Mbenje ndi mtundu wa zinthu zazitali za polict, pansi pa mphamvu yaying'ono yakunja, imatha kuwonetsa kufooka kwakukulu, ndipo mphamvu yakunja imachotsedwa, imatha kubwerera ku mawonekedwe ake oyambirirawo. Chifukwa cha kuchuluka kwa mphira, kumagwiritsidwa ntchito kwambiri pakusaka, kusindikizidwa kwamphamvu, ndi zina zambiri. Ndi kupita patsogolo kwa malonda, zinthu za mphira zayamba kugwiritsa ntchito mphira wachilengedwe ku rubbers osiyanasiyana.
1. Mpira wachilengedwe
Rabara wachilengedwe imalamulidwa ndi hybocarbons (polyusoprene), yokhala ndi mapuloteni ochepa, madzi, unyinji wa acin, shuga ndi mchere wa inrars. Nbzere ya chilengedwe imakhala ndi kutalika kwakukulu, mphamvu yayikulu yovuta, kusokoneza kwa misozi yabwino ndi kusokonezeka kwa magetsi, kuvala bwino kukana kugwirizanitsa ndi zida zina, ndipo ntchito yake ndiyabwino kwambiri kuposa mphira wa synthetics. Zolakwa zachilengedwe ndi kukana bwino kwa oxisgen ndi ozone, yosavuta ku ukalamba ndi kuwonongeka; kukana kwa mafuta ndi ma solst, kukana kotsika kwa asidi ndi alkali, kukana kochepa; Kutentha kochepa. Kutentha kosintha kwa mphira wachilengedwe: pafupifupi -60℃~ + 80℃. Rabara wachilengedwe imagwiritsidwa ntchito popanga matayala, nsapato za mphira, hoses, matepi, matepi, ma ring, ndi zinthu zina zambiri. Rabara wachilengedwe makamaka makamaka yopanga zitsulo zotsekemera, kuoneka ngati injini zowoneka bwino, makina ogwiritsira ntchito makina, ma meaphy, ndi zinthu zoumbidwa.
2. SBR
Sbr ndi wopopera wa bunadiene ndi styrene. Ntchito ya rabara ya styrene-butadiene ili pafupi ndi rabara wachilengedwe, ndipo ndiye kuti ndi gawo lalikulu kwambiri la mphira. Makhalidwe a styrene-buradiene rabar ndikuti amabzala kukana, kukanidwa ndi kutentheza kwa kutentha kwambiri, ndipo kapangidwe kake ndi yunifolomu kuposa mphira wachilengedwe. Zoyipa za rabara ya styrene-butadiene ndi: Kutalika kochepa, kusinthika kosavomerezeka, kuthawa kwamphamvu ndi kusokoneza misozi; Kugwiritsa ntchito molakwika magwiridwe antchito, makamaka modzipereka komanso mphamvu yotsika ya mphira. Kutentha kwa kutentha kwa styrene-butadiene rabara: pafupifupi -50℃~ + 100℃. Nbele ya styrene butadiene imagwiritsidwa ntchito m'malo mwa mphira wachilengedwe kuti apange matayala, ma sheet, hoses, nsapato za mphira ndi zina zambiri
3. Nitrile rabara
Nitrile rabara ndi wopopera wa bunadiene ndi acrylonile. Nitrile rabara imadziwika ndi kukana kwabwino kwambiri kwa mafuta am'mapapo, yachiwiri kokha kwa polysulfide mu mphira, pomwepo rabara ya nsalu ndi apamwamba kuposa anyani ena apamwamba. Kuzunza kwabwino, mpweya wabwino kulimba, kuvala kukana ndi kukana madzi, komanso kutsatira kwamphamvu. Zovuta za rabara za nitrile sizikuvuta kuzizira ndi kutsutsana kwa ozoni, mphamvu zochepa, zowoneka bwino, zosavomerezeka zamagetsi, komanso kukana kosauka kwa Porrotions. Kutentha kwa mphira wa Nitrile: pafupifupi -30℃~ + 100℃. Nyeta ya NITERI imagwiritsidwa ntchito popanga zinthu zosagwirizana ndi mafuta, monga hosse, zinthu zopindika, zosungunulira, etc.
