Kev siv PVC dav dav los nrog qhov kev txwv tseem ceeb: nws qhov tsis muaj zog rau kev puas tsuaj thaum raug cua sov thiab kev ntxhov siab thaum lub sijhawm ua tiav.Cov khoom siv PVC stabilizerUa kom tiav qhov sib txawv no ua cov khoom ntxiv tseem ceeb, khaws cov qauv thiab cov khoom ua haujlwm ntawm cov polymer. Ntawm cov hom stabilizer muaj, cov kua thiab cov hmoov sib txawv ua rau kev ua lag luam, txhua tus muab cov yam ntxwv sib txawv, cov txiaj ntsig, thiab cov xwm txheej siv zoo tshaj plaws.
Ua ntej tshawb nrhiav qhov sib txawv ntawm cov kua thiab cov hmoov stabilizers, nws yog ib qho tseem ceeb kom nkag siab txog cov hauv paus ntawm PVC degradation thiab qhov tsis sib haum xeeb xav tau kev ruaj khov. Cov qauv molecular ntawm PVC muaj cov chlorine atoms txuas rau polymer backbone, uas ua rau nws tsis ruaj khov. Thaum raug cua sov - xws li thaum lub sijhawm extrusion, txhaj tshuaj molding, lossis calendering - mechanical shear, lossis txawm tias lub hnub ci ntev, PVC dhau los ntawm cov saw hlau dehydrochlorination reaction. Cov txheej txheem no tso tawm cov roj hydrogen chloride, uas ua haujlwm ua tus catalyst kom ua kom nrawm dua degradation, tsim kom muaj lub voj voog vicious. Thaum degradation nce qib, cov saw polymer tawg, ua rau muaj kev hloov pauv, brittleness, poob ntawm lub zog mechanical, thiab thaum kawg, ua tsis tiav ntawm cov khoom kawg. PVC stabilization ua haujlwm los ntawm kev cuam tshuam qhov kev voj voog degradation no los ntawm ib lossis ntau lub tshuab: scavenging HCl los tiv thaiv catalytic acceleration, hloov cov chlorine atoms labile hauv cov saw polymer los txo qhov pib ntawm degradation, inhibiting oxidation, lossis nqus UV hluav taws xob rau kev siv sab nraum zoov. Cov cua sov stabilizers, ib pawg ntawm PVC stabilizers tsom mus rau kev txo qis thermal degradation thaum lub sijhawm ua tiav, yog cov feem ntau siv hauv PVC tsim. Thaum ob qho tib si kua thiab hmoov stabilizers ua haujlwm uacov tshuaj stabilizer kub, lawv cov duab, cov khoom sib xyaw, thiab cov khoom siv ua rau muaj qhov sib txawv tseem ceeb hauv kev ua tau zoo thiab kev siv tau.
PVC stabilization ua haujlwm los ntawm kev cuam tshuam qhov kev puas tsuaj no los ntawm ib lossis ntau txoj hauv kev: scavenging HCl los tiv thaiv catalytic acceleration, hloov cov chlorine atoms hauv cov saw polymer kom txo qhov pib puas tsuaj, tiv thaiv oxidation, lossis nqus UV hluav taws xob. Cov tshuaj stabilizers kub, ib pawg ntawm PVC stabilizers tsom mus rau kev txo qhov thermal degradation thaum lub sijhawm ua tiav, yog hom feem ntau siv hauv PVC tsim. Ob qho tib si kua thiab hmoov stabilizers ua haujlwm ua cov tshuaj stabilizers kub, tab sis lawv cov duab, cov khoom sib xyaw, thiab cov khoom tuav tsim qhov sib txawv tseem ceeb hauv kev ua tau zoo thiab kev siv tau.
