Cov Kev Siv Cov Khoom Siv PVC Stabilizers Uas Muaj Cov Hlau Lead Cov Zoo Thiab Cov Kev Txwv

Polyvinyl chloride nrhiav tau nws txoj hauv kev rau hauv ntau daim ntawv thov uas ua rau peb lub neej txhua hnub thiab kev ua haujlwm hauv kev lag luam. Txij li cov kav dej uas nqa dej mus rau peb lub tsev mus rau cov xov hlau uas xa hluav taws xob thiab cov ntaub ntawv, PVC qhov kev hloov pauv tsis muaj qhov sib piv. Txawm li cas los xij, cov polymer nrov no muaj qhov tsis zoo tseem ceeb: qhov tsis ruaj khov thermal. Thaum raug rau qhov kub siab uas xav tau rau kev ua tiav - xws li extrusion, txhaj tshuaj molding, lossis calendering - PVC pib lwj, tso tawm cov hydrogen chloride (HCl) uas ua rau puas tsuaj thiab ua rau cov khoom puas tsuaj. Qhov no yog qhov uas cov stabilizers nkag mus, thiab ntawm ntau txoj kev xaiv muaj, cov lead stabilizers tau ntev los ua lub hauv paus tseem ceeb hauv kev lag luam PVC. Cov qauv PVC stabilizer ua los ntawm lead tau khwv tau lawv qhov chaw los ntawm ntau xyoo ntawm kev ua tau zoo, txawm hais tias lawv kuj ntsib kev tshuaj xyuas ntau ntxiv hauv lub sijhawm ntawm kev paub txog ib puag ncig. Hauv cov blog no, peb yuav nkag mus rau hauv cov ntawv thov hauv ntiaj teb tiag tiag, cov txiaj ntsig tseem ceeb, thiab cov kev txwv tsis pub dhau ntawm cov stabilizers no, thaum tseem tshawb nrhiav seb cov thawj coj hauv kev lag luam tab tom taug kev hauv thaj chaw hloov pauv ntawm PVC stabilization.

Yuav kom nkag siab txog lub luag haujlwm ntawmcov hlau lead stabilizerHauv kev ua PVC, nws yog ib qho tseem ceeb kom nkag siab txog lawv cov haujlwm tseem ceeb. Ntawm qib tseem ceeb, cov tshuaj stabilizers ua haujlwm zoo li cov tshuaj HCl scavengers. Thaum PVC lwj hauv qab cua sov, cov tshuaj lead hauv cov tshuaj stabilizer react nrog HCl tso tawm los tsim cov tshuaj lead chlorides ruaj khov, tsis yaj hauv dej. Qhov kev tshuaj tiv thaiv no cuam tshuam lub voj voog autocatalytic decomposition, tiv thaiv kev tawg ntxiv ntawm cov saw polymer. Qhov ua rau cov tshuaj lead stabilizers sib txawv ntawm ntau txoj hauv kev yog lawv lub peev xwm los muab kev ruaj khov thermal ntev, tsis yog kev tiv thaiv luv luv thaum lub sijhawm ua tiav. Qhov kev ua tau zoo no ua rau lawv muaj txiaj ntsig tshwj xeeb rau cov ntawv thov uas cov khoom PVC xav tias yuav tiv taus cov xwm txheej ib puag ncig hnyav dhau lub neej ntev - feem ntau yog kaum xyoo. Tsis tas li ntawd, cov qauv ua los ntawm lead feem ntau muab kev sib xyaw ua ke ntawm kev tiv thaiv thermal thiab cov khoom siv lubricating, uas ua rau kev ua tiav yooj yim los ntawm kev txo qhov sib txhuam ntawm PVC cov khoom thiab ntawm cov polymer molten thiab cov tshuab ua haujlwm. Qhov kev ua haujlwm ob npaug no txhim kho kev ua haujlwm ntau lawm, ua kom ntseeg tau tias cov khoom zoo sib xws nrog lub sijhawm tsis ua haujlwm tsawg kawg nkaus.

