(PU)Elastomer Polyurethane nke na-eguzogide ike ọgwụgwụ, okpomọkụ dị elu, na-agwọ onwe ya: Ejiri netwọk mgbanwe Covalent dị ike nke dabere na Ascorbic Acid mepụta ya.

Ndị nchọpụta emepụtala polyurethane elastomer ọhụrụ dabere na netwọk mgbanwe covalent dynamic covalent sitere na ascorbic acid (A-CCANs). Site n'iji mmetụta synergistic nke keto-enol tautomerism na njikọ carbamate dynamic, ihe ahụ na-enweta ihe pụrụ iche: okpomọkụ nkewa okpomọkụ nke 345 °C, nrụgide mgbawa nke 0.88 GPa, ike nrụgide nke 268.3 MPa (ntinye ike nke 68.93 MJ·m⁻³), na nrụgide fọdụrụ n'okpuru 0.02 mgbe okirikiri 20,000 gasịrị. Ọ na-egosipụtakwa ọgwụgwọ onwe ya n'ime sekọnd na arụmọrụ imegharị ihe ruo 90%, na-enye ngwọta ọhụrụ maka ngwa na ngwaọrụ smart na ihe owuwu.

Nnyocha ọhụrụ a wuru netwọk mgbanwe covalent (A-CCANs) nke na-eji ascorbic acid eme ihe dị ka ihe owuwu isi. Site na keto-enol tautomerism e mere nke ọma na njikọ carbamate na-agbanwe agbanwe, e mepụtara polyurethane elastomer pụrụ iche. Ihe a na-egosi iguzogide okpomọkụ dị ka polytetrafluoroethylene (PTFE) - yana okpomọkụ nkewa okpomọkụ dị elu ruo 345 °C - ebe ọ na-egosipụta nguzozi zuru oke nke ike na mgbanwe: nrụgide mgbawa nke 0.88 GPa, na ikike ịnọgide na-enwe nrụgide nke 268.3 MPa n'okpuru nrụgide 99.9% ebe ọ na-amịkọrọ ike 68.93 MJ·m⁻³. Ọbụna ihe dị egwu karị, ihe ahụ na-egosi nrụgide fọdụrụnụ nke na-erughị 0.02% mgbe usoro igwe 20,000 gasịrị, na-agwọ onwe ya n'ime otu sekọnd, ma nweta arụmọrụ imegharị ihe nke 90%. Atụmatụ nhazi a, nke na-emezu okwu a na-akpọ "inwe ma azụ ma aka bea," na-enye ngwọta dị iche iche maka ojiji dịka ihe eji eyi akwa mara mma na ihe eji eme ka ihe dị n'ime ikuku, ebe ike igwe na ịdịte aka gburugburu dị oke mkpa.