Cov plag tsev vinyl thiab cov khoom siv PVC kho kom zoo nkauj tau dhau los ua cov khoom tseem ceeb hauv cov tsev niaj hnub no, ua tsaug rau lawv qhov ruaj khov, kev hloov pauv tau yooj yim, thiab kev siv nyiaj tsawg. Txij li SPC (Pob Zeb Yas Composite) cov plag tsev mus rau cov pwm kho kom zoo nkauj, cov vaj huam sib luag phab ntsa, thiab cov ntug trims, cov khoom no vam khom rau cov txheej txheem txhaj tshuaj kom raug kom ua tiav qhov zoo sib xws. Hauv plawv ntawm cov txheej txheem no muaj ib qho tseem ceeb uas feem ntau tsis quav ntsej txog thaum muaj teeb meem tshwm sim: PVC stabilizers rau kev txhaj tshuaj.
Kev txhaj tshuaj molding ntawm PVC rau hauv pem teb thiab cov ntawv thov kho kom zoo nkauj xav tau qhov sib npaug zoo - cov ntaub ntawv yuav tsum tiv taus qhov kub siab ua haujlwm (160–200 ℃) yam tsis muaj kev puas tsuaj, tswj kev zoo nkauj (xim sib xws, nto du), thiab ua tau raws li cov qauv ib puag ncig nruj. Kev xaiv cov stabilizer subpar tuaj yeem ua rau muaj qhov tsis zoo kim: cov ntoo daj, qhov chaw "tawg," cov npoo tawg, lossis txawm tias cov kab ntau lawm kaw. Cov blog no rhuav tshem yuav ua li cas xaiv, siv, thiab ua kom zoo dua PVC stabilizers rau kev txhaj tshuaj molding hauvpem teb yasthiab cov haujlwm kho kom zoo nkauj, daws cov teeb meem hauv ntiaj teb tiag tiag uas cov tuam ntxhab thiab cov neeg tsim khoom ntsib.
Vim li cas kev txhaj tshuaj molding PVC rau pem teb thiab kho kom zoo nkauj xav tau cov khoom siv tshwj xeeb
PVC qhov tsis ruaj khov nyob rau hauv tshav kub thiab shear ua rau cov stabilizers tsis sib haum rau kev txhaj tshuaj molding. Tsis zoo li cov txheej txheem extrusion, kev txhaj tshuaj molding ua rau PVC raug kub sai, siab siab, thiab lub sijhawm luv luv nyob hauv lub thoob - cov xwm txheej uas ua rau dehydrochlorination (HCl tso tawm) thiab molecular saw tawg. Rau cov vinyl pem teb thiab cov khoom dai kom zoo nkauj, cov kev pheej hmoo siab dua:
Kev Zoo Nkaujkev ua kom raugCov ntoo hauv pem teb thiab cov khoom dai kom zoo nkauj yuav tsum muaj xim zoo ib yam, ci ntsa iab, thiab du ntawm qhov chaw. Txawm tias me ntsis xim tsis zoo lossis tawg paj los kuj ua rau muag tsis tau.
Kev ua kom lub cev muaj zogCov plag tsev yuav tsum tiv taus kev taug kev, thaum cov pwm kho kom zoo nkauj yuav tsum tiv taus kev cuam tshuam. Cov khoom ruaj khov cuam tshuam rau PVC lub zog yaj thiab cov khoom tensile kawg.
Kev ua raws li ib puag ncigCov cai thoob ntiaj teb (EU REACH, US FDA) txwv tsis pub siv cov hlau hnyav xws li txhuas thiab cadmium hauv cov khoom siv rau cov neeg siv khoom, thawb kev lag luam mus rau lwm txoj hauv kev uas tsis ua rau ib puag ncig puas tsuaj.
