Chloroprene rabara (CR), yomwe imadziwikanso kuti mphira wa chloroprene, ndi elastomer yopangidwa ndi alpha polymerization ya chloroprene (ie, 2-chloro-1,3-butadiene) monga zopangira zazikulu.Linapangidwa koyamba ndi Wallace Hume Carothers wa ku DuPont pa Epulo 17, 1930. DuPont idalengeza poyera mu Novembala 1931 kuti idapanga mphira wa chloroprene ndikuwubweretsa pamsika mu 1937, kupanga mphira wa chloroprene kukhala woyamba kupanga mphira wopangidwa m'mafakitale. .
Chloroprene mphira katundu.
Maonekedwe a Neoprene ndi amkaka oyera, beige kapena zofiirira zofiirira kapena zotupa, kachulukidwe 1.23-1.25g/cm3, kutentha kwa galasi: 40-50 ° C, malo ophwanyika: 35 ° C, kufewetsa pafupifupi 80 ° C, kuwonongeka kwa 230- 260 ° C.Kusungunuka mu chloroform, benzene ndi zosungunulira zina organic, kutupa mu masamba mafuta ndi mchere mafuta osasungunuka.80-100 ° C angagwiritsidwe ntchito kwa nthawi yaitali, ndi mlingo wina wa retardancy lawi.
Neoprene labala ndi kapangidwe ka mphira wachilengedwe ndizofanana, kusiyana kwake ndikuti gulu lamagetsi loyipa la neoprene limalowa m'malo mwa gulu la methyl mu mphira wachilengedwe, zomwe zimathandizira kukana kwa ozoni, kukana kwamafuta ndi kukana kutentha kwa mphira wa neoprene.Mwachidule, ali ndi nyengo yabwino kukana, ozoni kukana, mankhwala dzimbiri kukana, mafuta kukana, etc. ake mabuku thupi ndi makina katundu ndi bwino.Chifukwa chake, neoprene imakhala yosunthika kwambiri, monga mphira wokhazikika komanso ngati mphira wapadera.
The waukulu thupi ndi makina katundu ndi motere:
1.Mphamvu ya rabara ya neoprene
Zomwe zimapangidwira za neoprene ndizofanana ndi mphira wachilengedwe, ndipo mphira yake yaiwisi imakhala ndi mphamvu zowonongeka komanso kutalika kwa nthawi yopuma, yomwe ndi mphira wodzilimbitsa;Mapangidwe a ma cell a neoprene ndi ma molekyulu okhazikika, ndipo unyolowo uli ndi magulu a polar a maatomu a chlorine, omwe amawonjezera mphamvu ya intermolecular.Choncho, pansi pa zochita za mphamvu zakunja, zimakhala zosavuta kutambasula ndi crystallize (kudzilimbitsa), ndipo kutsetsereka kwa intermolecular sikophweka.Kuonjezera apo, kulemera kwa maselo ndi kwakukulu (2.0 ~ 200,000), kotero mphamvu yamanjenje ndiyokulirapo.
2.Kukana kukalamba kwabwino
Ma atomu a klorini omwe amamangiriridwa ku mgwirizano wapawiri wa unyolo wa neoprene molekyulu amapanga mgwirizano wapawiri ndi maatomu a klorini kukhala osagwira ntchito, kotero kukhazikika kosungirako kwa mphira wake wovulcanized ndikwabwino;sikophweka kukhudzidwa ndi kutentha, mpweya ndi kuwala m'mlengalenga, zomwe zimasonyeza bwino kukana kukalamba (kukana kwanyengo, kukana kwa ozoni ndi kukana kutentha).Kukana kwake kukalamba, makamaka nyengo yanyengo ndi kukana kwa ozoni, ndikwachiwiri kwa mphira wa ethylene propylene ndi mphira wa butyl mu mphira wokhazikika, komanso wabwino kwambiri kuposa mphira wachilengedwe;kukana kwake kutentha kuli bwino kuposa mphira wachilengedwe ndi mphira wa styrene butadiene, komanso wofanana ndi mphira wa nitrile, atha kugwiritsidwa ntchito kwakanthawi kochepa pa 150 ℃, ndipo angagwiritsidwe ntchito kwa miyezi inayi pa 90-110 ℃.
3.Kukana kwabwino kwamoto
Neoprene ndiye mphira wabwino kwambiri wopangira zonse, ali ndi mawonekedwe akuyaka kosakhazikika, kukhudzana ndi lawi lamoto kumatha kuyaka, koma lawi lakutali lizimitsidwa, izi ndichifukwa choti kuyaka kwa neoprene, gawo la kutentha kwambiri kumatha kuwonongeka pansi pa ntchito ya mpweya wa hydrogen chloride ndikupangitsa moto kuzimitsa.
