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Tsebo ea Motheo ea Epoxy Resins le Epoxy Adhesives

(I) Khopolo eaepoxy resin

Epoxy resin e bua ka sebopeho sa ketane ea polymer e na le lihlopha tse peli kapa ho feta tsa epoxy ka har'a metsoako ea polymer, ke ea resin ea thermosetting, resin ea moemeli ke bisphenol A mofuta oa epoxy resin.

(II) Litšobotsi tsa li-epoxy resin (tseo hangata li bitsoang bisphenol A mofuta oa epoxy resin)

li-resin tsa epoxy

1. Boleng ba kopo ea epoxy resin ka bomong bo tlase haholo, bo hloka ho sebelisoa hammoho le moemeli oa pheko ho ba le bohlokoa bo sebetsang.

2. Matla a matla a ho kopanya: matla a ho kopanya a sekhomaretsi sa epoxy resin a ka pele ho li-adhesives tsa maiketsetso.

3. Ho folisa shrinkage e nyenyane, ka sekhomaretsi epoxy resin sekgomaretsi shrinkage ke e nyenyane ka ho fetisisa, e leng e boetse e epoxy resin sekgomaretsi folisa sekgomaretsi phahameng e 'ngoe ea mabaka a.

4. Khanyetso e ntle ea lik'hemik'hale: sehlopha sa ether, lesale la benzene le sehlopha sa aliphatic hydroxyl tsamaisong ea ho phekola ha se senyehe habonolo ke asiti le alkali. Metsing a leoatle, petroleum, parafine, 10% H2SO4, 10% HCl, 10% HAc, 10% NH3, 10% H3PO4 le 30% Na2CO3 e ka sebelisoa lilemo tse peli; le ho qoelisoa ka 50% H2SO4 le 10% HNO3 mocheso oa kamore bakeng sa halofo ea selemo; 10% NaOH (100 ℃) ho qoelisoa ka khoeli e le 'ngoe, ts'ebetso e lula e sa fetohe.

5. Motlakase o motle ka ho fetisisa oa motlakase: motlakase oa ho senyeha ha epoxy resin o ka ba moholo ho feta 35kv / mm 6. Ts'ebetso e ntle ea ts'ebetso, botsitso ba boholo ba sehlahisoa, ho hanyetsa hantle le ho kenngoa ha metsi a tlaase. Melemo ea Bisphenol A-type epoxy resin e ntle, empa hape e na le mefokolo ea eona: ①. Viscosity ea ts'ebetso, e bonahalang e batla e le tšitiso kahong ②. Thepa e phekotsoeng e brittle, elongation e nyane. ③. Matla a lekhapetla a tlase. ④. Ho hanyetsa ho futsanehile ha mochine le mocheso oa mocheso.

(III) ts'ebeliso le nts'etsopele eaepoxy resin

1. Histori ea tsoelo-pele ea epoxy resin: epoxy resin e ile ea sebelisoa bakeng sa patent ea Switzerland ke P.Castam ka 1938, sekhomaretsi sa pele sa epoxy se ile sa hlahisoa ke Ciba ka 1946, 'me seaparo sa epoxy se ile sa hlahisoa ke SOCreentee oa USA ka 1949, le tlhahiso ea indasteri ea epoxy resin e qalile ka 1958.