Rau cov khoom siv hauv pem teb vinyl uas raug txhaj tshuaj pwm—xws li cov pob qij txha sib txuas, cov ntug profiles, lossis cov inlays kho kom zoo nkauj—cov stabilizers yuav tsum tsis yog tsuas yog tiv thaiv kev puas tsuaj los ntawm cua sov xwb tab sis kuj txhim kho kev ua haujlwm. Cov stabilizers tsis sib xws ua rau muaj teeb meem xws li kev tawg ntawm cov yaj, kev tsim cov pwm, lossis qhov loj me tsis sib xws—tag nrho cov no ua rau muaj kev pov tseg ntau ntxiv.
Kev daws teeb meem sib xwsPVC StabilizerCov Teeb Meem Hauv Kev Txhaj Tshuaj Molding
Txawm tias muaj hom stabilizer zoo los xij, cov chaw tsim khoom feem ntau ntsib teeb meem kev siv uas ua rau cov khoom tsis zoo. Hauv qab no yog cov kev daws teeb meem uas siv tau rau cov teeb meem feem ntau ntsib hauv pem teb vinyl thiab kev txhaj tshuaj kho kom zoo nkauj:
1. Kev puas tsuaj los ntawm cua sov (Daj, Hnov tsw hlawv)
Teeb meemCov npoo pem teb lossis cov khoom dai kom zoo nkauj tig daj/xim av thaum lub sijhawm molding; cov khoom siv tso tawm cov ntxhiab tsw HCl. Qhov no tshwm sim thaum cov stabilizers tsis ua rau HCl tsis muaj zog lossis tiv taus qhov kub thiab txias.
Ua rauTsis txaus cov tshuaj stabilizer, cov tshuaj stabilizer tsis zoo uas muaj cov khoom xyaw tsis muaj zog, lossis qhov kub ua haujlwm tshaj qhov stabilizer ntau. Rau cov ntoo hauv pem teb tuab, cua sov hauv pwm ua rau puas tsuaj ntau dua.
Cov Kev Daws Teeb Meem:
- Nce cov tshuaj stabilizer kom ntau ntxiv los ntawm 0.5–1 phr (qhov chaw ib puas resin) rau cov khoom uas muaj phab ntsa tuab; siv cov tshuaj sib xyaw ua ke nrog cov tshuaj synergists (piv txwv li, roj taum pauv epoxidized) los txhawb kev ua haujlwm thermal.
- Txo qhov kub ntawm lub thoob los ntawm 5–10 ℃ thiab txo qhov ceev ntawm lub hau kom luv lub sijhawm nyob.
- Hloov mus rau qhov ua tau zoo Ca-Zn lossis cov organic tin stabilizer nrog kev ua tau zoo ntawm 180–190 ℃.
2. Paj Nto (Dawb Frosting)
Teeb meem: Ib zaj duab xis dawb, zoo li hmoov av tsim rau ntawm qhov chaw ntawm cov plag tsev txhaj tshuaj lossis cov khoom siv, ua rau puas tsuaj rau qhov zoo nkauj thiab kev nplaum.
Ua rauCov tshuaj stabilizer thiab PVC resin tsis sib haum, lossis cov roj nplua nyeem uas tsis muaj molecular ntau dhau hauv cov tshuaj stabilizer. Qhov no feem ntau tshwm sim nrog cov tshuaj stabilizer Ca-Zn tsis zoo.
Cov Kev Daws Teeb Meem: – Xaiv cov stabilizer uas muaj cov khoom me me uas hloov kho rau saum npoo kom txhim kho PVC dispersion; tsis txhob siv cov stabilizer uas muaj cov stearic acid ntau.
- Ua ntej muab cov stabilizers rau hauv masterbatch nrog PVC resin ua ntej molding kom ntseeg tau tias muaj kev faib tawm zoo ib yam.
- Txo cov tshuaj stabilizer thiab hloov cov roj nplua nyeem uas yaj tsawg nrog cov tshuaj uas muaj molecular hnyav dua.
