Cov khoom ntawm polymethyl methacrylate ua los ntawm blister tshuab
Tso lus
Qhov ceev ntawm PMMA yog qis dua cov iav: qhov ceev ntawm PMMA yog li 1.15-1.19 g/cm, uas yog ib nrab ntawm iav (2.40-2.80 g/cm) thiab 43 feem pua ntawm cov hlau txhuas (ib lub teeb hlau). Lub zog txhua yam ntawm PMMA yog qhov siab: qhov txheeb ze molecular loj ntawm PMMA yog li 2 lab, nws yog cov saw hlau ntev ntev, thiab cov saw hlau tsim cov molecule yog mos heev. Yog li ntawd, lub zog ntawm PMMA yog qhov siab, thiab lub peev xwm ntawm tensile thiab cuam tshuam kuj yog qhov siab. 7 ~ 18 npaug siab dua li iav zoo tib yam. Muaj ib hom plexiglass uas tau ua kom sov thiab ncab, nyob rau hauv uas cov ntu molecular tau teem rau hauv ib qho kev txiav txim zoo, yog li ntawd lub toughness ntawm cov khoom yog ho txhim kho. Lub plexiglass yog tsav nrog tus ntsia thawv, thiab txawm tias tus ntsia thawv nkag mus, nws yuav tsis tawg. Cov plexiglass zoo li no tseem tsis tau tawg ua tej daim tom qab tau nkag los ntawm ib lub mos txwv. Yog li ntawd, ncab-kho PMMA tuaj yeem siv los ua cov iav tsis muaj phom sij thiab tseem ua cov ntaub npog ntawm cov tub rog dav hlau.