Qhov Txawv Tseem Ceeb Ntawm Cov Kua Thiab Hmoov PVC Stabilizers
Cov kua thiab hmoov PVC stabilizers sib txawv deb tshaj lawv lub cev; lawv cov khoom sib xyaw, kev sib raug zoo nrog PVC thiab lwm yam khoom ntxiv, cov kev cai ua tiav, thiab kev cuam tshuam rau cov khoom kawg sib txawv heev. Pib nrog cov khoom sib xyaw thiab cov tshuaj lom neeg, cov hmoov PVC stabilizers feem ntau yog cov khoom khov kho raws li cov xab npum hlau - xws li calcium stearate, zinc stearate, lossis barium stearate - organotin compounds, lossis cov hlau sib xyaw xws li calcium-zinc lossis barium-zinc. Lawv kuj tseem yuav muaj cov khoom inert fillers lossis cov neeg nqa khoom los txhim kho kev ntws thiab kev sib kis, nrog rau cov khoom khov kho ua tiav los ntawm kev ziab, sib tsoo, lossis cov txheej txheem granulation, ua rau cov hmoov lossis cov khoom granular ntws dawb. Cov kua PVC stabilizers, los ntawm qhov sib piv, yog cov kua formulations feem ntau raws li cov tshuaj organotin (piv txwv li, dioctyltin maleate), epoxy plasticizers, lossis kua hlau xab npum, feem ntau suav nrog cov co-stabilizers thiab cov neeg sawv cev plasticizing los txhawb kev sib raug zoo thiab kev ua tau zoo. Lawv cov kua daim ntawv ua rau kev koom ua ke yooj yim dua ntawm cov roj-soluble additives, ua rau lawv zoo tagnrho rau cov formulations xav tau kev ywj pheej lossis cov teebmeem plasticizing tshwj xeeb.
▼ Cov Khoom Siv thiab Tshuaj Lom Zem
Cov hmoov PVC stabilizersfeem ntau yog cov qauv khov kho, feem ntau yog ua los ntawm cov xab npum hlau (piv txwv li, calcium stearate, zinc stearate, barium stearate), cov tshuaj organotin, lossis cov hlau sib xyaw (calcium-zinc, barium-zinc). Lawv kuj tseem yuav muaj cov khoom siv inert lossis cov neeg nqa khoom los txhim kho kev ntws thiab kev sib kis. Cov qauv khov kho tau ua tiav los ntawm kev ziab, sib tsoo, lossis cov txheej txheem granulation, ua rau cov hmoov lossis cov khoom granular ntws dawb.
Cov kua PVC stabilizers, ntawm qhov tod tes, yog cov kua formulations, feem ntau yog raws li cov organotin compounds, epoxy plasticizers, lossis kua hlau xab npum. Lawv feem ntau suav nrog co-stabilizers thiab plasticizing agents los txhim kho kev sib raug zoo thiab kev ua tau zoo. Cov kua daim ntawv tso cai rau kev sib xyaw yooj yim ntawm cov roj-soluble additives, ua rau lawv zoo tagnrho rau cov formulations xav tau kev ywj pheej lossis cov teebmeem plasticizing tshwj xeeb.
▼ Kev Sib Haum Xeeb thiab Kev Sib Tshuam
Kev tawg tawm—qhov kev faib tawm ntawm cov stabilizer thoob plaws hauv PVC matrix yog qhov tseem ceeb rau kev ruaj khov zoo, vim tias kev tawg tawm tsis zoo ua rau muaj kev tiv thaiv tsis sib xws, kev puas tsuaj hauv zos, thiab cov khoom tsis zoo. Hauv qhov no, cov kua stabilizers zoo tshaj plaws, tshwj xeeb tshaj yog hauv cov qauv PVC yooj ywm (piv txwv li, PVC zaj duab xis, cables, hoses) nrog cov ntsiab lus plasticizer tseem ceeb. Vim tias sib xyaw nrog feem ntau cov plasticizers, cov kua stabilizers sib xyaw ua ke rau hauv PVC compound thaum sib tov, ua kom muaj kev npog sib xws thoob plaws hauv polymer matrix thiab tshem tawm qhov kev pheej hmoo ntawm "cov chaw kub"—cheeb tsam uas tsis muaj kev ruaj khov tsis txaus—uas tuaj yeem tshwm sim nrog kev tawg tawm tsis zoo. Txawm li cas los xij, cov hmoov stabilizers xav tau kev sib tov ceev faj ntau dua kom ua tiav kev tawg tawm zoo tshaj plaws, tshwj xeeb tshaj yog hauv cov qauv PVC tawv (piv txwv li, cov kav dej, cov qhov rai profiles) qhov twg cov qib plasticizer qis lossis tsis muaj. Cov khoom khov kho yuav tsum tau faib kom huv si kom tsis txhob muaj kev sib sau ua ke, uas tuaj yeem ua rau muaj qhov tsis zoo ntawm qhov chaw lossis txo qhov ua haujlwm ruaj khov. Hmoov zoo, kev nce qib hauv cov qauv hmoov, xws li cov hmoov micronized thiab cov khoom granulated, tau txhim kho lawv cov peev xwm tawg tawm, nthuav lawv txoj kev muaj sia nyob thoob plaws ntau yam kev siv.
