Qhov sib txawv tseem ceeb ntawm Lexan thiab Plexiglass yog tias Lexan muaj zog dua cov khoom siv Plexiglass.
Ob leeg Lexan thiab Plexiglass tuaj yeem siv los ua lwm yam rau iav vim lawv cov yam ntxwv zoo sib xws. Txawm li cas los xij, lawv muaj lub zog sib txawv; yog li, lawv tau siv ntau yam kev siv. Lexan yog polycarbonate resin uas peb tuaj yeem siv rau hauv qhov chaw iav thaum Plexiglass yog lub npe lag luam rau polymethyl methacrylate.
Lexan yog dab tsi?
Lexan yog polycarbonate resin thiab cov khoom tseem ceeb polymer uas peb tuaj yeem siv los hloov iav. Nws yog cov khoom siv thermoplastic uas muaj zog heev, pob tshab, tiv taus kub, thiab peb tuaj yeem tsim tau yooj yim. Qhov no yog vim li cas peb feem ntau siv cov khoom no los ua lwm txoj rau iav.
Lexan cov ntaub ntawv muaj nyob rau hauv kev lag luam hauv daim ntawv cov ntaub ntawv, hauv daim ntawv ntawm cov yeeb yaj kiab nyias, thiab kuj yog ib qho tsis muaj ntaub ntawv. Cov khoom no feem ntau tiv taus kub kub thiab kub qis heev (txog li 40 degrees Celsius). Thiab, cov cuab yeej no ua rau nws muaj txiaj ntsig zoo rau cov khoom siv hauv chav ua noj thiab cov khoom siv hluav taws xob. Ntxiv mus, Lexan muaj kev cuam tshuam loj heev, uas ua rau nws muaj txiaj ntsig zoo hauv iav kev nyab xeeb thiab kev siv nws pib lossis kev siv dav hlau. Tsis tas li ntawd, cov khoom no tuaj yeem xa lub teeb sib piv rau cov iav dawb.
Daim duab 01: A Lexan Lub Cev
Tsis tas li ntawd, Lexan tuaj yeem lees paub tias yog cov khoom amorphous uas tsis muaj cov qauv crystalline (feem ntau cov khib nyiab muaj cov khoom siv crystalline). Thaum piv rau lwm cov ntaub ntawv polymer zoo xws li Plexiglass, Lexan muaj zog dua thiab kim. Ntxiv mus, nws tuaj yeem raug khoov dua li qhov tawg thaum lub siab sab nraud siv rau nws.
Plexiglass yog dab tsi?
Plexiglass yog lub npe lag luam rau polymethyl methacrylate, uas yog ib qho tseem ceeb ntawm cov khoom siv polymer. Lub npe IUPAC ntawm cov polymer no yog Poly (methyl 2-methyl propanoate), thiab cov tshuaj formula ntawm lub rov ua dua ntawm cov polymer yog (C5O2H8) n. Txawm hais tias muaj cov tshuaj formula rau cov khoom no, cov molar loj txawv nyob ntawm tus nqi ntawm "n". Qhov ceev ntawm cov khoom no yog 1.18 g / cm3, thiab lub melting point yog 160 ° C. Muaj peb txoj hauv kev loj ntawm kev sib txuas cov polymer no: emulsion polymerization, kua polymerization thiab bulk polymerization.
Daim duab 02: Plexiglass
Lub npe lag luam ntawm polymethyl methacrylate yog Lucite. Txawm li cas los xij, muaj qee lub npe lag luam zoo xws li Crylux, Plexiglass, Acrylite, thiab Perspex. Cov khoom no yog pob tshab thermoplastic polymer, thiab nws yog ib qho tseem ceeb raws li ib qho kev xaiv rau iav hauv nws daim ntawv. Tsis tas li ntawd, Plexiglass muaj txiaj ntsig zoo li cov cam khwb cia hauv cov inks thiab coatings.
Ntxiv mus, cov polymer no muaj zog, tawv thiab muaj lub teeb yuag. Qhov ntom ntawm cov polymer no tsawg dua li ib nrab ntawm qhov ntom ntawm iav. Txawm li cas los xij, nws muaj kev cuam tshuam ntau dua li iav thiab polystyrene. Tsis tas li ntawd, cov polymer no tuaj yeem xa mus ib puag ncig 92% ntawm cov teeb pom kev zoo, yog li nws tuaj yeem lim UV teeb uas muaj lub wavelength hauv qab 300 nm.
Qhov txawv ntawm Lexan thiab Plexiglass yog dab tsi?
Lexan thiab Plexiglass yog cov khoom siv polymer uas peb tuaj yeem siv los ua lwm yam iav vim lawv cov qauv zoo sib xws. Qhov sib txawv tseem ceeb ntawm Lexan thiab Plexiglass yog tias Lexan muaj zog dua cov khoom siv Plexiglass. Ntxiv mus, Lexan muaj polycarbonate resin thaum Plexiglass muaj polymethyl methacrylate. Ntxiv rau cov no, Plexiglass yog qhov sib piv qis dua li Lexan.
Cov ntaub ntawv hauv qab no-daim duab tabulates ib sab ntawm qhov sib txawv ntawm Lexan thiab Plexiglass.
Summary – Lexan vs Plexiglass
Lexan thiab Plexiglass yog cov ntaub ntawv polymer uas peb tuaj yeem siv los ua lwm cov ntaub ntawv rau iav vim lawv cov qauv zoo sib xws. Qhov sib txawv tseem ceeb ntawm Lexan thiab Plexiglass yog tias Lexan muaj zog dua cov khoom siv Plexiglass. Ntxiv mus, Lexan yog kim dua piv rau Plexiglass.
