ib leeg xov xwm

Dab tsi yog qhovUses thiab Properties ntawmPolystyreneDaim iav

Polystyrene (PS) yog cov khoom siv hluav taws xob ua los ntawm styrene monomer, uas yog ib qho ntshiab, amorphous, nonpolar cov khoom siv thermoplastic uas yooj yim rau kev ua thiab uas tuaj yeem hloov tau yooj yim rau hauv ntau cov khoom lag luam semi-tiav xws li foams, films, thiab nplooj ntawv. .Nws yog ib qho ntawm cov khoom ntim loj tshaj plaws, suav nrog kwv yees li xya feem pua ​​​​ntawm tag nrho cov khoom siv thermoplastic.

PS yog cov khoom siv hluav taws xob zoo heev, muaj qhov pom kev pom zoo heev vim tsis muaj crystallinity, thiab muaj cov tshuaj tiv thaiv zoo rau cov kua qaub thiab cov hauv paus.Txawm li cas los xij, polystyrene muaj ntau yam kev txwv.Nws raug tawm tsam los ntawm cov kuab tshuaj hydrocarbon, muaj cov pa oxygen tsis zoo thiab UV tsis kam, thiab yog qhov nkig, piv txwv li, nws muaj kev cuam tshuam tsis zoo vim qhov txhav ntawm cov pob txha polymer.Tsis tas li ntawd, nws qhov ntsuas kub siab tshaj plaws rau kev siv txuas ntxiv yog qhov tsawg vim qhov tsis muaj crystallinity thiab nws qhov kub hloov pauv ntawm iav tsis tshua muaj txog 100 ° C.Hauv qab nws Tg, nws muaj qhov nruab nrab rau siab tensile zog (35 - 55 MPa) tab sis tsis tshua muaj zog (15 - 20 J / m).Txawm hais tias tag nrho cov kev tsis muaj zog no, styrene polymers yog cov khoom lag luam loj loj txaus nyiam heev.

Cov ntawv polystyrene feem ntau yog nyias thiab nkig ntau dua li cov ntawv acrylic tab sis feem ntau raug nqi tsawg dua li lwm cov yas.Nws muaj qhov pom tseeb siab (thib ob rau cov ntawv acrylic hauv lub teeb xa hluav taws xob), Nws qhov cuam tshuam tsis zoo, huab cua tsis kam thiab kev laus ua haujlwm tsis zoo dua li plexiglass, cov khoom siv hluav taws xob thiab thermal ua haujlwm tsis zoo li plexiglass, hardness zoo ib yam li plexiglass acrylic, dej. Kev nqus thiab thermal expansion coefficient tsawg dua plexiglass acrylic, tab sis nws tus nqi qis dua plexiglass acrylic.

Polystyrene yog cov khoom xaiv rau ntau daim ntawv thov suav nrog cov khoom ntim khoom noj, cov khoom siv yas pov tseg thiab cov khoom siv kho qhov muag, hluav taws xob / hluav taws xob, thiab kev siv kho mob.