Iziqinisi zokushisa ze-PVCidlala indima ebalulekile ekuqinisekiseni ukusebenza nokuqina kwamapayipi e-PVC. Lezi zinzisi ziyizithasiselo ezisetshenziselwa ukuvikela izinto ze-PVC ekonakalisweni okubangelwa ukuchayeka ekushiseni, ekukhanyeni nase-oxygen. Kulesi sihloko, sizohlola ukusetshenziswa kwezinzinzisi zokushisa ze-PVC kumapayipi e-PVC kanye nokubaluleka kwazo ekugcineni ikhwalithi yamapayipi.
I-PVC, noma i-polyvinyl chloride, iyinto eguquguqukayo evame ukusetshenziswa embonini yezokwakha ngezinhlelo zokusebenza ezahlukahlukene, okubandakanya amapayipi, okokufakwa kanye namapayipi. Amapayipi e-PVC asetshenziswa kakhulu ekunikezeni amanzi, ukugeleza kwamanzi, ukuchelela kanye nezinhlelo zokuhlanza indle ngenxa yokuqina kwawo, ukumelana nokugqwala, kanye nokufaka kalula. Kodwa-ke, izinto ze-PVC zivame ukuwohloka lapho zivezwa ukushisa nokukhanya, okuholela ekulahlekelweni kwamandla emishini kanye nokushintsha kombala.
Ukuze unqobe le nselele, izinzisi zokushisa ze-PVC zisetshenziselwa ukuvikela impahla ye-PVC ekonakalisweni kokushisa ngesikhathi sokucubungula nempilo yesevisi yamapayipi e-PVC. Inhloso yalezi ziqinisi ukuvimbela ukusabela kokucekelwa phansi okwenzeka lapho i-PVC ichayeka ekushiseni nasekukhanyeni, ngaleyo ndlela kunwetshwe impilo yesevisi yepayipi futhi igcine izakhiwo zayo zemishini.
Kunezinhlobo eziningi zezinzinzisi zokushisa ze-PVC ezisetshenziselwa amapayipi e-PVC, okuhlanganisa iziqinisi ezisekelwe kumthofu, iziqinisi ezisekelwe ethini, iziqinisi ezisekelwe ku-calcium neziqinisi ezisekelwe ku-organic. Uhlobo ngalunye lwesinzinzisi lunezinto zalo ezihlukile kanye nezinzuzo, futhi ukukhetha isinzinzisi esifaneleka kakhulu kuncike ezidingweni ezithile zohlelo lwakho lokusebenza lwepayipi le-PVC.
Iziqinisi ezisekelwe kumthofu, njenge-lead stearate kanye ne-lead trivalent sulfate, bezisetshenziswa kabanzi esikhathini esidlule ngenxa yokusimama kwazo okushisayo nokusebenza kahle kwezindleko. Nokho, ngenxa yokukhathazeka kwemvelo nempilo, amazwe amaningi akuyekile ukusetshenziswa kwezinzinzisi ezinomthofu futhi esikhundleni sazo afaka ezinye izinto zokuzinzisa.
Iziqinisi ezisekelwe ku-tin, njenge-dibutyltin dilaurate ne-tributyltin oxide, zaziwa ngokuzinza kwazo okushisayo nokucaca okuphakeme, okuzenza zifanelekele izinhlelo zokusebenza lapho ukugcinwa kombala kubalulekile. Lezi zinzisi futhi zivikela ngempumelelo ipayipi le-PVC ekonakalisweni ngesikhathi sokucubungula nokuchayeka ngaphandle.
Iziqinisi ezisekelwe ku-calcium, njenge-calcium stearate kanye ne-calcium zinc stabilizers, ziyizindlela ezingezona ezinobuthi esikhundleni sokuqiniswa okusekelwe kumthofu futhi zivame ukusetshenziswa ekukhiqizeni amapayipi e-PVC okuphuza amanzi kanye nokupakisha ukudla. Lezi ziqinisi zinokuzinza okuhle kokushisa kanye nokumelana nesimo sezulu, okuzenza zifanelekele izinhlelo zokusebenza zangaphandle.
Iziqinisi ze-Organic, ezifana namafutha kabhontshisi we-soya epoxidized kanye ne-methyltin mercaptide, zithathwe emithonjeni yemvelo futhi zidumile ngenxa yezindawo zazo ezinobungani bemvelo nezingezona ubuthi. Lezi ziqinisi zivikela ngokuphumelelayo amapayipi e-PVC ekulimazeni okushisayo futhi afaneleka izicelo ezinemithetho eqinile yemvelo.
Phakathi nenqubo yokukhiqiza amapayipi e-PVC, izinzamisi zokushisa ze-PVC zengezwa ku-resin ye-PVC ngesikhathi senqubo yokuhlanganisa ukuze kwakhiwe ingxube ye-homogeneous. Ama-Stabilizer avimbela ngempumelelo ukusabela kokucekelwa phansi okubangelwa ukushisa nokukhanya ngokwakha izakhiwo ezinamaketanga e-PVC polymer. Lokhu kuqinisekisa ukuthi ipayipi le-PVC ligcina amandla alo okusebenza, ukuqina kombala kanye nobuqotho be-dimensional kukho konke ukuphila kwalo kwesevisi.
Ngesikhathi sokusebenza kwamapayipi e-PVC, ukuchayeka ezintweni zangaphandle ezifana nokukhanya kwelanga, ukushintshashintsha kwezinga lokushisa, amakhemikhali, njll. kuzosheshisa ukuwohloka kwezinto ze-PVC. Iziqinisi zokushisa ze-PVC zidlala indima ebalulekile ekuvikeleni amapayipi kulezi zici ezilulazayo, okuqinisekisa ukusebenza kwawo kwesikhathi eside nokwethembeka.
Ukusetshenziswa kwezinzinzisi zokushisa ze-PVC kubalulekile ekugcineni ikhwalithi nokusebenza kwamapayipi e-PVC. Lezi zinzisi zivikela izinto ze-PVC ekuwohlokeni kokushisa futhi ziqinisekisa ukuthi ipayipi igcina izakhiwo zayo zemishini, ukuqina kombala kanye nobuqotho be-dimensional. Njengoba ubuchwepheshe bokuzinzisa buthuthuka, manje sekunezinketho eziningi zokuhlangabezana nezidingo ezithile zezinhlelo zokusebenza zamapayipi e-PVC ahlukene. Njengoba isidingo samapayipi e-PVC ekhwalithi ephezulu futhi ahlala isikhathi eside siqhubeka sikhula, ukubaluleka kwezinzisi zokushisa ze-PVC embonini yamapayipi e-PVC akukwazi ukweqiwa.
Isikhathi sokuthumela: Jan-10-2024