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Imbali yePolyurethane (PU) izinto kunye neemveliso
Yasekwa nguMnu. Wurtz kunye noMnu Hofmann ngo-1849, ephuhliswa ngo-1957, iPolyurethane yaba yinto esetyenziswa kumashishini amaninzi ahlukeneyo. Ukusuka kwi-spaceflight ukuya kwishishini kunye nezolimo. Ngenxa yokugqwesa kokuthambileyo, okunemibala, ukunwebeka okuphezulu, ukumelana ne-hydrolyze, ukubanda kunye nokutshisa ...Funda ngokugqithisileyo
