Polyvinyl chloride (PVC) additives yog ib qho tseem ceeb ntawm cov txheej txheem PVC, thiab lawv qhov zoo cuam tshuam ncaj qha rau kev ua tau zoo, kev ua haujlwm ruaj khov, thiab kev nyab xeeb ntawm qhov kawg - siv cov khoom. Vim muaj ntau yam additives, lawv muaj ntau yam kev ua haujlwm, thiab lawv qhov kev cuam tshuam rau cov khoom siv raw, txheej txheem, thiab ib puag ncig, tsim kom muaj kev tswj hwm zoo thiab nruj tau dhau los ua qhov kev xaiv tseem ceeb rau cov tuam txhab tsim khoom kom ntseeg tau cov khoom sib xws, txhim kho kev lag luam kev sib tw, thiab ua tau raws li kev cai tswj hwm.
Thawj qhov txuas hauv kev tswj xyuas qhov zoo yog nyob rau hauv kev tshuaj xyuas tuaj thiab kev tswj xyuas cov ntaub ntawv raw. Cov khoom siv raw siv nyob rau hauv ntau hom additives xws li hlau tebchaw, fatty acids thiab lawv derivatives, polymer emulsions, organic solvents, thiab ntau yam functional monomers. Lawv purity, noo noo, impurity cov ntsiab lus, thiab lub cev daim ntawv muaj ib tug txiav txim siab cuam tshuam rau lub tom ntej synthesis los yog compounding los. Raws li tus neeg muag khoom tsim nyog tshuaj xyuas, batch sampling testing, thiab tsom xam cov ntsiab lus tseem ceeb (xws li cov ntsiab lus hlau, acid tus nqi, melting point, viscosity, thiab volatile teeb meem), yuav tsum tau tsim ib tug raw cov ntaub ntawv zoo, thiab batch traceability yuav tsum tau tiav. Rau cov additives koom nrog hauv kev sib cuag zaub mov, kev kho mob, lossis cov khoom siv me nyuam yaus, yuav tsum tau kuaj ntxiv rau cov tshuaj muaj kev phom sij tshwj xeeb kom ntseeg tau tias muaj kev nyab xeeb. Thaum lub sij hawm tsim khoom, kev saib xyuas thiab sau cov txheej txheem tseem ceeb ntawm cov txheej txheem yog qhov tseem ceeb ntawm cov txheej txheem tswj kom zoo. Rau cov khoom siv hluavtaws, xws li hlau xab npum thaum tshav kub kub stabilizers los yog tej yam yas, cov tshuaj tiv thaiv kub, siab, pH nqi, catalyst npaum li cas, thiab cov tshuaj tiv thaiv lub sij hawm yuav tsum nruj me ntsis tswj kom tsis txhob muaj kev cuam tshuam sab uas yuav ua rau darkening ntawm cov xim, txo yield, los yog kev ua tau zoo sib txawv. Tiag -sijhawm cov ntaub ntawv tau txais thiab kev tswj xyuas cov txheej txheem kev txheeb cais (SPC) tuaj yeem txheeb xyuas qhov kub thiab txias, hloov pauv tus nqi, thiab kev siv hluav taws xob tam sim, txheeb xyuas thiab kho qhov tsis txaus ntseeg. Cov txheej txheem sib xyaw thiab kev sib cais yuav tsum tau saib xyuas qhov sib xyaw ua ke, nplawm tus nqi, qhov kawg ntawm qhov ntsuas kub, thiab lub sijhawm kom ntseeg tau tias muaj kev sib cais ntawm txhua yam khoom, tsis muaj kev sib cais lossis kev sib cais, thiab kev soj ntsuam tsis tu ncua ntawm particle loj tis, bulk ntom, thiab flowability.
Kev tshuaj xyuas cov khoom tiav tiav yog qhov kawg ntawm kev thaiv kom paub tseeb tias cov additives ua tau raws li daim ntawv thov. Cov khoom soj ntsuam yuav tsum npog cov tsos, xim, purity, active ingredient cov ntsiab lus, thermal stability, volatile teeb meem, cov ntsiab lus tshauv, particle loj tis, thiab tej functionality indicators as (xws li fluorescence efficiency, tej yam hloov kho nyhuv, nplaim retardancy ntsuam xyuas, thiab lwm yam). Rau ntau hom kev tsiv teb tsaws lossis nag lossis daus, qhov nyiaj tsiv teb tsaws chaw, hnyav hnyav, thiab kev ntsuas huab cua kuj tseem yuav tsum tau. Cov kev xeem yuav tsum tau ua raws li cov qauv hauv tebchaws, cov qauv kev lag luam, lossis cov tuam txhab tshwj xeeb hauv tuam txhab, thiab cov cuab yeej yuav tsum raug ntsuas thiab cov txheej txheem raug siv tsis tu ncua kom ntseeg tau cov ntaub ntawv raug thiab sib piv.