Cov tshuaj stabilizer ua tau zoo heev hauv kev sib kis, tshwj xeeb tshaj yog hauv cov qauv PVC uas muaj cov yas ntau heev. Vim tias cov tshuaj stabilizer ua tau sib xyaw nrog feem ntau cov yas, lawv sib xyaw ua ke zoo rau hauv PVC thaum sib tov, ua kom muaj kev sib xws thoob plaws hauv cov polymer matrix. Qhov no tshem tawm qhov kev pheej hmoo ntawm "cov chaw kub" uas tuaj yeem tshwm sim nrog kev sib kis tsis zoo.
Cov tshuaj stabilizer hmoov, los ntawm qhov sib piv, xav tau kev sib xyaw ua ke kom zoo dua kom ua tiav qhov kev sib kis zoo tshaj plaws, tshwj xeeb tshaj yog nyob rau hauv cov qauv PVC khov kho qhov twg cov qib plasticizer qis lossis tsis muaj. Cov khoom khov kho yuav tsum tau faib kom huv si kom tsis txhob muaj kev sib sau ua ke, uas tuaj yeem ua rau muaj qhov tsis zoo ntawm qhov chaw lossis txo qhov ua haujlwm ntawm kev ruaj khov. Txawm li cas los xij, kev nce qib hauv kev tsim cov hmoov tau txhim kho cov peev xwm sib kis, ua rau lawv muaj peev xwm siv tau ntau dua rau ntau yam kev siv.
▼ Cov Kev Cai Ua Haujlwm thiab Kev Ua Haujlwm Zoo
Lub cev ntawm cov stabilizer kuj tseem cuam tshuam ncaj qha rau kev ua haujlwm zoo, suav nrog lub sijhawm sib tov, kev siv zog, thiab qhov kub ua haujlwm. Cov kua stabilizers txo lub sijhawm sib tov thiab cov nqi zog los ntawm kev sib xyaw sai sai rau hauv PVC compound, tshem tawm qhov xav tau cov kauj ruam ntxiv los rhuav tshem cov khoom khov. Lawv kuj tseem yuav txo qhov viscosity yaj ntawm PVC, txhim kho kev ua haujlwm thaum lub sijhawm extrusion lossis molding. Cov hmoov stabilizers, ntawm qhov tod tes, xav tau lub sijhawm sib tov ntev dua thiab cov zog shear siab dua kom ntseeg tau tias muaj kev sib kis zoo; qee zaum, kev sib tov ua ntej nrog lwm cov khoom qhuav xws li cov khoom sau lossis cov roj nplua nyeem yog qhov tsim nyog los txhim kho kev ntws. Hais tias, cov hmoov stabilizers feem ntau muab kev ruaj khov thermal zoo dua ntawm qhov kub ua haujlwm siab dua piv rau lawv cov kua counterparts, ua rau lawv haum rau cov ntawv thov uas xav tau kev ua haujlwm kub siab, xws li PVC extrusion ntawm qhov kub siab dua 180 ° C.
