[Incazelo evamile] I-Polyethylene iyipulasitiki, eyaziwa ngenani layo eliphezulu lokuminyana, ukuguquguquka nokusimama kwamakhemikhali. Ilungele izinhlelo zokusebenza zamapayipi okucindezelayo nezingacindezeli. Amapayipi e-HDPE ngokuvamile enziwe nge-polyethylene 100 resin, enesisindo esingu-930-970 kg/m3, okungaba izikhathi ezingu-7 kunensimbi.

I-polyethylene iyipulasitiki, eyaziwa ngenani layo eliphezulu lokuminyana, ukuguquguquka nokusimama kwamakhemikhali. Ilungele izinhlelo zokusebenza zamapayipi okucindezelayo nezingacindezeli. Amapayipi e-HDPE ngokuvamile enziwe nge-polyethylene 100 resin, enesisindo esingu-930-970 kg/m3, okungaba izikhathi ezingu-7 kunensimbi. Amapayipi alula kulula ukuwahambisa nokuwafaka. I-polyethylene ayithinteki ngenqubo ye-electrochemical corrosion, futhi kuvamile ukuthi amapayipi avezwe kusawoti, i-asidi ne-alkali. Ubuso obubushelelezi be-tube ye-polyethylene ngeke budliwe, futhi ukungqubuzana kuphansi, ngakho-ke ithubhu yepulasitiki ayithinteki kalula ekukhuleni kwama-microorganisms. Ikhono lokumelana nokulimala kokugqwala nokugeleza njalo kwenza izidingo zokugcinwa kwamapayipi e-HDPe zibe phansi kakhulu. Ipayipi le-polyethylene lingenziwa nge-resin eqinisiwe, ehlukaniswa njenge-PE100-RC, futhi yengezwe ukuze ibambezele ukukhula kokuqhekeka. Amapayipi akhiqizwa angaba nempilo ende yenkonzo, futhi i-polyethylene inenzuzo yezomnotho emjikelezweni wokuphila wephrojekthi.

Manje njengoba ukuqina kwamapayipi e-HDPe sekunqunyiwe, umnotho ubaluleke kakhulu lapho amapayipi e-polyethylene esetshenziswa ekusetshenzisweni kwengqalasizinda yokonga amanzi. Uma kuqhathaniswa namapayipi ensimbi e-ductile, inzuzo esobala kakhulu yamapayipi e-polyethylene ukuthi angakwazi ukuvimbela ukuvuza. Kunezinhlobo ezimbili zokuvuza kwamapayipi: ukuvuza kwamalunga, ukuvuza kokuqhuma kanye nokuvuza kokubhoboza, okulula ukukuphatha.

Usayizi weIpayipi le-HDPEiphakathi kuka-1600 mm no-3260 mm, futhi amapayipi amakhulu asemakethe okwamanje angasetshenziswa. Ngaphezu kwezinhlelo zikamasipala zokuhlinzeka ngamanzi, amapayipi epulasitiki anobubanzi obukhulu enziwe nge-polyethylene angasetshenziswa futhi ekukhipheni usawoti emanzini olwandle nasezikhungweni zokuhlanza amanzi angcolile. Amapayipi amakhulu ububanzi angaba kusuka ku-315 cm kuya ku-1200 cm. I-diameter enkuluIpayipi le-HDPeihlala isikhathi eside futhi inokwethenjelwa. Ngemva kokugqitshwa emhlabathini, ingasebenza amashumi eminyaka futhi idinga ukulungiswa okuncane, ngakho ifaneleka kakhulu izicelo zokuhlanza amanzi angcolile. Ukuqina kwepayipi le-polyethylene kuyanda njengoba ubukhulu balo bukhula, okubonisa ukusebenza okumangalisayo kokulwa nokudlidliza. Thatha ukuzamazama komhlaba e-Kobe ngo-1995 eJapane njengesibonelo, ingqalasizinda yasemadolobheni; wonke amanye amapayipi ayahluleka okungenani kanye njalo kumakhilomitha amathathu, futhi lonke uhlelo lwamapayipi e-HDPE alukwazi ukwehluleka.

Izinzuzo zepayipi le-HDPE: 1. Ukuzinza okuhle kwamakhemikhali: I-HDPE ayinakho ukugqama, ukuzinza okuhle kwamakhemikhali, ayizaleli ulwelwe namagciwane, ayilinganisi, futhi iwumkhiqizo ohambisana nemvelo. 2. Amandla okuxhumana okuhle: sebenzisa i-socket fusion kagesi noma i-butt joint thermal fusion, enamalunga ambalwa futhi akukho ukuvuza. 3. Ukumelana nokugeleza kwamanzi okuphansi: Indawo engaphakathi yeIpayipi le-HDPeibushelelezi, ine-coefficient yokumelana nokugqoka okuphansi kanye nokugeleza okukhulu. 4. Ukumelana okuhle nokushisa okuphansi kanye nokuqina: izinga lokushisa le-brittleness liyi-(-40), futhi izinyathelo ezikhethekile zokuzivikela azidingeki ekwakhiweni kokushisa okuphansi. 5. Ukuphikiswa okuhle kwe-abrasion: Ukuhlolwa kokuqhathaniswa kokumelana nokuhuzuka kwamapayipi e-polyethylene namapayipi ensimbi kubonisa ukuthi ukumelana nokuhuzuka kwamapayipi e-polyethylene izikhathi ezingu-4 kunezinsimbi zensimbi. 6. Ukuvimbela ukuguga nempilo ende yesevisi: Ipayipi le-HDPE lingagcinwa noma lisetshenziswe ngaphandle iminyaka engu-50 ngaphandle kokulinyazwa imisebe ye-ultraviolet.