Rabara yopangidwa ndi imodzi mwazinthu zazikulu zitatu zopangira ndipo imagwiritsidwa ntchito kwambiri pazinthu zosiyanasiyana zamakampani, chitetezo cha dziko, zoyendera komanso moyo watsiku ndi tsiku.Rabara wopangidwa mwaluso komanso wogwira ntchito ndi chinthu chofunikira kwambiri pakukula kwa nyengo yatsopano, komanso ndi njira yofunikira kwambiri mdziko muno.
Zida zapadera zopangira mphira zimatanthawuza zida za mphira zomwe ndizosiyana ndi mphira wamba ndipo zimakhala ndi zinthu zapadera monga kukana kutentha kwambiri komanso kutsika, kukana kukalamba, kukana kutulutsa, komanso kukana mankhwala, makamaka mphira wa hydrogenated nitrile (HNBR), thermoplastic vulcanizate (TPV) , mphira wa silicone, mphira wa fluorine, mphira wa fluorosilicone, mphira wa acrylate, ndi zina zotero. mauthenga apakompyuta, mphamvu, chilengedwe, ndi nyanja.
1. Hydrogenated nitrile raba (HNBR)
Rabara ya nitrile ya haidrojeni ndi mphira wodzaza kwambiri womwe umapezedwa posankha hydrogenating mayunitsi a butadiene pa unyolo wa rabala wa nitrile ndi cholinga chothandizira kukana kutentha komanso kukana kukalamba kwa mphira wa nitrile butadiene (NBR)., mbali yake yaikulu ndi yakuti angagwiritsidwe ntchito kwa nthawi yaitali pa 150 ℃, ndipo akhoza kukhalabe mkulu thupi ndi makina katundu pa kutentha kwambiri, amene angathe kukwaniritsa zofunika zapadera kutentha kukana ndi kukana mankhwala a zipangizo mu galimoto. , mlengalenga, malo opangira mafuta ndi madera ena.Zofunikira, zomwe zimagwiritsidwa ntchito mochulukirachulukira, monga zisindikizo zamafuta amagalimoto, zida zamagalimoto, malamba otumizira magalimoto, kubowola mabokosi ndi ma pistoni amatope, zosindikizira zosindikizira ndi mphira wansalu, zisindikizo zamlengalenga, zida zamagetsi, ndi zina zambiri.
2. Thermoplastic Vulcanisate (TPV)
Thermoplastic vulcanizates, yofupikitsidwa ngati TPVs, ndi gulu lapadera la thermoplastic elastomers omwe amapangidwa ndi "dynamic vulcanization" ya immiscible zosakanikirana za thermoplastics ndi elastomers, mwachitsanzo kusankha kwa elastomer gawo pa kusungunuka kusakanikirana ndi thermoplastic Kugonana kolumikizana.Munthawi yomweyo vulcanization wa gawo mphira pamaso pa crosslinking wothandizira (mwina peroxides, diamines, sulfure accelerators, etc.) pa kusungunula kusakaniza ndi thermoplastics zotsatira zamphamvu vulcanizate mosalekeza thermoplastic masanjidwewo wopangidwa ndi obalalika crosslinked mu gawo particles. vulcanization imabweretsa kuwonjezeka kwa kukhuthala kwa mphira, komwe kumalimbikitsa kusinthika kwa gawo ndikupereka ma morphology ambiri mu TPV.TPV ili ndi magwiridwe antchito ofanana ndi mphira wa thermosetting komanso kuthamanga kwa ma thermoplastics, omwe amawonetsedwa makamaka ndi magwiridwe antchito / chiŵerengero chamtengo, mawonekedwe osinthika, kulemera kwake, kusiyanasiyana kwa kutentha kwapang'onopang'ono, kukonza kosavuta, kukhazikika kwazinthu ndi kukhazikika kwazithunzi Ndipo zobwezeretsanso, zambiri. amagwiritsidwa ntchito m'zigawo zamagalimoto, kupanga magetsi, zisindikizo ndi zina.
3. Mpira wa silicone
Rabara ya silicone ndi mtundu wapadera wa mphira wopangira womwe umapangidwa ndi liniya polysiloxane wosakanikirana ndi zowonjezera zolimbitsa thupi, zodzaza ntchito ndi zowonjezera, ndipo zimakhala ngati elastomer ya netiweki ikatenthedwa ndi kutentha komanso kupanikizika.Ili ndi kukana kutentha kwambiri komanso kutsika kwambiri, kukana kwanyengo, kukana kwa ozoni, kukana kwa arc, kutchinjiriza kwamagetsi, kukana chinyezi, kuchuluka kwa mpweya komanso kukhazikika kwa thupi.Ili ndi ntchito zosiyanasiyana m'makampani amakono, zamagetsi ndi zamagetsi, zamagalimoto, zomangamanga, zamankhwala, chisamaliro chamunthu ndi magawo ena, ndipo yakhala chinthu chofunikira kwambiri chotsogola kwambiri muzamlengalenga, chitetezo ndi mafakitale ankhondo, kupanga mwanzeru ndi magawo ena. .
4. Labala ya fluorine
Labala ya fluorine imatanthawuza mphira wokhala ndi fluorine wokhala ndi maatomu a fluorine pamaatomu a kaboni a unyolo waukulu kapena unyolo wam'mbali.Makhalidwe ake apadera amatsimikiziridwa ndi mawonekedwe a maatomu a fluorine.Labala ya fluorine imatha kugwiritsidwa ntchito pa 250 ° C kwa nthawi yayitali, ndipo kutentha kwambiri kwautumiki kumatha kufika 300 ° C, pomwe kutentha kwanthawi yayitali kwa EPDM ndi mphira wa butyl ndi 150 ° C kokha.Kuphatikiza pa kukana kutentha kwambiri, fluororubber ili ndi kukana kwambiri kwamafuta, kukana kwamankhwala, asidi ndi alkali kukana, ndipo magwiridwe ake athunthu ndi abwino kwambiri pakati pa zida zonse za mphira elastomer.Amagwiritsidwa ntchito makamaka pakukana mafuta a roketi, zoponya, ndege, zombo, magalimoto ndi magalimoto ena.Minda ya zolinga zapadera monga kusindikiza ndi mapaipi osamva mafuta ndi zida zofunika kwambiri pazachuma cha dziko komanso chitetezo cha dziko ndi mafakitale ankhondo.
5. Acrylate rabara (ACM)
Acrylate rabara (ACM) ndi elastomer yopezedwa ndi copolymerization ya acrylate monga monomer wamkulu.Unyolo wake waukulu ndi unyolo wa carbon saturated, ndipo magulu ake akumbali ndi magulu a polar ester.Chifukwa cha mawonekedwe ake apadera, ili ndi makhalidwe abwino kwambiri, monga kukana kutentha, kukana kukalamba, kukana kwa mafuta, kukana kwa ozoni, kukana kwa UV, ndi zina zotero, makina ake ndi zinthu zopangira zinthu zimakhala bwino kuposa mphira wa fluororubber ndi silikoni, komanso kutentha kwake. , kukana kukalamba ndi kukana mafuta ndizabwino kwambiri.mu mphira wa nitrile.ACM imagwiritsidwa ntchito kwambiri m'malo osiyanasiyana otentha komanso osamva mafuta, ndipo yakhala chinthu chosindikizira chopangidwa ndikulimbikitsidwa ndi makampani amagalimoto m'zaka zaposachedwa.
Nthawi yotumiza: Sep-27-2022
