu-20 - 50 MPa. Le nqubo yenza i-carbon fiber yenze umzila omuhle wokushisa ukushisa ngensimbi futhi ithuthukise ukusebenza kahle kokukhipha ukushisa.

Kusukela ku-aerospace kuya embonini yezimoto kuye kweye-elekthronikhi, ngokusungulwa okusha okuqhubekayo kobuchwepheshe kanye nokwenza ngcono inqubo, i-ultra-shorti-carbon fiberizokhanya emikhakheni eyengeziwe, ifake amandla anamandla esayensi yesimanje nobuchwepheshe kanye nokuthuthukiswa kwezimboni.