4.Kukaniza mafuta bwino, kukana zosungunulira
Kukana kwamafuta kwa rabara ya neoprene ndi yachiwiri kwa mphira wa nitrile komanso kwabwino kuposa mphira wina wamba.Izi ndichifukwa choti molekyulu ya neoprene imakhala ndi maatomu a polar chlorine, omwe amawonjezera polarity ya molekyulu.Kukana kwa mankhwala a neoprene ndikwabwino kwambiri, kupatulapo asidi oxidizing amphamvu, ma acid ena ndi alkalis alibe pafupifupi chilichonse.Kukaniza kwamadzi kwa neoprene ndikwabwinoko kuposa ma rubber ena opangira.
Kodi madera ogwiritsira ntchito neoprene ndi ati?
Neoprene imagwiritsidwa ntchito pazinthu zosiyanasiyana, makamaka pazinthu zolimbana ndi ukalamba, monga mawaya amagetsi, zikopa za chingwe, mapilo a njanji yanjanji, zipupa zam'mbali za matayala a njinga, madamu a rabara, ndi zina zambiri;zinthu zosagwira kutentha komanso zolimbana ndi malawi, monga malamba osamva kutentha, ma hose, mapepala amphira, ndi zina zambiri;mankhwala osamva mafuta komanso osamva mankhwala, monga mapaipi, zodzigudubuza mphira, mapepala amphira, zida zamagalimoto ndi thirakitala;zinthu zina monga mphira nsalu, nsapato labala ndi zomatira, etc.
1.Waya ndi zipangizo zophimba chingwe
Neoprene ndi dzuwa kugonjetsedwa, ozoni kugonjetsedwa, ndipo ali kwambiri sanali flammability, ndi abwino chingwe chuma migodi, zombo, makamaka kupanga chingwe sheathing, komanso nthawi zambiri amagwiritsidwa ntchito magalimoto, ndege, injini poyatsira mawaya, atomiki mphamvu zomera kulamulira zingwe, komanso mawaya amafoni.Ndi neoprene kwa jekete la waya ndi chingwe ntchito yake yotetezeka kuposa mphira wachilengedwe kuposa 2 nthawi yayitali.
2.Transportation lamba, lamba wotumizira
Neoprene ili ndi makina abwino kwambiri, oyenera kwambiri kupanga malamba oyendetsa ndi malamba otumizira, makamaka ndi kupanga malamba opatsirana bwino kuposa mphira wina.
3.Oil resistant hose, gasket, anti-corrosion Murari
Kutengera kukana kwake bwino kwamafuta, kukana kwa dzimbiri, kukana kutentha ndi mawonekedwe ena, neoprene imagwiritsidwa ntchito kwambiri popanga zinthu zosagwira mafuta komanso ma hoses osiyanasiyana, matepi, ma gaskets ndi zida zomangira dzimbiri, makamaka zosagwira kutentha. malamba onyamula, mafuta ndi asidi ndi ma hoses osamva alkali, etc.
4.Gasket, pedi yothandizira
Neoprene ili ndi kusindikiza kwabwino komanso kukana kusinthasintha, magalimoto ochulukirachulukira opangidwa ndi neoprene, monga mafelemu a zenera, ma hoses amitundu yosiyanasiyana ya gaskets, ndi zina zambiri, komanso amagwiritsidwa ntchito ngati mlatho, galimoto yonyamula migodi, chothandizira tanki yamafuta.
5.Zomatira, zosindikizira
Zomatira za Neoprene zopangidwa ndi mphira wa neoprene monga zopangira zazikulu zimakhala ndi kusinthasintha kwabwino, komanso kukana kukalamba, kukana mankhwala ndi kukana kwamafuta, komanso mphamvu yomangirira kwambiri.
Neoprene latex ilibe zosungunulira za organic, kotero ili ndi zabwino zoonekeratu pachitetezo ndi thanzi, pomwe carboxyl neoprene ingagwiritsidwe ntchito ngati zomatira pamphira ndi zitsulo.Chloroprene labala ali polarity, kotero gawo lapansi lomangira lili ndi ntchito zosiyanasiyana, makamaka galasi, chitsulo, PVC zolimba, matabwa, plywood, zotayidwa, zosiyanasiyana mphira vulcanized, zikopa ndi zomatira zina.
6.Zinthu zina
Neoprene imagwiritsidwanso ntchito kwambiri pantchito zoyendera ndi zomangamanga.Monga kugwiritsa ntchito khushoni ya mpando wa neoprene foam mu basi ndi galimoto yapansi panthaka, kungalepheretse moto;ndege, zokhala ndi mphira wachilengedwe ndi zosakanikirana za neoprene kuti zipange mbali zolimbana ndi mafuta;injini yokhala ndi mbali za mphira, ma gaskets, zisindikizo, ndi zina zotero;zomangamanga, zomwe zimagwiritsidwa ntchito pomanga gasket, zonse zotetezeka komanso zosagwedezeka;neoprene angagwiritsidwenso ntchito ngati mpanda yokumba, interceptor pa chisindikizo chimphona, kusindikiza, utoto, kusindikiza, mapepala ndi zina mafakitale mphira odzigudubuza Neoprene angagwiritsidwenso ntchito ngati mpweya khushoni, thumba mpweya, zida zopulumutsa moyo, zomatira tepi, etc.
Nthawi yotumiza: Oct-20-2022