[Inkcazo ngokubanzi] I-Polyethylene yiplastiki, eyaziwa ngokuba yi-high density ratio, ukuguquguquka kunye nokuzinza kweekhemikhali. Ifanelekile kuxinzelelo kunye nezicelo zemibhobho yoxinzelelo. Imibhobho ye-HDPE ngokuqhelekileyo yenziwe nge-polyethylene i-resin eyi-100, kunye nobuninzi be-930-970 kg / m3, malunga namaxesha angama-7 ensimbi.

I-Polyethylene yiplastiki, eyaziwa ngokuba yi-high density ratio, i-flexibility kunye nokuzinza kweekhemikhali. Ifanelekile kuxinzelelo kunye nezicelo zemibhobho yoxinzelelo. Imibhobho ye-HDPE ngokuqhelekileyo yenziwe nge-polyethylene i-resin eyi-100, kunye nobuninzi be-930-970 kg / m3, malunga namaxesha angama-7 ensimbi. Imibhobho elula kulula ukuyihambisa kunye nokuyifaka. I-Polyethylene ayichatshazelwa yinkqubo ye-electrochemical corrosion, kwaye iqhelekile ukuba imibhobho ibonakale kwityuwa, i-asidi kunye ne-alkali. Ubuso obubushelelezi betyhubhu ye-polyethylene ayiyi kugqwala, kwaye i-friction iphantsi, ngoko ityhubhu yeplastiki ayichaphazeli lula ukukhula kwe-microorganisms. Ukukwazi ukuxhathisa umonakalo wokubola kunye nokuhamba rhoqo kwenza ukuba iimfuno zokugcinwa kweepayipi ze-HDPe ziphantsi kakhulu. Umbhobho we-polyethylene unokwenziwa nge-resin eqinisiweyo, ehlelwe njenge-PE100-RC, kwaye yongezwa ukunciphisa ukukhula kokuqhekeka. Imibhobho eveliswayo ingaba nobomi benkonzo ende, kwaye i-polyethylene inenzuzo yezoqoqosho kumjikelezo wobomi beprojekthi.

Ngoku ukuba ukuqina kwemibhobho ye-HDPe kunqunywe, uqoqosho lubaluleke kakhulu xa iipayipi ze-polyethylene zisetyenziselwa izicelo zokugcinwa kwamanzi. Xa kuthelekiswa nemibhobho yentsimbi ye-ductile, inzuzo ecacileyo kakhulu yeepayipi ze-polyethylene kukuba inokuthintela ukuvuza. Kukho iindidi ezimbini zokuvuza kombhobho: ukuvuza okudibeneyo, ukuvuza okugqabhukileyo kunye nokuvuza kwe-perforation, ekulula ukuphatha.

Ubungakanani beUmbhobho we-HDPEiphakathi kwe-1600 mm kunye ne-3260 mm, kwaye imibhobho emikhulu ekhoyo ngoku emarikeni ingasetyenziswa. Ukongeza kwiinkqubo zokubonelela ngamanzi kamasipala, iipayipi zeplastiki ezinobubanzi obukhulu ezenziwe nge-polyethylene nazo zingasetyenziselwa ukuchithwa kwamanzi olwandle kunye neendawo zokucocwa kwamanzi amdaka. Imibhobho emikhulu yobukhulu inokusuka kwi-315 cm ukuya kwi-1200 cm. I-diameter enkuluUmbhobho we-HDPeyomelele kwaye ithembekile. Emva kokungcwatywa emhlabeni, inokuqhuba amashumi eminyaka kwaye ifuna ukugcinwa okuncinci, ngoko ke ifaneleka kakhulu kwizicelo zokucoca amanzi amdaka. Ukuqina kombhobho we-polyethylene kwanda njengoko ubukhulu bawo bukhula, bubonisa ukusebenza okumangalisayo kokuchasana nokungcangcazela. Thatha inyikima ka-1995 e-Kobe eJapan njengomzekelo, iziseko zedolophu; yonke eminye imibhobho iyasilela kanye rhoqo nge-3 km, kwaye yonke inkqubo yemibhobho ye-HDPE inokusilela.

Iingenelo zombhobho we-HDPE: 1. Ukuzinza kakuhle kweekhemikhali: I-HDPE ayinayo i-polarity, ukuzinza kweekhemikhali ezilungileyo, ayizalisi i-algae kunye neebhaktheriya, ayilinganisi, kwaye iyimveliso ehambelana nokusingqongileyo. 2. Amandla okudibanisa okulungileyo: sebenzisa i-socket fusion yombane okanye i-butt joint thermal fusion, kunye namalungu ambalwa kwaye akukho kuvuza. 3. Ukumelana nokuhamba kwamanzi aphantsi: Umphezulu wangaphakathi weUmbhobho we-HDPeigudile, ine-coefficient yokumelana nokunxiba okuphantsi kunye nokuhamba okukhulu. 4. Ukuchasana kakuhle kwiqondo lokushisa eliphantsi kunye ne-brittleness: ukushisa kwe-brittleness (-40), kwaye amanyathelo akhethekileyo okukhusela awafuneki kukwakhiwa kweqondo lokushisa eliphantsi. 5. Ukuchasana kakuhle kwe-abrasion: Uvavanyo lokuthelekisa ukuchasana kwe-abrasion yeepayipi ze-polyethylene kunye neepayipi zetsimbi zibonisa ukuba ukuchasana kwe-abrasion yeepayipi ze-polyethylene ngamaxesha angama-4 kwimibhobho yensimbi. 6. Ukuchasana nokuguga kunye nobomi benkonzo ende: Umbhobho we-HDPE unokugcinwa okanye usetyenziswe ngaphandle iminyaka engama-50 ngaphandle kokulimala yimitha ye-ultraviolet.