3. Cov dej yaj tsis zoo (Kev sau tsis tiav, Kev tawg ntawm cov khoom yaj)
Teeb meem: Cov pob qij txha hauv pem teb uas txhaj tshuaj lossis cov qauv kho kom zoo nkauj tsis tiav; cov nplaim qhia txog cov ripples lossis cov qauv tsis sib npaug vim tias lub zog yaj tsis zoo.
Ua rauCov khoom ruaj khov uas ua rau cov yaj viscosity nce ntxiv, lossis tsis txaus lubrication hauv lub stabilizer system. Cov khoom ruaj khov hauv av tsawg feem ntau yuav muaj qhov teeb meem no thaum muaj kev thauj khoom ntau.
Cov Kev Daws Teeb Meem:
- Xaiv ib qhoCa-Zn stabilizeroptimized rau kev ntws - nrhiav cov mis nrog tswj qhov loj me ntawm cov khoom me me thiab cov khoom ua kom yas nrawm.
- Ntxiv 0.3–0.5 phr ntawm cov roj nplua nyeem sab nraud (piv txwv li, polyethylene wax) kom txhim kho cov dej yaj yam tsis muaj kev cuam tshuam rau kev ruaj khov.
- Kho qhov kub ntawm pwm (nce ntxiv 10–15 ℃) kom txo qhov tsis kam yaj thaum lub sijhawm sau.
4. Kev Tsis Ua Raws Cai
Teeb meemCov khoom tsis dhau qhov kev sim hlau hnyav (lead, cadmium) lossis tshaj qhov txwv kev nkag mus rau hauv zaub mov lossis cov khoom dai kom zoo nkauj rau menyuam yaus.
Ua rauSiv cov tshuaj stabilizers ntsev txhuas qub lossis cov tshuaj stabilizers Ca-Zn qib qis uas muaj cov hlau hnyav.
Cov Kev Daws Teeb Meem: – Nrhiav cov tshuaj stabilizer los ntawm cov neeg muag khoom uas muaj daim ntawv pov thawj sab nraud (REACH, FDA) lees paub tias tsis muaj tshuaj lom.
- Muab cov qauv Ca-Zn uas tsis muaj hlau hnyav tso ua ntej - cov chaw tsim khoom muaj koob npe muab cov ntawv qhia txog kev sim tshwj xeeb rau ntau pawg.
- Tsis txhob sib tov cov hom stabilizer; cov khoom seem uas muaj cov hlau lead ua rau cov khoom siv puas tsuaj.
Xaiv cov PVC Stabilizers rau Kev Txhaj Tshuaj Molding
Kev xaiv lub stabilizer zoo tsis yog kev kwv yees xwb—nws yuav tsum tau ua kom haum rau cov khoom xav tau, cov xwm txheej ua haujlwm, thiab cov kev cai lij choj. Ua raws li cov qauv no rau kev txiav txim siab ntseeg siab:
Txhais Cov Khoom Tseem Ceeb
Pib los ntawm kev txheeb xyuas cov khoom uas tsis tuaj yeem sib tham tau: Kev Zoo Nkauj: Koj puas xav tau pob tshab (piv txwv li, cov vaj huam sib luag kho kom zoo nkauj) lossis dawb tas li (SPC pem teb)? Cov hlau organic lossis cov khoom siv Ca-Zn uas muaj cov khoom huv siab ua haujlwm zoo tshaj plaws.
Ib puag ncig siv kawg: Cov khoom puas yuav raug UV (kho kom zoo nkauj sab nraum zoov) lossis hnav hnyav (hauv pem teb)? Cov khoom siv tsis tshua muaj av lossis cov khoom siv Ca-Zn uas ua kom UV zoo dua.
Cov Cai: Cov lag luam uas xav tau (EU, Tebchaws Meskas, Asia) muaj cov qauv sib txawv - xyuas kom ua raws li qhov yuav tsum tau ua ua ntej kom tsis txhob rov ua dua.
Sib phim Stabilizer rau Cov Xwm Txheej Ua Haujlwm
Cov txheej txheem txhaj tshuaj molding qhia txog kev ua haujlwm ntawm stabilizer: Kub: Kev txhaj tshuaj kub siab (≥190 ℃) xav tau cov organic tin lossis cov Ca-Zn siab heev nrog cov synergists.
