Ukuhlaziywa Kwenqubo Yokwakhiwa Kwendwangu Yelula ye-PVC

Indwangu enwetshiwe ye-PVC, into yokwenziwa enwebeka kakhulu futhi ehlala isikhathi eside, isetshenziswa kakhulu emikhiqizweni yangaphandle, amatende, izindwangu zokukhangisa, namathuluzi okuvikela ezokwelapha. Inqubo yokwakheka kwayo ithinta ngokuqondile izici ezingokomzimba zomkhiqizo nempilo yesevisi, ikwenze kube semqoka ukukwazi ukugeleza kwenqubo ewumongo.

Inqubo yokwenza indwangu enwetshiwe ye-PVC iqukethe izinyathelo ezine ezibalulekile: ukuxuba impahla eluhlaza, i-extrusion calendering, ukwelula nokuma, kanye{0}}nokucubungula kokuthunyelwe. Okokuqala, i-polyvinyl chloride (PVC) resin ixutshwa nezithasiselo ezifana namaplasitiki, ama-stabilizer, kanye nezinto zokuthambisa ngezilinganiso ezifanele futhi zihlakazwe ngokulinganayo-kumxube wejubane eliphezulu ukuze kwakheke ukunamathisela okune-viscosity ethile. Ukukhethwa kwezithasiselo kulesi sigaba kuthinta ngokuqondile ukuguquguquka kwezinto, ukumelana nesimo sezulu, nokumelana ne-UV.

Ingxube ibe isingena ku-extruder, lapho incibilikiswa khona ngezinga lokushisa eliphezulu (cishe u-160-180℃) futhi ikhishwe nge-T-die ibe eshidini. Ishidi libe selifakwa kukhalenda ngama-roller ukulawula ukujiya nokushelela kwendawo. Izinga lokushisa lekhalenda kufanele lilawulwe ngokunembile ukuze kugwenywe ukubola kwezinto ngenxa yokushisa ngokweqile noma ingcindezi yangaphakathi ebangelwa ukupholisa kancane.

Ukwelula nokuma kuyinqubo ewumongo enikeza indwangu enwetshiwe ye-PVC ngokunwebeka kwayo okuphezulu. Ishidi lishisisa ngaphambilini (ngokujwayelekile 80-120℃) ngaphambi kokuthi lelulwe ngokulinganayo noma nge-biaxially emshinini wokwelula ubude noma ophambanayo. Isilinganiso sokwelulela ngokuvamile siyizikhathi ezingu-2-5, siqondanisa amaketanga e-molecular ohlangothini lwamandla, okwenza ngcono kakhulu ubude bento kanye nokuqina. Eminye imikhiqizo esezingeni eliphezulu isebenzisa ubuchwepheshe bokwelula obulandelanayo ukuze kuthuthukiswe ibhalansi yemishini.

Ekugcineni, indwangu eseluliwe ithola ukushisa nokupholisa. Ukusetha ukushisa kuhilela isikhathi esifushane sokushisa okuphezulu (cishe u-100-}130℃) ukuze kunzinziswe ukwakheka kwamangqamuzana futhi kuqedwe ukucindezeleka okuyinsalela. Ukupholisa kwenziwa ngomoya noma ngamanzi ukuze kuqinisekiswe ukuzinza kwe-dimensional. Eminye imikhiqizo futhi idinga ukwelashwa okungaphezulu, okufana nama-UV-resistant noma ama-retardants amalangabi, ukuthuthukisa ukusebenza.

Inqubo yokubumba yendwangu enwetshiwe ye-PVC idinga ukulawula okuqinile kwezinga lokushisa, isivinini, kanye nemingcele yokucindezeleka. Ukuchezuka kunoma yisiphi isinyathelo kungaholela ekusebenzeni okubalulekile okusezingeni eliphansi. Ukuthuthuka kwezobuchwepheshe, okufana nokwethulwa kokuqapha ku-inthanethi nokulawula okuzenzakalelayo, kuqhuba izinqubo zesimanje ekufezekiseni ukusebenza kahle okukhulu kanye nobungane bemvelo, okuhlinzeka ngezixazululo zezinto ezibonakalayo ezisezingeni eliphezulu zezinhlelo zokusebenza ezingaphansi komfula.