Izisefo ze-molecular ze-Zeolite zidonse ukunaka okukhulu eminyakeni yamuva nje njengeziqinisi embonini yepulasitiki, njenge-polyvinyl chloride (PVC) ne-polypropylene (PP). Ngokuvamile zisetshenziselwa ukuvimbela ukusabela kokuwohloka nokuthuthukisa ukuqina kokushisa, ngaleyo ndlela andise impilo yesevisi.
I-PVC Zeolite Stabilizer
I-PVC izwela ngokwemvelo ekushiseni, ukungazinzi kahle kwe-thermal, futhi ijwayele ukonakala emazingeni okushisa aphezulu. Iziqinisi ezishisayo ziyadingeka ukuze kuvinjwe ukubola, ukushintsha umbala, kanye nokulahleka kwempahla eyimishini yempahla ye-PVC.
I-PVC ikhipha i-hydrogen chloride uma ichayeke ekushiseni, okuyisici esiqondile esibangela i-PVC ibe mnyama ngombala futhi yonane ekusebenzeni. Ngakho-ke ama-thermal stabilizer anesibopho sokungathathi hlangothi kwe-hydrogen chloride kanye nokuvimbela ukuwohloka kwamaketanga.
Amasefa amamolekyuli e-Zeolite anamandla okukhangisa i-hydrogen chloride, futhi angasebenza futhi ngokuhambisana nezinzinzisi ze-calcium noma ze-zinc ukuze kuthuthukiswe ukuqina kukonke okushisayo kwe-PVC, futhi kuthuthukiswe ukuguquguquka kokuqala kanye{0}}nezinkinga zokuguga zesikhathi eside ze-PVC.
I-PP Zeolite Stabilizer
I-PP iyakwazi ukufakwa nge-oxidation, ukuqhekeka okushisayo, noma ukuwohloka kwesithombe, futhi ngaleyo ndlela idinga ukungezwa kwama-antioxidants kanye neziqinisi zokushisa. Ikakhulukazi kuma-masterbatches agcwele kanye nezinto ezigaywe kabusha, ukungcola (amanzi, ama-acids) kuzosheshisa inqubo yokuwohloka.
Izisefo ze-molecular ze-Zeolite zimunca amanzi ayizinsalela ohlelweni lwe-PP ukuze kuthuthukiswe ukuzinza kokucubungula, ukumunca ukungcola okune-asidi okufana ne-peroxides nama-asidi e-organic ukuze kuthuthukiswe izakhiwo ze-antioxidant, futhi kungasebenza ngokubambisana nezinye izithasiselo ukuvimba ukudluliswa kokushisa nomoya-mpilo, ngaleyo ndlela andise impilo yesevisi ye-PP.
Njengezinzisi ze-PP noma izigcwalisi zenhlanganisela ye-PP, izisefo zamangqamuzana azifuduki noma aziguquguquki, zinokuzinza okuhle kokushisa, futhi zingaxutshwa nezigcwalisi ezingaphili noma izithasiselo ukuze kuthuthukiswe ukusebenza kwezinto ze-PP.
I-Zeolite Molecular Sieves Ye-PVC/PP Stabilizers
Amasefa e-molecular ye-Zeolite angasetshenziswa kuzinzisi ze-PVC/PP ahlanganisa uhlobo A, P, X kanye no-Y. Nokho, uhlobo lwe-molecular sieve (isb. 4Impushana ye-zeolite) ifaneleka kakhulu ngenxa yomphumela wayo kanye nezindleko{3}}ukusebenza kahle.
Thayipha i-3A ye-zeolite ye-molecular sieve: Ivame ukusetshenziswa njengama-desiccants ukuze amunce umswakama ezinhlelweni ze-PVC noma ze-PP. Iphinde ibe nomthelela othile ekubambeni ama-asidi amahhala (njengama-trace acid akhiqizwa ukuwohloka kwe-oxidative) ezinhlelweni ze-PP.
Thayipha i-4A i-zeolite ye-molecular sieve: Ku-stabilizers ye-PVC, idonsa ama-molecule amancane e-hydrogen chloride, ivimbele ukusabela kokuwohloka kanye nokwenza ngcono ukuguquguquka kokushisa. Ku-PP stabilizers, imunca umswakama nokungcola okune-asidi, ithuthukise ukuzinza kokucubungula kanye nokunciphisa izinga lokuwohloka.
Thayipha i-5A i-zeolite ye-molecular sieve: Idonsa i-hydrogen chloride nama-molecule okungcola akhululwa ngesikhathi sokucutshungulwa kwe-PVC, futhi isetshenziselwa kakhulu ukuthuthukisa umthamo we-adsorption kanye nokumelana nezinga lokushisa.
Thayipha isisefo semolekyuli ye-zeolite engu-13X: Inomthamo omkhulu we-adsorption futhi ingakwazi ukumunca i-hydrogen chloride, i-sulphur dioxide, namanye amagesi ane-asidi. Ngokuvamile isetshenziswa ezinhlelweni ezingeziwe ze-PVC noma njengesithwali esiyinhlanganisela sokuzinzisa.