2. Tšebeliso ea epoxy resin: ① Indasteri ea ho roala: resin ea epoxy indastering ea ho roala e hloka palo e kholo ka ho fetisisa ea liphahlo tse thehiloeng metsing, liphahlo tsa phofo le liphahlo tse phahameng tse tiileng li sebelisoa haholo. E ka sebelisoa haholo lijaneng tsa liphaephe, likoloi, likepe, sefofane, lisebelisoa tsa elektroniki, lipapali, mesebetsi ea matsoho le liindasteri tse ling. ② indasteri ea motlakase le ea elektroniki: sekhomaretsi sa epoxy resin se ka sebelisoa bakeng sa lisebelisoa tsa ho kenya motlakase, joalo ka li-rectifier, li-transformer, potting ea ho tiisa; ho tiisa le ho sireletsa likarolo tsa elektronike; lihlahisoa tsa electromechanical, ho kenya letsoho le ho kopanya; ho tiisa le ho tlamahanngoa ha libeteri; capacitors, resistors, inductors, bokaholimo ba seaparo. ③ Mabenyane a khauta, mesebetsi ea matsoho, indasteri ea thepa ea lipapali: e ka sebelisoa bakeng sa matšoao, mabenyane, matšoao a khoebo, hardware, lirakete, thepa ea ho tšoasa litlhapi, thepa ea lipapali, mesebetsi ea matsoho le lihlahisoa tse ling. ④ Indasteri ea Optoelectronic: e ka sebelisoa bakeng sa ho kenyelletsa, ho tlatsa le ho kopanya li-diode tse hlahisang leseli (LED), li-tubes tsa digital, li-pixel tubes, lipontšo tsa elektroniki, mabone a LED le lihlahisoa tse ling. ⑤Indasteri ea kaho: E tla boela e sebelisoe haholo mebileng, borokho, fatše, mohaho oa tšepe, kaho, ho roala marako, letamo, kaho ea boenjiniere, ho lokisoa ha lintho tsa setso le liindasteri tse ling. ⑥ Likhomaretsi, li-sealant le li-composites: joalo ka mahare a turbine ea moea, mesebetsi ea matsoho, lirafshoa, likhalase le mefuta e meng ea maqhama lipakeng tsa lintho, motsoako oa letlapa la khabone, ho tiisa lisebelisoa tsa microelectronic joalo-joalo.

tšebeliso ea epoxy resin

(IV) Litšobotsi tsasekhomaretsi sa epoxy resin

1. Sekhomaretsi sa epoxy resin se thehiloe holim'a litšobotsi tsa epoxy resin ea ho tsosolosa kapa ho fetola, e le hore likarolo tsa eona tsa ts'ebetso li lumellane le litlhoko tse khethehileng, hangata sekhomaretsi sa epoxy resin se boetse se hloka ho ba le moemeli oa phekolo e le hore se sebelisoe, 'me se hloka ho e tsoakiloeng ka mokhoa o ts'oanang e le hore e fole ka ho feletseng, ka kakaretso sekhomaretsi sa epoxy resin se tsejoang ka hore ke A sekhomaretsi kapa ntho e ka sehloohong, ntho e phekolang e tsejoang ka hore ke B glue kapa e alafang (hardener).

2. ho bonahatsa litšobotsi tse ka sehloohong tsa sekhomaretsi sa epoxy resin pele ho phekoloa ke: mmala, viscosity, matla a khoheli a itseng, karo-karolelano, nako ea gel, nako e fumanehang, nako ea ho folisa, thixotropy (stop flow), boima, tsitsipano ea holim'a metsi joalo-joalo. Viscosity (Viscosity): ke khanyetso ea ka hare ea colloid ka phallo, boleng ba eona bo khethoa ke mofuta oa ntho, mocheso, mahloriso le lintlha tse ling.

Gel nako: pheko ea sekhomaretsi ke mokhoa oa ho fetoha ho tloha ho metsi ho ea ho ho tiisa, ho tloha qalong ea karabelo ea sekhomaretsi ho ea boemong bo mahlonoko ba gel e atisa ho ba nako e tiileng bakeng sa nako ea gel, e khethiloeng ke ho kopanya palo ea epoxy resin. sekhomaretsi, mocheso le lintlha tse ling.

Thixotropy: Tšobotsi ena e bua ka colloid e angoang ke matla a ka ntle (ho sisinyeha, ho sisinyeha, ho sisinyeha, maqhubu a ultrasonic, joalo-joalo), ka matla a ka ntle ho tloha ho teteaneng ho ea ho tšesaane, ha lintlha tsa ka ntle li emisa karolo ea colloid ho khutlela ho ea pele. ho lumellana hoa ketsahalo.

