Tichikurudzirwa nekuchinjika uye kusimba kwemadandemutande edandemutande, chikwata chetsvakurudzo chinotungamirirwa naProf. YU Shuhong kubva kuYunivhesiti yeSainzi neTekinoroji yeChina (USTC) vakagadzira nzira iri nyore uye yakajairika yekugadzira superelastic uye kuneta isingaite hard carbon aerogels ine nanofibrous. network chimiro nekushandisa resorcinol-formaldehyde resin seyakaoma kabhoni sosi.

In recent decades, carbon aerogels have been widely explored by using graphitic carbons and soft carbons, which show advantages in superelasticity. These elastic aerogels usually have delicate microstructures with good fatigue resistance but ultralow strength. Hard carbons show great advantages in mechanical strength and structural stability due to the sp3 C-induced turbostratic “house-of-cards” structure. However, the stiffness and fragility clearly get in the way of achieving superelasticity with hard carbons. Up to now, it is still a challenge to fabricate superelastic hard carbon-based aerogels.

Iyo polymerization ye resin monomers yakatangwa pamberi penanofibers semagadzirirwo matemplate ekugadzirira hydrogel ine nanofibrous network, ichiteverwa nekuomesa uye pyrolysis kuti iwane yakaoma kabhoni aerogel. Munguva yepolymerization, mamonomers anoisa pamatemplate uye weld iyo fiber-fiber majoini, ichisiya isina kujairika network ine majoini makuru akasimba. Uyezve, zvimiro zvemuviri (zvakadai semadhayamita e nanofiber, densities yeaerogels, uye mashandiro emuchina) anogona kudzorwa nekungorongedza matemplate uye huwandu hwezvigadzirwa.

Nekuda kweakaomesesa kabhoni nanofibers uye akawanda welded majoini pakati pe nanofibers, iyo yakaoma kabhoni aerogels inoratidza yakasimba uye yakagadzikana mitambo yemitambo, kusanganisira super-elasticity, simba repamusoro, kukurumidza kukurumidza kupora (860 mm s-1) uye yakaderera simba kurasikirwa coefficient ( <0.16). Mushure mekuedzwa pasi pe50% kuomerwa kwegumi nemana, iyo kabhoni airgel inoratidza chete 2% yepurasitiki deformation, uye inochengeta 93% yekutanga kushushikana.

Iyo yakaoma kabhoni airgel inogona kuchengetedza iyo super-elasticity mumamiriro akaoma, senge mumvura nitrogen. Zvichienderana nezvinoyevedza zvemuchina, iyi yakaoma kabhoni airgel ine chivimbiso mukushandiswa kwemasensi sensors ane kugadzikana kwepamusoro uye yakafara detective renji (50 KPa), pamwe neanotambanuka kana bendable conductors. Iyi nzira ine vimbiso yekuwedzerwa kugadzira mamwe asiri-kabhoni akavakirwa composite nanofibers uye inopa inovimbisa nzira yekushandura yakaoma zvinhu kuita elastic kana inochinjika zvinhu nekugadzira iyo nanofibrous microstructures.