Abaphandi baphuhlise i-polyurethane elastomer entsha esekelwe kwi-ascorbic acid-derived dynamic covalent adaptive network (A-CCANs). Ngokusebenzisa isiphumo se-synergistic se-keto-enol tautomerism kunye ne-dynamic carbamate bonds, le nto ifumana iipropati ezibalaseleyo: ubushushu bokubola kobushushu obuyi-345 °C, uxinzelelo lokuqhekeka oluyi-0.88 GPa, amandla okuxinzelela angama-268.3 MPa (ukufunxwa kwamandla angama-68.93 MJ·m⁻³), kunye noxinzelelo olushiyekileyo olungaphantsi kwe-0.02 emva kwemijikelo engama-20,000. Ikwabonisa ukuziphilisa ngaphakathi kwemizuzwana kunye nokusebenza ngokurisayikilisha okuya kuthi ga kwi-90%, inikezela ngesisombululo esiphumelelayo kwizicelo kwizixhobo ezikrelekrele kunye nezixhobo zokwakha.
Olu phononongo oluphambili lwakha inethiwekhi eguquguqukayo ye-covalent adaptive (A-CCANs) kusetyenziswa i-ascorbic acid njengesiseko sokwakha. Ngokusebenzisa i-keto-enol tautomerism eyilwe ngokuchanekileyo kunye neebhondi ze-carbamate eziguquguqukayo, kwadalwa i-polyurethane elastomer engaqhelekanga. Ezi zinto zibonisa ukumelana nobushushu obufana ne-polytetrafluoroethylene (PTFE)—enobushushu bokubola kobushushu obufikelela kwi-345 °C—ngexesha zibonisa ulungelelwaniso olugqibeleleyo lokuqina kunye nokuguquguquka: uxinzelelo lokwenyani lokuqhekeka kwe-0.88 GPa, kunye nokukwazi ukugcina uxinzelelo lwe-268.3 MPa phantsi kwe-99.9% yoxinzelelo ngelixa ifunxa amandla angama-68.93 MJ·m⁻³. Okumangalisa ngakumbi kukuba, ezi zinto zibonisa uxinzelelo olushiyekileyo olungaphantsi kwe-0.02% emva kwemijikelo engama-20,000 yoomatshini, ziyaziphilisa ngaphakathi komzuzwana omnye, kwaye zifezekisa ukusebenza kakuhle kokuphinda zisetyenziswe kwe-90%. Le ndlela yoyilo, efezekisa isaci esithi “ukuba neenyawo zentlanzi nezebhere,” ibonelela ngesisombululo esitshintshayo kwizicelo ezifana nezinto ezinxitywayo ezikrelekrele kunye nezinto zokukhusela inqwelo-moya, apho amandla oomatshini kunye nokuqina kwendalo kubaluleke kakhulu.
Ixesha lokuthumela: Agasti-28-2025