Kodi kusintha kutentha kukana labala?

Kukana kukalamba kwa mpweya wotentha kapena kukalamba kwa kutentha kukukhala kofunika kwambiri, makamaka m'magalimoto opangira magalimoto kumene zigawo za rabala zimagwiritsidwa ntchito kwambiri m'malo ophimbidwa ndi kutentha kwakukulu. Opanga magalimoto amva kukakamizidwa kokulirapo kuti apereke moyo wautali wautumiki pazinthu zawo za rabara. Anaerobic kutentha kukalamba katundu ndi kutentha ndi mpweya kukalamba katundu ndi osiyana. Rabara imakhala ndi kukana kutentha kwabwino, koma sungathe kupirira kuukira kwa okosijeni.

Zindikirani: Ma protocol oyesa awa sangakhale okhudzana ndi vuto lililonse. Chilichonse mwazinthu zomwe zingapangitse kukana kukalamba kwa mpweya kapena kukalamba kwa kutentha zidzakhudzanso zinthu zina, kaya zabwino kapena zoipa.

1. Perfluoroelastomer

Ngati mphira ikufunika kuti ikhale ndi kutentha kwakukulu, muyenera kusankha labala wa perfluorinated. Akuti kutentha kwa perfluoroelastomer kumafika pa 316 ℃.

2, mphira wa fluorine

Fluorine mphira FKM ali kwambiri kutentha kukana, ndipo angagwiritsidwe ntchito pa kutentha mpaka 260 ℃. Kuti mupititse patsogolo kutentha kwakukulu kwa mphira wa fluorine, muyenera kusankha chovomerezeka cha asidi (zotengera asidi), monga magnesium oxide, magnesium oxide, calcium oxide, calcium hydroxide, zinc oxide, etc. Posankha bisphenol AF ngati vulcanization system, kukana kutentha kwa mphira kudzakhala bwino. Amagwiritsidwa ntchito m'malo ovuta amafuta a injini, kukana kukalamba kwa ternary fluoroelastomer wopangidwa kuchokera ku vinylidene fluoride, tetrafluoroethylene ndi propylene ndikobwino kuposa fluoroelastomer wamba. Izi zimachitika chifukwa cha kusintha kwa hexafluoropropylene ndi propylene mu njira ya polymerization.

3, HNBR

Kukwera kwa digiri ya hydrogenation, ndikokwanira kukana kutentha kwa HNBR, chifukwa pafupifupi palibe chomangira chapawiri chaunsaturated pa unyolo waukulu womwe umakhala wosakhazikika. Ma HNBR ena amatha kutenthedwabe ndi sulfure chifukwa akadali ndi zomangira ziwiri zopanda unsaturated. Komabe, ngati vulcanized ndi peroxide, kutentha kukana kwa pawiri kumakhala bwino. Pa rabala ya HNBR, TOTM imatha kuletsa kutentha kwambiri kuposa DOP chifukwa cha kutsika kochepa komanso kulemera kwa ma cell a mapulasitiki atatuwa.

4. Neoprene

W-mtundu wa neoprene uli ndi kukana kutentha kukalamba kuposa G-mtundu wa neoprene. Diphenylamine octanoate ndi antioxidant yabwino kwa neoprene, yomwe imatha kusintha bwino kukana kutentha.

5, EPDM

EPDM idzakhalabe ndi kukana kwabwino kwa kutentha pa 125 ℃ pambuyo pokwanira. Kugwiritsa ntchito peroxide vulcanized EPDM, kungapangitse mphira kukhala bwino kutentha kukana.

6, Low mamasukidwe akayendedwe nthunzi gawo njira EPDM

Mkulu ethylene zili ndi kopitilira muyeso-otsika mamasukidwe akayendedwe nthunzi gawo EPDM, akhoza kudzazidwa ndi ambiri fillers, chifukwa cha mkulu ethylene okhutira, processing safuna kujowina processing wa kutentha zosagwira mpweya ukalamba zoipa ndi utomoni, akadali akhoza kupanga mphira ndi katundu wabwino processing, kotero kwenikweni kutentha kukana kwa mphira bwino.

7. Pewani kugwiritsa ntchito utomoni wapamwamba wa styrene

Pewani kuwonjezera utomoni wapamwamba wa styrene ku rabala yomwe imagwiritsidwa ntchito kutentha kwambiri.

8, ufa wa Talcum

Mu rabara ya EPDM, sinthani 40% ya kaboni wakuda ndi talcum ufa, womwe ungapangitse kuti mphirayo asakalamba. Magulu ena a ufa wa talcum ali ndi zabwino zambiri kuposa dongo losamalidwa kapena losagwiritsidwa ntchito pankhaniyi.

9, Mkulu mamasukidwe akayendedwe plasticizer

Pakati pa ma plasticizers, mapulasitiki owoneka bwino kwambiri amatha kupatsa kutentha kukana kukalamba kuposa mapulasitiki otsika akukhuthala. Chifukwa pulasitiki wokhuthala kwambiri nthawi zambiri amakhala ndi kulemera kwakukulu kwa maselo, osavuta kusinthasintha, motero kukhazikika kwabwino komanso kukana kutentha kwabwino.

10, Kugwiririra mafuta ambewu kwa neoprene

Kuti neoprene ikhale yolimba, mafuta a canola amafunikira chifukwa ali ndi kukhuthala kochepa, zomwe zimapangitsa mphira kukhala ndi hysteresis yochepa komanso kutsika kochepa, zomwe zingapangitse mphira kukhala ndi kukana kukalamba.

11, EV/semi-effective SEV vulcanization system

Mu dongosolo logwira ntchito kapena lopanda mphamvu, chiŵerengero cha accelerator ndi sulfure ndichokwera kwambiri, ndiko kuti, 'kukwezedwa kwakukulu ndi sulfure yochepa' ndi 'sulfure ku thupi' m'malo mwa sulfure imodzi, mu dongosolo la vulcanization, gawo la mgwirizano umodzi wa sulfure ndi mgwirizano wa sulfure wa sulfure wowirikiza chifukwa cha mphira wopindika kwambiri, dongosolo, chiŵerengero cha mgwirizano umodzi wa sulfure ndi mgwirizano wa sulfure wa sulfure ndi wapamwamba kusiyana ndi mgwirizano wa sulfure wamitundu yambiri, motero, kukhazikika kwa kutentha kwa mphira kumakhala bwino ndipo kukana kukalamba kwa kutentha kumawonjezeka.

12, Zinc oxide

Vulcanization / sub-sulfuramide vulcanization system ya rabala, yodzaza ndi zinc oxide, imatha kupatsa mphira kutentha kwa ukalamba komanso kukana bwino pambuyo pa sulfure.

13, Peroxide vulcanized EPDM mphira

Mu peroxide vulcanized EPDM pawiri, ZMTI amasankhidwa ngati antioxidant, amene angapereke pawiri apamwamba modulus ndi kutentha kukana kukalamba.