Cov tshuaj ua kom cov kua ruaj khov txo cov sijhawm sib tov thiab cov nqi zog vim tias lawv sib xyaw sai sai rau hauv PVC compound. Lawv kuj tseem yuav txo qhov viscosity ntawm PVC yaj, txhim kho kev ua haujlwm thaum lub sijhawm extrusion lossis molding. Qhov no yog qhov tshwj xeeb tshaj yog rau cov kab ntau lawm ceev ceev uas qhov ua tau zoo yog qhov tseem ceeb tshaj plaws.
Cov tshuaj stabilizer hmoov xav tau lub sijhawm sib tov ntev dua thiab lub zog shear siab dua kom ntseeg tau tias muaj kev sib kis zoo. Qee zaum, kev sib tov ua ntej nrog lwm cov khoom ntxiv qhuav (piv txwv li, cov khoom sau, cov roj nplua nyeem) yog qhov tsim nyog los txhim kho kev ntws. Txawm li cas los xij, cov tshuaj stabilizer hmoov feem ntau muaj kev ruaj khov thermal siab dua ntawm qhov kub ua haujlwm siab dua piv rau cov kua sib piv, ua rau lawv haum rau cov ntawv thov uas xav tau kev ua haujlwm kub siab.
▼ Cov Khoom Kawg
Qhov kev xaiv ntawm cov kua thiab cov hmoov stabilizers kuj tseem cuam tshuam rau cov khoom kawg, suav nrog qhov tsos, kev ua haujlwm kho tshuab, thiab kev ruaj khov. Cov kua stabilizers yog qhov nyiam rau cov khoom uas xav tau qhov chaw du thiab ci ntsa iab - xws li PVC zaj duab xis, cov ntawv kho kom zoo nkauj, thiab cov raj kho mob - vim tias lawv cov kev sib kis zoo dua txo qhov tsis zoo ntawm qhov chaw xws li cov pob lossis cov kab txaij. Tsis tas li ntawd, ntau cov kua stabilizers muaj cov khoom yas uas ua kom tiav cov yas tseem ceeb, pab txhawb rau kev ywj pheej zoo dua thiab kev ntev hauv cov khoom PVC ywj pheej. Cov hmoov stabilizers, los ntawm qhov sib piv, zoo haum rau cov khoom PVC tawv qhov twg qhov tawv thiab kev cuam tshuam tsis kam yog qhov tseem ceeb, xws li cov kav dej, cov khoom siv, thiab cov siding. Lawv tsis pab txhawb rau kev yas, yog li khaws cov qauv tawv ntawm cov polymer, thiab feem ntau muab kev ruaj khov thermal ntev dua hauv cov khoom kawg, ua rau lawv zoo tagnrho rau cov ntawv thov uas xav tau lub neej ntev ntawm qhov kub siab, xws li cov kav dej kev lag luam thiab cov thawv hluav taws xob.
Cov tshuaj stabilizer ua kua yog qhov zoo dua rau cov khoom uas xav tau qhov chaw du thiab ci ntsa iab (piv txwv li, cov yeeb yaj kiab PVC, cov ntawv dai kom zoo nkauj, cov raj kho mob) vim tias lawv cov kev sib kis zoo dua txo qhov tsis zoo ntawm qhov chaw xws li cov pob lossis cov kab txaij. Lawv kuj pab txhawb kom muaj kev ywj pheej zoo dua thiab kev ntev dua hauv cov khoom PVC yooj ywm, vim tias ntau cov tshuaj stabilizer ua kua muaj cov khoom yas uas ua kom tiav cov yas tseem ceeb.
Cov tshuaj stabilizer hmoov zoo rau cov khoom PVC tawv uas qhov tawv thiab kev cuam tshuam tseem ceeb (piv txwv li, cov kav dej, cov khoom sib txuas, cov siding). Lawv tsis pab txhawb rau kev ua kom yas, yog li lawv tsis ua rau cov qauv tawv ntawm cov polymer puas tsuaj. Tsis tas li ntawd, cov tshuaj stabilizer hmoov feem ntau muab kev ruaj khov thermal zoo dua hauv cov khoom kawg, ua rau lawv zoo tagnrho rau cov ntawv thov uas xav tau lub neej ntev ntawm qhov kub siab (piv txwv li, cov kav dej kev lag luam, cov thawv hluav taws xob).
