[Incazelo evamile] I-Polyethylene iyipulasitiki, eyaziwa ngesilinganiso sayo sobuningi obukhulu, ukuguquguquka kanye nokuqina kwamakhemikhali. Ilungele ukusetshenziswa kwamapayipi okucindezela kanye nokungacindezeli. Amapayipi e-HDPE avame ukwenziwa nge-resin ye-polyethylene eyi-100, enobukhulu obungu-930-970 kg/m3, obuphindwe kasikhombisa kunobensimbi.

I-Polyethylene iyipulasitiki, eyaziwa ngesilinganiso sayo sobuningi obuphezulu, ukuguquguquka kanye nokuqina kwamakhemikhali. Ilungele ukusetshenziswa kwamapayipi okucindezela kanye nokungacindezeli. Amapayipi e-HDPE avame ukwenziwa nge-polyethylene 100 resin, enobukhulu obungu-930-970 kg/m3, obuphindwe kasikhombisa kunensimbi. Amapayipi alula kulula ukuwathutha nokuwafaka. I-Polyethylene ayithinteki yinqubo yokugqwala kwe-electrochemical, futhi kuvamile ukuthi amapayipi avulelwe usawoti, i-asidi kanye ne-alkali. Ubuso obubushelelezi bepayipi le-polyethylene ngeke bugqwale, futhi ukungqubuzana kuphansi, ngakho-ke ipayipi lepulasitiki alithinteki kalula ukukhula kwama-microorganisms. Amandla okumelana nokulimala kokugqwala kanye nokugeleza okuqhubekayo kwenza izidingo zokugcinwa kwamapayipi e-HDPe zibe ziphansi kakhulu. Ipayipi le-polyethylene lingenziwa nge-resin eqinisiwe, ehlukaniswe njenge-PE100-RC, futhi lengezwe ukuze kuncishiswe ukukhula kokuqhekeka. Amapayipi akhiqizwayo angaba nokuphila isikhathi eside kwenkonzo, kanti 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 athambile, inzuzo esobala kakhulu yamapayipi e-polyethylene ukuthi angavimbela ukuvuza. Kunezinhlobo ezimbili zokuvuza kwamapayipi: ukuvuza kwamalunga, ukuvuza okuqhumile kanye nokuvuza okubhobokile, okulula ukuzisingatha.

Usayizi weIpayipi le-HDPEiphakathi kuka-1600 mm no-3260 mm, futhi amapayipi amakhulu asemakethe njengamanje angasetshenziswa. Ngaphezu kwezinhlelo zokuphakelwa kwamanzi zikamasipala, amapayipi epulasitiki amakhulu enziwe nge-polyethylene angasetshenziswa nasezindaweni zokuhlanza amanzi angcolile. Amapayipi amakhulu anobubanzi obusukela ku-315 cm kuya ku-1200 cm. Ububanzi obukhuluIpayipi le-HDPeIhlala isikhathi eside kakhulu futhi ithembekile. Ngemva kokugqitshwa emhlabathini, ingasebenza amashumi eminyaka futhi ayidingi ukulungiswa okuningi, ngakho-ke ifaneleka kakhulu ekusetshenzisweni kokwelashwa kwamanzi amdaka. Ukuqina kwepayipi le-polyethylene kuyanda njengoba usayizi walo ukhuphuka, okubonisa ukusebenza okumangalisayo kokulwa nokudlidliza. Thatha ukuzamazama komhlaba eKobe ngo-1995 eJapan njengesibonelo, ingqalasizinda yasemadolobheni; wonke amanye amapayipi awasebenzi okungenani kanye njalo ngamakhilomitha amathathu, futhi lonke uhlelo lwamapayipi e-HDPE alunawo neze amaphutha.

Izinzuzo zepayipi le-HDPE: 1. Ukuqina okuhle kwamakhemikhali: I-HDPE ayinayo i-polarity, ukuqina okuhle kwamakhemikhali, ayizalisi ulwelwe namagciwane, ayikhuli, futhi ingumkhiqizo onobungani nemvelo. 2. Amandla amahle okuxhuma: sebenzisa i-socket electric fusion noma i-butt joint thermal fusion, enamalunga ambalwa futhi akukho ukuvuza. 3. Ukumelana nokugeleza kwamanzi okuphansi: Ubuso bangaphakathi be-Ipayipi le-HDPeibushelelezi, ine-coefficient yokumelana nokuguguleka ephansi kanye nokugeleza okukhulu. 4. Ukumelana okuhle nokushisa okuphansi kanye nokukhungatheka: izinga lokushisa lokukhungatheka lingu-(-40), futhi izinyathelo ezikhethekile zokuvikela azidingeki ekwakhiweni kokushisa okuphansi. 5. Ukumelana okuhle nokukhungatheka: Ukuhlolwa kokuqhathanisa ukumelana nokukhungatheka kwamapayipi e-polyethylene namapayipi ensimbi kukhombisa ukuthi ukumelana nokukhungatheka kwamapayipi e-polyethylene kuphindwe kane kunokwamapayipi ensimbi. 6. Ukulwa nokuguga kanye nokuphila isikhathi eside kwenkonzo: Ipayipi le-HDPE lingagcinwa noma lisetshenziswe ngaphandle iminyaka engama-50 ngaphandle kokulinyazwa imisebe ye-ultraviolet.