Polycarbonate (PC) yog cov roj carbonic acid. Carbonic acid nws tsis ruaj khov, tab sis nws cov derivatives (xws li phosgene, urea, carbonate, carbonate) muaj qee yam kev ruaj ntseg. Lub polycarbonate tau muab cais ua ob hom, aliphatic thiab aromatic, nyob ntawm seb tus qauv ntawm cawv. Aliphatic polycarbonate. Xws li polyethylene carbonate, polytrimethylene carbonate thiab nws cov tshuab copolymer, tsis tshua muaj melting point thiab iav hloov kub, tsis muaj zog, tsis tuaj yeem siv ua khoom siv; tab sis nrog nws cov biocompatibility thiab biodegradable zog, Nws tau raug tso rau hauv cov tshuaj tso tshuaj tso tsheb, phais cov khoom siv, thiab cov khoom siv pob txha. Polycarbonate tiv taus cov qaug zog cov qaub, tsis muaj zog hauv paus thiab roj nruab nrab. Polycarbonate tsis tiv taus UV teeb thiab tsis tuaj yeem ua rau alkali muaj zog.
PC yog ib qho linear carbonic acid polyester nyob rau hauv pawg carbonic acid pawg yog alternately teem nrog lwm pab pawg. Cov pab pawg no yuav muaj ntxhiab, aliphatic los yog ob qho tib si. Bisphenol Ib hom PC yog qhov khoom tseem ceeb tshaj plaws. PC yog ib qho xim yuav luag tsis muaj xim amorphous polymer nrog kho qhov muag zoo. PC siab loj molecular resin muaj high toughness, cantilever beam notched feem zog yog 600 ~ 900J / m, qib grade muaj kub kub qhov kub txog 130 ° C, thiab iav fiber reinforced yuav ua rau kom qhov tus nqi yog 10 ° C. Lub flexural modulus ntawm lub PC yuav ncav cuag ntau dua 2400 MPa, thiab cov pob txha yuav ua tiav rau hauv cov khoom loj. Hauv qab 100 ° C, tus nqi txhim kho hauv qab yog qhov tsawg kawg nkaus. PC yog ploj hauv kev tiv thaiv hydrolysis thiab tsis tuaj yeem raug siv dua qub cov txheej txheem cov khoom raug siab.
Qhov kev ua haujlwm tseem ceeb ntawm PC yog tias qhov kev ua haujlwm tsis ua haujlwm tsis txaus yog tsis txaus siab, nws yog tus cwj pwm tsis sib thooj, tiv cov tshuaj organic, thiab muaj qhov tsis zoo. Nws yuav daj thaum raug ultraviolet teeb rau ib lub sijhawm ntev. Ib yam li lwm cov resins, PCs raug cov kab mob tua tau los ntawm cov organic solvents. Cov ntaub ntawv hauv PC yog nplaim taws tawv thiab hnav tsis taus. Antioxidant.