▼ Kev Xav Txog Tus Nqi
Tus nqi yog lwm qhov tseem ceeb hauv kev xaiv cov khoom ruaj khov, thiab nws yog qhov tseem ceeb uas yuav tsum xav txog tag nrho cov nqi ntawm kev muaj es tsis yog tus nqi ib chav xwb. Cov khoom ruaj khov ua kua feem ntau muaj tus nqi ib chav siab dua li cov khoom ruaj khov hmoov, tab sis lawv cov kev sib kis zoo dua thiab kev ua haujlwm zoo dua tuaj yeem txo cov nqi tsim khoom tag nrho los ntawm kev txo cov khib nyiab thiab txo cov nqi zog thiab cov nqi zog ua haujlwm cuam tshuam nrog kev sib tov. Hauv qee qhov kev siv, lawv kuj xav tau cov koob tshuaj me dua, them rau tus nqi siab dua ib chav. Cov khoom ruaj khov hmoov, nrog rau lawv cov nqi qis dua, yog qhov zoo rau cov ntawv thov uas xav tau tus nqi, tab sis lub sijhawm sib tov ntxiv, kev siv zog, thiab qhov muaj peev xwm rau cov khib nyiab vim kev sib kis tsis zoo tuaj yeem ua rau tag nrho cov nqi tsim khoom nce ntxiv. Ntxiv mus, qhov xav tau rau cov txheej txheem sau plua plav thiab kev khaws cia tshwj xeeb tuaj yeem ntxiv rau cov nqi ua haujlwm.
Cov tshuaj stabilizer ua kua feem ntau muaj tus nqi siab dua rau ib chav dua li cov tshuaj stabilizer hmoov. Txawm li cas los xij, lawv cov kev sib kis zoo dua thiab kev ua haujlwm zoo dua tuaj yeem txo cov nqi tsim khoom tag nrho los ntawm kev txo cov khib nyiab (tsawg dua cov khoom tsis zoo) thiab txo cov nqi zog thiab cov nqi ua haujlwm cuam tshuam nrog kev sib tov. Lawv kuj xav tau cov koob tshuaj me dua hauv qee qhov kev siv, them rau tus nqi siab dua rau ib chav.
Cov tshuaj ua kom cov hmoov ruaj khov muaj tus nqi qis dua, ua rau lawv nyiam rau cov ntawv thov uas xav tau tus nqi siab. Txawm li cas los xij, lub sijhawm sib tov ntxiv, lub zog, thiab qhov muaj peev xwm pov tseg vim yog kev sib kis tsis zoo tuaj yeem ua rau cov nqi tsim khoom ntau ntxiv. Tsis tas li ntawd, qhov xav tau cov tshuab sau plua plav thiab kev khaws cia tshwj xeeb yuav ntxiv rau cov nuj nqis ua haujlwm.
Xaiv Cov Khoom Siv PVC Ua Kua thiab Hmoov
Kev xaiv cov stabilizer zoo rau koj daim ntawv thov yuav tsum xav txog ntau yam, pib nrog koj cov qauv PVC - txawm tias tawv lossis yoog tau. Rau PVC yoog tau (nrog cov ntsiab lus plasticizer ntau dua 10%), cov kua stabilizers feem ntau yog qhov kev xaiv zoo tshaj plaws vim lawv sib xws nrog cov plasticizers, uas ua kom muaj kev sib kis zoo heev, thiab lawv lub peev xwm los txhim kho kev ywj pheej thiab qhov zoo ntawm qhov chaw; cov ntawv thov feem ntau ntawm no suav nrog PVC zaj duab xis, cables, hoses, gaskets, thiab cov raj kho mob. Rau PVC tawv (nrog cov ntsiab lus plasticizer tsawg dua 5% lossis tsis muaj), cov hmoov stabilizers yog qhov nyiam, vim lawv tsis ua rau muaj kev tawv thiab muab kev ruaj khov thermal zoo dua ntawm qhov kub siab ua haujlwm, ua rau lawv haum rau cov kav dej, qhov rai profiles, siding, fittings, thiab hluav taws xob enclosures.
