izindaba

Ipayipi le-PVC (ipayipi le-PVC-U) ipayipi le-PVC eliqinile, lenziwe nge-PVC resin ene-stabilizer, i-lubricant nokunye ukubunjwa kwe-extrusion okushisa okushisayo, ipayipi lepulasitiki elasungulwa futhi lasetshenziswa.Ipayipi le-PVC-U linokumelana nokugqwala okuqinile, ukubopha kalula, intengo ephansi nokuthungwa okuqinile.Kodwa-ke, ngenxa yokuvuza kwe-PVC-U monomer kanye nezithasiselo, ifaneleka kuphela ohlelweni lokuhlinzeka ngamanzi lapho izinga lokushisa lokudlulisa lingeqi ku-45 ℃.Amapayipi epulasitiki asetshenziselwa ukudonsa amanzi, amanzi angcolile, amakhemikhali, ukufudumeza nokupholisa uketshezi, ukudla, uketshezi oluhlanzekile kakhulu, udaka, igesi, umoya ocindezelwe kanye nokufakwa kwesistimu ye-vacuum.

Inamandla amahle okuqina namandla okucindezela: kodwa ukuguquguquka kwayo akukuhle njengamanye amapayipi epulasitiki.

Ukumelana noketshezi oluphansi: udonga lwepayipi le-PVC-U lubushelelezi kakhulu, futhi ukumelana noketshezi kuncane kakhulu.I-coefficient yokuqina kwayo ingu-0.009 kuphela, futhi umthamo wayo wokuthutha emanzini uphakeme ngo-20% kunepayipi lensimbi eliwububanzi obufanayo, futhi liphakeme ngo-40% kunelo lepayipi likakhonkolo.

Ukumelana nokugqwala okuhle kakhulu nokumelana nezidakamizwa: Ipayipi le-PVC-U linokumelana ne-asidi okuhle kakhulu, ukumelana ne-alkali nokumelana nokugqwala.Akuthintwa umswakama kanye ne-pH yenhlabathi, futhi ayidingi ukwelashwa okulwa nokugqwala lapho ipayipi lifakwa.

Ngokuqina kwamanzi okuhle: ukufakwa kwepayipi le-PVC-U kunokuqina kwamanzi okuhle, kungakhathaliseki ukuthi kuxhunywe ngendandatho yokunamathisela noma yerabha.

Ubufakazi be-bite: Amashubhu e-PVC-U awawona umthombo wemisoco ngakho-ke awakwazi ukuhlaselwa ngamagundane.Ngokocwaningo olwenziwa yiNational Health Foundation eMichigan, amagundane awalumi ipayipi le-PVC-U.

Ukuhlolwa kokusebenza: isikhathi sokuphulukisa, izinga lokushwabana, amandla ahlukanisayo, amandla okuhlubula impahla eqinile, ukuzinza kokushisa, isikhathi esisebenzayo, isikhathi sokulondoloza, ukukhululwa kwezinto eziyingozi.

Inqubo yokukhiqiza

Impahla eluhlaza + ukulungiselela okuyisizayo → ukuxuba → ukudlulisa nokuphakela → ukuphakela ngempoqo → Isikulufa se-cone-screw-screw extruder → isikhunta esikhiphayo → umkhono wokulinganisa → ibhokisi lokusetha le-vacuum → ukucwiliswa ithange lamanzi okupholisa → umshini wokuphrinta uyinki → ugandaganda wokukhasa → umshini wokuphakamisa ummese → indawo yokubeka amapayipi → ukuhlolwa komkhiqizo oqediwe kanye nokupakishwa.

I-PVC ingahlukaniswa ibe i-PVC ethambile ne-PVC eqinile.

I-PVC eqinile ibalelwa ku-2/3 wemakethe, kanye nama-akhawunti e-PVC athambile angu-1/3.

I-PVC ethambile ivame ukusetshenziselwa indawo yaphansi, uphahla kanye nesikhumba, kodwa ngenxa yokuthi i-PVC ethambile iqukethe i-plasticizer (lokhu futhi umehluko phakathi kwe-PVC ethambile ne-PVC eqinile), ukusebenza ngokomzimba kubi (njengoba amapayipi amanzi adinga ukuthwala ukucindezela okuthile kwamanzi, I-PVC ethambile ayifanele ukusetshenziswa), ngakho-ke ukusetshenziswa kwayo kunqunyelwe.

I-PVC eqinile ayinayo i-plasticizer, ngakho-ke kulula ukwakha, izakhiwo ezinhle zomzimba, ngakho-ke inokuthuthukiswa okukhulu kanye nenani lesicelo.Enqubweni yokukhiqiza izinto ze-PVC, izithasiselo eziningana zizokwengezwa, njenge-stabilizer, i-plasticizer nokunye.Uma zonke izithasiselo zokuvikela imvelo zisetshenziswa, ipayipi le-PVC libuye libe yimikhiqizo yokuvikela imvelo engenabuthi futhi engenambitheki.