PVB (Polyvinyl Butyral) thiab EVA (Ethylene Vinyl Acetate) yog ob hom ntaub ntawv interlayer siv hauv cov iav laminated, tab sis lawv muaj cov khoom sib txawv thiab kev siv. Nov yog qhov sib txawv tseem ceeb ntawm PVB thiab EVA:
-Cov khoom xyaw: PVB yog cov thermoplastic resin ua los ntawm polyvinyl cawv thiab butyraldehyde, thaum EVA yog copolymer ua los ntawm ethylene thiab vinyl acetate.
-Transparency: PVB muaj qhov zoo tshaj plaws optical clarity thiab pob tshab, ua rau nws yog ib qho kev xaiv nrov rau cov ntawv thov uas pom qhov tseem ceeb, xws li cov khoom siv tsheb. EVA, ntawm qhov tod tes, nyhav me ntsis qis dua ntawm pob tshab, thiab nws tuaj yeem muaj xim daj me ntsis.
-Adhesion: PVB muaj cov khoom zoo adhesion, tso cai rau nws sib raug zoo nrog iav. Nws tsim ib daim ntawv cog lus muaj zog, ruaj khov, ua rau nws tsim nyog rau kev nyab xeeb daim ntaub ntawv uas lub iav yuav tsum nyob twj ywm txawm tias tawg. EVA kuj muaj cov khoom zoo adhesion, tab sis nws feem ntau muab kev ruaj khov rau lwm cov ntaub ntawv xws li yas lossis hlau.
-Sound thiab UV nqus: PVB muaj lub suab zoo dua li EVA, ua kom muaj txiaj ntsig zoo ntawm kev txo cov suab nrov. PVB kuj tseem muab qhov zoo dua UV (ultraviolet) nqus hluav taws xob, muab kev tiv thaiv zoo tiv thaiv fading thiab kev puas tsuaj los ntawm lub hnub rays. EVA muaj qee cov khoom thaiv UV tab sis feem ntau tsis zoo dua li PVB hauv qhov no.
-Kev Ua Haujlwm: EVA muaj qhov ua haujlwm qis dua piv rau PVB, uas ua rau nws yooj yim rau kev ua haujlwm nrog rau qee yam kev siv. Nws tuaj yeem ua tiav siv cov cua sov thiab lub siab, tso cai rau ntau yam kev xaiv xaiv xws li cov khoom ntim khoom lossis cov khoom siv kho kom zoo nkauj hauv cov iav laminated. PVB xav tau qhov kub thiab txias dua rau kev ua haujlwm thiab feem ntau yog siv rau hauv daim ntawv thov laminated iav.
-Daim ntawv thov: PVB yog dav siv nyob rau hauv automotive windshields, architectural iav, thiab lwm yam kev ruaj ntseg iav daim ntaub ntawv. Nws muaj nuj nqis rau nws cov khoom kho qhov muag zoo heev, cuam tshuam tsis kam, thiab muaj peev xwm tuav cov iav tawg ua ke thaum tawg. EVA feem ntau yog siv rau hauv cov ntawv thov uas ua rau cov khoom siv tsis yog iav, xws li encapsulating solar cells, tsim cov iav zoo nkauj, lossis laminating yas lossis hlau los xij.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias kev xaiv ntawm PVB thiab EVA yog nyob ntawm cov kev cai tshwj xeeb ntawm daim ntawv thov, thiab ob qho tib si cov ntaub ntawv muaj lawv qhov zoo thiab kev siv tsim nyog hauv thaj tsam ntawm cov iav laminated.