Kauj Ruam 1: Txhais Koj Cov Qauv PVC (Rigid vs. Flexible)
Qhov no yog qhov tseem ceeb tshaj plaws. Rau cov PVC uas yoog tau, cov tshuaj stabilizers feem ntau yog qhov kev xaiv zoo tshaj plaws. Lawv qhov sib xws nrog cov plasticizers ua kom muaj kev sib kis zoo heev, thiab lawv txhim kho kev ywj pheej thiab qhov zoo ntawm qhov chaw. Cov ntawv thov feem ntau suav nrog PVC zaj duab xis, cables, hoses, gaskets, thiab cov raj kho mob.
Rau cov PVC uas tawv, cov tshuaj stabilizer hmoov yog qhov zoo dua. Lawv tsis ua rau lub zog tawv thiab muab kev ruaj khov zoo dua ntawm qhov kub siab. Cov ntawv thov suav nrog cov kav dej, cov qhov rai profile, siding, fittings, thiab cov thawv hluav taws xob.
Kauj Ruam 2: Soj Ntsuam Cov Xwm Txheej Ua Haujlwm
Xav txog koj qhov kub thiab qhov ceev ntawm kev ua haujlwm:
Kev ua haujlwm kub siab(>180°C): Cov hmoov stabilizers muab kev ruaj khov thermal zoo dua ntawm qhov kub siab, ua rau lawv haum rau PVC extrusion lossis txhaj tshuaj molding.
Kev tsim khoom ceev ceevCov tshuaj ua kom cov kua dej ruaj khov txo lub sijhawm sib tov thiab txhim kho kev ua haujlwm, ua rau lawv zoo tagnrho rau cov kab ua haujlwm sai.
Kauj Ruam 3: Tsom Xam Qhov Yuav Tsum Tau Ua Ntej Rau Cov Khoom Kawg
Yog tias qhov tiav du thiab ci ntsa iab yog qhov tseem ceeb - piv txwv li, hauv cov ntawv dai kom zoo nkauj lossis cov khoom siv kho mob - cov tshuaj stabilizer kua zoo dua. Rau kev ua haujlwm kho tshuab, cov tshuaj stabilizer hmoov zoo dua rau cov khoom tawv uas xav tau kev tawv thiab kev tiv thaiv kev cuam tshuam, thaum cov tshuaj stabilizer kua yog qhov nyiam rau cov khoom yoog tau uas xav tau kev ntev thiab kev ywj pheej. Rau kev ruaj khov mus sij hawm ntev, tshwj xeeb tshaj yog hauv cov khoom uas raug rau qhov kub siab lossis qhov chaw nyuaj xws li cov kav dej kev lag luam lossis sab nraum zoov, cov tshuaj stabilizer hmoov muab kev ruaj khov thermal zoo dua mus sij hawm ntev. Kev ua raws li kev nyab xeeb thiab cov cai ib puag ncig kuj tsis tuaj yeem sib tham tau, vim tias qhov yuav tsum tau ua txawv ntawm thaj chaw thiab daim ntawv thov. Rau kev sib cuag zaub mov lossis kev siv kho mob, xaiv cov tshuaj stabilizer tsis muaj tshuaj lom - xws li cov tshuaj calcium-zinc hmoov stabilizers lossis cov tshuaj organotin kua zaub mov-qib stabilizers - uas ua tau raws li cov qauv xws li FDA lossis EU 10/2011. Los ntawm kev xav txog ib puag ncig, zam cov tshuaj stabilizer lom xws li cov hmoov ua los ntawm cov hlau lead lossis qee cov tshuaj organotin kua, uas raug txwv hauv ntau thaj chaw; cov tshuaj calcium-zinc hmoov stabilizers yog lwm txoj hauv kev ruaj khov.
