Qhov sib txawv tseem ceeb ntawm vinyl ester thiab polyester resin yog cov yas ester resins muaj cov viscosity tsawg, hos polyester resin muaj cov viscosity siab.
Muaj ntau daim ntawv thov tseem ceeb ntawm vinyl ester resins thiab polyester resins. Vinyl ester resin yog siv los ua tus thawj coj los tsim cov chav kawm loj ntawm cov resins, kho cov ntaub ntawv, thiab laminating vim cov khoom tsis muaj dej, thiab siv hauv tsev dav hlau, thiab lwm yam thaum polyester resin tuaj yeem siv rau cov panels uas yog fabricated polyester resins thiab ntxiv dag zog. nrog fiberglass rau tsev noj mov, chav ua noj, chav dej, thiab lwm qhov chaw uas yuav tsum tau ntxuav cov phab ntsa uas tsis tshua muaj kev tu.
Vimyl Ester Resin yog dab tsi?
Viny ester resin yog ib hom resin uas tau npaj los ntawm esterification ntawm epoxy resin nyob rau hauv lub xub ntiag ntawm acrylic los yog methacrylic acids. Hauv cov qauv no, peb hu ua "vinyl" pawg ua cov ester hloov pauv uas nquag ua rau polymerization. Yog li ntawd, ib qho inhibitor feem ntau yog siv thaum npaj cov khoom siv cob. Tom qab ntawd, peb tuaj yeem yaj cov khoom diester hauv cov kuab tshuaj reactive (xws li styrene) los pib polymerization los ntawm cov dawb radical tsim tsim nyob rau hauv lub xub ntiag ntawm UV hluav taws xob los yog peroxides.
Daim duab 01: Ib Hom Vinyl Ester Resin Structure
Viny ester resin yog cov khoom siv thermosetting. Peb tuaj yeem siv nws ua lwm txoj hauv kev rau polyesters thiab epoxy cov ntaub ntawv. Ntawm no, peb tuaj yeem siv cov khoom siv no ua cov thermoset polymer matrix hauv cov ntaub ntawv sib xyaw. Hauv kev sib xyaw ua ke no, qhov ua tau zoo thiab kev siv nyiaj ntau yog qhov tseem ceeb. Cov khoom no feem ntau yog nruab nrab ntawm cov ntaub ntawv polyester thiab epoxy. Tsis tas li ntawd, cov resin viscosity ntawm vinyl ester resin yog qis dua li ntawm polyester thiab epoxy.
Muaj ntau daim ntawv thov ntawm vinyl ester resins, suav nrog kev siv ua ntej los tsim cov chav kawm loj ntawm cov resins, hauv kev kho cov ntaub ntawv thiab laminating vim cov khoom tsis muaj dej, hauv cov dav hlau hauv tsev, thiab lwm yam.
Polyester Resin yog dab tsi?
Polyester resin yog hom resin tsim los ntawm cov tshuaj tiv thaiv ntawm dibasic organic acids thiab polyhydric alcohols. Nws yog ib hom hluavtaws cob. Feem ntau, maleic anhydride muaj txiaj ntsig zoo li cov khoom siv raw nyob rau hauv lub xub ntiag ntawm dibasic functionality ntawm unsaturated polyester resins.
Daim duab 02: Isomerization ntawm Maleate thiab Fumarate rau daim ntawv Polyester Resin
Muaj polyester resins uas tsis saturated. Cov no muaj txiaj ntsig zoo hauv cov ntawv molding compounds, bulk molding compounds, thiab toner ntawm laser printers. Ntxiv mus, peb tuaj yeem siv cov panels uas yog fabricated nrog polyester resins thiab ntxiv fiberglass rau cov khw noj mov, chav ua noj, chav dej, thiab lwm qhov chaw uas yuav tsum tau ntxuav cov phab ntsa uas tsis tshua muaj kev tu. Tsis tas li ntawd, cov khoom siv no muaj txiaj ntsig zoo hauv kev siv cov yeeb nkab kho tau zoo.
Thaum xav txog cov qauv tshuaj ntawm polyester resins, cov no yog ib pawg ntawm cov polymers uas cov ester functional pawg rov ua dua hauv cov saw tseem ceeb. Tsis tas li ntawd, polyesters yog cov txheej txheem loj hlob polymers. Nyob rau hauv cov txheej txheem polymerization ntawm kev npaj polyester resins, difunctional acid los yog acyl halide reacts nrog difunctional cawv.
Qhov txawv ntawm Vinyl Ester thiab Polyester Resin yog dab tsi?
Vinyl ester resin thiab polyester resin yog ib qho tseem ceeb polymers. Peb tuaj yeem siv cov ntaub ntawv sib hloov pauv vim lawv qhia qee cov cim zoo sib xws hauv lawv daim ntawv thov. Qhov sib txawv tseem ceeb ntawm vinyl ester thiab polyester resin yog cov yas ester resins muaj cov viscosity tsawg, hos polyester resin muaj cov viscosity siab.
Cov hauv qab no qhia txog qhov sib txawv ntawm cov yas ester thiab polyester resin hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Vinyl Ester vs Polyester Resin
Viny ester resin yog ib hom resin uas tau npaj los ntawm esterification ntawm epoxy resin nyob rau hauv lub xub ntiag ntawm acrylic los yog methacrylic acids. Polyester resin yog ib hom resin uas tsim los ntawm cov tshuaj tiv thaiv ntawm dibasic organic acids thiab polyhydric alcohols. Qhov sib txawv tseem ceeb ntawm vinyl ester thiab polyester resin yog cov yas ester resin muaj cov viscosity tsawg, hos polyester resin muaj cov viscosity siab.
