Polycarbonate (PC) yog cov chav kawm polyester ntawm carbonic acid, carbonic acid nws tus kheej tsis ruaj khov, tab sis nws cov derivatives (xws li phosgene, urea, carbonate, carbonate) muaj qhov ruaj khov.

Raws li cov qauv cawv sib txawv, polycarbonate tuaj yeem muab faib ua ob pawg ntawm aliphatic thiab aromatic.

Aliphatic polycarbonate. Xws li polyethylene-carbonate, polytrimethylene carbonate thiab nws cov copolymer, tsis tshua muaj melting point thiab iav hloov kub, tsis muaj zog, tsis tuaj yeem siv los ua cov khoom siv; tab sis kev siv nws cov biocompatibility thiab biodegradable zog, yuav siv tau nyob rau hauv cov tshuaj qeeb tso cov cab kuj, phais sutures, pob txha cov ntaub ntawv thiab lwm yam kev siv.

Polycarbonate tiv taus cov acids tsis muaj zog, tsis muaj zog hauv paus, thiab cov roj nruab nrab.

Polycarbonate tsis tiv taus ultraviolet lub teeb thiab muaj zog alkalis.

PC yog ib tug linear carbonate polyester nrog alternating carbonic acid pawg nyob rau hauv lub molecule nrog ib co lwm pab pawg neeg uas yuav ua tau aromatic, aliphatic, los yog ob qho tib si. Bisphenol A hom PC yog cov khoom lag luam tseem ceeb tshaj plaws.

PC yog ib qho yuav luag tsis muaj xim iav amorphous polymer nrog cov khoom siv kho qhov muag zoo. PC siab molecular hnyav resin muaj siab toughness, cantilever beam notched cuam tshuam lub zog ntawm 600 ~ 900J / m, unfilled qib kub deflection kub ntawm txog 130 ° C, iav fiber reinforced yuav ua rau tus nqi no nce los ntawm 10 ° C. PC dabtsi yog khoov modulus tuaj yeem ncav cuag ntau dua 2400MPa, cov resin tuaj yeem ua tiav rau hauv cov khoom lag luam loj. Lub creep tus nqi nyob rau hauv load yog tsawg heev hauv qab 100 ° C. PC tsis zoo tiv thaiv hydrolysis thiab tsis tuaj yeem siv rau cov khoom uas pheej rov ua rau lub zog siab.

Qhov kev ua haujlwm tseem ceeb ntawm PC yog nws tsis muaj hydrolytic stability, rhiab heev rau chipping, tsis kam mus rau cov organic chemicals, tsis zoo khawb tsis kam, thiab yellowing los ntawm lub sij hawm ntev raug rau UV teeb. Zoo ib yam li lwm cov resins, PC muaj kev cuam tshuam rau kev yaig los ntawm qee cov kuab tshuaj organic.

Cov khoom siv PC yog nplaim hluav taws. Resistant rau oxidation.