Rabala yopangidwa ndi zinthu zopangidwa ndi chimodzi mwa zinthu zitatu zazikulu zopangira ndipo imagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana amakampani, chitetezo cha dziko, mayendedwe, komanso moyo watsiku ndi tsiku. Rabala yopangidwa ndi zinthu zopangidwa ...
Zipangizo zapadera za mphira zopangidwa ndi mphira zimatanthauza zipangizo za mphira zomwe zimasiyana ndi zipangizo za mphira wamba ndipo zimakhala ndi zinthu zapadera monga kukana kutentha kwambiri komanso kotsika, kukana ukalamba, kukana kuchotsedwa kwa mpweya, komanso kukana mankhwala, makamaka mphira wa nitrile wopangidwa ndi hydrogenated (HNBR), thermoplastic vulcanizate (TPV), mphira wa silicone, mphira wa fluorine, mphira wa fluorosilicone, mphira wa acrylate, ndi zina zotero. Chifukwa cha zinthu zake zapadera, zipangizo zapadera za mphira zakhala zinthu zofunika kwambiri pakupanga njira zazikulu zadziko ndi madera atsopano monga ndege, chitetezo cha dziko ndi makampani ankhondo, zambiri zamagetsi, mphamvu, chilengedwe, ndi nyanja.
1. Mphira wa nitrile wopangidwa ndi hydrogenated (HNBR)
Mphira wa nitrile wothira hydrogenated ndi zinthu za rabara zodzaza kwambiri zomwe zimapezeka mwa kusakaniza bwino mayunitsi a butadiene pa unyolo wa rabara wa nitrile kuti ziwongolere kukana kutentha ndi kukana kukalamba kwa rabara wa nitrile butadiene (NBR). , chinthu chake chachikulu ndichakuti chingagwiritsidwe ntchito kwa nthawi yayitali pa 150 ℃, ndipo chimathabe kusunga zinthu zakuthupi komanso zamakanika kutentha kwambiri, zomwe zimatha kukwaniritsa zofunikira zapadera za kukana kutentha kwambiri ndi kukana mankhwala pazinthu zamagalimoto, ndege, mafuta ndi zina. Zofunikira, zomwe zimagwiritsidwa ntchito kwambiri, monga zisindikizo zamafuta zamagalimoto, zida zamagalimoto, malamba otumizira magalimoto, mabokosi ogwirira ntchito ndi ma pistoni a matope, zosindikizira ndi zozungulira za rabara za nsalu, zisindikizo zamlengalenga, zida zoyamwa shock, ndi zina zotero.
2. Thermoplastic Vulcanizate (TPV)
Ma thermoplastic vulcanizates, omwe amafupikitsidwa ngati ma TPV, ndi gulu lapadera la ma thermoplastic elastomers omwe amapangidwa ndi "dynamic vulcanization" ya zosakaniza zosasinthika za thermoplastics ndi elastomers, mwachitsanzo kusankha gawo la elastomer panthawi yosakaniza ndi thermoplastic Sexual cross-linking. Kuphatikizika kwa nthawi imodzi kwa gawo la rabara pamaso pa wothandizira wolumikizana (mwina ma peroxides, ma diamines, ma sulfure accelerators, ndi zina zotero) panthawi yosakanikirana ndi thermoplastics kumapangitsa kuti pakhale dynamic vulcanizate continuous thermoplastic matrix yokhala ndi rabara yolumikizidwa yogawidwa. Tinthu tating'onoting'ono mu gawoli, dynamic vulcanization imabweretsa kuwonjezeka kwa viscosity ya rabara, zomwe zimalimbikitsa kusintha kwa gawo ndikupereka mawonekedwe a multiphase mu TPV. TPV ili ndi magwiridwe antchito ofanana ndi rabara yosinthira kutentha komanso liwiro lokonza la thermoplastics, zomwe zimaonekera makamaka mu chiŵerengero cha magwiridwe antchito/mtengo wapamwamba, kapangidwe kosinthasintha, kulemera kopepuka, kutentha kogwira ntchito mosiyanasiyana, kukonza kosavuta, khalidwe la malonda ndi kukhazikika kwa magawo Ndipo ikhoza kubwezeretsedwanso, imagwiritsidwa ntchito kwambiri m'zigawo zamagalimoto, kapangidwe ka magetsi, zisindikizo ndi zina.
