Musi waGumiguru 15, vanotsvaga kuCalmers University yeTechnology muSweden vakabudirira kugadzira rudzi rutsva rwegirazi rekushandisa rinosanganisira mushonga, Advital Chigray Screens tekinoroji. Chidzidzo icho chakaratidza kuti kusanganisa mamalekyu akawanda (kusvika masere panguva) kunogona kuburitsa zvinhu zvinoita seakanaka segirazi rinozivikanwa parizvino.
Girazi, rinozivikanwawo se "Amorphous solid", chinhu chimwe chinhu pasina chimiro chakareba-chakarairwa-hachina kuumba makristasi. Kune rimwe divi, zvinyorwa zvemichero zvinogadzirwa zvine chekuita nekudzokorora maitiro ekudzokorora.
Izvo zvinyorwa zvatinowanzo fonera "girazi" muhupenyu hwezuva nezuva hwakanyanya kubva paSilica, asi girazi rinogona kugadzirwa nezvakawanda zvakasiyana. Naizvozvo, vatsvagiri vanogara vachifarira kuwana nzira nyowani dzekukurudzira zvinhu zvakasiyana kuumba iyi amorphous state, iyo inogona kutungamira mukuvandudzwa kwemagirazi matsva nedziviriro dzavandudzika uye zvishandiso zvitsva. Tsvagurudzo nyowani ichangobudiswa munguva pfupi yapa resainzi "Science inofambira mberi" inomiririra nhanho yakakosha yekutsvaga.
Zvino, nekungosanganisa mauto mazhinji akasiyana, isu takangoerekana vhura mukana wekugadzira zvinhu zvitsva uye zviri nani zvegirazi. Vaya vanodzidza mondekisi mauto anoziva kuti kushandisa musanganiswa wemamorekuru maviri kana matatu akasiyana anogona kubatsira kugadzira girazi, asi vashoma vanogona kutarisira kuti vanowedzera mhandara yakanaka kwazvo, "timu yekutsvagisa yakatungamira kutsvakwa. Muzvinafundo Christian Müller kubva kuDhipatimendi reMemista uye Chemical Engineering yeUlms University.
Mhedzisiro yakanakisa ye chero girazi kugadzira zvinyorwa
Kana iyo mvura inotonhorera isina crystallization, girazi rinoumbwa, maitiro anonzi vitrization. Iko kushandiswa kwemusanganiswa weaviri kana matatu mamorekuru ekukurudzira kuumbwa kwegirazi fungidziro yakakura. Nekudaro, mhedzisiro yekusanganisa huwandu hukuru hwemamorekuru pakukwanisa kuumba girazi ratambira zvishoma.
Vatsvagiri vakaedza musanganiswa wevakawanda sere sere sere mamalekyudhi mamalekyukisi, ayo ega ane yakakwirira brittleness-hunhu uhwu hune hukama nehuremu hwacho hunogadzira girazi. Asi kusanganisa manyorerwo mazhinji pamwe chete kunounza kuderedzwa kwakakura muBrittleness uye kuumba girazi rakasimba kwazvo raimbova neltra-low brittle.
"Bhurawuti yegirazi yatakagadzira mukutsvagisa kwedu yakaderera kwazvo, iyo inomiririra yakanakisa girazi-kugadzira kugona. Isu takayera kwete chero zvinhu zveganda chete asiwo polymers uye inormac zvinhu (senge bullk simbi). Mhedzisiro yacho iri nani pane yakajairika girazi. Girazi rekugadzira kugona kwegirazi imwe yegirazi remagirazi rakanakisa ratinoziva, "akadaro Sandra Hultmark, mudzidzi wekutarisira muDhipatimendi reChemistry uye nemakemikari engineering uye mutungamiri wemutungamiriri wechidzidzo.
Wedzera hupenyu hwechigadzirwa uye chengetedza zviwanikwa
Zvinoshandiswa zvakakosha zvegirazi rakagadzikana organic dziri kuratidza matekinoroji akadai seyakawona screens uye yekuvandudza simba rezvematongerwo enyika senge organic maseru emasokisi.
"Mukombi unoumbwa negirazi dzemahara dzechiedza-inoburitsa mamorekuru. Kana vakagadzikana, zvinogona kuwedzera kusimba kweiyo oled uye pakupedzisira kusimba kwechiratidziro, "akatsanangura Sandra Hultmark.
Imwe application inogona kubatsirwa negirazi yakawandisa mishonga. Amorphous zvinodhaka zvinopera nekukurumidza, izvo zvinobatsira kukurumidza kutora chinoshanda chinoshanda kana chakamiswa. Naizvozvo, zvinodhaka zvakawanda zvinoshandisa magirazi-ekugadzira mafomu ezvinodhaka. Kune zvinodhaka, zvakakosha kuti zvinyorwa zvevachirisa hazvicheme pamusoro pekufamba kwenguva. Iyo yakawanda yakagadziriswa iyo girazi zvinodhaka, zvakareba hupenyu hwesherufu hwemushonga.
"Nezvakawanda zvakagadzikana girazi kana matsva egirazi kugadzira zvinhu, tinogona kuwedzera hupenyu hwebasa hwehuwandu hukuru hwezvigadzirwa, nekudaro kuponesa zviwanikwa uye hupfumi," Christian müller akadaro.
"Vitrization yeXinyuanperyley musanganiswa ne Ultra-Low brittleness" yakaburitswa mujeri resainzi "Science inofambira".
Kutumira Nguva: Dec-06-2021