Calcium zinc stabilizeryog ib qho tseem ceeb hauv kev tsim cov khoom siv PVC (polyvinyl chloride). PVC yog cov yas nrov siv hauv ntau hom kev siv, los ntawm cov khoom siv rau cov khoom siv. Txhawm rau ua kom lub zog thiab ua haujlwm ntev ntawm PVC, cov khoom siv hluav taws xob kub tau ntxiv rau cov khoom siv thaum lub sijhawm tsim khoom. Ib qho hluav taws kub stabilizer siv hauv PVC ntau lawm yog calcium zinc stabilizer.
Calcium zinc stabilizers yog siv los tiv thaiv PVC los ntawm degrading ntawm qhov kub thiab txias. Lawv ua hauj lwm los ntawm reacting nrog chlorine atoms nyob rau hauv PVC, uas yuav pab tiv thaiv hydrochloric acid los ntawm tsim thaum tshav kub kub. Cov tshuaj tiv thaiv no tseem pab tswj xyuas PVC cov khoom siv kho tshuab thiab lub cev, ua kom cov khoom ruaj khov thiab ruaj khov thoob plaws hauv nws lub neej kev pabcuam.
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm kev siv calcium zinc stabilizers hauv PVC ntau lawm yog lawv lub peev xwm los muab cov thermal stability zoo. Qhov no txhais tau hais tias PVC cov khoom uas muaj calcium zinc stabilizers tuaj yeem tiv taus qhov kub thiab txias yam tsis poob lawv cov qauv kev ntseeg siab lossis kev ua haujlwm zoo. Yog li ntawd, cov khoom no feem ntau siv rau hauv cov ntawv thov uas qhov kub tsis kam yog qhov tseem ceeb, xws li cov khoom siv hauv tsev, cov khoom siv tsheb, thiab hluav taws xob rwb thaiv tsev.
Ntxiv nrog rau kev muab thermal stability, calcium zinc stabilizers kuj muab UV tiv thaiv zoo heev. Qhov no txhais tau hais tias PVC cov khoom uas muaj cov stabilizers tuaj yeem tiv taus lub hnub ntev ntev yam tsis muaj degrading los yog nkig. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau kev siv sab nraum zoov, xws li cov khoom siv hauv tsev, qhov rais thav duab thiab cov rooj tog zaum sab nraum zoov, qhov twg UV raug yog qhov tseem ceeb.
Lwm qhov tseem ceeb ntawm calcium zinc stabilizers hauv PVC yog los txhim kho kev ua haujlwm tag nrho thiab cov khoom siv kho tshuab ntawm cov khoom. Los ntawm kev siv cov stabilizers no, cov tuam ntxhab muaj peev xwm ua tau zoo dua fusion thiab yaj lub zog, nrog rau kev ua kom muaj zog thiab ua kom yooj yim. Qhov no tsim cov khoom zoo PVC uas tuaj yeem tiv taus qhov kev siv txhua hnub tsis poob lawv cov duab lossis cov khoom.
Ntxiv nrog rau qhov zoo tshaj plaws, calcium-zinc stabilizers kuj muaj qhov zoo ntawm ib puag ncig. Tsis zoo li lwm yam khoom siv hluav taws xob, xws li cov hmoov lead-based stabilizers, calcium zinc stabilizers tsis muaj tshuaj lom thiab tsis zoo rau ib puag ncig. Qhov no ua rau lawv yog qhov kev xaiv zoo tshaj plaws rau cov tuam ntxhab thiab cov neeg siv khoom nrhiav cov khoom siv ruaj khov thiab nyab xeeb. Tsis tas li ntawd, kev siv cov calcium zinc stabilizers hauv PVC ntau lawm pab kom ua raws li cov kev cai ib puag ncig thiab cov qauv, ua rau nws yog ib qho kev xaiv zoo rau cov tuam txhab nrhiav kom txo lawv cov hneev taw ib puag ncig.
Zuag qhia tag nrho, calcium zinc stabilizers ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom siv PVC los ntawm kev muab cov thermal stability zoo, UV tsis kam thiab cov khoom siv kho tshuab. Lawv siv hauv PVC ntau lawm tso cai rau kev tsim cov khoom siv ruaj khov thiab kav ntev uas tuaj yeem tiv taus ntau yam ntawm ib puag ncig thiab kev siv cov xwm txheej. Raws li qhov kev thov rau cov khoom siv zoo thiab ruaj khov txuas ntxiv, qhov tseem ceeb ntawm calcium-zinc stabilizers hauv PVC ntau lawm yuav nce, ua rau nws yog ib feem tseem ceeb ntawm kev lag luam plastics.
Post lub sij hawm: Feb-04-2024