Malinga ndi lipoti laposachedwa, m'badwo wotsatira wa zida zophatikizika ukhoza kuyang'anira momwe thanzi lawo limakhalira, ndikukhala wamba.
Ma composites a carbon fiber ndi opepuka komanso olimba ndipo ndi zida zofunika pamagalimoto, ndege ndi njira zina zoyendera. Amakhala ndi magawo a polima, monga ma epoxy resins, omwe amaphatikizidwa ndi ulusi wa carbon. Chifukwa cha mawotchi osiyanasiyana azinthu ziwirizi, ulusiwo udzagwa kuchokera ku gawo lapansi chifukwa cha kupsinjika kwakukulu kapena kutopa. Izi zikutanthauza kuti kuwonongeka kwa kapangidwe ka carbon fiber kungakhale kobisika pansi pa nthaka ndipo sikungathe kudziwika ndi maso, zomwe zingayambitse kulephera koopsa.
"Pomvetsetsa mkati mwa zophatikizira, mutha kuweruza bwino thanzi lawo ndikudziwa ngati pali zowonongeka zomwe zikuyenera kukonzedwa," Ridge Chris Bowland, wofufuza pa kafukufukuyu.
Oak Ridge National Laboratory ku US Department of Energy (Oak National Laboratory) Wigner. "Posachedwapa, Amit Naskar, wamkulu wa gulu la carbon and composites ku Bowland ndi ORNL, adatulukira njira yopangira mizere yozungulira yopangira ma semiconductor silicon carbide nanoparticles. ma polima, ulusi umapanga gulu lamagetsi, ndipo ma composites ambiri amayendetsa magetsi a Semiconductor nanoparticles amatha kuwononga ma conductivity a magetsi akunja, ndikuwonjezera ntchito zamakina ndi zamagetsi kumaguluwo, kulumikizidwa kwa ulusi wophimbidwa kudzawonongedwa ndipo kukana kwa zinthuzo kungasinthe kompyuta ndege kusonyeza kuti mapiko ali pansi pa kupsyinjika kwambiri ndi akusonyeza chiyeso The anagubuduza Mzere chionetsero cha ORNL amatsimikizira mfundo kuti njira angatulutse m'badwo wotsatira wa ulusi TACHIMATA pamlingo waukulu.Kudzimva composites, mwina opangidwa kuchokera zongowonjezwdwa polima magawo ndi otsika mtengo ulusi carbon, kuphatikizapo zopangira carquitous kupanga ubi ulusi wophatikizidwa mu nanoparticles, ofufuzawo adayika ma spools apamwamba kwambiri a carbon fiber pa zodzigudubuza, ndipo zodzigudubuza zidaviika ulusiwo mu resin epoxy, yomwe ili ndi ma nanoparticles pamsika, m'lifupi mwake ndi pafupifupi m'lifupi mwa kachilomboka (45-65 nm).
Kenako ulusiwo umaumitsidwa mu uvuni kuti uphike bwino. Pofuna kuyesa mphamvu ya ulusi wophatikizidwa mu nanoparticles womangiriridwa ku gawo lapansi la polima, ofufuzawo adapanga matabwa opangidwa ndi fiber, omwe adakonzedwa mu One Direction.The Bowland adayesa kupsinjika komwe malekezero a cantilever adakhazikika, pomwe makina omwe amawunika zida zamakina adagwiritsidwa ntchito mpaka pakati pa beam adalephera. Kuti aphunzire luso lozindikira la zinthu zophatikizika, adayika maelekitirodi mbali zonse za mtengo wa cantilever. Mu makina otchedwa "Dynamic mechanical analyzer," adadula mbali imodzi kuti cantilever isagwe. Makinawa amagwiritsa ntchito mphamvu kumbali ina kuti apirire mtengo woyimitsidwa pomwe Bowland amayang'anira kusintha kwa kukana. ORNL, wofufuza wa postdoctoral Ngoc Nguyen, adayesanso mayeso owonjezera mu Fourier Transform Infrared spectrometer kuti aphunzire zomangira zamakemikolo mumagulu komanso kumvetsetsa mphamvu zamakina zomwe zimawonedwa. Ofufuzawo adayesanso kuthekera kwa mphamvu yotaya mphamvu yamagulu opangidwa ndi mitundu yosiyanasiyana ya nanoparticles (yoyezedwa ndi kugwedera kwamadzimadzi), zomwe zimathandizira kuyankhidwa kwazinthu zamapangidwe kuti zigwedezeke, kugwedezeka ndi kupsinjika kwina ndi zovuta zina. Pa ndende iliyonse, nanoparticles amatha kupititsa patsogolo mphamvu (kuchokera 65% mpaka 257% mpaka madigiri osiyanasiyana). Bowland ndi Naskar apempha chilolezo chopanga makina odzimva okha a carbon fiber.
"Zovala zothiridwa zimapereka njira yatsopano yopezerapo mwayi pazinthu zatsopano za nanomatadium zomwe zikupangidwa." Bowland adatero. Kafukufukuyu adathandizidwa ndi kafukufuku ndi ntchito zachitukuko zotsogozedwa ndi ORNL Laboratory, yofalitsidwa mu nyuzipepala ya ACS Applied Materials and Interfaces (Applied Materials & Interfaces) ya American Chemical Society.
Nthawi yotumiza: Dec-07-2018