isicelo

Inqubo yokukhiqiza ipayipi le-polyethylene iyindlela yokukhipha izinto ze-granular ezingeniswa ku-extruder nokushisa.

Ukukhiqizwa kwamapayipi e-polyethylene

Izinto ezisetshenziswayo zibe sezicutshungulwa yisikulufu (i-spiral rod) ukuze iphushwe bese ikhishwa ku-extruder iye esikhunjeni.Ukudla okuphekwe ngemva kokushiya isikhunta, i-cross calibrator kanye ne-vacuum tank pressure yakheke ngendlela efanele.Lapho uphuma endaweni ye-calibrator tube by izendlalelo zokugeleza kwamanzi kuyapholiswa.
Izinga lokushisa eliphezulu elincibilikisiwe le-polyethylene ithange ngemva kokususwa esikhunjini ku-vacuum bese kancane kancane amathangi okupholisa ancishiswe ngokusebenzisa amanzi abandayo.
izilinganiso ezithile kanye nokusika.
Yonke inqubo yokukhiqiza i-othomathikhi ngokugcwele ngamadivayisi alawula futhi aqaphe ikhwalithi yomkhiqizo wokugcina iyamukeleka futhi igama lenkampani kanye namazinga.
Ukuhlola ukukhiqizwa kwepayipi le-polyethylene okujwayelekile
Izigaba zokuhlola ukukhiqizwa kwamapayipi e-PE zimi kanje:
I-Melt flow index (INSO 6980-1)
Ukunquma ukuminyana (INSO 7090-1)
Ukunqunywa kwensimu (ISO 6964)
Ukusatshalaliswa komsizi (ISO 18553)
Ukuhlolwa kwe-Tensile (ISO 6259-1,3)
Ukuhlolwa kwengcindezi ye-Hydrostatic (ISIRI 12181-1,2)
Ukuhlolwa kwengcindezi yokuqhuma (ASTM D 1599)
Buyela ekuhlolweni kwe-thermal (INSO 17614)
Ishubhu yokuhlola yokulinganisa nokubonwayo (INSO 2412)
Ukuhlolwa kokuzinza kwe-thermal phambi kwe-oxygen OIT (ISIRI 7186-6)

I-Melt flow index (INSO 6980-1):
Kulesi sivivinyo, izinga lokugeleza lokuncibilika kwempahla lilinganiswa ngesikhathi esimisiwe kanye nezinga lokushisa, emiphumeleni, indlela yokusingatha izinto ngaphakathi kwe-extruder kufanele icatshangelwe.
Ukuhlolwa kwempahla eluhlaza (ukuqinisekisa ikhwalithi yezinto) kanye nasemkhiqizweni.Inani le-MFI lomkhiqizo akufanele libe ngaphezu kuka-20% ± impahla eluhlaza ihlukile i-MFI.
• Inquma ukuminyana (INSO 7090-1)
Ukuminyana kwezinto zokusetshenziswa nezindlela zokuntanta komkhiqizo kusetshenziswa ibhalansi enembile yoketshezi enobuningi obuthile kuyanqunywa.“Ukuminyana kwenombolo yomkhiqizo, ikhwalithi yenqubo yokukhiqiza.
• ukunqunywa kwensimu (ISO 6964) kanye nokusatshalaliswa komsizi (ISO18553)
Umsizi ezintweni zokusetshenziswa kanye nomkhiqizo wokugcina unqunywa.
Iphesenti elivunyelwe lekhabhoni emnyama epayipini le-polyethylene 2 kuya ku-5.2% wesisindo okufanele lisatshalaliswe ngokulinganayo kulo lonke.

• Ukuhlola (ISO 6259-1,3)
Kusetshenziswa ilabhorethri ekhethekile, izakhiwo zemishini zamapayipi e-polyethylene, kufaka phakathi amandla amakhulu ngokumelene nomthwalo wangaphandle, ukwelula ngesikhathi sekhefu, i-coefficient of elasticity kanye nokuphambuka ngaphansi kwemithwalo enamaphuzu amathathu kungalinganiswa futhi ngokuya ngemiphumela yokuhlolwa, singahlola ukusebenza komkhiqizo ngesikhathi sokusebenza.
• Ukuhlolwa kwengcindezi ye-Hydrostatic (ISIRI 12181-1,2)
Ukuze kuhlolwe amandla omkhiqizo ngokumelene nokuhlolwa kwengcindezi ye-hydrostatic kwenziwa., ibekwe ngaphansi kwengcindezi yangaphakathi engapheli.
Noma ikuphi ukonakala kumasampula (ukuqhekeka, ukuqhuma, ukuvuvukala kwendawo, ukuvuza kanye nokuqhekeka okuhle) okusho ukuthi umkhiqizo wehlulekile.
• Ukuhlolwa kwe-Burst pressure (ASTM D 1599)
Kulesi sivivinyo, isampula yeshubhu elintantayo echibini elinokushisa okungaguquki okungu-23 ° C bese lifakwa ngaphansi kwengcindezi yangaphakathi ekhulayo, ukuze ngokuhamba kwesikhathi imizuzwana engama-60 kuye kwengama-70, ikhukhumale bese ibangela ukuqhekeka.

Ishubhu ngaphandle kokuqhekeka noma ukugoqa nge-longitudinal slot ayiphephile ukusetshenziswa.
• Ukuhlolwa kokushisisa emuva (ISO 2505)
Ubude obulinganiselwe bamasampula angama-20 cm bube yinto eyodwa, ngokujikeleza komoya oshisayo (2 ± 110) ° C ihora elilodwa kuya kwamathathu (ngokobukhulu bodonga lwamapayipi), futhi ngemuva kokupholisa ubude obunjalo beshubhu, buyoba ngaphansi isimo sokuqala ekushiseni okujwayelekile, okungaholela ekushintsheni kwamapayipi okuziphatha afakwe kumjikelezo wepayipi, ngakho-ke umkhawulo wokuhlola ongenhla izinguquko ze-longitudinal (kufika ku-3%) elabhorethri.

• ishubhu yokuhlola yokulinganisa nebonwayo (INSO 2412)
Amapayipi e-polyethylene akumele angabi nabulukhuni (ngaphakathi nangaphezulu) nezimbotshana ezijulile.Ama-dent amancane uma enganciphisi ukushuba kube ngaphansi komkhawulo, awanakwa.
Ukuqokwa okuqondile kogqinsi lwamapayipi kusetshenziswa i-ultrasonic gauge yegeji elinganisiwe yama-caliper esigabeni sokusika ngesikhathi secilongo.
Ububanzi bangaphandle beshubhu kusetshenziswa amabhande ensimbi asezingeni (Sykrvmtr) kanye naseduze kwegatsha kuye kwalinganiswa futhi inani elimaphakathi liyabikwa.