4.. Hidrogenien nitrile rate
Nkhunga ya haidrojeni ya raitrile ndi wopopera wa bunadiene ndi acrylonile. Mbewu ya hydrile yolumikizidwa ndi ydrogening kwathunthu kapena pang'ono pang'ono. Hydrile ya raitrile imadziwika ndi mphamvu zapamwamba kwambiri komanso kukana kwa Abrasion, kukana kutentha kumakhala bwino kuposa NBR pomwe kumadutsa ndi peroxide, kapena zinthu zina ndizofanana ndi Nitroxile. Choyipa cha raibseenated Nitrile rate ndi mtengo wake wapamwamba. Kutentha kwa ma hydrogenien nitrile raby: pafupifupi -30℃~ + 150℃. Hidrile ya hadrile imagwiritsidwa ntchito makamaka yopanda mafuta komanso yopanda kutentha kwambiri.
5. Ethylene Proble
Ethylene Probruble ndi wopopera wa Ethlelene ndi Propylene, ndipo nthawi zambiri amagawika m'mabuku awiri a Yuan ethylene ma proble asylene Proplene Proplene Promplenes. Mbewu ya Ethylene-Propylene imadziwika ndi kukana bwino kwa ozoni, kukana kwa ultraviolet, kukana nyengo ndi kukana kolimba, koyamba. Nbele ya Ethylene-Propylene imasumiridwa, kukana kwa mankhwala, ma elasticty acid, alkali kukana, mphamvu yotsika, ndipo itha kugwiritsidwa ntchito podzaza kwambiri. Kutsutsa kutentha kumatha kufikira 150°C, ndipo imalimbana ndi ma ketoni a Porters, etter, ndi zina. Mphamvu zina zakuthupi ndi zamakina za Ethylene Proplene Problier pang'ono ndi rabara wachilengedwe komanso wopambana kuposa rayrene butadiene rabara. Choyipa cha kerani la ethylene-rayeyne ndichakuti chimakhala ndi zotsatsa zotsatsa komanso zomatirana, ndipo sizophweka kugwirira ntchito. Kutentha kwa ma propylene ma proby: pafupifupi -50℃~ + 150℃. Mbengani mphira-ethynene umagwiritsidwa ntchito ngati zibwenzi zamankhwala, waya ndi chingwe chopumira, pakhosi wa sterator, zinthu za rate-race.
6. Nyeta rabani
Silicone rabara ndi mphira wapadera wokhala ndi ulicon ndi ma atomu a okosijeni m'chipinda chachikulu. Silicon Element imachita mbali yayikulu mu rabara. Mikhalidwe yayikulu ya rabara sicone zonse ndi kutentha kwambiri (mpaka 300°C) ndi kutentha kwakanthawi kotsutsana (otsika -100°C). Pakadali pano pali mafuta osagwirizana kwambiri; Nthawi yomweyo, rabani rabara imakhala ndi chimbudzi chamagetsi komanso chokhazikika kwa oxidation ndi ozone. Imakhala yolimbana ndi kusiyanasiyana. Zoyipa za rabara za silicone ndizo mphamvu zotsika, mafuta osakanizika, zosungunulira, asidi ndi alkali kukana, kovuta kuvulaza, komanso chodula. Kutentha kwa mphira wogwira ntchito: -60℃~ + 200℃. Mbewu ya silicane imagwiritsidwa ntchito makamaka popanga kutentha kwambiri komanso kochepa, zisindikizo, etc.), komanso kutentha kwambiri. Chifukwa sichikhala chopondera komanso chopanda pake, silicone chogwiritsidwa ntchito mu chakudya ndi mafakitale.
7.. Polyurethane
Mbeta mphira uli ndi elastomer wopangidwa ndi polymerization wa polyester (kapena polyther) ndi mankhwala diisoctanite. Krairethane rabara imadziwika ndi kukana kwabwino kwa Abrasion, komwe ndiyabwino pakati pa mphira uliwonse; Mbengani mphira uli ndi mphamvu yayikulu, yabwino kwambiri komanso kukana mafuta. Mbewu ya polyurethane ndiyopambana kwambiri pakukaniza kwa ozoni, kukanidwa, ndi kulimba kwa mpweya. Zoyipa za rairethane raphi ndi madzi osokoneza kutentha, madzi osauka ndi alkali kukana, ndipo kukana kwa ma hydrocarbons, ndikuyipitsa ma ketoni, ndi mowa. Kugwiritsa ntchito kutentha kwa mphira wa polyurethane: pafupifupi -30℃~ + 80℃. Mbengani mphira umagwiritsidwa ntchito kupanga matayala pafupi ndi zigawo, gaskets, zinthu zowopsa, odzigudubuza, komanso zinthu zosagwirizana ndi mafuta.
Post Nthawi: Jul-07-2021
