Irabha ye-Chloroprene (CR), eyaziwa nangokuthi irabha ye-chloroprene, i-elastomer ekhiqizwa i-alpha polymerization ye-chloroprene (okungukuthi, i-2-chloro-1,3-butadiene) njengento eluhlaza.Yenziwe okokuqala nguWallace Hume Carothers waseDuPont ngo-April 17, 1930. I-DuPont yamemezela esidlangalaleni ngoNovemba 1931 ukuthi isungule irabha ye-chloroprene futhi yayethula ngokusemthethweni emakethe ngo-1937, okwenza irabha ye-chloroprene yaba uhlobo lokuqala lwenjoloba yokwenziwa ukukhiqizwa ezimbonini. .
Izakhiwo zenjoloba ye-chloroprene.
Ukubukeka kwe-Neoprene kumhlophe qhwa, ama-beige noma ama-flakes ansundu ngokukhanyayo noma izigaxa, ukuminyana 1.23-1.25g/cm3, izinga lokushisa lokushintsha kwengilazi: 40-50°C, indawo ebhidlikayo: 35°C, indawo ethambisayo cishe ngo-80°C, ukubola ku-230- 260°C.Incibilika ku-chloroform, benzene nezinye izincibilikisi eziphilayo, ivuvuke kuwoyela wemifino namafutha amaminerali ngaphandle kokuncibilika.I-80-100 ° C ingasetshenziswa isikhathi eside, ngezinga elithile le-flame retadancy.
Irabha ye-Neoprene kanye nesakhiwo senjoloba yemvelo kuyafana, umehluko wukuthi iqembu likagesi elingemuhle enjolobeni ye-neoprene lithatha indawo yeqembu le-methyl kunjoloba yemvelo, ethuthukisa ukumelana ne-ozone, ukumelana nowoyela kanye nokumelana nokushisa kwerabha ye-neoprene.Ngamafuphi, inokumelana nesimo sezulu esihle kakhulu, ukumelana ne-ozone, ukumelana nokugqwala kwamakhemikhali, ukumelana nowoyela, njll. Izici zayo eziphelele zomzimba nemishini nazo zingcono.Ngakho-ke, i-neoprene iguquguquka kakhulu, kokubili njengerabha yenhloso evamile nanjengerabha ekhethekile.
Izakhiwo eziyinhloko zomzimba nezemishini zimi kanje:
1.Amandla erabha ye-neoprene
Izakhiwo eziqinile ze-neoprene zifana nalezo zenjoloba yemvelo, futhi irabha yayo eluhlaza inamandla amakhulu okuqina kanye nobude ngesikhathi sekhefu, okuyirabha eziqinisayo;ukwakheka kwamangqamuzana e-neoprene kuyingqamuzana evamile, futhi iketango liqukethe amaqembu e-polar ama-athomu e-chlorine, okwandisa amandla e-intermolecular.Ngakho-ke, ngaphansi kwesenzo samandla angaphandle, kulula ukwelula nokucwebezela (ukuziqinisa), futhi i-intermolecular slippage akulula.Ngaphezu kwalokho, isisindo samangqamuzana sikhulu (2.0 ~ 200,000), ngakho-ke amandla okuqina makhulu.
2.Ukumelana nokuguga okuhle kakhulu
Ama-athomu e-chlorine axhunywe kwisibopho esiphindwe kabili seketango lamangqamuzana e-neoprene enza i-double bond nama-athomu e-chlorine angasebenzi, ngakho ukuzinza kwesitoreji senjoloba yayo eshisiwe kuhle;akulula ukuthintwa ukushisa, umoya-mpilo nokukhanya emkhathini, okubonisa ukumelana nokuguga okuhle kakhulu (ukumelana nesimo sezulu, ukumelana ne-ozone nokumelana nokushisa).Ukumelana kwayo nokuguga, ikakhulukazi isimo sezulu kanye nokumelana ne-ozone, kungokwesibili ngemuva kwerabha ye-ethylene propylene kanye nerabha ye-butyl enjoloba ehloselwe ukujwayelekile, futhi ingcono kakhulu kunenjoloba yemvelo;ukumelana nokushisa kwayo kungcono kunerabha yemvelo kanye nerabha ye-styrene butadiene, futhi efana nerabha ye-nitrile, ingasetshenziswa isikhathi esifushane ku-150 ℃, futhi ingasetshenziswa isikhathi eside njengezinyanga ezi-4 ku-90-110 ℃.
3.Ukumelana nelangabi okuhle kakhulu
I-Neoprene iyirabha engcono kakhulu yenhloso evamile, inezici zokuvutha okuzenzakalelayo, ukuthintana nelangabi kungasha, kodwa ilangabi elingalodwa liyacishwa, lokhu kungenxa yokuthi ukushisa kwe-neoprene, indima yokushisa okuphezulu ingabola ngaphansi kwendima igesi ye-hydrogen chloride futhi wenze umlilo ucime.
I-4.Ukumelana nowoyela okuhle kakhulu, ukumelana ne-solvent
Ukumelana nowoyela kwerabha ye-neoprene kungokwesibili kuphela kwerabha ye-nitrile futhi kungcono kunenye irabha evamile.Lokhu kungenxa yokuthi i-molecule ye-neoprene iqukethe ama-athomu e-polar chlorine, okwandisa i-polarity ye-molecule.Ukumelana kwamakhemikhali kwe-neoprene nakho kuhle kakhulu, ngaphandle kwe-acid oxidizing eqinile, amanye ama-acids nama-alkali cishe awanawo umthelela kuwo.Ukumelana namanzi kwe-neoprene nakho kungcono kunokwamanye amarabha okwenziwa.
