Kev tsim cov tawv nqaij polyvinyl chloride (PVC) yog ib qho txheej txheem nyuaj uas xav tau kev ruaj khov thermal thiab kev ua haujlwm ntev ntawm cov khoom siv. PVC yog ib qho thermoplastic siv dav dav uas paub txog nws qhov kev ua tau zoo, tab sis nws tsis ruaj khov ntawm qhov kub siab, ua rau yuav tsum siv cov stabilizers. Potassium-zinc stabilizers tau tshwm sim los ua ib qho kev hloov tshiab tseem ceeb hauv daim teb no, muab ntau qhov zoo dua li cov stabilizers ib txwm muaj. Cov stabilizers no muaj txiaj ntsig tshwj xeeb hauv kev lag luam tawv nqaij PVC vim lawv cov khoom zoo heev rau kev ruaj khov cua sov thiab cov txiaj ntsig ib puag ncig.
Cov yam ntxwv thiab cov khoom ntawm Potassium-Zinc Stabilizers
Cov tshuaj stabilizers Potassium-zinc, tseem hu uaCov tshuaj stabilizer K-Zn, yog kev sib xyaw ua ke ntawm cov potassium thiab zinc sib xyaw ua ke uas tsim los txhim kho qhov ruaj khov ntawm PVC. Cov stabilizers no hloov cov stabilizers uas muaj cov hlau lead, uas feem ntau tau raug tshem tawm vim muaj kev txhawj xeeb txog ib puag ncig thiab kev noj qab haus huv. Cov khoom tseem ceeb ntawmcov tshuaj stabilizers potassium-zincsuav nrog kev ruaj khov kub zoo heev, kev pom tseeb zoo dua, thiab kev sib raug zoo nrog ntau yam PVC formulations.
* Kev Ruaj Ntseg Thermal:Cov tshuaj stabilizers Potassium-zinc muaj txiaj ntsig zoo rau kev tiv thaiv kev puas tsuaj ntawm PVC ntawm qhov kub siab. Thaum lub sijhawm ua cov tawv nqaij cuav PVC, cov khoom siv raug cua sov ntau, uas tuaj yeem ua rau cov saw hlau polymer tawg, ua rau muaj kev hloov pauv, poob cov khoom siv lub cev, thiab tso tawm hydrochloric acid (HCl). Cov tshuaj stabilizers Potassium-zinc pab tswj kev ncaj ncees ntawm cov saw hlau PVC polymer, xyuas kom meej tias cov khoom siv khaws nws cov khoom txawm tias nyob hauv qhov kub ntev.
* Kev Pom Tseeb thiab Kev Tuav Xim:Cov tshuaj stabilizers no pab txhawb rau kev tsim cov khoom PVC uas pom tseeb thiab ci ntsa iab. Lawv tiv thaiv kev daj thiab lwm yam kev hloov pauv, ua kom ntseeg tau tias cov khoom tawv cuav kawg tseem khaws lawv qhov zoo nkauj. Qhov no yog qhov tseem ceeb tshwj xeeb hauv kev lag luam zam thiab tsheb, qhov twg cov tawv cuav zoo li cas yog qhov tseem ceeb rau qhov zoo.
* Kev Nyab Xeeb Ib puag ncig:Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm cov tshuaj potassium-zinc stabilizers yog lawv txoj kev phooj ywg ib puag ncig. Tsis zoo li cov tshuaj stabilizers uas muaj cov hlau lead, cov tshuaj potassium-zinc stabilizers tsis tso cov tshuaj lom thaum lub sijhawm ua lossis pov tseg. Qhov no ua rau lawv yog qhov kev xaiv zoo dua rau cov chaw tsim khoom thiab cov neeg siv kawg, ua raws li qhov kev thov nce ntxiv rau cov khoom siv ruaj khov thiab tsis muaj tshuaj lom hauv ntau yam lag luam.
Cov Txheej Txheem Thov
Kev sib xyaw cov potassium-zinc stabilizers rau hauv PVC formulations muaj ntau kauj ruam, feem ntau tshwm sim thaum lub sijhawm sib xyaw. Cov stabilizers no tuaj yeem sib xyaw los ntawm ntau txoj kev, suav nrog kev sib xyaw qhuav, extrusion, thiab kev txhaj tshuaj molding.
1. Kev Sib Xyaws Qhuav:Hauv kev sib xyaw qhuav, cov tshuaj potassium-zinc stabilizers raug sib xyaw nrog PVC resin thiab lwm yam khoom ntxiv rau hauv lub tshuab sib tov ceev ceev. Cov khoom sib tov no tom qab ntawd raug rau qhov kub siab thiab lub zog shear kom ntseeg tau tias muaj kev faib tawm ntawm cov stabilizers thoob plaws hauv PVC matrix. Cov txheej txheem no yog qhov tseem ceeb rau kev ua tiav kev ruaj khov sib xws thoob plaws tag nrho cov khoom siv PVC.
