Chloroprene rabara (CR), eo hape e tsejoang e le rabara ea chloroprene, ke elastomer e hlahisoang ke alpha polymerization ea chloroprene (ke hore, 2-chloro-1,3-butadiene) joalo ka thepa ea mantlha e tala.E entsoe ka lekhetlo la pele ke Wallace Hume Carothers oa DuPont ka la 17 Mmesa, 1930. DuPont e phatlalalitse phatlalatsa ka Pulungoana 1931 hore e iqapetse rabara ea chloroprene mme ea e tsebisa 'marakeng ka 1937, ea etsa rabara ea chloroprene rabara ea pele ea maiketsetso e hlahisoang indastering. .
Lintho tsa rabara tsa chloroprene.
Ponahalo ea Neoprene e tšoeu e bosoeu, e beige kapa e bosootho bo bobebe, boima ba 1.23-1.25g/cm3, mocheso oa phetoho ea khalase: 40-50 ° C, ntlha e putlamang: 35 ° C, ntlha e bonolo e ka bang 80 ° C, ho bola ho 230- 260°C.E qhibiliha ka har'a chloroform, benzene le metsoako e meng ea tlhaho, e ruruhileng ka oli ea meroho le oli ea liminerale ntle le ho qhibiliha.80-100 ° C e ka sebelisoa ka nako e telele, ka tekanyo e itseng ea ho lieha ha lelakabe.
Rabara ea Neoprene le sebopeho sa rabara ea tlhaho e tšoana, phapang ke hore sehlopha sa motlakase se senyehileng ka har'a rabara ea neoprene se nka sebaka sa sehlopha sa methyl ka rabara ea tlhaho, e ntlafatsang ho hanyetsa ozone, ho hanyetsa oli le ho hanyetsa mocheso oa rabara ea neoprene.Ka bokhutšoanyane, e na le khanyetso e ntle ea boemo ba leholimo, ho hanyetsa ozone, k'hemik'hale ea kutu ea lik'hemik'hale, ho hanyetsa oli, joalo-joalo. Thepa ea eona e pharaletseng ea 'mele le ea mechine le eona e molemo.Ka hona, neoprene e na le mekhoa e mengata haholo, ka bobeli e le rabara e sebelisoang ka kakaretso le e le rabara e khethehileng.
Thepa ea mantlha ea 'mele le ea mochini ke tse latelang:
1.Matla a rabara ea neoprene
Thepa e tsitsitseng ea neoprene e tšoana le ea rabara ea tlhaho, 'me rabara ea eona e tala e na le matla a phahameng a tsitsipano le bolelele nakong ea khefu, e leng rabara e itšebetsang;sebopeho sa limolek'hule tsa neoprene ke molek'hule e tloaelehileng, 'me ketane e na le lihlopha tsa polar tsa liathomo tsa chlorine, tse eketsang matla a intermolecular.Ka hona, tlas'a ketso ea matla a ka ntle, ho bonolo ho otlolla le ho kristale (ho iketsetsa matla), 'me ho thella ha intermolecular ha ho bonolo.Ho phaella moo, boima ba molek'hule bo boholo (2.0 ~ 200,000), kahoo matla a matla a maholo a maholo.
2.Ho hanyetsa botsofali ho babatsehang
Liathomo tsa chlorine tse khomaretsoeng ho tlamahano e habeli ea ketane ea limolek'hule tsa neoprene li etsa hore bond e habeli le liathomo tsa chlorine li se ke tsa sebetsa, kahoo botsitso ba polokelo ea rabara ea eona e hlasetsoeng bo lokile;ha ho bonolo ho angoa ke mocheso, oksijene le leseli sepakapakeng, e leng se bontšang khanyetso e babatsehang ea botsofali (ho hanyetsa boemo ba leholimo, ho hanyetsa ozone le ho hanyetsa mocheso).Ho hanyetsa ha eona ho tsofala, haholo-holo boemo ba leholimo le ho hanyetsa ozone, ke ea bobeli feela ho rabara ea ethylene propylene le rabara ea butyl ka rabara e sebelisoang ka kakaretso, 'me e molemo ho feta rabara ea tlhaho;ho hanyetsa mocheso oa eona ho molemo ho feta rabara ea tlhaho le rabara ea styrene butadiene, 'me e tšoana le rabara ea nitrile, e ka sebelisoa nako e khutšoanyane ho 150 ℃,' me e ka sebelisoa nako e telele joaloka likhoeli tse 4 ho 90-110 ℃.
3.E babatsehang ho hanyetsa lelakabe
Neoprene ke rabara e ntle ka ho fetesisa ea sepheo se akaretsang, e na le litšoaneleho tsa ho tuka ka tšohanyetso, ho kopana le lelakabe ho ka chesa, empa lelakabe le ka thoko lea tima, ke hobane ho chesa ha neoprene, karolo ea mocheso o phahameng e ka senyeha tlasa karolo ea khase ea hydrogen chloride le ho etsa hore mollo o time.
4.Ho hanyetsa oli e ntle haholo, ho hanyetsa solvent
Ho hanyetsa oli ea rabara ea neoprene ke ea bobeli feela ho rabara ea nitrile 'me e molemo ho feta rabara e meng e akaretsang.Lebaka ke hore molek'hule ea neoprene e na le liathomo tsa polar chlorine, tse eketsang polarity ea molek'hule.Khanyetso ea lik'hemik'hale ea neoprene e boetse e ntle haholo, ntle le acid e matla ea oxidizing, li-acids tse ling le alkalis ha li na phello ho eona.Ho hanyetsa metsi ha neoprene ho boetse ho molemo ho feta tsa li-rabara tse ling tsa maiketsetso.