Yiziphi izindawo zokusebenzisa i-neoprene?
I-Neoprene isetshenziswa ezinhlobonhlobo zezinhlelo zokusebenza, ikakhulukazi emikhiqizweni ekwazi ukumelana nokuguga, njengezintambo zikagesi, izikhumba zekhebula, amaphedi omcamelo kaloliwe kaloliwe, izindonga ezisemaceleni zamasondo ebhayisikili, amadamu enjoloba, njll.;imikhiqizo ekwazi ukumelana nokushisa futhi imelana nelangabi, njengamabhande okuthutha angangeni ekushiseni, amapayipi, amashidi erabha, njll.;imikhiqizo engazweli uwoyela futhi imelana namakhemikhali, njengamapayipi, amarola erabha, amashidi enjoloba, izingxenye zemoto kanye nogandaganda;eminye imikhiqizo efana nendwangu yerabha, izicathulo zenjoloba nezinto zokunamathisela, njll.
1.Izinto zokumboza zocingo kanye nekhebula
I-Neoprene ayizwani nokukhanya kwelanga, imelana ne-ozone, futhi inokungashisi okuhle kakhulu, iyinto efanelekile yekhebula lezimayini, imikhumbi, ikakhulukazi ekwenzeni i-cable sheathing, kodwa futhi evame ukusetshenziselwa izimoto, izindiza, izintambo zokuthungela injini, izintambo zokulawula isitshalo samandla e-athomu, kanye nezintambo zocingo.Nge-neoprene yejakhethi yocingo nekhebula ukusetshenziswa kwayo okuphephile kunerabha yemvelo izikhathi ezingaphezu kwezingu-2 ubude.
2.Ibhande lezokuthutha, ibhande lokudlulisa
I-Neoprene inezakhiwo ezinhle kakhulu zemishini, ezifanele kakhulu ukukhiqizwa kwamabhande okuthutha kanye namabhande okudlulisela, ikakhulukazi ngokukhiqiza kwayo amabhande okudlulisela kangcono kunezinye irabha.
I-3.Ipayipi elimelana nowoyela, i-gasket, i-Murari ephikisana nokugqwala
Ngokusekelwe ekumelaneni kwayo kahle nowoyela, ukumelana nokugqwala kwamakhemikhali, ukumelana nokushisa nezinye izici, i-neoprene isetshenziswa kabanzi ekwenzeni imikhiqizo evikela uwoyela kanye nezinhlobonhlobo zamapayipi, amateyipu, ama-gasket kanye nemishini ekwazi ukumelana nokugqwala kwamakhemikhali, ikakhulukazi ukumelana nokushisa. amabhande okuthutha, amafutha ne-asidi namapayipi amelana ne-alkali, njll.
I-4.Gasket, iphedi yokusekela
I-Neoprene inokubekwa uphawu okuhle nokumelana nokuguquguquka, izingxenye zezimoto ezengeziwe ezengeziwe ezenziwe nge-neoprene, njengamafreyimu amafasitela, amapayipi ama-gaskets ahlukahlukene, njll., kodwa futhi asetshenziswa njengebhuloho, iloli lokuphakamisa imayini, i-pad yokusekela ithangi likawoyela.
5.I-Adhesive, sealant
I-Neoprene Adhesive eyenziwe ngerabha ye-neoprene njengoba impahla eluhlaza eyinhloko inokuguquguquka okuhle, nokumelana nokuguga, ukumelana namakhemikhali nokumelana nowoyela, namandla okubopha okuphezulu.
I-Neoprene latex ayinawo ama-solvents ephilayo, ngakho-ke inezinzuzo ezisobala kwezokuphepha nasempilweni, lapho i-carboxyl neoprene ingasetshenziswa njenge-adhesive yerabha nensimbi.Injoloba ye-chloroprene ine-polarity, ngakho-ke i-substrate ebophayo inobubanzi obuningi bokusebenza, ikakhulukazi ingilazi, insimbi, i-PVC eqinile, ukhuni, i-plywood, i-aluminium, izinhlobonhlobo zenjoloba eqhumayo, isikhumba nezinye izinto zokunamathela.
6.Eminye imikhiqizo
I-Neoprene nayo isetshenziswa kabanzi emkhakheni wezokuthutha nokwakha.Njengokusetshenziswa kwe-neoprene foam seat cushion ebhasini nasezimotweni ezingaphansi komhlaba, kungavimbela umlilo;indiza, enenjoloba yemvelo kanye nenhlanganisela ye-neoprene ukuze yenze izingxenye ezimelana nowoyela;injini enezingxenye zenjoloba, ama-gaskets, izimpawu, njll.;ukwakhiwa, okusetshenziselwa i-gasket yokwakha ephezulu, kokubili ephephile futhi eqinile;I-neoprene ingasetshenziswa futhi njenge-embankment yokwenziwa, i-interceptor ku-giant seal, ukuphrinta, ukudaya, ukuphrinta, iphepha kanye namanye ama-roller enjoloba yezimboni I-Neoprene nayo ingasetshenziswa njenge-air cushion, isikhwama somoya, imishini yokusindisa impilo, i-adhesive tape, njll.
Isikhathi sokuthumela: Oct-20-2022