I-EPDM (i-ethylene propylene diene monomer) irabha
Irabha ye-EPDMi-copolymer ye-ethylene, ipropylene kunye nexabiso elincinci le-diene ye-monomer yesithathu engaxutywanga.Igama lamazwe ngamazwe ngu: Ethyiene Propyene Diene Methyiene, okanye EPDM ngokufutshane.Irabha ye-EPDM inokugqwesaUkuxhathisa kwe-UV, ukumelana nemozulu, ukumelana nokuguga kobushushu, ukumelana nobushushu obuphantsi, ukunganyangeki kwe-ozone, ukuxhathisa kweekhemikhali, ukunganyangeki kwamanzi, ukugqunyelelwa kakuhle kombane kunye nokunwebeka., kunye nezinye iimpawu zomzimba kunye noomatshini.Ezi zibonelelo azinakuthathelwa indawo zezinye izinto ezininzi.
1. Ukumelana nemozuluinamandla okumelana nengqele eqhaqhazelisa amazinyo, ubushushu, ukoma kunye nokufuma ixesha elide, kwaye inokumelana ne-corrosion ebalaseleyo ngokuchasene nokukhukuliseka kwekhephu namanzi, okunokwandisa ngokupheleleyo ubomi benkonzo yeengcango, iifestile kunye neendonga zamakhethini.
2. Ukumelana nokuguga kobushushu kuthetha ukuba kunokumelana ngokuqinileyo nokuguga komoya oshushu.Ingasetyenziswa kwi -40 ~ 120 ℃ ixesha elide.Inokugcina iimpawu ezisebenzayo ixesha elide kwi-140 ~ 150 ℃.Iyakwazi ukumelana nobushushu obuphezulu be-230 ~ 260℃ ngexesha elifutshane.Ingadlala indima kuqhushululu lwezakhiwo zasedolophini.Isiphumo sokulibazisa;idityaniswe nokusetyenziswa kwefomula ekhethekileyo,Irabha ye-EPDMinemvakalelo efanayo ukusuka ku -50°C ukuya kwi-15°C.Olu fakelo lwendawo yemveliso ludale iziphumo eziphezulu.
3. NgokubaEPDMinokumelana okugqwesileyo kwe-ozone, ikwabizwa ngokuba yi "rabha engena-crack".Isetyenziswe ngokukhethekileyo kwizakhiwo ezahlukahlukeneyo zasezidolophini ezinezalathisi ezahlukeneyo ze-atmospheric kwaye zibonakaliswe ngokupheleleyo emoyeni.Kwakhona iya kubonisa ukongama kwemveliso yayo.
4. Ukumelana nemisebe ye-ultraviolet kunika ukukhuselwa kwendalo kubasebenzisi bezakhiwo eziphakamileyo;inokumelana ne-60 ukuya kwi-150Kv yombane, kwaye inokumelana ne-corona ebalaseleyo, ukumelana nokuqhekeka kombane, kunye nokumelana ne-arc.Ubushushu obuphantsi, ubushushu xa umthamo we-tensile ufikelela kwi-100MPa yi -58.8 ℃.
5. Ngenxa yeempawu zayo ezibalaseleyo ezikhethekileyo zoomatshini, zihlala zisetyenziselwa ukwenziwa kweenqwelomoya, iimoto, oololiwe, iibhasi, iinqanawa, iikhabhathi zokutshintsha amandla ombane aphezulu naphantsi, iindonga zamakhethini eglasi, i-aluminium alloy thermal insulation partitioning window kunye neemveliso zokuntywila, Uxinzelelo oluphezulu lwemibhobho ethambileyo yomphunga, itonela, i-viaduct joints kunye nezinye iindawo ezingangeni manzi kunye nezinye iindawo zoshishino kunye nezolimo zokutywinwa.
