Abacwaningi bathuthukise i-polyurethane elastomer entsha esekelwe kunethiwekhi ye-dynamic covalent adaptive etholakala ku-ascorbic acid (A-CCANs). Ngokusebenzisa umphumela wokubambisana we-keto-enol tautomerism kanye nezibopho ze-carbamate eziguquguqukayo, izinto zithola izakhiwo ezivelele: izinga lokushisa lokubola kokushisa elingu-345 °C, ukucindezeleka kokuphuka okungu-0.88 GPa, amandla okucindezela angu-268.3 MPa (ukumuncwa kwamandla angu-68.93 MJ·m⁻³), kanye nobunzima obusele obungaphansi kuka-0.02 ngemva kwemijikelezo engu-20,000. Iphinde ibonise ukuziphilisa ngemizuzwana kanye nokusebenza kahle kokuphinda kusetshenziswe okufika ku-90%, inikeza ikhambi eliphumelelayo lokusetshenziswa kumadivayisi ahlakaniphile nezinto zokwakha.
Lolu cwaningo oluqavile lwakha inethiwekhi eguquguqukayo ye-covalent adaptive (A-CCANs) esebenzisa i-ascorbic acid njengesisekelo sokwakha. Ngokusebenzisa i-keto-enol tautomerism eklanywe kahle kanye nezibopho ze-carbamate eziguquguqukayo, kwadalwa i-polyurethane elastomer engavamile. Izinto ezibonakalayo zibonisa ukumelana nokushisa okufana ne-polytetrafluoroethylene (PTFE)—ngokushisa kokubola kokushisa okuphezulu njengo-345 °C—ngenkathi zibonisa ibhalansi ephelele yokuqina nokuguquguquka: ukucindezeleka kwangempela kokuqhekeka okungu-0.88 GPa, kanye nekhono lokugcina ukucindezeleka okungu-268.3 MPa ngaphansi kokucindezeleka kokucindezela okungu-99.9% ngenkathi kudonswa amandla angu-68.93 MJ·m⁻³. Okuhlaba umxhwele nakakhulu, izinto ezibonakalayo zibonisa ukucindezeleka okusele okungaphansi kuka-0.02% ngemva kwemijikelezo engu-20,000 yemishini, eziphulukisa ngomzuzwana owodwa, futhi zithola ukusebenza kahle kokuphinda kusetshenziswe okungu-90%. Leli cebo lokuklama, elifeza isaga esithi “ukuba nezinyawo zenhlanzi nezebhere,” linikeza ikhambi elishintshayo lezinhlelo zokusebenza ezifana nezinto ezigqokwayo ezihlakaniphile kanye nezinto zokubeka izimpahla ezindizayo, lapho kokubili amandla omshini kanye nokuqina kwemvelo kubalulekile khona.
Isikhathi sokuthunyelwe: Agasti-28-2025