Tawv tawv cuav (lossis tawv hluavtaws) tau dhau los ua ib yam khoom tseem ceeb hauv kev lag luam txij li kev zam mus rau tsheb, ua tsaug rau nws qhov ruaj khov, pheej yig, thiab ntau yam. Rau cov neeg tsim cov tawv cuav uas ua los ntawm PVC, txawm li cas los xij, ib qho feem ntau sawv ntawm kev tsim khoom du thiab kim heev:Cov khoom siv PVC stabilizerCov tshuaj ntxiv no tseem ceeb heev rau kev tiv thaiv kev puas tsuaj ntawm PVC thaum lub sijhawm ua haujlwm kub siab (xws li calendering lossis txheej), tab sis kev xaiv cov stabilizer tsis raug - lossis kev tswj hwm nws txoj kev siv tsis raug - tuaj yeem ua rau muaj kev ua tsis zoo, kev nplua nyiaj, thiab poob nyiaj.
Cia peb piav qhia txog cov teeb meem tseem ceeb uas cov tuam txhab tsim tawv PVC ntsib nrog cov stabilizers, thiab cov kev daws teeb meem zoo los kho lawv.
Qhov Mob 1: Kev Ruaj Ntseg Kub Tsis Zoo = Cov Khoom Siv Pov Tseg & Cov Khoom Tsis Pub Lwm Tus Paub
Qhov kev ntxhov siab tshaj plaws yog dab tsi? PVC yooj yim lwj thaum cua sov tshaj 160°C—yog qhov kub uas siv los txuas PVC cov resins nrog cov plasticizers thiab ua tawv cuav. Yog tsis muaj kev ruaj khov zoo, cov khoom siv yuav daj, tawg, lossis tso pa lom (xws li hydrochloric acid). Qhov no ua rau:
• Cov nqi pov tseg siab heev (txog li 15% hauv qee lub Hoobkas).
• Cov nqi kho dua tshiab rau cov khoom uas puas lawm.
• Kev qeeb hauv kev ua raws li cov lus txib ntawm cov neeg siv khoom.
Kev daws teeb meem: Hloov mus rau High-Efficiency Composite Stabilizers
Cov tshuaj stabilizer ib txwm muaj (piv txwv li, cov ntsev txhuas yooj yim) feem ntau tsis ua haujlwm zoo hauv kev raug cua sov ntev. Hloov chaw, xaiv rauCov tshuaj stabilizers uas ua los ntawm calcium-zinc (Ca-Zn)los yog cov tshuaj organotin stabilizers—ob qho tib si tsim los rau cov kev xav tau tshwj xeeb ntawm PVC tawv nqaij:
• Cov Ca-Zn sib xyaw ua ke muab kev ruaj khov zoo heev (tawv tau 180–200°C rau 30+ feeb) thiab sib xws nrog cov tshuaj ua kom mos mos uas siv rau hauv cov tawv nqaij cuav uas yoog tau.
• Cov tshuaj Organotin stabilizers (piv txwv li, methyltin) ua rau cov tawv nqaij pom tseeb thiab khaws xim zoo dua - zoo tagnrho rau cov tawv nqaij cuav zoo tshaj plaws (piv txwv li, cov khaub ncaws vegan, cov rooj zaum zoo nkauj).
• Lub Tswv Yim Zoo: Siv cov tshuaj stabilizer nrog cov khoom sib xyaw xws li cov tshuaj antioxidants lossis cov tshuaj nqus UV kom ntev zog tiv taus kub.
Qhov Mob 2: Kev Tsis Ua Raws Li Ib Puag Ncig & Kev Cai Lij Choj
Cov kev cai lij choj thoob ntiaj teb (EU REACH, US CPSC, Tuam Tshoj tus GB Standards) tab tom tawm tsam cov tshuaj lom neeg ruaj khov - tshwj xeeb tshaj yog cov hlau lead, cadmium, thiab cov kev xaiv uas muaj mercury. Ntau lub tuam txhab tsim khoom tseem vam khom cov ntsev hlau lead pheej yig, tsuas yog ntsib:
• Txwv tsis pub xa cov khoom tiav lawm tuaj.
• Yuav raug nplua hnyav rau cov neeg tsis ua raws li txoj cai.
• Kev puas tsuaj rau lub koob npe nrov ntawm hom lag luam (cov neeg siv khoom xav tau cov tawv hluavtaws "ntsuab".
Kev daws teeb meem: Txais yuav cov khoom ruaj khov uas zoo rau ib puag ncig, ua raws li txoj cai
Tso tseg cov hlau hnyav uas muaj tshuaj lom thiab siv lwm yam uas tsis muaj lead, cadmium uas ua tau raws li cov qauv thoob ntiaj teb:
• Ca-Zn stabilizers: Ua raws li REACH thiab RoHS tag nrho, ua rau lawv zoo tagnrho rau cov chaw tsim khoom uas tsom mus rau kev xa khoom mus rau txawv teb chaws.
• Cov tshuaj stabilizers uas tsis tshua muaj: Ib qho kev xaiv tshiab uas muab kev ruaj khov thermal nrog kev lom tsawg - zoo heev rau cov kab tawv nqaij cuav uas muaj daim ntawv lo rau ib puag ncig.