Cov kev siv tau ntawm cov hlau leadPVC stabilizermuaj keeb kwm tob hauv cov lag luam uas kev ruaj khov, kev ntseeg siab, thiab kev siv nyiaj tsis tuaj yeem sib tham tau. Ib qho ntawm cov lag luam tseem ceeb tshaj plaws yog kev lag luam tsim kho, qhov twg cov kav dej PVC thiab cov khoom siv nyob txhua qhov chaw. Txawm hais tias siv rau kev muab dej haus, cov dej phwj tuaj, lossis cov dej hauv av, cov kav dej no yuav tsum tiv taus xeb, kev hloov pauv kub, thiab kev ntxhov siab rau ntau xyoo caum. Cov tshuaj txhuas ua lub luag haujlwm tseem ceeb hauv kev ua kom lub neej ntev no; lawv qhov kev ruaj khov thermal ntev zoo tiv thaiv kev puas tsuaj ntawm cov kav dej txawm tias raug dej kub lossis tshav ntuj ncaj qha. Piv txwv li, cov kav dej PVC ruaj khov nrog cov tshuaj txhuas ua rau lawv cov qauv ruaj khov thiab lub peev xwm siab ntev dua li cov uas siv cov tshuaj tsis ruaj khov. Qhov kev ntseeg siab no yog vim li cas ntau qhov project hauv paus, tshwj xeeb tshaj yog nyob rau hauv cov cheeb tsam uas muaj huab cua nyuaj, tau cia siab rau keeb kwmCov kav dej PVC uas ruaj khov.

Lwm qhov chaw siv tseem ceeb rau cov hlau lead stabilizer yog kev lag luam hluav taws xob thiab electronics, tshwj xeeb tshaj yog hauv cable thiab hlau rwb thaiv tsev. PVC yog siv dav rau kev rwb thaiv tsev cov cable fais fab, cov cable sib txuas lus, thiab cov xov hluav taws xob vim nws cov khoom rwb thaiv tsev zoo heev, tab sis cov khoom no tuaj yeem lwj sai yog tias cov khoom tsis tau ruaj khov zoo. Cov stabilizers ua los ntawm hlau lead zoo tshaj plaws ntawm no vim tias cov hlau lead chlorides tsim thaum lub sijhawm ruaj khov kuj yog cov insulators hluav taws xob zoo heev, ua kom ntseeg tau tias cov khoom rwb thaiv tsev ntawm cov cable tseem zoo li qub dhau sijhawm. Tsis tas li ntawd, cov stabilizers no muab kev tiv thaiv huab cua zoo dua, ua rau lawv zoo tagnrho rau cov ntawv thov cable sab nraum zoov qhov twg raug UV hluav taws xob, dej noo, thiab kub heev. Txij li cov kab hluav taws xob saum toj mus rau cov cables sib txuas lus hauv av, cov hlau lead-stabilized PVC rwb thaiv tsev ua kom muaj kev nyab xeeb thiab txhim khu kev qha kev xa hluav taws xob.TopJoy TshuajCov tshuaj stabilizer ua los ntawm cov hlau lead rau cov cables yog tsim los ua kom tau raws li cov qauv kev ua haujlwm hluav taws xob nruj, nrog rau qhov sib txawv tsawg kawg nkaus ua tsaug rau cov txheej txheem tsim khoom PLC tswj hwm siab heev. Qhov kev sib xws no yog qhov tseem ceeb rau cov tuam txhab tsim cable, uas tsis tuaj yeem them taus qhov kev hloov pauv uas yuav ua rau muaj kev nyab xeeb hluav taws xob.

