Ɔkwan bɛn so na wobetumi ama rɔba a ɛko tia ɔhyew no atu mpɔn?
Mframa a ɛyɛ hyew a ɛbɔ akwakoraa anaa ɔhyew a ɛbɔ akwakoraa ne aberewa a wɔko tia no reyɛ nea ɛho hia kɛse, titiriw wɔ kar mu a wɔde rɔba afã horow di dwuma kɛse wɔ mmeae a wɔakata so a ɛhɔ yɛ hyew kɛse no. Wɔn a wɔyɛ kar no ate nhyɛso a ɛrenya nkɔanim nka sɛ wɔbɛhyɛ bɔ sɛ wɔbɛma wɔn rɔba afã horow no atra hɔ akyɛ. Anaerobic ɔhyew a ɛma obi nyin kyɛ ne ɔhyew ne mframa a ɛma obi nyin no yɛ soronko. Rɔba no tumi gyina ɔhyew ano yiye, nanso ebia ɛda so ara ntumi nnyina oxygen ntua ano.
Hyɛ no nsow: Ebia saa sɔhwɛ nhyehyɛe ahorow yi rentumi mfa asɛm pɔtee biara ho. Akyinnye biara nni ho sɛ nneɛma a ɛsakra a ebetumi ama mframa a ɛbɔ akwakoraa ne aberewa anaasɛ ɔhyew a ɛko tia no atu mpɔn no mu biara bɛka nneɛma afoforo, sɛ́ ɛyɛ papa anaasɛ enye.
1. Perfluoroelastomer a wɔde yɛ aduru
Sɛ wɔhwehwɛ sɛ rɔba ade no tumi gyina ɔhyew ano yiye a, ɛsɛ sɛ wopaw rɔba a perfluorine wom. Wɔbɔ amanneɛ sɛ ɔhyew a wɔde di dwuma wɔ perfluoroelastomer mu no kodu 316°C.
2、 Fluorine rɔba a wɔde yɛ adwuma
Fluorine rɔba FKM wɔ ɔhyew a ɛko tia yiye, na wobetumi de adi dwuma wɔ ɔhyew a ɛkɔ 260°C mu. Sɛnea ɛbɛyɛ a wobɛhyɛ ɔhyew a ɛkorɔn a ɛko tia fluorine rɔba no mu den bio no, ɛsɛ sɛ wopaw acid a ɛfata (a ɛtwetwe acid), te sɛ magnesium oxide a ɛnyɛ adwuma pii, magnesium oxide a ɛyɛ adwuma kɛse, calcium oxide, calcium hydroxide, zinc oxide, ne nea ɛkeka ho Fluoroelastomer mframa a ɛko tia ɔhyew a ɛko tia onyin adwumayɛ nso ye yiye, na ɔhyew a wɔde di dwuma no betumi ayɛ kɛse te sɛ 200°C na ɛwɔ hɔ. Ɛdenam bisphenol AF a wɔbɛpaw sɛ vulcanization nhyehyɛe no so no, ɔhyew a ɛko tia rɔba no bɛyɛ papa. Sɛ wɔde di dwuma wɔ engine mu ngo tebea a emu yɛ den mu a, ɔhyew a ɛko tia ternary fluoroelastomer a wɔde vinylidene fluoride, tetrafluoroethylene ne propylene ayɛ no ye sen fluoroelastomer a ɛwɔ hɔ nyinaa. Eyi fi hexafluoropropylene a wɔde propylene si ananmu wɔ polymerization nhyehyɛe no mu.
3、 HNBR na ɛwɔ hɔ
Dodow a hydrogenation no kɔ soro no, dodow no ara na HNBR ahoɔden a ɛko tia no ye, efisɛ ɛkame ayɛ sɛ unsaturated double bond biara nni nkɔnsɔnkɔnsɔn titiriw a entumi nnyina no so. HNBR ahorow bi da so ara tumi de sulfur vulcanized efisɛ wɔda so ara wɔ unsaturated abien nkitahodi ahorow bi. Nanso sɛ wɔde peroxide yɛ vulcanized a, ɔhyew a aduru no tumi gyina ano no bɛyɛ yiye. Wɔ HNBR rɔba ho no, TOTM tumi ma ɔhyew a ɛko tia yiye sen DOP esiane sɛ trioctyl plasticizers yi ntumi nsɛe pii na emu duru yɛ kɛse nti.
