Irabha ye-EPDM (ethylene propylene diene monomer)
Irabha ye-EPDMiyi-copolymer ye-ethylene, i-propylene kanye nenani elincane le-diene yesithathu ye-monomer non-conjugated.Igama lamazwe ngamazwe lithi: Ethyiene Propyene Diene Methyiene, noma i-EPDM ngamafuphi.Irabha ye-EPDM inhle kakhuluUkumelana ne-UV, ukumelana nesimo sezulu, ukumelana nokushisa ukuguga, ukumelana nokushisa okuphansi, ukumelana ne-ozone, ukumelana namakhemikhali, ukumelana namanzi, ukwahlukanisa kahle kukagesi nokunwebeka., nezinye izakhiwo ezingokomzimba nezomshini.Lezi zinzuzo azikwazi ukushintshwa ezinye izinto eziningi.
1. Ukumelana nesimo sezuluinamandla okumelana namakhaza ashubile, ukushisa, ukoma kanye nomswakama isikhathi eside, futhi inokumelana nokugqwala okuhle kakhulu ngokumelene nokuguguleka kweqhwa namanzi, okunganweba ngokuphelele impilo yesevisi yeminyango, amafasitela nezindonga zamakhethini.
2. Ukumelana nokuguga kokushisa kusho ukuthi kunokumelana okuqinile nokuguga komoya oshisayo.Ingasetshenziswa ku -40 ~ 120 ℃ isikhathi eside.Ingakwazi futhi ukugcina izici ezisebenzayo isikhathi eside ku-140 ~ 150 ℃.Ingakwazi ukumelana namazinga okushisa aphezulu angu-230 ~ 260℃ ngesikhathi esifushane.Ingadlala indima ekuqubukeni kwezakhiwo zasemadolobheni.Ukubambezeleka umphumela;kuhlanganiswe nokusetshenziswa kwefomula ekhethekile,Irabha ye-EPDMinomuzwa ofanayo ukusuka ku -50°C kuya ku-15°C.Lokhu kufakwa kwendawo yokukhiqiza kudale imiphumela esebenza kahle kakhulu.
3. NgobaI-EPDMinokumelana ne-ozone okuhle kakhulu, yaziwa nangokuthi "irabha engena-crack".Isetshenziswa ikakhulukazi ezakhiweni ezihlukahlukene zasemadolobheni ezinezinkomba ezihlukene zomkhathi futhi zivezwe ngokuphelele emoyeni.Izophinde ibonise ukuphakama komkhiqizo wayo.
4. Ukumelana nemisebe ye-ultraviolet kunikeza ukuvikelwa kwemvelo kubasebenzisi bezakhiwo eziphakeme;ikwazi ukumelana no-60 kuya ku-150Kv voltage, futhi inokumelana okuhle kakhulu kwe-corona, ukumelana nokuqhekeka kukagesi, nokumelana ne-arc.Izinga lokushisa eliphansi lokunwebeka, izinga lokushisa lapho umthamo we-tensile ufinyelela ku-100MPa ngu -58.8 ℃.
5. Ngenxa yezakhiwo zayo ezikhethekile zemishini, ivame ukusetshenziswa ekwenzeni izindiza, izimoto, izitimela, amabhasi, imikhumbi, amakhabethe okushintsha amandla kagesi aphezulu naphansi, izindonga zamakhethini engilazi, izingxenye zokuvala iwindi ze-aluminium alloy thermal insulation kanye nemikhiqizo yokutshuza, I-high-pressure steam soft Amapayipi, imigudu, amajoyinti e-viaduct nezinye izingxenye ezingangeni manzi nezinye izingxenye zokuvala izimboni nezolimo.