Cov qauv qhov rai thiab qhov rooj yog lwm qhov kev siv tseem ceeb rau cov khoom siv PVC uas ua los ntawm cov hlau lead. Cov qauv PVC ruaj khov yog cov khoom siv uas nyiam siv hauv kev tsim kho vim lawv siv hluav taws xob tsawg, tsis tas yuav saib xyuas ntau, thiab tiv taus kev lwj thiab kab tsuag. Txawm li cas los xij, cov qauv no raug rau cov huab cua xws li hnub ci, nag, daus, thiab kub hloov pauv tas li uas xav tau kev tiv thaiv huab cua thiab xim zoo heev. Cov khoom siv ua los ntawm cov hlau lead muab kev tiv thaiv UV kom tiv thaiv kev hloov xim thiab kev tawg yooj yim, ua kom cov qauv no tseem zoo nkauj thiab ruaj khov rau lub neej ntawm lub tsev. Tsis tas li ntawd, lawv cov khoom siv lubricating pab txhawb kev tsim cov duab profile nyuaj nrog qhov loj me, uas yog qhov tseem ceeb rau kev ua kom haum thiab siv hluav taws xob zoo hauv kev teeb tsa qhov rai thiab qhov rooj. Txawm hais tias cov khoom siv stabilizer tshiab tau txais kev nyiam hauv qhov kev lag luam no, cov kev xaiv ua los ntawm cov hlau lead tseem muaj nyob hauv kev lag luam uas tus nqi thiab kev ua haujlwm ntev yog cov tsav tsheb tseem ceeb.

Cov txiaj ntsig ntawm cov khoom siv stabilizer PVC uas ua los ntawm cov hlau lead nthuav dav tshaj lawv cov kev ua tau zoo hauv cov ntawv thov tshwj xeeb; lawv kuj muab cov txiaj ntsig zoo rau kev lag luam thiab kev ua tiav. Kev siv nyiaj tsim nyog yog qhov zoo tshaj plaws. Cov khoom siv stabilizer uas ua los ntawm cov hlau lead muaj qhov sib piv ntawm kev ua tau zoo thiab tus nqi siab, xav tau cov tshuaj tsawg dua li ntau lwm cov khoom siv stabilizer kom ua tiav tib theem kev tiv thaiv. Qhov no txo ​​cov nqi khoom siv rau cov chaw tsim khoom, uas yog qhov tseem ceeb hauv kev lag luam uas muaj kev cuam tshuam nrog tus nqi xws li kev tsim kho thiab cov khoom siv hluav taws xob. Tsis tas li ntawd, lawv qhov sib xws nrog ntau yam PVC formulations - los ntawm rigid mus rau semi-rigid mus rau flexible - ua rau lawv yog cov kev daws teeb meem ntau yam, tshem tawm qhov xav tau ntau hom stabilizer thoob plaws ntau yam khoom. Qhov kev hloov pauv no ua rau kev tswj hwm cov khoom muag thiab cov txheej txheem tsim khoom yooj yim dua, txo cov nqi ua haujlwm ntxiv.

Lwm qhov zoo tseem ceeb ntawm cov hlau lead stabilizer yog lawv lub qhov rais ua haujlwm dav. Cov chaw tsim khoom PVC feem ntau ua haujlwm thoob plaws ntau qhov kub thiab qhov ceev ntawm kev ua haujlwm, thiab cov hlau lead stabilizers muab kev ua haujlwm zoo sib xws thoob plaws cov hloov pauv no. Lawv cov khoom siv lubricating txo qhov kev sib txhuam thaum lub sijhawm extrusion thiab molding, tiv thaiv kev tsim cov pwm thiab ua kom cov khoom du thiab sib xws. Qhov no tsis tsuas yog txhim kho cov khoom zoo xwb tab sis kuj ua rau muaj kev ua haujlwm ntau ntxiv los ntawm kev txo lub sijhawm tsis ua haujlwm rau kev ntxuav thiab kev saib xyuas tshuab. Rau cov chaw tsim khoom ua haujlwm nrog PVC rov ua dua tshiab,cov stabilizers uas ua los ntawm cov hlau leadmuaj txiaj ntsig tshwj xeeb vim lawv muaj peev xwm los ua kom cov saw hlau polymer uas lwj dua feem ntau pom muaj nyob rau hauv cov khoom siv rov ua dua tshiab ruaj khov. Qhov no txhawb nqa kev siv zog ntawm kev lag luam ncig los ntawm kev nthuav dav kev siv cov khib nyiab PVC, txawm hais tias nws tseem ceeb heev uas yuav tsum nco ntsoov tias cov kev txiav txim siab txog kev cai lij choj tseem siv tau rau cov khoom siv rov ua dua tshiab uas muaj cov hlau lead.

