Cov kav dej polyvinyl chloride (PVC) tau dhau los ua lub hauv paus tseem ceeb ntawm cov khoom siv niaj hnub no, kev tsim kho, thiab cov kav dej, uas muaj nqis rau lawv qhov ruaj khov, pheej yig, thiab kev siv tau ntau yam. Qhov zoo ntawm cov kav dej no feem ntau yog txiav txim siab los ntawm hom PVC resin siv rau hauv lawv cov khoom tsim.
Hauv phau ntawv qhia no, peb yuav kawm txog lub ntiaj teb ntawm PVC resins, tshawb nrhiav cov yam tseem ceeb uas yuav tsum xav txog thaum xaiv cov resin zoo tshaj plaws rau kev tsim cov yeeb nkab zoo.
Cov Yam Cuam Tshuam Rau Kev Xaiv PVC Resin
Kev xaiv cov tshuaj PVC zoo rau kev tsim cov yeeb nkab yuav tsum xav txog ntau yam, suav nrog:
Qhov Hnyav Molecular: Qhov hnyav molecular ntawm PVC resin ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab lub zog cuam tshuam ntawm cov yeeb nkab, qhov tawv, thiab kev ua tau zoo tag nrho. Cov resins hnyav molecular siab dua feem ntau ua rau cov yeeb nkab muaj kev tiv thaiv kev cuam tshuam thiab kev ruaj khov zoo dua.
Melt Flow Index (MFI): MFI qhia txog qhov dej ntws ntawm cov resin thaum lub sijhawm extrusion. Ib qho MFI tsim nyog ua kom du extrusion, cov yeeb nkab loj sib npaug, thiab txo cov teeb meem ua tiav.
Kub ntawm Vicat Softening (Vicat B): Vicat B sawv cev rau qhov kub uas cov resin pib soften thaum lub sijhawm thauj khoom. Tus nqi Vicat B siab dua qhia tau tias cov kav dej tiv taus cua sov zoo dua thiab ruaj khov dua.
Cov Khoom Ntxiv: Cov yas PVC feem ntau yog tsim los ntawm cov khoom ntxiv los txhim kho lawv cov khoom thiab cov yam ntxwv ua haujlwm. Cov khoom ntxiv feem ntau suav nrog cov tshuaj stabilizers, cov khoom sau, cov roj nplua nyeem, thiab cov khoom hloov pauv.
Hom PVC Resin rau Kev Tsim Yeeb Nkab
Raws li cov yam ntxwv saum toj no, PVC resins rau kev tsim cov yeeb nkab tuaj yeem faib ua ob hom tseem ceeb:
Cov PVC Uas Muaj Kev Txo (S-PVC): Cov S-PVC resins yog tsim los ntawm kev siv cov txheej txheem polymerization uas muaj kev txo, ua rau muaj cov khoom me me uas muaj qhov hnyav sib txawv. Lawv muab qhov sib npaug zoo ntawm lub zog cuam tshuam, kev tawv, thiab cov yam ntxwv ua tiav.
Emulsion PVC (E-PVC): Cov E-PVC resins yog tsim los ntawm cov txheej txheem emulsion polymerization, ua rau cov khoom me me nrog qhov faib tawm molecular nqaim dua. Lawv feem ntau qhia txog lub zog cuam tshuam siab dua thiab qis dua piv rau S-PVC resins.
Xaiv Cov Resin Zoo Tshaj Plaws rau Koj Cov Kev Xav Tau
Qhov kev xaiv cov PVC resin uas tsim nyog tshaj plaws rau kev tsim cov yeeb nkab nyob ntawm seb daim ntawv thov tshwj xeeb thiab cov yam ntxwv ntawm cov yeeb nkab xav tau. Piv txwv li, cov yeeb nkab uas siv rau kev siv siab yuav tsum muaj cov resin uas muaj qhov hnyav molecular siab thiab Vicat B tus nqi kom ntseeg tau tias muaj zog txaus thiab tiv taus cua sov.
Qhov sib txawv, cov kav dej rau cov ntawv thov uas tsis muaj kev nyem, xws li kev ntws dej lossis kev ywg dej, yuav muab qhov tseem ceeb rau lub zog cuam tshuam thiab yooj yim ntawm kev ua tiav, ua rau E-PVC resins yog qhov kev xaiv tsim nyog.
Xaus lus
Kev xaiv cov yas PVC yog ib qho tseem ceeb ntawm kev tsim cov kav dej PVC zoo. Los ntawm kev nkag siab txog cov yam tseem ceeb uas cuam tshuam rau kev xaiv cov yas thiab cov yam ntxwv ntawm ntau hom yas, cov neeg tsim cov kav dej tuaj yeem txiav txim siab tau zoo uas ua kom cov kav dej ua haujlwm tau zoo thiab ua tau raws li qhov xav tau ntawm ntau yam kev siv.
Nco ntsoov tias kev sab laj nrog cov neeg muag khoom PVC resin uas muaj kev paub dhau los thiab nrhiav kev qhia txog kev siv tshuab yuav pab tau koj xaiv cov resin zoo tshaj plaws rau koj cov kev xav tau tshwj xeeb ntawm kev tsim cov yeeb nkab.
Lub sijhawm tshaj tawm: Lub Xya Hli-02-2024