Lub sijhawm voj voog: Cov voj voog ceev xav tau cov stabilizers nrog cov yas ceev (piv txwv li, qis-viscosity Ca-Zn) kom tsis txhob under-molding.
Hom khoom siv: Cov tshuab ntsia hlau ob-txheej siab xav tau cov khoom ruaj khov nrog kev sib kis zoo kom tiv thaiv kev puas tsuaj ntawm shear.
Kev Ntsuas Kev Sib Haum Xeeb & Kev Ua Tau Zoo
Tsis txhob hla dhau qhov kev sim me me. Ua qhov kev sim los ntsuam xyuas: Kev ruaj khov ntawm kev ua haujlwm: Xyuas seb puas muaj xim tsis zoo, cov pwm tso rau hauv, thiab qhov sib xws ntawm cov khoom sau.
Cov khoom kawg: Sim lub zog tensile, kev cuam tshuam tsis kam, thiab qhov zoo ntawm qhov chaw (gloss, bloom).
Kev ruaj khov mus ntev: Ua qhov kev sim laus ntawm cua sov (70 ℃ rau 72 teev) kom ntseeg tau tias xim thiab lub zog khaws cia - qhov tseem ceeb rau hauv pem teb.
Tus Nqi thiab Tus Nqi Sib Npaug
Txawm hais tias cov organic tin muaj kev ua tau zoo dua, Ca-Zn stabilizers txo cov nqi los ntawm 30-40% rau cov khoom tsis pob tshab. Xam tag nrho cov nqi ntawm kev muaj: ib qho me ntsis kim dua Ca-Zn stabilizer ua haujlwm siab tuaj yeem txo cov nqi pov tseg (los ntawm kev txo cov qhov tsis zoo) ntau dua li lwm txoj hauv kev pheej yig, kev ua haujlwm qis.
Hauv cov plag tsev vinyl thiab cov khoom siv txhaj tshuaj kho kom zoo nkauj, cov tshuaj stabilizer PVC tsis yog tsuas yog cov khoom siv ntxiv xwb - lawv yog cov tsav tsheb ntawm qhov zoo, kev ua haujlwm zoo, thiab kev ua raws li txoj cai. Kev txiav cov ces kaum ntawm cov tshuaj stabilizer ua rau muaj qhov tsis zoo kim thiab kev pheej hmoo ntawm kev cai lij choj, thaum kev nqis peev rau hauv cov mis zoo ua rau muaj kev sib xws ntawm kev tsim khoom thiab lub neej ntev ntawm cov khoom.
Los ntawm kev muab qhov tseem ceeb rau kev sib raug zoo nrog koj cov xwm txheej ua haujlwm, ua raws li cov qauv kev cai lij choj, thiab kev sim ua kom zoo, koj tuaj yeem tig kev xaiv stabilizer mus rau hauv qhov zoo dua. Rau feem ntau daim ntawv thov, optimizedCov tshuaj stabilizers Ca-Zn sib xyaw ua kemuab qhov sib npaug zoo tshaj plaws - tab sis tsis txhob yig hloov kho mus rau cov organic tin lossis cov khoom siv av tsawg rau cov khoom zoo lossis cov khoom tshwj xeeb.
Nco ntsoov: Tus stabilizer zoo tshaj plaws tsis yog tus kim tshaj plaws lossis tus nrov tshaj plaws - nws yog tus uas tau tsim los rau koj cov khoom xav tau tshwj xeeb. Yog tias koj ua raws li txoj hauv kev zoo, koj yuav zam tau qhov teeb meem uas tshwm sim thiab xa cov khoom siv vinyl txhaj tshuaj thiab cov khoom dai kom zoo nkauj uas sawv tawm hauv kev ua lag luam uas muaj neeg coob coob.
Lub sijhawm tshaj tawm: Lub Ob Hlis-03-2026