Txawm hais tias lawv lub luag haujlwm ntev thiab muaj txiaj ntsig zoo, cov khoom siv PVC uas muaj cov hlau lead ntsib cov kev txwv tsis pub dhau, feem ntau yog nyob ib puag ncig kev noj qab haus huv, kev txhawj xeeb txog ib puag ncig, thiab cov cai tswjfwm uas hloov zuj zus. Cov hlau lead yog cov hlau hnyav uas muaj tshuaj lom uas tuaj yeem sib sau ua ke hauv tib neeg lub cev thiab ib puag ncig, ua rau muaj kev pheej hmoo loj rau cov neeg ua haujlwm koom nrog kev ua PVC thiab cov neeg siv kawg yog tias cov khoom siv cov hlau lead tawm mus ntev. Qhov kev lom no tau ua rau muaj cov cai tswjfwm nruj heev rau kev siv cov khoom siv hlau lead hauv ntau thaj chaw. Piv txwv li, European Union cov lus qhia REACH thiab RoHS txwv tsis pub siv cov hlau lead hauv ntau daim ntawv thov PVC, tshwj xeeb tshaj yog cov uas cuam tshuam nrog kev sib cuag zaub mov, cov khoom siv kho mob, thiab cov khoom siv rau menyuam yaus. Cov cai zoo sib xws tau raug saws hauv North America, Nyiv Pooj, thiab lwm lub khw tsim khoom, txwv tsis pub siv cov khoom siv hlau lead hauv cov cheeb tsam no.

Lwm qhov kev txwv yog qhov teeb meem ntawm kev pleev xim rau cov sulfur. Cov tshuaj txhuas ua rau cov tshuaj sulfur muaj cov tshuaj sulfur, ua rau cov khoom PVC tsis zoo nkauj. Qhov no txwv tsis pub siv cov tshuaj stabilizers uas muaj cov hlau txhuas hauv cov ntawv thov uas cov xim sib xws yog qhov tseem ceeb, lossis qhov twg cov khoom yuav kov tau cov chaw muaj sulfur ntau - xws li qee qhov chaw ua haujlwm lossis cov ntawv thov sab nraum zoov ze ntawm cov chaw tsim hluav taws xob uas siv thee. Tsis tas li ntawd, cov tshuaj stabilizers uas muaj cov hlau txhuas tsis haum rau cov khoom PVC pob tshab, vim tias lawv feem ntau muab cov xim me ntsis, txwv tsis pub siv hauv cov ntawv thov xws li cov ntawv ntim khoom pob tshab lossis cov yeeb yaj kiab pob tshab.

Qhov cuam tshuam rau ib puag ncig ntawm cov tshuaj stabilizers uas muaj cov hlau lead txuas ntxiv mus rau lawv cov tshuaj lom. Kev khawb thiab ua cov hlau lead yog siv cov peev txheej ntau thiab ua rau ib puag ncig puas tsuaj, ua rau muaj kuab paug rau av thiab dej. Kev pov tseg cov khoom PVC uas muaj hlau lead kuj ua rau muaj kev cov nyom, vim tias kev pov tseg tsis raug tuaj yeem tso hlau lead rau hauv ib puag ncig. Cov kev txhawj xeeb txog ib puag ncig no tau tsav txoj kev tsim cov thev naus laus zis stabilizer lwm txoj hauv kev, xws liCov tshuaj stabilizers uas ua rau calcium-zinc (Ca-Zn), uas tsis muaj tshuaj lom thiab zoo rau ib puag ncig. Txawm hais tias cov kev xaiv no tau ua rau muaj kev nce qib tseem ceeb hauv kev ua tau zoo, lawv feem ntau tseem tuaj nrog cov nqi siab dua lossis cov qhov rai ua haujlwm nqaim dua piv rau cov stabilizers ua los ntawm cov hlau lead, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas xav tau kev ruaj khov thermal ntev.

