Masu bincike na kasar Sin suna haɓaka iska mai ƙarfi da ƙarfi a cikin ƙasa

An yi wahayi game da sassauci da tsauraran matakan gizo-gizo na gizo-gizo, wata ƙungiyar bincike ta Farfesa YU Shuhong daga Jami'ar Kimiyya da Fasaha ta China (USTC) ta haɓaka hanya mai sauƙi da janar don ƙirƙirar matsanancin ƙarfi da gajiya mai tsayayya da matsanancin carbon aerogels tare da nanofibrous Tsarin hanyar sadarwa ta hanyar amfani da resorcinol-formdehyde resin azaman tushen carbon mai wuya.

Chinese researchers develop superelastic hard carbon nanofiber aerogels1

A cikin shekarun baya-bayan nan, ana binciken sararin samaniya ta carbon ta amfani da carbons mai zane da carbons mai laushi, wanda ke nuna alfanun superelasticity. Wadannan matattarar iska na roba suna da ƙananan ƙwayoyin cuta masu laushi tare da juriya mai ƙarfi amma ƙarfin ƙarfi. Abubuwan carbons masu wuya suna nuna babbar fa'ida a cikin ƙarfin injin ɗinka da kwanciyar hankali saboda ƙirar sp3 C-turbostratic “house-of-cards”. Koyaya, tsananin taushi da kazanta a sarari suna zuwa kan hanyar cimma juzu'i tare da carbons mai ƙarfi. Har wa yau, har yanzu babban kalubale ne ga kera matattarar iska mai aiki da iska mai lalacewa.

Polymerization na resin monomers an fara shi ne a gaban nanofibers a matsayin tsarin shaci don shirya hydrogel tare da nanofibrous cibiyoyin, tare da bushewa da pyrolysis don samun wahalar carbongel. A yayin polymerization, masu monomers suna saka kan shaci kuma suna ɗaurin haɗin haɗin fiber-fiber, suna barin tsarin cibiyar yanar gizo bazuwar tare da haɗin gwiwa mai ƙarfi. Haka kuma, za a iya sarrafa kaddarorin ta jiki (kamar su diamita na Nanofiber, yawan sinadarin aerogels, da kaddarorin kayan injiniya) ta hanyar sauya samfuri da adadin kayan masarufi.

Saboda da wuya carbon nanofibers da yawa welded gidajen abinci tsakanin nanofibers, da wuya carbon aerogels nuna mai ƙarfi da kuma barga inji aikin, ciki har da super-elasticity, babban ƙarfi, sosai saurin dawo da sauri (860 mm s-1) da kuma low makamashi asara mai aiki ( <0.16). Bayan an gwada shi a karkashin damuwa 50% don hawan keke, carbon airgel yana nuna lalata 2% na filastik kawai, kuma yana riƙe da damuwa na asali 93%.

Jirgin carbon mai wuya zai iya kula da super-elasticity a cikin matsanancin yanayi, kamar a cikin ruwa mai ruwa. Dangane da kyawawan kaddarorin injiniyan, wannan ƙarfe carbon airgel yana da alkawari a cikin aikace-aikacen na'urori masu auna damuwa tare da babban kwanciyar hankali da kewayon mai ganowa mai mahimmanci (50 KPa), kazalika da mai shimfiɗa ko mai ɗaukar hoto. Wannan hanyar tana da alkawalin da za a fadada don yin wasu abubuwan da ba a haɗa da carbon din ba kuma suna samar da hanyar da ta dace ta canza kayanka masu rikitarwa zuwa kayan roba ko sassauya ta hanyar zayyana ƙananan abubuwan keɓaɓɓu.


Lokacin aikawa: Mar-13-2020