Mokhoa oa ho thibela boto ea epoxy ho robeha

Boto ea epoxy ke thepa e sireletsang e phahameng ea ts’ebetso, eo hape e bitsoang epoxy glass fiber board, epoxy phenolic laminated glass cloth board joalo-joalo. Boto ea epoxy e entsoe haholo ka: lesela la fiber ea khalase le kopantsoe le resin ea epoxy mme le entsoe ka ho futhumatsa le khatello, kahoo le na le ts’ebetso e babatsehang le melemo e mengata. ‘Me e ka bontša litšobotsi tsa eona sebakeng leha e le sefe sa mocheso.

Ka mohlala, tlas’a mocheso o itekanetseng, e ka bontša mosebetsi oa eona oa mechine hantle haholo; tlas’a tikoloho ea mocheso o phahameng, e ka bontša thepa ea eona ea motlakase hantle haholo. Ka hona, ka lebaka la litšoaneleho tsena, boto ea epoxy e loketse haholo bakeng sa likarolo tsa sebopeho se phahameng sa insulation masimong a motlakase le a elektroniki. Ntho e ‘ngoe le e’ ngoe e ka akaretsoa ka polelo e le ‘ngoe, ke hore, liboto tsa epoxy li na le thepa e phahameng ea mochine le dielectric,’ me li na le mocheso o babatsehang le ho hanyetsa mongobo. Mokhahlelo o phahameng oa ho hanyetsa mocheso oa thepa ea ho kenya epoxy board ke F grade, ke hore, e ka mamella mocheso o phahameng oa likhato tse 155, ‘me e ntse e ka boloka ts’ebetso e tsitsitseng ea ho sebetsa tlas’a mocheso o phahameng joalo.

Botenya ba eona hangata bo pakeng tsa 0.5 le 100mm. Litlhaloso tse sebelisoang hangata ke 1000mm * 2000mm. Thepa ea 1200 × 2400 epoxy board e tla senyeha ka mocheso o phahameng oa likhato tse 180, kahoo hangata ha e sebelisoe le litšepe tse ling, ho seng joalo e ka baka deformation ea mocheso oa letlapa la tšepe.

Hangata resin ea epoxy e kopana le maemo a latelang nakong ea tšebeliso: EP casting, potting, molding le likarolo tse ling li tla phunyeha ka mor’a ho phekola kapa nakong ea polokelo, e leng se hlahisang lihlahisoa tsa litšila. Likarolo tsa EP le tsona li tla bonts’a mapetsong ha li le tlas’a mocheso o tlase kapa mocheso o fapaneng le serame. Karolo e kholoanyane, ho kenngoa ho eketsehileng, ‘me ho bonolo ho bontša mapetsong. Ka kakaretso ho lumeloa hore sena ke hobane khatello ea kelello ea pholiso le khatello ea mocheso e kholo ho feta matla a thepa. Ka hona, ho hlokahala feela ho eketsa matla a EP ho qoba mapetsong. Empa EP e matla haholo e atisa ho ba le matla a fokolang a tšusumetso. Likarolo tse nang le khatello ea kelello (tse kang li-adhesives tsa moralo, lisebelisoa tse tsoetseng pele tse entsoeng, joalo-joalo) tse entsoeng ka matla a phahameng a EP hangata li robeha ka tšohanyetso nakong ea tšebeliso, empa khatello ea kelello eo ba e fumanang e tlaase ho feta matla a EP. Ho robeha ke brittle fracture trace. E bitsoa low stress brittle fracture. Sehlahisoa se phekotsoeng sa EP ke polymer e nang le tekanyo e phahameng ea ho hokahanya ‘me e brittle ho feta.

Mabapi le ho toughening ea epoxy resin, hobane rabara toughened epoxy resin system haholo-holo e amana le sebopeho sa matrix le sebopeho sa rabara ea karoloana nakong ea ts’ebetso ea ho robeha, e boetse e amana le boemo ba sebopeho sa mekhahlelo e ‘meli le karolo ea molumo oa karoloana. mohato. The toughening feto-fetoha e haholo-holo ikemiselitse ho toughness ea likaroloana, junifomo netweke ketane bolelele ba matrix, ‘me hape e amanang le interfacial adhesion le sebopeho sa lik’hemik’hale tsa netweke ketane ka boeona.