3. Rabala ya silikoni
Rabala ya silicone ndi mtundu wapadera wa rabala yopangidwa ndi polysiloxane yolumikizidwa ndi zodzaza zowonjezera, zodzaza zogwira ntchito ndi zowonjezera, ndipo imakhala ngati elastomer yofanana ndi netiweki pambuyo pa vulcanization pansi pa kutentha ndi kupsinjika. Ili ndi kukana kutentha kwambiri komanso kotsika, kukana nyengo, kukana ozone, kukana arc, kutchinjiriza magetsi, kukana chinyezi, kukana mpweya wambiri komanso kusakhala ndi mphamvu kwa thupi. Ili ndi ntchito zambiri m'makampani amakono, zamagetsi ndi zamagetsi, zamagalimoto, zomangamanga, zamankhwala, chisamaliro chaumwini ndi zina, ndipo yakhala chinthu chofunikira kwambiri pakuchita bwino kwambiri mu ndege, chitetezo ndi makampani ankhondo, kupanga zinthu mwanzeru ndi zina.
4. Rabala ya fluorine
Rabala ya fluorine imatanthauza zinthu za rabala zokhala ndi fluorine zomwe zili ndi maatomu a fluorine pa maatomu a kaboni a unyolo waukulu kapena unyolo wam'mbali. Makhalidwe ake apadera amatsimikiziridwa ndi mawonekedwe a maatomu a fluorine. Rabala ya fluorine ingagwiritsidwe ntchito pa 250°C kwa nthawi yayitali, ndipo kutentha kwakukulu kwa ntchito kumatha kufika 300°C, pomwe kutentha kochepa kwa ntchito ya EPDM yachikhalidwe ndi rabala ya butyl ndi 150°C yokha. Kuphatikiza pa kukana kutentha kwambiri, fluororubber ili ndi kukana mafuta bwino, kukana mankhwala, kukana asidi ndi alkali, ndipo magwiridwe ake onse ndi abwino kwambiri pakati pa zipangizo zonse za rabala za elastomer. Imagwiritsidwa ntchito makamaka pokana mafuta a maroketi, ma roketi, ndege, zombo, magalimoto ndi magalimoto ena. Magawo apadera monga kutseka ndi mapaipi osagwira mafuta ndi zinthu zofunika kwambiri pa chuma cha dziko komanso chitetezo cha dziko ndi mafakitale ankhondo.
5. Rabala ya acrylate (ACM)
Mphira wa acrylate (ACM) ndi elastomer yomwe imapezeka pogwiritsa ntchito copolymerization ya acrylate ngati monomer yayikulu. Unyolo wake waukulu ndi unyolo wodzaza ndi kaboni, ndipo magulu ake am'mbali ndi magulu a polar ester. Chifukwa cha kapangidwe kake kapadera, ili ndi makhalidwe abwino kwambiri, monga kukana kutentha, kukana ukalamba, kukana mafuta, kukana ozoni, kukana UV, ndi zina zotero, makhalidwe ake amakina ndi mphamvu zake zokonzera zinthu ndi abwino kuposa fluororubber ndi silicone rabara, ndipo kukana kutentha, kukana ukalamba ndi kukana mafuta ndi abwino kwambiri mu nitrile rabara. ACM imagwiritsidwa ntchito kwambiri m'malo osiyanasiyana otentha kwambiri komanso osagwiritsa ntchito mafuta, ndipo yakhala chinthu chotseka chomwe chapangidwa ndikulimbikitsidwa ndi makampani opanga magalimoto m'zaka zaposachedwa.
Nthawi yotumizira: Sep-27-2022