4. Neoprene a wɔde yɛ nnuru
W-type neoprene wɔ ɔhyew a ɛko tia onyin yiye sen G-type neoprene. Diphenylamine octanoate yɛ ade a ɛko tia ɔyare mmoawa a eye ma neoprene, a ebetumi ama ɔhyew a ɛko tia no atu mpɔn yiye.
5、 EPDM na ɛwɔ hɔ
EPDM bɛda so ara anya ɔhyew a ɛko tia yiye wɔ 125°C bere a ɛfata a ɛfata akyi. Peroxide vulcanized EPDM a wɔde di dwuma no, betumi ama rɔba no anya ɔhyew a ɛko tia yiye.
6、 Low viscosity vapor phase kwan EPDM
High ethylene content ne ultra-low viscosity vapor phase EPDM, betumi ahyɛ no ma ne dodow bi a ɛyɛ fillers, esiane ethylene dodow a ɛkɔ soro nti, dwumadie no nhia sɛ wɔde bɛka adwumayɛ a ɛfa ɔhyew-resistant mframa onyin a ɛnyɛ papa ne resin, da so ara betumi ama rɔba no ne processing su pa, enti ankasa ɔhyew a ɛko tia rɔba no tu mpɔn.
7、 Kwati sɛ wode styrene resin a ɛdɔɔso bedi dwuma
Kwati sɛ wode styrene resin a ɛdɔɔso bɛka rɔba a wɔde di dwuma wɔ ɔhyew a ɛkɔ soro mu no ho.
8、 Talcum aduru a wɔde yɛ aduru
Wɔ EPDM hose rɔba mu no, fa talcum powder si carbon black 40% ananmu, a ebetumi ama rɔba no ɔhyew a ɛko tia onyin no atu mpɔn. Talcum powder ahorow bi wɔ mfaso a ɛda nsow sen dɔte a wɔayɛ ho adwuma anaa wɔanyɛ ho adwuma wɔ eyi mu.
9、 Plasticizer a ɛyɛ den kɛse
Wɔ plasticizers mu no, plasticizers a ɛyɛ den kɛse betumi ama ɔhyew a ɛyɛ den a ɛko tia onyin yiye sen plasticizers a ɛnyɛ den pii. Efisɛ plasticizer a ɛyɛ viscosity kɛse no taa wɔ molecule mu duru kɛse, ɛnyɛ mmerɛw sɛ ɛbɛma ayɛ hyew, enti egyina pintinn yiye na ɛko tia ɔhyew yiye.
10、Mmonnaato aba ngo ma neoprene
Sɛnea ɛbɛyɛ a neoprene betumi atumi agyina ano yiye no, canola ngo ho hia efisɛ ɛnyɛ den pii, na ɛma rɔba no nya hysteresis a ɛba fam na ɛnyɛ den pii, na ɛno betumi ama rɔba no anya ahoɔden a ɛko tia onyin yiye.
11、EV/semi-etu mpɔn SEV vulcanization nhyehyɛe a etu mpɔn
Wɔ vulcanization nhyehyɛe a etu mpɔn anaasɛ ɛyɛ fã bi mu no, accelerator ne sulfur nsusuwii no yɛ kɛse, kyerɛ sɛ, 'high promotion ne low sulphur' nhyehyɛe, a 'sulphur kɔ nipadua no mu' sen sɛ ɛbɛyɛ sulfur biako, wɔ saa vulcanization nhyehyɛe yi mu no, sulfur bond biako ne sulfur abien bond wɔ vulcanized rɔba no mu kyɛfa no yɛ kɛse, esiane sɛ egyina pintinn Wɔ saa vulcanization yi mu nti nhyehyɛe no mu no, sulfur bond biako ne sulfur bond abien ntam nsonsonoe no korɔn sen nea ɛwɔ sulfur pii nkitahodi mu no, enti, ɔhyew a ɛko tia rɔba no tu mpɔn na ɔhyew a ɛko tia onyin no tu mpɔn.
12、Zinc oxide a wɔde yɛ adwuma
Vulcanization / sub-sulfuramide vulcanization nhyehyɛe a rɔba no, a zinc oxide pii ahyɛ mu ma no betumi ama rɔba no anya ɔhyew a ɛyɛ onyin su pa na ɛko tia sulfur akyi yiye.
13、Peroxide vulcanized EPDM rɔba
Wɔ peroxide vulcanized EPDM aduru no mu no, wɔpaw ZMTI sɛ nea ɛko tia ɔyare mmoawa, a ebetumi ama aduru no modulus a ɛkorɔn ne ɔhyew a ɛko tia onyin.
