Qhov sib txawv tseem ceeb ntawm PVC thiab PTMT yog PVC yog tsim los ntawm cov dawb radical polymerization, whereas PTMT yog tsim los ntawm condensation polymerization.
PVC thiab PTMT yog cov khoom siv polymer. Cov ntaub ntawv no muaj cov khoom sib txawv, cov qauv tshuaj, thiab kev siv sib txawv. Piv txwv li, PVC muaj cov qauv tsis muaj ntxhiab, thaum PTMT muaj cov qauv uas muaj ntxhiab.
YPVC yog dab tsi?
PVC yog lo lus rau polyvinyl chloride. Nws yog ib qho thermoplastic polymer ua los ntawm chloroethene monomers. Cov khoom siv polymer no yog cov khoom siv polymer ntau heev, nrog rau polyethene thiab polypropylene. PVC polymer tuaj yeem muab faib ua ob pawg raws li daim ntawv nruj thiab hloov tau yooj yim. Ntawm lawv, cov khoom siv PVC nruj yog qhov tseem ceeb hauv kev tsim kho kev xav tau, qhov hloov pauv PVC daim ntawv yog qhov tseem ceeb rau kev xaim thiab cables.
Daim duab 01: A PVC Yeeb Nkab
Thaum xav txog kev tsim cov PVC, muaj peb kauj ruam loj. Thawj kauj ruam suav nrog kev hloov pauv ntawm ethane rau hauv 1, 2-dichloroethane, uas yog ua los ntawm chlorination. Cov kauj ruam tom ntej ntawm PVC ntau lawm yog tawg 1, 2-dichloroethane rau hauv chloroethene, nrog rau kev tshem tawm ntawm HCl molecule. Cov kauj ruam kawg ntawm PVC ntau lawm yog cov txheej txheem polymerization ntawm chloroethene txhawm rau tsim cov khoom siv PVC ntawm cov dawb radical polymerization.
Muaj ntau yam tseem ceeb ntawm cov khoom siv PVC, suav nrog kev ua haujlwm siab, cov khoom siv tau zoo, tsis muaj cua sov ruaj khov, nplaim hluav taws kub zoo, hluav taws xob rwb thaiv tsev siab, thiab tshuaj lom neeg. Ntxiv mus, muaj ntau yam txiaj ntsig rau kev siv PVC. Piv txwv li, nws tau yooj yim muaj nyob rau hauv kev ua lag luam, thiab nws yog cov khoom pheej yig nrog lub zog tensile zoo. Cov khoom no kuj tiv taus cov tshuaj xws li acids thiab bases.
PTMT yog dab tsi?
Lo lus PTMT sawv rau polytrimethylene terephthalate. Nws yog cov khoom siv polyester uas tau tsim thiab patented hauv xyoo 1941. Cov txheej txheem ntawm kev tsim khoom yog condensation polymerization. Cov monomers uas tsim cov qauv ntawm PTMT yog 1, 3-propanediol thiab terephthalic acid. Cov tshuaj formula rau cov tshuaj no yuav muab tau raws li (C11H10O4)n.
Daim duab 02: Qhov Tseem Ceeb Rov Ua Haujlwm ntawm PTMT Cov Khoom
Zoo ib yam li kev siv loj ntawm polyethylene terephthalate, cov khoom no kuj siv los tsim cov ntaub pua plag fibers. Tus nqi ntawm cov khoom no yog txhim kho nyob rau hauv kev lag luam nplai vim kev lag luam ntau dua thiab muaj txiaj ntsig ntawm kev tsim 1, 3-propanediol. Txoj kev loj hlob no tau tso cai rau cov polymer no ua tau zoo sib tw nrog lwm cov polymers zoo xws li PBT thiab PET, uas yog ob qho khoom siv polyester.
Qhov txawv ntawm PVC thiab PTMT yog dab tsi?
PVC thiab PTMT yog cov khoom siv polymer. PVC stands rau polyvinyl chloride thaum PTMT stands rau polytrimethylene terephthalate. Qhov sib txawv tseem ceeb ntawm PVC thiab PTMT yog PVC yog tsim los ntawm cov dawb radical polymerization thaum PTMT yog tsim los ntawm condensation polymerization. Ntxiv mus, thaum xav txog cov monomers siv rau cov txheej txheem polymerization, cov monomer rau PVC yog chloroethane thaum monomers rau PTMT ntau lawm yog 1, 3-propanediol thiab terephthalic acid.
Hais txog cov ntawv thov, muaj cov ntawv thov sib txawv ntawm PVC, suav nrog kev xav tau kev tsim kho, muaj txiaj ntsig zoo rau kev xaim thiab cables, kev tsim cov kav dej PVC, thiab lwm yam thaum PTMT yog siv los tsim cov ntaub pua plag fibers.
Hauv qab infographic qhia txog qhov sib txawv ntawm PVC thiab PTMT hauv daim ntawv tabular.
Summary - PVC thiab PTMT
PVC thiab PTMT yog cov polymers muaj cov qauv tshuaj sib txawv, cov khoom siv, kev siv thiab kev tsim khoom. Qhov sib txawv tseem ceeb ntawm PVC thiab PTMT yog PVC yog tsim los ntawm cov dawb radical polymerization thaum PTMT yog tsim los ntawm condensation polymerization. Thaum xav txog cov monomers siv rau cov txheej txheem polymerization, cov monomer rau PVC yog chloroethane thaum cov monomers rau PTMT ntau lawm yog 1, 3-propanediol thiab terephthalic acid.