Rau cov chaw tsim khoom uas tab tom nrhiav kev daws teeb meem nyuaj no, kev koom tes nrog tus neeg muag khoom stabilizer uas paub txog yog qhov tseem ceeb. Cov tuam txhab zoo li TopJoy Chemical lees paub ob qho kev xav tau ntawm kev lag luam: tswj kev ua tau zoo thiab kev siv nyiaj tsim nyog thaum ua raws li cov cai tswjfwm uas hloov pauv. Thaum TopJoy Chemical tau nthuav dav nws cov khoom lag luam kom suav nrog cov khoom siv Ca-Zn stabilizers ua tau zoo kom tau raws li qhov kev thov loj hlob rau cov kev daws teeb meem ib puag ncig, nws tseem txuas ntxiv muab cov khoom siv stabilizer zoo rau cov lag luam thiab cov ntawv thov uas lawv tseem ua raws li txoj cai thiab tsim nyog. Cov qauv no yog tsim los nrog kev nyab xeeb hauv siab, suav nrog cov hmoov av lossis cov ntawv flake uas tsis muaj plua plav los txo qis kev raug mob ntawm cov neeg ua haujlwm thaum lub sijhawm ua haujlwm - qhov kev txhim kho tseem ceeb dua li cov hmoov txhuas stabilizers ib txwm muaj. Tsis tas li ntawd, TopJoy Chemical cov txheej txheem tswj xyuas kom meej tias lawv cov khoom siv stabilizers ua tau raws li cov qauv kev lag luam nruj tshaj plaws rau kev sib xws thiab kev ua tau zoo, pab cov chaw tsim khoom zam cov teeb meem tsim khoom kim heev thiab xyuas kom meej tias muaj kev ua raws li txoj cai.

Saib mus tom ntej, lub luag haujlwm ntawm cov khoom siv ua los ntawm cov hlau lead PVC stabilizer yuav txuas ntxiv mus rau hauv cov lag luam tsim kho thaum cov cai nruj dua thiab lwm yam thev naus laus zis zoo dua. Txawm li cas los xij, hauv ntau lub lag luam tshiab uas cov cai tsis nruj thiab tus nqi yog qhov tseem ceeb, cov khoom siv ua los ntawm cov hlau lead stabilizers yuav tseem yog qhov kev xaiv zoo rau yav tom ntej. Rau cov lag luam no, cov neeg muab khoom zoo li TopJoy Chemical ua lub luag haujlwm tseem ceeb hauv kev muab cov kev daws teeb meem zoo thiab muaj kev nyab xeeb thaum qhia cov neeg siv khoom txog cov txiaj ntsig ntawm kev hloov mus rau lwm txoj hauv kev ruaj khov dua thaum cov cai hloov pauv.

Xaus lus, cov tshuaj stabilizers tau ua haujlwm hauv kev lag luam PVC tau ntau xyoo lawm, muab kev ruaj khov thermal ntev, kev siv nyiaj tsim nyog, thiab kev ua haujlwm tau zoo hauv cov ntawv thov tseem ceeb xws li cov kav dej tsim kho, cov xov hluav taws xob, thiab cov qhov rai profile. Lawv cov kev txwv - tsom mus rau kev lom, kev txwv kev cai, thiab kev cuam tshuam rau ib puag ncig - yog qhov tseem ceeb, tab sis lawv tsis txo lawv qhov kev cuam tshuam txuas ntxiv mus rau qee lub khw. Thaum kev lag luam txav mus rau kev coj ua kom ruaj khov dua, qhov kev tsom mus rau lwm txoj hauv kev stabilizer, tab sis cov tshuaj stabilizers raws li cov hlau lead yuav tseem yog ib feem tseem ceeb ntawm PVC toj roob hauv pes rau xyoo tom ntej. Los ntawm kev koom tes nrog tus neeg muag khoom zoo li TopJoy Chemical, cov chaw tsim khoom tuaj yeem nkag mus rau cov kev daws teeb meem stabilizer zoo rau lawv cov kev xav tau tshwj xeeb, txawm tias qhov ntawd txhais tau tias cov qauv ua tau zoo raws li cov hlau lead rau kev lag luam ua raws li lossis lwm txoj hauv kev zoo rau ib puag ncig rau cov cheeb tsam uas muaj cov cai ib puag ncig nruj. Thaum kawg, lub hom phiaj yog kom sib npaug kev ua tau zoo, tus nqi, thiab kev ruaj khov - qhov kev sib tw uas xav tau kev txawj ntse, kev tsim kho tshiab, thiab kev nkag siab tob txog ob qho tib si tam sim no thiab yav tom ntej kev lag luam xav tau.