2. Kev rho tawm:Thaum lub sijhawm extrusion, cov khoom sib xyaw PVC qhuav sib xyaw raug pub rau hauv lub tshuab extruder, qhov chaw uas nws yaj thiab homogenized. Cov stabilizers ua kom ntseeg tau tias cov khoom siv PVC tseem ruaj khov thiab tsis lwj hauv qab qhov kub thiab txias siab thiab kev ntxhov siab uas koom nrog hauv extrusion. Cov PVC extruded ces raug tsim ua cov ntawv lossis cov yeeb yaj kiab, uas tom qab ntawd siv rau hauv kev tsim cov tawv nqaij cuav.
3. Kev Txhaj Tshuaj Molding:Rau cov ntawv thov uas xav tau cov duab thiab cov qauv tsim kom ntxaws, kev txhaj tshuaj molding yog siv. Cov tshuaj PVC, uas muaj cov potassium-zinc stabilizers, raug txhaj rau hauv qhov pwm qhov uas nws txias thiab khov mus rau hauv cov duab xav tau. Cov stabilizers ua lub luag haujlwm tseem ceeb hauv kev tswj hwm qhov kub thiab txias thaum lub sijhawm no, tiv thaiv kev puas tsuaj hauv cov khoom kawg.
Vim li cas Potassium-Zinc Stabilizers thiaj hu ua "Kickers"
Lo lus "kicker" hauv cov ntsiab lus ntawm potassium-zinc stabilizers pib los ntawm lawv lub peev xwm los ua kom cov txheej txheem gelation ntawm PVC plastisols thaum lub sijhawm cua sov. Hauv kev tsim cov tawv nqaij cuav PVC, kev ua tiav qhov xav tau gelation thiab fusion ntawm PVC plastisol yog qhov tseem ceeb. Potassium-zinc stabilizers ua haujlwm ua kickers los ntawm kev txo qis lub zog ua kom muaj zog rau gelation, yog li ua kom tag nrho cov txheej txheem sai dua. Qhov kev ua kom nrawm dua no muaj txiaj ntsig vim tias nws ua rau cov voj voog tsim khoom sai dua thiab cov txheej txheem tsim khoom zoo dua.
Cov Zoo thiab Kev Ua Tau Zoo
Cov tshuaj stabilizers Potassium-zinc muaj ntau yam zoo hauv kev tsim cov tawv cuav PVC. Cov no suav nrog:
* Kev Ruaj Ntseg Thermal Zoo Dua:Cov stabilizers no muab kev ruaj khov kub zoo dua piv rau cov stabilizers ib txwm muaj, ua kom ntseeg tau tias cov ntaub ntawv PVC tuaj yeem tiv taus qhov kub siab ua haujlwm yam tsis muaj kev puas tsuaj. Qhov no tseem ceeb heev hauv kev lag luam tawv dag, qhov twg PVC daim ntawv thiab cov yeeb yaj kiab raug cua sov thaum lub sijhawm xws li embossing thiab laminating.
* Kev Zoo ntawm Khoom:Los ntawm kev tiv thaiv kev puas tsuaj thiab kev hloov xim, cov tshuaj potassium-zinc stabilizers pab tsim cov tawv nqaij PVC zoo dua nrog tsawg qhov tsis zoo. Qhov no ua rau cov khoom lag luam ruaj khov thiab txhim khu kev qha dua, uas yog qhov tseem ceeb rau kev ua tau raws li cov qauv kev lag luam thiab kev cia siab ntawm cov neeg siv khoom.
* Kev Ua Raws Cai Ib puag ncig:Kev siv cov tshuaj potassium-zinc stabilizers ua raws li kev cai lij choj thiab kev thov ntawm cov neeg siv khoom rau cov khoom siv uas tsis ua rau ib puag ncig puas tsuaj. Cov tshuaj stabilizers no tsis tso cov tshuaj lom neeg tawm, ua rau cov txheej txheem tsim khoom muaj kev nyab xeeb dua thiab ruaj khov dua.
* Kev Ua Haujlwm Zoo:Kev siv cov tshuaj potassium-zinc stabilizers tuaj yeem txhim kho kev ua haujlwm zoo los ntawm kev txo qhov yuav muaj qhov tsis zoo xws li fisheyes, gels, thiab black specks. Qhov no ua rau muaj txiaj ntsig zoo dua thiab txo cov nqi tsim khoom, pab txhawb rau kev lag luam tag nrho ntawm cov txheej txheem tsim khoom.
Kev siv cov potassium-zinc stabilizers hauv kev lag luam khoom noj khoom hausPVC tawv cuavkev lag luam sawv cev rau kev nce qib tseem ceeb hauv kev siv tshuab ua kom ruaj khov. Cov stabilizers no muab qhov tsim nyog thermal stability, pob tshab, thiab kev nyab xeeb ib puag ncig uas xav tau rau kev tsim cov khoom tawv cuav zoo. Raws li kev lag luam txuas ntxiv qhov tseem ceeb rau kev ruaj khov thiab kev nyab xeeb, potassium-zinc stabilizers tau npaj siab los ua lub luag haujlwm tseem ceeb hauv yav tom ntej ntawm PVC tawv cuav tsim khoom.
Lub sijhawm tshaj tawm: Lub Rau Hli-25-2024