matabwa oonekera

Kugwiritsa ntchito nkhuni zowonekera pomanga ndi machitidwe amagetsi

Wood ndi chomangira champhamvu komanso chosunthika, koma monga chilichonse chili ndi zovuta zake (zimawola pakapita nthawi, zimawola ndi nsikidzi ndikutsekereza kutuluka kwa kuwala).

Wamba magalasi mbale si bwino kwambiri. Amatulutsa kuwala mosavuta ndipo amalola mphamvu zambiri kulowa kapena kutuluka mnyumbamo. Akatswiri apeza zabwino koposa zonse: matabwa owonekera.

Asayansi Liangbing Hu, Dr. Mingwei Zhu ndi anzawo ochokera ku yunivesite ya Maryland adatha kupanga chipika cha matabwa kuti chiwoneke bwino, motero adapeza zinthu zomwe zingagwiritsidwe ntchito pomanga ndi zamagetsi pogwiritsa ntchito kuwala.

Asayansi achotsa mumatabwa molekyu yomwe imapangitsa kuti ikhale yolimba komanso yakuda, ndikupeza maselo opanda mtundu a cellulose odzaza ndi epoxy resin, motero amapanga matabwa omwe nthawi zambiri amawonekera.
 
 matabwa oonekera
 
matabwa oonekera

 

 

"Izi zitha kugwiritsidwa ntchito m'magalimoto chifukwa matabwawo ndi owoneka bwino komanso amphamvu kwambiri," adatero Dr. Zhu, wolemba woyamba wa phunziroli. "Mutha kugwiritsanso ntchito ngati chomangira chapadera."

Pochotsa utoto ndi mankhwala, nkhunizo zinakhala zowonekera, koma zimakhalanso zamphamvu komanso zotetezera bwino kuposa galasi, ndipo zimakhala ndi mphamvu zowonongeka bwino kuposa pulasitiki.

Njira yomwe idapangitsa kuti matabwawo aziwoneka bwino, idayamba ndikuiwiritsa m'madzi osakanikirana ndi sodium hydroxide ndi mankhwala ena kwa maola awiri. Izi zinatulutsa lignin, molekyu yomwe imapatsa nkhuni mtundu wake, kuchokera mumtengo. Pambuyo pake, adathira utomoni wa epoxy pamtengowo, womwe umapangitsa kuti ukhale wolimba kuwirikiza kanayi kapena kasanu.

Chimodzi mwazinthu zosangalatsa za nkhuni "zatsopano" ndikuti zimasunga mawonekedwe ndi njira zachilengedwe zomwe zidapangidwa pomwe zinali "zenizeni" nkhuni. Ma microchannel awa amatha kuyatsa ngati momwe amapangira zakudya ngati gawo la mbewu. "M'zinthu zachikhalidwe, kuwala kumabalalika," akutero Hu. "Mukapeza zotsatira mu nkhuni, kuwala kowonjezereka kudzalowa m'nyumba mwanu."

M’magawo otsatirawa a kafukufuku, asayansi adzayesa kupanga njira imene ingawathandize kukulitsa luso limeneli, kotero kuti athe kupanga matabwa akuluakulu oonekera bwino omwe adzagwiritsidwe ntchito pazinthu zosiyanasiyana kuyambira kupanga mazenera, zipangizo zomangira ndi mipando. , mpaka kuzinthu zing'onozing'ono monga zida za precision optics zomwe nthawi zambiri zimapangidwa ndi galasi kapena pulasitiki.

Zochokera: phys.org, youtube.com

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