Ke libaka life tsa tšebeliso ea neoprene?
Neoprene e sebelisoa mefuteng e mengata ea lisebelisoa, haholo-holo bakeng sa lihlahisoa tse thibelang botsofali, tse kang lithapo tsa motlakase, matlalo a cable, mesamo ea seporo sa terene, mabota a mahlakoreng a mabili a libaesekele, matamo a rabara, joalo-joalo;lihlahisoa tse thibelang mocheso le lelakabe, tse kang mabanta a tsamaisang mocheso, li-hose, maqephe a rabara, joalo-joalo;lihlahisoa tse hanyetsanang le oli le lik'hemik'hale tse kang li-hoses, lirolara tsa rabara, lishiti tsa rabara, likarolo tsa koloi le tsa terekere;lihlahisoa tse ling tse kang lesela la rabara, lieta tsa rabara le likhomaretsi, joalo-joalo.
1.Lisebelisoa tsa ho roala mohala le mohala
Neoprene ha e na khanya ea letsatsi, e hanyetsana le ozone, 'me e na le lintho tse babatsehang tse sa cheng, ke lisebelisoa tse loketseng tsa cable bakeng sa merafo, likepe, haholo-holo bakeng sa ho etsa li-cable sheathing, empa hape li sebelisoa hangata bakeng sa likoloi, lifofane, lithapo tsa motlakase oa enjene, likhoele tsa taolo ea limela tsa athomo. hammoho le lithapo tsa mohala.Ka neoprene bakeng sa baki ea terata le thapo ts'ebeliso ea eona e bolokehileng ho feta rabara ea tlhaho ho feta makhetlo a 2 nako e telele.
2.Lebanta la lipalangoang, lebanta la phetiso
Neoprene e na le thepa e babatsehang ea mechine, e loketseng haholo bakeng sa tlhahiso ea mabanta a lipalangoang le mabanta a phetiso, haholo-holo ka tlhahiso ea eona ea mabanta a phetisetso ho feta rabara e meng.
3.Oil resistant hose, gasket, anti-corrosion Murari
E ipapisitse le ho hanyetsa ha oli e ntle, k'hemik'hale e hanyetsanang le kutu, ho hanyetsa mocheso le litšobotsi tse ling, neoprene e sebelisoa haholo ha ho etsoa lihlahisoa tse hanyetsanang le oli le mefuta e fapaneng ea liphaephe, litheipi, li-gaskets le lisebelisoa tse thibelang ho bola ha lik'hemik'hale, haholo-holo tse thibelang mocheso. mabanta a conveyor, oli le li-hoses tse hanyetsanang le asiti le alkali, joalo-joalo.
4.Gasket, letlapa la tšehetso
Neoprene e na le ho tiisa hantle le ho hanyetsa ho feto-fetoha ha maemo, likarolo tse ngata tsa likoloi tse entsoeng ka neoprene, tse kang liforeimi tsa lifensetere, li-hoses tsa li-gaskets tse fapa-fapaneng, joalo-joalo, empa hape li sebelisoa e le borokho, teraka ea ho phahamisa merafo, pente ea tšehetso ea tanka ea oli.
5.Adhesive, sealant
Sekhomaretsi sa Neoprene se entsoeng ka rabara ea neoprene kaha thepa e ka sehloohong e tala e na le maemo a matle, le ho hanyetsa botsofali, ho hanyetsa lik'hemik'hale le ho hanyetsa oli, le matla a holimo a tlamahano.
Neoprene latex ha e na li-solvents tsa manyolo, kahoo e na le melemo e hlakileng ea polokeho le bophelo bo botle, moo carboxyl neoprene e ka sebelisoang e le sekhomaretsi sa rabara le tšepe.Chloroprene rabara e na le polarity, kahoo substrate e kopanyang e na le mefuta e mengata ea ts'ebeliso, haholo-holo bakeng sa khalase, tšepe, PVC e thata, lehong, plywood, aluminium, mefuta e fapaneng ea rabara e hlasetsoeng, letlalo le li-adhesives tse ling.
6.Lihlahisoa tse ling
Neoprene e boetse e sebelisoa haholo tšimong ea lipalangoang le kaho.Joalo ka tšebeliso ea mosamo oa setulo sa foam sa neoprene ka har'a bese le koloi e tsamaeang ka tlas'a lefatše, e ka thibela mollo;lifofane, tse nang le rabara ea tlhaho le metsoako ea neoprene ho etsa likarolo tse hanyetsanang le oli;enjene e nang le likarolo tsa rabara, li-gaskets, litiiso, joalo-joalo;kaho, e sebelisoang ka gasket ea mohaho o phahameng, ka bobeli e bolokehileng le e sa tsitsang;neoprene e ka boela ea sebelisoa e le sekontiri sa maiketsetso, li-interceptor holim'a tiiso e kholo, ho hatisa, ho daea, ho hatisa, pampiri le li-roller tse ling tsa rabara tsa indasteri Neoprene e ka boela ea sebelisoa e le mokokotlo oa moea, mokotla oa moea, lisebelisoa tse pholosang bophelo, tepi e khomarelang, joalo-joalo.
Nako ea poso: Oct-20-2022