Iipropati ezikhethekileyo eziphambili kunye neeparitha zobugcisa
Inxalenye yerabha eshinyeneyo Inxalenye yerabha yesiponji
Ubushushu obusebenzayo -40～140℃ -35～150℃
Ukuqina 50～80℃ 10℃30℃
Ukuqina kokuqina (&) ≥10 -
Ukwandiswa ngexesha lekhefu(&) 200～600% 200～400%
Uxinzelelo luseti iiyure ezingama-24 70(≯) 35% 40%
Uxinaniso 1.2–1.35 0.3–0.8
1. Ngenxa yeenzuzo zeempawu zesakhiwoirabha ye-silicone, inamandla okugcina uzinzo oluhle phakathi kwexesha elithile kunye nomlinganiselo othile wokushisa.Xa kuthelekiswa namanye amaqabane okwenziwa, i-rubber ye-silicone inokumelana nemigangatho yokushisa kwe-ultra-101 ukuya kwi-316 ° C kwaye igcine iimpawu zayo zoxinzelelo.
2. Ezinye iimpawu ezizodwa zale elastomer yehlabathi:ukumelana nemitha, impembelelo encinci yedosi yokubulala iintsholongwane;ukuxhathisa ukungcangcazela, isantya sothumelo esiphantse siqhubeke kunye nokuphindaphinda kwe-resonance kwi -50 ~ 65 ° C;ukuphefumla ngcono kunezinye iipolima Ipropati;amandla e-dielectric 500V · km-1;izinga losulelo <0.1-15Ω·cm;khulula okanye ugcine ukunamathela;iqondo lobushushu le-4982°C;ukukhupha okuncinci emva kokudibanisa okufanelekileyo;kulungele ukusetyenziswa phantsi kwemimiselo yokulawula ukutya Ukuzaliswa kokutya;iimpawu zokunqanda amadangatye;iimveliso ezingenambala nezingenavumba zinokuveliswa;iipropati ezingenamanzi;inertness ye-physiological yetyhefu ezintlanu kunye nokufakelwa kwezonyango.
3. Irabha yeSiliconeinokwenziwa kwiimveliso zemibala eyahlukeneyo ngokweemfuno zabathengi kunye neemfuno zobugcisa.
Iipropathi zokoqobo ze-Index
Uluhlu lobunzima 10～90
Amandla okuqina/MPa ukuya kuthi ga kwi-9.65
Ukwandiswa/% 100～1200
Amandla eenyembezi (DkB)/(kN·m﹣¹) Makhulu.122
Bashaud elastometer 10～70
Ukunyanzeliswa deformation esisigxina 5% (imeko yovavanyo 180oC, 22H)
Uluhlu lobushushu/℃ -101～316
3. TPV/TPE thermoplastic elastomer
I-Thermoplastic elastomer ineempawu zomzimba kunye nezomatshini zerabha evulziweyo kunye nokuqhubekeka kweeplastiki ezithambileyo.Yindawo ethile phakathi kweplastiki kunye nerabha.Ngokumalunga nokucutshungulwa, luhlobo lweplastiki;ngokubhekiselele kwiipropati, luhlobo lwerabha.I-Thermoplastic elastomers ineenzuzo ezininzi ngaphezu kweerubha ze-thermoset.
1. Ubuninzi obuphantsi be-thermoplastic elastomer(0.9 ~ 1.1g/cm3), ngaloo ndlela ukonga iindleko.
2.Ukuguqulwa koxinzelelo oluphantsikunye nokumelana nokudinwa okugqwesileyo.
3. Inokuthi ifakwe kwi-thermal ukuze iphucule ukuguquguquka kwendibano kunye nokutywinwa.
4. Izinto ezilahlwayo (i-escaping burrs, extrusion waste materials) kunye neemveliso zenkunkuma yokugqibela ezenziwe ngexesha lenkqubo yokuvelisa zinokubuyiswa ngokuthe ngqo ukuze zisetyenziswe kwakhona, ukunciphisa ukungcoliseka kwendalo kunye nokwandisa imithombo yobutyebi bokurisayikilisha.Yimpahla efanelekileyo eluhlaza kunye nokusingqongileyo.
Ixesha lokuposa: Oct-31-2023