Ehlabathini lokusetyenzwa kwepolymer, izongezo ezimbalwa zisebenza ngokuzolileyo kodwa ngokusebenzayo njengezizinzisi zesepha yesinyithi. Ezi zixhobo eziguquguqukayo ziyi-backbone ye-PVC (i-polyvinyl chloride) ukuzinza, ukuqinisekisa ukuba yonke into esuka kwimibhobho eqinile ukuya kwiifilimu eziguquguqukayo igcina ingqibelelo yayo phantsi kobushushu, uxinzelelo kunye nexesha. Kubavelisi kunye neenjineli ezihamba ngeemfuno zemveliso ye-PVC yanamhlanje, ukuqonda izicelo zabo abukho nje ubuchwepheshe-kubalulekile ukuhambisa iimveliso ezizinzileyo, ezikumgangatho ophezulu.
Yintoni iMetal Seap Stabilizers?
Izinzisi yesepha yesinyithiziikhompawundi ze-organometallic ezenziwe ngokusabela kwi-acids enamafutha (njenge-stearic okanye i-lauric acid) ngee-oxide zetsimbi okanye ii-hydroxides. Izinyithi eziqhelekileyo ziquka i-calcium, i-zinc, i-barium, i-cadmium (nangona isanda kukhutshwa ngenxa yezizathu zokusingqongileyo), kunye ne-magnesium. Umlingo wabo ulele ekulinganiseni iindima ezimbini eziphambili: ukuzinzisa i-PVC ngexesha lokushisa okuphezulu (i-extrusion, i-injection molding) kunye nokukhusela ukuthotywa kwexesha elide kwiindawo zokusetyenziswa kokugqibela.
Kutheni iPVC ingakwazi't Phila Ngaphandle Kwabo
I-PVC yimathiriyeli yehashe, kodwa inesithende se-Achilles: ukungazinzi kwe-thermal. Xa ishushu ngaphezu kwe-160 ° C (ubushushu obuqhelekileyo bokulungiswa), i-PVC ye-polymer chain chain idiliza, ikhupha i-hydrochloric acid (HCl) kwi-self-accelerating reaction. Le "dehydrochlorination" ikhokelela ekutshintsheni kombala, i-brittleness, kunye nokulahlekelwa kwamandla omatshini-iziphene ezibulalayo kwizicelo ezibalulekileyo ezifana nemibhobho yamanzi okanye i-tubing yonyango.
Izizinzi zesepha yesinyithi ziphazamisa lo mjikelo ngeendlela ezintathu eziphambili:
HCl Ukucoca: Zinciphisa iimolekyuli zeHCl eziyingozi, zithintele ekuqhubeni ukonakala ngakumbi.
Ukutshintshwa kwe-Ion: Bathatha indawo ye-athomu yeklorine engazinzanga kwikhonkco le-polymer kunye namaqela e-metal carboxylate azinzileyo, anciphisa ukuphuka.
Inkxaso yeAntioxidant: Iindlela ezininzi zokulungisa zisebenza ngokubambisana kunye ne-antioxidants ukucima i-radicals yamahhala, i-byproduct yobushushu kunye nokuvezwa kwe-UV.
Izicelo eziphambili kwiPVC Manufacturing
Izizinzi zesepha yesinyithi zikhanya kuluhlu lweemveliso zePVC, nganye ifuna ukusebenza okulungiselelweyo:
Izinto eziluncedo eziqhuba ukukhuliswa koMntwana
Yintoni eyenza ukuba izinzisi zesepha yesinyithi zibe yimfuneko ekuqhubekeni kwePVC? Umxube wabo okhethekileyo weenzuzo:
BanziUkuhambelana: Basebenza ngaphandle komthungo ngeeplastiki, izithambisi, kunye nezihluzi (umz.,calcium carbonate), ukwenza lula ukuqulunqwa.
Ukusebenza okulungiselelweyo: Ngokuhlengahlengisa umlinganiselo wesinyithi (umzekelo, phezuluizinkiukuguquguquka, i-calcium engaphezulu yokuqina), abavelisi banokucokisa ukuzinza kwiimfuno ezithile.
Ukuthotyelwa koMgaqo: I-calcium-zincIinkqubo zihlangabezana nemigangatho engqongqo yehlabathi yoqhagamshelwano lokutya, amanzi okusela, kunye netyhefu ephantsi-ibaluleke kakhulu ekuthembekeni kwabathengi.
Iindleko-Ukusebenza: Bahambisa uzinzo olomeleleyo ngexabiso eliphantsi xa kuthelekiswa nezinye iindlela ezifana ne-organotins, ezenza zilungele ukuveliswa kwevolumu ephezulu.
Ikamva: Lizinzile kwaye liSebenza ngokuPhezulu
Njengoko ishishini litshintshela ekuzinzeni, izinzisi zesepha yesinyithi ziyavela nazo. Imixube ye-calcium-zinc, ngakumbi, ithatha indawo yezizinzisi ezisekelwe kwisinyithi esinzima (njenge.ukukhokelaokanye cadmium) ukuhlangabezana neenjongo eco-friendly. Ukwenziwa kwezinto ezintsha kwiisepha zetsimbi "eziluhlaza"-ukusebenzisa i-acids ehlaziyiweyo okanye i-biodegradable carriers-ziqhubela ukunciphisa indawo yazo yendalo ngaphandle kokuncama ukusebenza.
Ngamafutshane, izilungisi zesepha yesinyithi zingaphezulu kunezongezo-ziluncedo. Bajika amandla e-PVC abe yintembeko, beqinisekisa ukuba imibhobho, iiprofayili, kunye neefilim esixhomekeke kuzo zenza rhoqo, ngokukhuselekileyo, kwaye ngokuzinzileyo. Kubavelisi abajonge ukuhlala phambili kwimarike ekhuphisanayo, ukukhetha isizinzi sesepha yesinyithi esifanelekileyo ayisosigqibo sobugcisa-kukuzinikela kumgangatho.
Ngaba ukulungele ukwenza imixube yakho yePVC? Masiqhagamshele sijonge ukuba izisombululo zesepha yesinyithi ezilungelelanisiweyo zinokuziphakamisa njani iimveliso zakho.
Ixesha lokuposa: Jul-25-2025