Ho thatafala: e bua ka ho hanyetsa ha thepa ho matla a ka ntle a kang ho khabisa le ho senya. Ho latela mekhoa e fapaneng ea teko ea Shore (Shore) hardness, Brinell (Brinell) hardness, Rockwell (Rockwell) hardness, Mohs (Mohs) hardness, Barcol (Barcol) hardness, Vickers (Vichers) hardness joalo-joalo. Boleng ba mofuta oa teko ea boima le boima bo amanang le mokhoa o tloaelehileng oa ho hlahloba boima, sebopeho sa Shore hardness tester se bonolo, se loketse tlhahlobo ea tlhahiso, Shore hardness tester e ka aroloa ka mofuta oa A, mofuta oa C, mofuta oa D, mofuta oa A bakeng sa ho lekanya bonolo. colloid, C le D-mofuta bakeng sa tekanyo ea semi-hard colloid le e thata.

Ho tsitsinyeha ha bokahodimo: ho hoheloa ha limolek'hule ka har'a mokelikeli e le hore limolek'hule holim'a matla a ka hare, matla ana a etsa hore mokelikeli o fokotsehe ka hohle kamoo ho ka khonehang ho fokotsa sebaka sa oona le ho thehoa ha ho tšoana le holim'a matla, a tsejoang e le tsitsipano e kahodimo. Kapa ho tsamaisana pakeng tsa likarolo tse peli tse bapileng tsa bokaholimo ba mokelikeli ka bolelele ba yuniti, ke ponahatso ea matla a limolek'hule. Karolo ea khatello ea holimo ke N/m. Boholo ba tsitsipano ea holim'a metsi bo amana le tlhaho, bohloeki le mocheso oa mokelikeli.

3. ho bonahatsa litšobotsi tsasekhomaretsi sa epoxy resinka mor'a ho phekola likarolo tse kholo ke: ho hanyetsa, motlakase, ho kenngoa ha metsi, matla a khatello, matla a ho tsitsa, matla a ho kuta, matla a ho phunya, matla a tšusumetso, mocheso oa mocheso, mocheso oa khalase, khatello ea kelello ea ka hare, ho hanyetsa lik'hemik'hale, elongation, shrinkage coefficient. , conductivity ea mocheso, motlakase oa motlakase, boemo ba leholimo, ho hanyetsa botsofali, joalo-joalo.

 li-resin tsa epoxy

Khanyetso: Hlalosa litšoaneleho tsa ho hanyetsa lintho tse bonahalang hangata ka ho hanyetsa holimo kapa ho hanyetsa molumo. Ho hanyetsa holimo ke sebaka se le seng pakeng tsa li-electrode tse peli tse lekantsoeng boleng ba ho hanyetsa, yuniti ke Ω. Sebopeho sa eleketrode le boleng ba ho hanyetsa li ka baloa ka ho kopanya resistivity holim'a sebaka ka sebaka sa unit. Ho hanyetsa molumo, ho tsejoang hape e le ho hanyetsa molumo, coefficient ea ho hanyetsa molumo, ho bolela boleng ba khanyetso ka botenya ba thepa, ke sesupo sa bohlokoa sa ho khetholla thepa ea motlakase ea dielectric kapa insulating. Ke index ea bohlokoa ho khetholla thepa ea motlakase ea dielectric kapa insulating. 1cm2 dielectric resistance to leakage current, unit ke Ω-m kapa Ω-cm. e kholoanyane ea resistivity, e betere thepa ea insulating.

