Daim ntawv no tshawb nrhiav seb cov khoom siv cua sov puas cuam tshuam rau cov khoom PVC li cas, tsom mus raukev tiv taus cua sov, kev ua tiav, thiab kev pom tseebLos ntawm kev tshuaj xyuas cov ntaub ntawv thiab cov ntaub ntawv sim, peb tshuaj xyuas kev sib cuam tshuam ntawm cov stabilizers thiab PVC resin, thiab lawv ua li cas rau kev ruaj khov thermal, yooj yim tsim khoom, thiab cov khoom siv optical.
1. Kev Taw Qhia
PVC yog ib qho thermoplastic uas siv dav dav, tab sis nws qhov tsis ruaj khov thermal txwv tsis pub ua.Cov khoom siv cua sov ruaj khovtxo qhov kev puas tsuaj ntawm qhov kub siab thiab tseem cuam tshuam rau kev ua tiav thiab pob tshab - qhov tseem ceeb rau cov ntawv thov xws li kev ntim khoom thiab cov yeeb yaj kiab architectural.
2. Kev Tiv Thaiv Kub ntawm Cov Stabilizers hauv PVC
2.1 Cov Txheej Txheem Ruaj Khoov
Cov tshuaj stabilizer sib txawv (ua los ntawm txhuas,calcium-zinc, organotin) siv cov kev sib txawv:
Ua raws li cov hlau lead: Ua rau cov tshuaj Cl atoms tsis ruaj khov hauv PVC saw hlau los tsim cov khoom ruaj khov, tiv thaiv kev puas tsuaj.
Calcium-zincUa ke cov acid-binding thiab radical-scavenging.
Organotin (methyl/butyl tin): Sib koom tes nrog cov saw polymer kom tiv thaiv dehydrochlorination, ua kom zoo tiv thaiv kev puas tsuaj.
2.2 Kev Soj Ntsuam Kev Ruaj Ntseg Thermal
Kev ntsuam xyuas thermogravimetric (TGA) qhia tau tias organotin-stabilized PVC muaj qhov kub thiab txias pib lwj dua li cov txheej txheem calcium-zinc ib txwm muaj. Txawm hais tias cov tshuaj stabilizers ua los ntawm txhuas muab kev ruaj khov mus sij hawm ntev hauv qee cov txheej txheem, kev txhawj xeeb txog ib puag ncig/kev noj qab haus huv txwv tsis pub siv.
3. Cov Teeb Meem Ua Tau
3.1 Cov dej ntws thiab viscosity
Cov stabilizers hloov pauv PVC txoj kev yaj:
Calcium-zincTej zaum yuav ua rau kom cov viscosity ntawm yaj nce ntxiv, ua rau cuam tshuam rau kev extrusion/txhaj tshuaj molding.
OrganotinTxo qhov viscosity kom du thiab txias dua—zoo tagnrho rau cov kab ua haujlwm ceev ceev.
Ua raws li cov hlau lead: Cov dej ntws nruab nrab tab sis qhov rais ua haujlwm nqaim vim muaj kev pheej hmoo ntawm cov phaj.
3.2 Kev Siv Lubrication & Kev Tso Tawm Pwm
Qee cov stabilizers ua haujlwm ua cov roj nplua nyeem:
Cov tshuaj calcium-zinc feem ntau muaj cov roj nplua nyeem sab hauv los txhim kho kev tso pwm hauv kev txhaj tshuaj molding.
Cov tshuaj Organotin stabilizers ua rau PVC sib xws, thiab tsis ncaj qha pab ua kom yooj yim dua.
4. Kev Cuam Tshuam Rau Kev Pom Tseeb
4.1 Kev Sib Cuam Tshuam Nrog PVC Qauv
Kev pob tshab nyob ntawm seb cov stabilizer dispersion hauv PVC yog dab tsi:
Cov tshuaj calcium zinc uas tawg tau zoo, me me, txo qhov kev tawg ntawm lub teeb, thiab khaws qhov meej.
Cov tshuaj stabilizers ntawm Organotinsib xyaw ua ke rau hauv PVC saw hlau, txo cov teeb meem pom kev tsis sib xws.
Cov tshuaj stabilizers uas muaj txhuas (cov khoom loj, faib tsis sib npaug) ua rau muaj kev tawg ntawm lub teeb hnyav, ua rau qhov pom tseeb tsis meej.
4.2 Hom Stabilizer & Pob tshab
Cov kev tshawb fawb sib piv qhia tau tias:
Cov yeeb yaj kiab PVC uas ruaj khov Organotin ncav cuag > 90% kev xa lub teeb.
Cov tshuaj calcium - zinc stabilizers ua rau ~ 85–88% kev xa tawm.
Cov stabilizers uas muaj cov hlau txhuas ua haujlwm tsis zoo.
Cov teeb meem zoo li "ntses qhov muag" (khi rau qhov zoo ntawm stabilizer / kev tawg) kuj txo qhov meej - cov stabilizer zoo txo cov teeb meem no.
5. Xaus Lus
Cov khoom siv cua sov tseem ceeb rau kev ua PVC, kev ua kom sov tsis kam, kev ua haujlwm tau zoo, thiab pob tshab:
Ua raws li cov hlau lead: Muab kev ruaj khov tab sis ntsib kev tawm tsam ntawm ib puag ncig.
Calcium-zincZoo rau ib puag ncig tab sis xav tau kev txhim kho hauv kev ua tiav / kev pom tseeb.
OrganotinZoo tshaj plaws thoob plaws txhua yam tab sis ntsib teeb meem nqi / kev cai lij choj hauv qee thaj chaw.
Kev tshawb fawb yav tom ntej yuav tsum tsim cov stabilizers uas sib npaug kev ruaj khov, kev ua haujlwm zoo, thiab qhov zoo ntawm qhov muag kom tau raws li kev xav tau ntawm kev lag luam.
Lub sijhawm tshaj tawm: Lub Rau Hli-23-2025