• Tshawb xyuas koj cov khoom siv: Ua haujlwm nrog cov neeg muab khoom siv stabilizer uas muab daim ntawv pov thawj ua raws li txoj cai sab nraud (piv txwv li, SGS, Intertek) kom tsis txhob muaj cov tshuaj lom zais.
Qhov Mob 3: Qhov Mos thiab Kev Ruaj Khov Tsis Sib Xws
Cov tawv cuav zoo nkauj nyob ntawm seb nws puas kov tau zoo—tawv dhau, thiab nws tsis zoo rau cov rooj zaum; nws puas yooj yim dhau, thiab nws ua rau khau tawg. Cov khoom ruaj khov cuam tshuam ncaj qha rau qhov no: cov kev xaiv tsis zoo tuaj yeem ua rau cov yas hloov pauv, txo qhov yooj ywm lossis ua rau cov khoom tawv dhau sijhawm.
Kev daws teeb meem: Kho cov khoom ruaj khov kom haum rau qhov xav tau ntawm kev siv kawg
Tsis yog txhua daim tawv cuav zoo ib yam - yog li koj cov stabilizer yuav tsum tsis txhob zoo ib yam. Kho koj cov mis raws li cov khoom:
• Rau kev siv mos mos (piv txwv li, hnab looj tes, hnab): SivCov kua Ca-Zn stabilizers, uas sib tov sib npaug nrog cov plasticizers kom tswj tau qhov yooj ywm.
• Rau kev siv hnyav (piv txwv li, cov rooj zaum hauv tsheb, cov siv rau kev lag luam): Ntxivbarium-zinc (Ba-Zn) stabilizersnrog roj taum pauv epoxidized (ESBO) los txhawb kev tiv thaiv kua muag.
• Sim ua tej pawg me me ua ntej: Khiav kev sim nrog cov tshuaj stabilizer sib txawv (feem ntau yog 1–3% ntawm qhov hnyav ntawm PVC resin) kom nrhiav tau qhov chaw zoo tshaj plaws ntawm kev mos thiab kev ruaj khov.
Qhov Mob 4: Cov Nqi Nce Siab ntawm Cov Khoom Siv Stabilizer Raw
Xyoo 2024–2025, tus nqi rau cov khoom xyaw tseem ceeb uas ua rau cov khoom ruaj khov (piv txwv li, zinc oxide, cov organic tin compounds) tau nce siab vim muaj kev tsis txaus ntawm cov khoom siv. Qhov no ua rau cov neeg tsim cov tawv nqaij cuav uas muaj cov nyiaj tau los tsawg dua.
Kev daws teeb meem: Txhim kho qhov koob tshuaj & Tshawb nrhiav cov khoom sib xyaw ua dua tshiab
• Siv "tshuaj tsawg kawg nkaus uas ua haujlwm tau zoo": Siv cov tshuaj stabilizer ntau dhau yuav ua rau cov nyiaj tsis zoo dua. Ua haujlwm nrog cov kws kho mob hauv chav kuaj kom sim cov feem pua tsawg tshaj plaws (feem ntau yog 0.8–2%) uas ua tau raws li cov qauv zoo.
• Sib tov cov khoom ruaj khov uas siv rov qab los: Rau cov tawv cuav uas tsis yog cov khoom zoo tshaj plaws (piv txwv li, cov ntim khoom, cov khau pheej yig), sib tov 20–30% cov khoom ruaj khov Ca-Zn uas siv rov qab los nrog cov uas tsis tau siv dua—qhov no yuav txo cov nqi los ntawm 10–15% yam tsis muaj kev cuam tshuam rau kev ruaj khov.
• Xauv cov ntawv cog lus ntev rau cov neeg muab khoom: Sib tham txog cov nqi ruaj khov nrog cov chaw tsim khoom ruaj khov uas ntseeg tau kom tsis txhob muaj kev hloov pauv ntawm tus nqi.
Cov Khoom Ruaj Khoov = Txoj Kab Kev Tsim Khoom
Rau cov neeg tsim cov tawv nqaij cuav PVC, kev xaiv cov stabilizer zoo tsis yog ib qho kev xav tom qab xwb - nws yog ib qho kev txiav txim siab zoo uas cuam tshuam rau qhov zoo, kev ua raws li txoj cai, thiab kev ua lag luam. Los ntawm kev tso tseg cov kev xaiv qub, lom rau cov khoom sib xyaw ua ke zoo, zoo rau ib puag ncig, thiab kho cov qauv kom haum rau kev siv kawg, koj tuaj yeem txo cov khib nyiab, zam kev pheej hmoo ntawm kev cai lij choj, thiab xa cov khoom uas sawv tawm hauv kev ua lag luam sib tw.
Npaj txhij los hloov kho koj txoj kev tswj kom ruaj khov? Pib nrog kev sim ua ke ntawm Ca-Zn lossis organotin composites - koj lub thoob khib nyiab (thiab cov nyiaj tau los) yuav ua tsaug rau koj.
Lub sijhawm tshaj tawm: Lub Kaum Hli-29-2025