Kauj Ruam 4: Ua Raws Li Cov Cai Kev Nyab Xeeb thiab Ib puag ncig
Cov kev cai lij choj sib txawv raws li thaj chaw thiab daim ntawv thov, yog li xyuas kom meej tias koj qhov kev xaiv stabilizer ua tau raws li cov qauv hauv zos:
Kev sib cuag zaub mov lossis kev siv kho mobNrhiav cov tshuaj stabilizer uas tsis muaj tshuaj lom (piv txwv li, cov tshuaj calcium-zinc hmoov stabilizers lossis cov tshuaj organotin stabilizers uas ua tau raws li FDA, EU 10/2011, lossis lwm cov qauv tseem ceeb.
Kev xav txog ib puag ncigTsis txhob siv cov tshuaj lom uas ua rau cov khoom ruaj khov (piv txwv li, cov hmoov uas muaj cov hlau lead, qee cov kua organotins) uas raug txwv tsis pub siv hauv ntau thaj chaw. Cov tshuaj calcium-zinc uas ua rau cov khoom ruaj khov yog lwm txoj hauv kev uas siv tau ntev.
Kauj Ruam 5: Tshuaj Xyuas Tag Nrho Tus Nqi ntawm Kev Muaj Tswv
Xam lub sijhawm sib tov, tus nqi zog, thiab tus nqi pov tseg rau ob qho kev xaiv kua thiab hmoov, thiab xav txog kev khaws cia thiab kev tuav cov nqi. Rau kev tsim khoom ntau, cov kua stabilizers yuav muab cov nqi qis dua txawm tias lawv tus nqi siab dua, thaum cov hmoov stabilizers yuav pheej yig dua rau cov ntawv thov tsawg, tus nqi qis. Cov kev tshawb fawb hauv ntiaj teb tiag tiag qhia ntxiv txog cov ntsiab cai xaiv no: rau cov kav dej kho mob PVC yooj ywm, uas xav tau qhov chaw du, biocompatibility, kev ua haujlwm tas mus li, thiab kev ua haujlwm ceev, cov kua organotin stabilizer yog qhov kev daws teeb meem, vim nws sib xyaw ua ke nrog cov yas kom ntseeg tau tias muaj kev ruaj khov sib xws thiab qhov chaw tsis muaj qhov tsis zoo, ua raws li cov cai kho mob zoo li FDA, thiab ua rau extrusion sai sai kom tau raws li cov kev xav tau ntau lawm. Rau cov kav dej phwj PVC ruaj khov, uas xav tau kev ruaj khov, kev tiv thaiv kev cuam tshuam, kev ruaj khov thermal ntev, thiab kev siv nyiaj txiag, cov calcium-zinc hmoov stabilizer yog qhov zoo tagnrho, vim nws khaws cia rigidity, muab kev ruaj khov thermal zoo heev thaum lub sijhawm extrusion kub siab, yog tus nqi tsim nyog rau kev tsim cov kav dej loj, thiab ua raws li cov cai ib puag ncig los ntawm kev zam cov tshuaj lom.
Xaus lus, ob qho tib si kua thiab hmoov PVC stabilizers yog qhov tseem ceeb rau kev txo qhov kev puas tsuaj ntawm PVC, tab sis lawv cov yam ntxwv sib txawv ua rau lawv zoo dua rau cov ntawv thov tshwj xeeb. Thaum xaiv lub stabilizer, siv txoj hauv kev holistic: pib los ntawm kev txhais koj cov qauv PVC thiab cov khoom kawg, tom qab ntawd soj ntsuam cov xwm txheej ua tiav, kev ua raws li txoj cai, thiab tag nrho cov nqi ntawm kev muaj. Los ntawm kev ua li ntawd, koj tuaj yeem xaiv lub stabilizer uas tsis tsuas yog tiv thaiv kev puas tsuaj ntawm PVC tab sis kuj tseem ua kom zoo dua qhov kev tsim khoom thiab kev ua haujlwm kawg ntawm cov khoom.
Lub sijhawm tshaj tawm: Lub Ib Hlis-26-2026