Phenolic Resin

Phenolic resin e boetse e bitsoabakelite, e tsejoang hape e le phofo ea bakelite.Qalong e ne e le ntho e se nang 'mala (e tšoeu) kapa e mosehla-sootho e bonaletsang,' maraka hangata o eketsa lisebelisoa tsa mebala ho etsa hore e bonahale e le khubelu, e mosehla, e ntšo, e tala, e sootho, e putsoa le mebala e meng, 'me e na le granular le powdery.E hanyetsana le asiti e fokolang le alkali e fokolang, e tla bola haeba acid e matla 'me e corrode haeba ho na le alkali e matla.E qhibiliha ka har'a acetone, metsi, joala le metsoako e meng ea tlhaho.E fumanoa ka polycondensation ea phenolic aldehyde kapa lihlahisoa tsa eona.Solid phenolic resin ke ntho e mosehla, e bonaletsang, e amorphous blocky, e khubelu ka lebaka la phenol e sa lefelloeng, matla a khoheli a itseng a ka bang 1.7, a qhibilihang habonolo ka joala, a sa qhibilihe ka metsing, a tsitsitse ho metsi, acid e fokolang le tharollo e fokolang ea alkali.Ke resin e entsoeng ke polycondensation ea phenol le formaldehyde tlas'a maemo a catalyst, neutralization le ho hlatsoa ka metsi.Ka lebaka la khetho ea catalyst, e ka aroloa ka mefuta e 'meli: thermosetting le thermoplastic.Phenolic resin e na le khanyetso e ntle ea asiti, thepa ea mochini le ho hanyetsa mocheso, 'me e sebelisoa haholo ho boenjineri ba anti-corrosion, likhomaretsi, lisebelisoa tse thibelang lelakabe, tlhahiso ea mabili a silang le liindasteri tse ling.

Phenolic resin powder ke mofuta oa thermoplastic phenolic resin e entsoeng ke polycondensation ea phenol le formaldehyde ka har'a acidic medium.E ka qhibiliha ka ethanol 'me ea fetoha thermosetting ka ho eketsa 6-15% ea urotropine.E ka bōptjoa ka likhato tse 150°C mme e na le matla a itseng a mochini.le thepa ea ho kenya motlakase.

Ntho e ka sehloohong ea resin ea phenolic ke ho hanyetsa mocheso o phahameng, 'me e ka boloka botšepehi ba eona ba sebopeho le botsitso ba sebopeho esita le mocheso o phahameng haholo.Ka hona, li-resin tsa phenolic li sebelisoa masimong a mocheso o phahameng, joalo ka lisebelisoa tsa refractory, lisebelisoa tsa likhohlano, likhomaretsi le liindasteri tsa foundry.

Tšebeliso ea bohlokoa ea phenolic resin e tšoana le setlamo.Li-phenolic resin li sebetsa ka mokhoa o fapaneng 'me li tsamaisana le mefuta e mengata ea li-organic le inorganic fillers.Li-phenolic resin tse entsoeng hantle li tsoa ka potlako haholo.'Me ka mor'a ho hokahanya, e ka fana ka matla a hlokahalang a mochine, ho hanyetsa mocheso le thepa ea motlakase bakeng sa lisebelisoa tsa abrasive, lisebelisoa tsa refractory, lisebelisoa tsa friction le bakelite.

Li-phenolic resin tse qhibilihang ka metsing kapa li-phenolic resin tse qhibilihang ka joala li sebelisetsoa ho kenya pampiri, lesela la k'hothone, khalase, asbestos le lintho tse ling tse tšoanang le tsona ho li fa matla a mochine, thepa ea motlakase, joalo-joalo Mehlala e tloaelehileng e kenyelletsa ho kenngoa ha motlakase le tlhahiso ea mechine ea lamination, clutch. li-discs le filthara pampiri bakeng sa filtara likoloi.

Lintho tsa phenolic resin:

Ts'ebetso e phahameng ea mocheso: Ntho ea bohlokoa ka ho fetisisa ea resin ea phenolic ke ho hanyetsa mocheso o phahameng, esita le ka mocheso o phahameng haholo, e ka boloka botšepehi ba eona ba sebopeho le botsitso ba sebopeho.

Matla a tlamahano: Tšebeliso ea bohlokoa ea resin ea phenolic e tšoana le setlamo.Li-phenolic resin li sebetsa ka mokhoa o fapaneng 'me li tsamaisana le mefuta e mengata ea li-organic le inorganic fillers.

Sekhahla se phahameng sa masala a khabone: Tlas'a maemo a khase ea inert e nang le mocheso o ka bang 1000°C, li-phenolic resin li tla hlahisa masala a phahameng a carbon, a loketseng ho boloka botsitso ba sebopeho sa li-phenolic resin.

Mosi o tlase le chefo e tlase: Ha e bapisoa le lisebelisoa tse ling tsa resin, phenolic resin system e na le melemo ea ho ba le mosi o tlase le chefo e tlase.Tabeng ea ho chesa, mokhoa oa phenolic resin o hlahisoang ke mokhoa oa saense o tla senyeha butle-butle ho hlahisa hydrogen, hydrocarbons, mouoane oa metsi le carbon oxides.Mosi o hlahisoang nakong ea ts'ebetso ea ho bola o batla o le monyenyane, 'me chefo e batla e le tlaase.

Khanyetso ea lik'hemik'hale: Resin ea phenolic e amanang le sefapano e ka hanela ho bola ha lik'hemik'hale life kapa life.Joalo ka peterole, peterole, joala, glycol, grease le li-hydrocarbon tse fapaneng.

Kalafo ea mocheso: Phekolo ea mocheso e tla eketsa mocheso oa phetoho ea khalase ea resin e phekotsoeng, e ka ntlafatsang haholoanyane thepa ea resin.

Foamability: Phenolic foam ke mofuta oa polasetiki ea foam e fumanoang ka resin e phophomang ea phenolic.Ha e bapisoa le foam ea polystyrene, foam ea polyvinyl chloride, foam ea polyurethane le lisebelisoa tse ling tse neng li laola 'maraka qalong, e na le ts'ebetso e ikhethang e ikhethang mabapi le ho lieha ha lelakabe.