Khuluma nawe mayelana nezakhiwo eziyinhloko kanye nokusetshenziswa kwe-polypropylene (PP).
Okokuqala, yini i-polypropylene?I-Polypropylene isifushanisiwe ngokuthi “PP”.Kuyi-resin ye-thermoplastic enokumiswa okujwayelekile futhi ephezuluELECTRIC THERMAL ACTUATOR(i-crystallinity iphezulu njenge-95%) eyenziwe i-polymerized kusuka ku-propylene.Ingahlukaniswa ngokubumba komjovo we-PP, umdwebo wocingo we-PP, i-PP fiber, ifilimu ye-PP, ipayipi le-PP.Phakathi kwamapulasitiki avame ukusetshenziswa empilweni, i-polypropylene ingenye yezinhlobo ezilula kakhulu.
Ngezansi izici ze-polypropylene:
1. Izakhiwo zomzimba: ezingenabuthi, ezingenaphunga, ezingenakunambitheka, ezimhlophe njenge-milky kanye nokuminyana kwekristalu okuphezulu 0.9-0.91g/cm3 kuphela, ukuzinza okuhle emanzini.
2. Ukusebenza okushisayo: Inokumelana nokushisa okuhle, futhi imikhiqizo yayo ingafakwa inzalo emazingeni okushisa angaphezu kuka-100 °C, futhi ngeke ikhubazeke ku-150 °C ngaphandle kwamandla angaphandle.Izinga lokushisa le-embrittlement lingu-35 °C, futhi i-embrittlement kwenzeka ngaphansi kuka -35 °C, futhi ukumelana nokubanda akukuhle njenge-polyethylene.
3. Ukuzinza kwamakhemikhali: Ukuzinza kwamakhemikhali kuhle kakhulu.Ngaphezu kokugqwala yi-concentrated sulfuric acid kanye ne-concentrated nitric acid, izinzile kwamanye ama-reagents amakhemikhali, kodwa ama-aliphatic hydrocarbons anesisindo esiphansi samangqamuzana, ama-hydrocarbon anephunga elimnandi nama-hydrocarbon ane-chlorine angenza i-polymer Propylene ithambe futhi ivuvuke, futhi ukuqina kwayo kwamakhemikhali kuyanda ukwanda kwe-crystallinity, ngakho-ke i-polypropylene ifaneleka ukwenza amapayipi amakhemikhali ahlukahlukene kanye nokufakwa, futhi inomphumela omuhle wokulwa nokugqwala.
4. Izakhiwo zikagesi: Ine-coefficient ephezulu ye-dielectric, futhi ngokukhuphuka kwezinga lokushisa, ingasetshenziswa ukwenza imikhiqizo yokushisa kagesi eshisayo.Iphinde ibe ne-voltage ephezulu yokuphuka futhi ifanele ukusetshenziswa njengezesekeli zikagesi, njll. Inokumelana kahle ne-voltage ne-arc, kodwa inogesi omile ophakeme, futhi kulula ukuguga uma ihlangene nethusi.
I-Polypropylene isetshenziswa kabanzi kuzo zombili izinto zikagesi zasendlini namapayipi epulasitiki.Imishini yasendlini ithuthuke ngokushesha eminyakeni yamuva, inezinhlobonhlobo eziningi kanye nomkhiqizo omkhulu.Ngakho-ke, eminyakeni embalwa ezayo, ukuthuthukiswa kwezinto ezikhethekile ze-PP zemishini yasendlini kuzokwandiswa ukuze kuhlangatshezwane nezidingo ezishintshayo zemakethe.
Ngo-2003, inani eliphelele likazwelonke lokukhishwa kwamapayipi epulasitiki ladlula amathani ayizigidi eziyi-1.8, okuwukukhula konyaka ngama-23%.Ezinsukwini zakuqala, amapayipi e-PP ayesetshenziswa kakhulu njengamapayipi amanzi ezolimo, kodwa imakethe yehlulekile ukuvuleka ngenxa yezinkinga ezithile ekusebenzeni kwemikhiqizo yakuqala (amandla omthelela kanye nokungagugi kahle).Kodwa ngokwethulwa kobuchwepheshe, imakethe iye yaqashelwa kancane kancane.Amapayipi epulasitiki angomunye wemikhiqizo ebalulekile yokukhuthaza nokusebenzisa izinto zokwakha zamakhemikhali ezweni lami.UMnyango Wezokwakha ukhiphe “Isaziso Sokuqinisa Ukuphathwa Kokukhiqiza kanye Nokukhuthaza kanye Nokusetshenziswa Kwemibhobho Ye-Copolymerized Polypropylene (PP-R, PP-B)” ngo-2001, edinga iminyango efanele Isebenzisana ukwenza umsebenzi omuhle ngezinto ezingavuthiwe, ukucubungula, izinga ekusetshenzisweni kwamapayipi nokufakwa, nokulawula ngokuqinile ikhwalithi yamapayipi e-PP, ukuze ngenze kangcono umsebenzi omuhle ekukhiqizeni, ekusetshenzisweni nasekukhuthazeni amapayipi e-PP ezweni lami.
Ngokuthuthukiswa kwamazinga okuphila abantu, kuwumkhuba omuhle wentuthuko ukuthuthukisa izinto ezikhethekile ze-PP ezibonisa ngale, ikakhulukazi izinto ezikhethekile ze-PP ezinokucaca okuphezulu, uketshezi oluhle, nokwakheka okusheshayo kuyadingeka ukuze udizayine futhi ucutshungulwe zibe yimikhiqizo eyintandokazi yabantu ye-PP.I-PP esobala igqame kakhulu kune-PP evamile, i-PVC, i-PET, i-PS, futhi inezinzuzo eziningi namathemba entuthuko.Njengamanje, kunegebe elikhulu phakathi kwezinto ezikhethekile ze-PP esobala zasekhaya kanye namazwe angaphandle, futhi ukukhiqizwa kanye nokusetshenziswa kwe-PP resin esobala kanye nemikhiqizo yayo kusadingeka kuqiniswe.
Ngaphezu kwalokho, i-polypropylene nayo isetshenziselwa ukwelula ifilimu ye-PP nokunye.
Isikhathi sokuthumela: Sep-24-2022