Izakhiwo ezikhethekile eziyinhloko kanye nemingcele yezobuchwepheshe
Ingxenye yerabha eminyene Ingxenye yerabha yesiponji
Izinga lokushisa elisebenzayo -40～140℃ -35～150℃
Ukuqina 50℃ 80℃ 10℃ 30℃
Ukuqina kokuqina (&) ≥10 -
Ubude ngesikhathi sekhefu(&) 200～600% 200～400%
Ukucindezela kusethe amahora angama-24 70(≯) 35% 40%
Ukuminyana 1.2–1.35 0.3–0.8
I-SILICON (irabha ye-silicone)
1. Ngenxa yezinzuzo zezici zesakhiwo seirabha ye-silicone, inamandla okugcina ukuzinza okuhle phakathi kwebanga lesikhathi esithile kanye nebanga elithile lokushisa.Uma kuqhathaniswa nabanye ozakwabo bokwenziwa, irabha ye-silicone ingakwazi ukumelana nezinga lokushisa eliphakeme kakhulu lika -101 kuya ku-316°C futhi igcine izici zayo zokucindezeleka.
2. Ezinye izici eziyingqayizivele zale elastomer yendawo yonke:ukumelana nemisebe, umthelela omncane womthamo wokubulala amagciwane;ukumelana nokudlidliza, isilinganiso esicishe sibe njalo sokudlulisela kanye nemvamisa ye-resonance ku -50 ~ 65°C;ukuphefumula okungcono kunamanye ama-polymers Impahla;amandla e-dielectric 500V · km-1;izinga lokudlulisa <0.1-15Ω·cm;khulula noma ugcine ukunamathela;lokushisa ablation 4982°C;ukukhishwa okuncane ngemuva kokuhlanganiswa okufanele;elula ukusetshenziswa ngaphansi kwemithetho yokulawula ukudla Ukugcwaliswa kokudla;izakhiwo ezivimbela amalangabi;imikhiqizo engenambala nengenaphunga ingakhiqizwa;izakhiwo ezingenamanzi;ukungabi namandla komzimba koshevu abahlanu kanye nezifakelo zezokwelapha.
3. Irabha ye-Siliconeingenziwa imikhiqizo yemibala ehlukahlukene ngokwezidingo zamakhasimende kanye nezidingo zobuciko.
I-Inkomba yezakhiwo eziphelele
Ibanga lokuqina 10～90
Amandla e-Tensile/MPa afika ku-9.65
Ubude/% 100～1200
Amandla wezinyembezi (DkB)/(kN·m﹣¹) Ubukhulu.122
I-elastometer ye-Bashaud 10 ~ 70
Ukucindezelwa unomphela ukuwohloka okungu-5% (isimo sokuhlola 180oC, 22H)
Ibanga lokushisa/℃ -101～316
3. I-TPV/TPE thermoplastic elastomer
I-Thermoplastic elastomer inezinto ezibonakalayo nezomshini zenjoloba eshibhile kanye nokucutshungulwa kwamapulasitiki athambile.Iphakathi nendawo phakathi kwepulasitiki nerabha.Mayelana nokucubungula, kuwuhlobo lwepulasitiki;ngokwezakhiwo, luhlobo lwenjoloba.I-Thermoplastic elastomers inezinzuzo eziningi ngaphezu kwamarabha we-thermoset.
1. Ukuminyana okuphansi kwe-thermoplastic elastomer(0.9~1.1g/cm3), ngaleyo ndlela yonga izindleko.
2.I-deformation yokucindezela ephansinokumelana nokukhathala okuhle kakhulu.
3. Ingakwazi ukushiselwa ngokushisa ukuze kuthuthukiswe ukuguquguquka komhlangano nokubeka uphawu.
4. Izinto ezilahlwayo (izibi ezibalekayo, imfucumfucu ekhishwayo) kanye nemikhiqizo kadoti yokugcina ekhiqizwe ngesikhathi senqubo yokukhiqiza ingabuyiswa ngokuqondile ukuze iphinde isetshenziswe, kuncishiswe ukungcoliswa kwemvelo nokwandisa imithombo yokuvuselela kabusha.Kuyimpahla ekahle eluhlaza futhi ehambisana nemvelo.
Isikhathi sokuthumela: Oct-31-2023