Ngokwengxelo yamva nje, isizukulwana esilandelayo semathiriyeli edibeneyo sinokubeka iliso kwimo yaso yezempilo, kwaye siqheleke.
Imidibaniso yosinga lwekhabhoni iyakhaphukhaphu kwaye yomelele kwaye ibalulekile kwizinto zolwakhiwo kwiimoto, iinqwelomoya kunye nezinye iindlela zothutho. Ziquka i-polymer substrates, ezifana ne-epoxy resins, ezifakwe kunye ne-carbon fibers eqinisiweyo. Ngenxa yeempawu ezahlukeneyo zomatshini wezinto ezimbini, iifibers ziya kuwa kwi-substrate phantsi koxinzelelo olugqithisileyo okanye ukukhathala. Oku kuthetha ukuba umonakalo kwisakhiwo se-carbon fiber composite usenokufihlwa ngaphantsi komhlaba kwaye awukwazi ukubonwa ngeso lenyama, nto leyo enokubangela ukusilela kwintlekele.
"Ngokuqonda ngaphakathi kwee-composites, unokugweba ngcono impilo yabo kwaye wazi ukuba kukho nawuphi na umonakalo omele ulungiswe," uRidge Chris Bowland, umphandi
ILebhu yeSizwe ye-Oak Ridge kwiSebe lezaMandla lase-US (i-Oak National Laboratory) iWigner. Kutshanje, u-Amit Naskar, intloko yekhabhoni kunye neqela lee-composites e-Bowland nase-ORNL, uye wayila indlela yokugoqa i-carbon fibers kwi-semiconductor silicon carbide nanoparticles. i-polymer, iifayibha zenza igridi yamandla, kwaye i-composites eninzi iqhuba umbane we-semiconductor nanoparticles inokutshabalalisa le ntshukumo yombane phantsi kwesenzo samandla angaphandle, ukongeza imisebenzi yombane kunye nombane kwi-composites, ukudibanisa kweefayili ezifihliweyo kuya kutshatyalaliswa kwaye ukuxhathisa kwizinto eziphathekayo kuya kutshintsha ikhompyutha yenqwelomoya ukubonisa ukuba iphiko liphantsi koxinzelelo olukhulu kwaye licebise uvavanyo I-rolling strip demonstration ye-ORNL ingqina ngokomgaqo ukuba indlela inokuvelisa isizukulwana esilandelayo semicu edibeneyo edibeneyo kwizinga elikhulu.I-self-sensive composites, mhlawumbi eyenziwe kwi-polymer substrates kunye nexabiso eliphantsi le-carbon fibers, kubandakanywa ne-carquitous kwi-oda le-carquitous kwizakhiwo iifiber ezifakwe kwi-nanoparticles, abaphandi bafakela i-carbon fiber spools ephezulu kwi-roller, kwaye ii-roller zifake iifayili kwi-epoxy resins, equkethe i-nanoparticles ekhoyo kwimarike, ububanzi bayo malunga nobubanzi bentsholongwane (45-65 nm).
Iintsinga ke zomiswa kwi-oven ukuze zikhuseleke ukugquma. Ukuze uvavanye amandla eefayili ezifakwe kwii-nanoparticles ezifakwe kwi-polymer substrate, abaphandi benza iiplanga ze-fiber-reinforced composite, ezicwangciswe kwi-One Direction.I-Bowland iqhube uvavanyo loxinzelelo apho iziphelo ze-cantilever zilungisiwe, ngelixa umatshini ovavanya iipropati ze-mechanical zisetyenziselwa i-thrust ye-thrust phakathi kwe-beam. Ukuze ufunde amandla okuvalelwa kwezinto ezidibeneyo, wafaka i-electrodes kumacala omabini e-cantilever beam. Kumatshini owaziwa ngokuba yi "Dynamic mechanical analyzer," unqumle isiphelo esinye ukugcina icantilever imile. Umatshini usebenzisa amandla kwelinye icala ukugoba i-beam yokumiswa ngelixa i-Bowland ibeka esweni utshintsho lokumelana. U-ORNL, umphandi wasemva kobugqirha uNgoc Nguyen, wenze iimvavanyo ezongezelelweyo kwi-Fourier Transform Infrared spectrometer ukufunda iibhondi zekhemikhali kwii-composites kunye nokuphucula ukuqonda ukomelezwa kwamandla omatshini abonwayo. Abaphandi baphinde bavavanya amandla okutshatyalaliswa kwamandla ee-composites ezenziwe ngamanani ahlukeneyo e-nanoparticles (elinganiswe ngokuziphatha kokudambisa i-vibration), eya kunceda ukuphendulwa kwezixhobo zesakhiwo kwizinto ezothusayo, ukungcangcazela kunye nolunye uxinzelelo kunye nemithombo yoxinzelelo. Kwinqanaba ngalinye, i-nanoparticles inokuphucula ukuchithwa kwamandla (ukusuka kwi-65% ukuya kwi-257% ukuya kwiidigri ezihlukeneyo). I-Bowland kunye ne-Naskar baye bafaka isicelo selungelo elilodwa lomenzi wechiza ekwenzeni imidibaniso ye-carbon fibre ezivayo.
"Iingubo ezifakwe ngaphakathi zibonelela ngendlela entsha yokusebenzisa i-nanomaterials entsha ephuhliswayo. "Utshilo u-Bowland. Uphononongo luxhaswe ngophando kunye neeprojekthi zophuhliso ezilawulwa yi-ORNL Laboratory, epapashwe kwiphephancwadi i-ACS Applied Materials kunye ne-Interfaces (Izixhobo eziSetyenzisiweyo kunye ne-Interfaces) ye-American Chemical Society.
Ixesha lokuposa: Dec-07-2018