Calcium zinc stabilizeryog ib qho tseem ceeb hauv kev tsim cov khoom PVC (polyvinyl chloride). PVC yog ib hom yas nrov siv rau ntau yam kev siv, los ntawm cov ntaub ntawv siv hauv kev tsim kho mus rau cov khoom siv rau cov neeg siv khoom. Txhawm rau kom ntseeg tau tias PVC ua haujlwm tau ntev thiab ua haujlwm tau ntev, cov tshuaj stabilizer kub raug ntxiv rau cov khoom thaum lub sijhawm tsim khoom. Ib qho tshuaj stabilizer kub feem ntau siv hauv kev tsim khoom PVC yog calcium zinc stabilizer.
Cov tshuaj calcium zinc stabilizers siv los tiv thaiv PVC kom tsis txhob lwj thaum kub siab. Lawv ua haujlwm los ntawm kev sib xyaw nrog cov chlorine atoms hauv PVC, uas pab tiv thaiv hydrochloric acid los ntawm kev tsim thaum lub sijhawm cua sov. Qhov kev sib xyaw no kuj pab tswj cov khoom siv kho tshuab thiab lub cev ntawm PVC, kom ntseeg tau tias cov khoom siv tseem ruaj khov thiab siv tau ntev thoob plaws nws lub neej ua haujlwm.
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm kev siv cov calcium zinc stabilizers hauv PVC ntau lawm yog lawv lub peev xwm los muab kev ruaj khov thermal zoo heev. Qhov no txhais tau tias cov khoom PVC uas muaj calcium zinc stabilizers muaj peev xwm tiv taus qhov kub siab yam tsis poob lawv cov qauv kev ua haujlwm lossis cov yam ntxwv kev ua tau zoo. Yog li ntawd, cov khoom no feem ntau siv rau hauv cov ntawv thov uas qhov kev tiv taus cua sov tseem ceeb, xws li cov ntaub ntawv tsim kho, cov khoom siv tsheb, thiab kev rwb thaiv hluav taws xob.
Ntxiv rau qhov muab kev ruaj khov thermal, calcium zinc stabilizers kuj muab kev tiv thaiv UV zoo heev. Qhov no txhais tau tias cov khoom PVC uas muaj cov stabilizers no tuaj yeem tiv taus lub hnub ci ntev yam tsis muaj kev puas tsuaj lossis ua brittle. Qhov no tseem ceeb heev rau cov ntawv thov sab nraum zoov, xws li cov ntaub ntawv tsim kho, cov qhov rai thiab cov rooj tog zaum sab nraum zoov, qhov twg UV yog qhov tseem ceeb tas li.
Lwm lub luag haujlwm tseem ceeb ntawm calcium zinc stabilizers hauv PVC ntau lawm yog los txhim kho kev ua tiav tag nrho thiab cov khoom siv kho tshuab ntawm cov khoom. Los ntawm kev siv cov stabilizers no, cov chaw tsim khoom muaj peev xwm ua tiav kev sib xyaw zoo dua thiab lub zog yaj, nrog rau kev tiv thaiv kev cuam tshuam thiab kev ywj pheej ntau dua. Qhov no tsim cov khoom lag luam PVC zoo uas tuaj yeem tiv taus kev siv txhua hnub yam tsis poob lawv cov duab lossis cov khoom.
Ntxiv rau qhov zoo ntawm kev siv tshuab, cov tshuaj calcium-zinc stabilizers kuj muaj qhov zoo rau ib puag ncig. Tsis zoo li qee hom tshuaj stabilizers kub, xws li cov tshuaj stabilizers uas ua los ntawm cov hlau lead, cov tshuaj calcium zinc stabilizers tsis muaj tshuaj lom thiab tsis ua rau ib puag ncig puas tsuaj. Qhov no ua rau lawv yog qhov kev xaiv zoo tshaj plaws rau cov chaw tsim khoom thiab cov neeg siv khoom uas tab tom nrhiav cov khoom siv ruaj khov thiab muaj kev nyab xeeb. Tsis tas li ntawd, kev siv cov tshuaj calcium zinc stabilizers hauv kev tsim khoom PVC pab ua kom ua raws li cov cai thiab cov qauv ib puag ncig, ua rau nws yog qhov kev xaiv zoo rau cov tuam txhab uas tab tom nrhiav kev txo lawv cov teeb meem ib puag ncig.
Zuag qhia tag nrho, calcium zinc stabilizers ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom PVC los ntawm kev muab kev ruaj khov zoo heev, tiv taus UV thiab cov khoom siv kho tshuab. Lawv siv hauv kev tsim khoom PVC tso cai rau kev tsim cov khoom siv ruaj khov thiab kav ntev uas tuaj yeem tiv taus ntau yam xwm txheej ib puag ncig thiab cov xwm txheej siv. Raws li qhov kev thov rau cov ntaub ntawv zoo thiab ruaj khov txuas ntxiv mus, qhov tseem ceeb ntawm calcium-zinc stabilizers hauv PVC tsim khoom yuav nce ntxiv, ua rau nws yog ib feem tseem ceeb ntawm kev lag luam yas.
Lub sijhawm tshaj tawm: Lub Ob Hlis-04-2024