Kev tswj kom zoo hauv kev ntim khoom, kev sau ntawv, thiab kev khaws cia / kev thauj mus los yog qhov tseem ceeb sib npaug. Cov ntaub ntawv ntim khoom yuav tsum yog noo noo- pov thawj, lub teeb- pov thawj, tiv thaiv - zoo li qub, thiab tawg- pov thawj los tiv thaiv kev ua tau zoo ntxiv degradation lossis paug vim yog ib puag ncig. Cov ntawv sau yuav tsum qhia meej txog cov khoom npe, qauv, tus lej batch, hnub tsim khoom, hnub tas sij hawm, cov cim tseem ceeb, thiab cov lus ceeb toom kev nyab xeeb kom yooj yim traceability thiab siv nyab xeeb. Cov chaw cia khoom yuav tsum tswj qhov kub, av noo, thiab lub teeb raug; siab- cov khoom pheej hmoo lossis cov khoom siv rov ua dua yuav tsum tau muab khaws cia rau hauv thaj chaw uas muaj kev cais tawm los tiv thaiv kev sib kis -kev sib kis thiab kev tshwm sim tsis zoo.
Lwm qhov tseem ceeb ntawm kev tswj kom zoo yog kev txhim kho txuas ntxiv thiab kev tswj hwm kev pheej hmoo. Yuav tsum tsim ib qho uas tsis yog - cov txheej txheem tuav cov khoom lag luam yuav tsum tau tsim, suav nrog hauv paus ua rau kev tshuaj xyuas, txheej txheem rov qab tsom xam, thiab txhim kho kev kho thiab tiv thaiv kev ntsuas rau cov khoom siv nrog kev kuaj tsis zoo. Kev tshuaj xyuas sab hauv thiab kev tswj xyuas tsis tu ncua yuav tsum tau ua los ntsuas qhov tsim nyog, tsim nyog, thiab kev ua tau zoo ntawm kev tswj xyuas qhov zoo. Rau cov teeb meem zoo tau tshaj tawm los ntawm cov neeg siv khoom thiab tau ntsib hauv daim ntawv thov, hla- kev tshuaj ntsuam xyuas kev ua haujlwm yuav tsum tau teeb tsa los tsim kev kaw- txoj kev txhim kho lub voj voog thiab tiv thaiv kev rov tshwm sim ntawm cov teeb meem zoo sib xws. Tsis tas li ntawd, nws yog ib qho tsim nyog yuav tsum tau ua tib zoo saib xyuas cov kev hloov tshiab rau cov kev cai thiab cov qauv, thiab kho cov khoom kuaj thiab tswj cov kev txwv raws sij hawm los xyuas kom meej tias cov khoom tsis tu ncua raws li cov kev xav tau ntawm kev lag luam.
Zuag qhia tag nrho, kev tswj xyuas zoo ntawm PVC additives yog ib qho kev ua haujlwm zoo tshaj plaws uas npog tag nrho cov saw hlau, los ntawm cov khoom siv raw, cov txheej txheem tsim khoom, kev tshuaj xyuas cov khoom tiav, kev khaws cia thiab kev thauj mus los, kev txhim kho tas mus li. Los ntawm cov txheej txheem kev tshawb fawb nruj, cov txheej txheem kev ua haujlwm, thiab cov txheej txheem kev tswj xyuas kom zoo, qhov sib xws thiab kev ntseeg tau ntawm cov khoom ua tau zoo tuaj yeem lav tau zoo, kev tsim khoom thiab kev siv cov kev pheej hmoo tuaj yeem raug txo qis, cov kev sib tw tseem ceeb ntawm cov tuam txhab hauv siab - tus qauv, nruj kev lag luam ib puag ncig tuaj yeem txhim kho, thiab kev txhawb nqa khoom tuaj yeem muab rau kev lag luam ntsuab 2} thiab kev loj hlob ntawm PVC.