Wahi a ka hōʻike hou loa, hiki i ka hanauna hou o nā mea hui ke nānā i ko lākou kūlana olakino kino, a lilo i mea maʻamau.
He māmā a paʻa hoʻi nā mea hoʻohui o ka carbon fiber no nā kaʻa, nā mokulele a me nā ala ʻē aʻe. Aia lākou i nā substrates polymer, e like me ka epoxy resins, i hoʻopili ʻia me nā fila kalapona i hoʻoikaika ʻia. Ma muli o nā ʻano mechanical like ʻole o nā mea ʻelua, e hāʻule nā fibers mai ka substrate ma lalo o ke kaumaha nui a i ʻole ka luhi. ʻO ia ke ʻano o ka hūnā ʻia ʻana o ka pōʻino o ka ʻōnaehana carbon fiber composite ma lalo o ka ʻili a ʻaʻole hiki ke ʻike ʻia e ka maka ʻōlohelohe, hiki ke alakaʻi i ka pōʻino pōʻino.
"Ma ka hoʻomaopopo ʻana i ka loko o nā composites, hiki iā ʻoe ke noʻonoʻo maikaʻi i ko lākou olakino a ʻike inā aia kekahi pōʻino e pono e hoʻoponopono ʻia," ʻo Ridge Chris Bowland, kahi mea noiʻi ma ka
ʻO Oak Ridge National Laboratory ma ka US Department of Energy (Oak National Laboratory) Wigner. "I kēia mau lā, ua hoʻokumu ʻo Amit Naskar, ke poʻo o ka hui kalapona a me nā hui hui ma Bowland a me ORNL, i kahi ala ʻōwili e hoʻopili ai i nā fiber carbon conductive ma nā nanoparticles silicon carbide semiconductor. ʻO ka polymer, nā fibers e hana i ka uila, a hiki i nā composites nui ke hoʻopau i kēia conductivity uila ma lalo o ka hana o nā mana o waho, e hoʻohui i nā hana mechanical a me ka uila i nā composites ʻO ka kamepiula o ka mokulele e hōʻike i ka ʻēheu ma lalo o ke kaomi nui a hōʻike i kahi hoʻāʻo ʻO ka hōʻike ʻana i ka ʻōwili o ORNL e hōʻoia i ka manaʻo e hiki i ke ʻano ke hana i ka hanauna hou o nā pulu i uhi ʻia ma kahi nui i hoʻokomo ʻia i loko o nā nanoparticles, ua hoʻokomo ka poʻe noiʻi i nā spools carbon fiber kiʻekiʻe ma luna o nā wili, a ua hoʻonā nā wili i nā fibers i loko o nā resins epoxy, aia nā nanoparticles i loaʻa ma ka mākeke, ʻo ka laulā e pili ana i ka laulā o ka maʻi (45-65 nm).
Hoʻomaloʻo ʻia nā fibers i ka umu e hoʻopaʻa i ka uhi. I mea e ho'āʻo ai i ka ikaika o nā fibers i hoʻokomo ʻia i loko o nā nanoparticles i hoʻopili ʻia i ka substrate polymer, ua hana nā mea noiʻi i nā kaola i hoʻohui ʻia i ka fiber-reinforced composite beam, i hoʻonohonoho ʻia ma One Direction. I mea e aʻo ai i ka hiki ke ʻike o ka mea hoʻohuihui, ua hoʻokomo ʻo ia i nā electrodes ma nā ʻaoʻao ʻelua o ke kukui cantilever. I loko o kahi mīkini i kapa ʻia ʻo "Dynamic mechanical analyzer," ʻoki ʻo ia i kekahi ʻaoʻao e mālama i ka cantilever e paʻa. Hoʻoikaika ka mīkini i ka ʻaoʻao ʻē aʻe e kulou i ka lāʻau hoʻokuʻu ʻoiai ʻo Bowland e nānā i ka loli o ke kū'ē. Ua hana ʻo ORNL, kahi mea noiʻi postdoctoral Ngoc Nguyen, i nā hoʻokolohua hou i ka Fourier Transform Infrared spectrometer e aʻo ai i nā mea paʻa kemika i nā composites a hoʻomaikaʻi i ka ʻike o ka ikaika mechanical i ʻike ʻia. Ua hoʻāʻo pū nā mea noiʻi i ka hiki o ka ikehu dissipative o nā composites i hana ʻia i nā nui like ʻole o nā nanoparticles (ana ʻia e ka vibration damping behavior), e hoʻomaʻamaʻa i ka pane ʻana o nā mea hana i nā haʻalulu, nā haʻalulu a me nā kumu koʻikoʻi a me ke kaumaha. Ma kēlā me kēia manaʻo, hiki i nā nanoparticles ke hoʻonui i ka hoʻoheheʻe ʻana o ka ikehu (mai ka 65% a i ka 257% i nā degere like ʻole). Ua noi ʻo Bowland lāua ʻo Naskar i kahi patent kaʻina hana no ka hana ʻana i nā composite carbon fiber.
"ʻO nā uhi impregnated e hāʻawi i kahi ala hou e hoʻohana ai i nā nanomaterials hou e kūkulu ʻia nei. "wahi a Bowlland. Ua kākoʻo ʻia ke aʻo ʻana e nā noiʻi a me nā papahana hoʻomohala i kuhikuhi ʻia e ka ORNL Laboratory, i paʻi ʻia ma ka puke pai ACS Applied Materials and Interfaces (Applied Materials & Interfaces) o ka American Chemical Society.
Ka manawa hoʻouna: Dec-07-2018