Bopaki ba motlakase: e tsejoang hape e le matla a ho mamella voltage (matla a insulation), ha motlakase o eketsoa lipheletsong tsa colloid, tefiso e kholo ka har'a thepa e kengoa ke matla a motlakase, ho na le monyetla o moholo oa ho etsa hore ho thula ho be le monyetla o moholo oa ho thulana, ho fella ka ho robeha ha colloid. Etsa hore ho senyeha ha insulator ea motlakase o tlaase ka ho fetisisa ho bitsoa ntho ea motlakase oa ho senya. Etsa 1 limilimithara teteaneng insulating thepa karohano, lokela ho eketsa gagamalo kilovolts bitsoa insulating lintho tse bonahalang insulation mamella matla gagamalo, ho thoeng ke mamella gagamalo, yuniti ke: Kv/mm. insulating material insulation le mocheso na le kamano e haufi. Ha mocheso o phahame, ho mpefala ha ts'ebetso ea ts'ebetso ea lisebelisoa tsa insulating. E le ho netefatsa matla a ho kenya letsoho, thepa e 'ngoe le e' ngoe e sireletsang e na le mocheso o loketseng o amohelehang oa ho sebetsa, ka mocheso ona o ka tlase, o ka sebelisoa ka mokhoa o sireletsehileng ka nako e telele, ho feta mocheso ona o tla tsofala ka potlako.

Ho monya metsi: Ke tekanyo ea tekanyo eo thepa e monyang metsi ka eona. E bua ka keketseho ea peresente ea boima ba ntho e qoelisoang metsing ka nako e itseng mochesong o itseng.

Matla a tšepe: Matla a thata ke khatello e phahameng ea khatello ea kelello ha gel e otlolloa hore e robehe. E boetse e tsejoa e le matla a ho tsikitlanya, matla a ho tsikitlanya, matla a ho tsitsa, matla a ho tsitsa. Yuniti ke MPa.

Matla a ho kuta: e tsejoang hape e le matla a ho kuta, e bua ka sebaka sa bonding sa unit se ka mamellang boima bo boholo bo bapileng le sebaka sa bonding, unit e sebelisoang hangata ea MPa.

Matla a peel: e tsejoang hape e le matla a peel, ke boima bo boholo ba tšenyo ka bophara ba yuniti bo ka mamellang, ke tekanyo ea mohala oa matla a matla, yuniti ke kN / m.

Elongation: e bua ka colloid ka matla a tensile tlas'a ketso ea bolelele ba keketseho ea bolelele ba pele ba peresente.

Mocheso oa ho kheloha mocheso: e bua ka tekanyo ea mocheso o hanyetsanang le mocheso oa thepa e folisang, ke mohlala oa thepa e phekolang e qoelitsoeng ka har'a mofuta oa mocheso oa isothermal o loketseng phetisetso ea mocheso, ka har'a moroalo o sa sisinyeheng oa mofuta o tšehelitsoeng feela, o lekantsoeng ka sebopeho se kobehang ho fihla boleng bo boletsoeng ba mocheso, ke hore, mocheso oa ho kheloha mocheso, o bitsoang mocheso oa mocheso oa mocheso, kapa HDT.

Mocheso oa phetoho ea khalase: e bua ka thepa e phekotsoeng ho tloha sebopehong sa khalase ho ea ho phetoho ea boemo ba amorphous kapa e reketla haholo kapa e mokelikeli (kapa se fapaneng le phetoho) ea mocheso o moqotetsane oa sebaka se ka bang bohareng, se tsejoang e le mocheso oa phetoho ea khalase, hangata o hlahisoa ka Tg, ke sesupo sa ho hanyetsa mocheso.

Khaello ea ho fokotseha: e hlalosoa e le peresente ea karo-karolelano ea shrinkage ho boholo pele ho honyeha, 'me shrinkage ke phapang pakeng tsa boholo pele le ka mor'a ho honyela.

Khatello ea kelello ka hare: e bua ka ho ba sieo ha matla a ka ntle, colloid (thepa) ka lebaka la boteng ba bokooa, liphetoho tsa mocheso, li-solvents, le mabaka a mang a khatello ea kelello ea ka hare.

Ho hanyetsa lik'hemik'hale: e bua ka bokhoni ba ho hanyetsa li-acids, alkalis, matsoai, li-solvents le lik'hemik'hale tse ling.

Ho hanyetsa lelakabe: e bolela bokhoni ba thepa ea ho hanela ho tuka ha e kopana le lelakabe kapa ho sitisa ho tsoela pele ho tuka ha o le hole le lelakabe.

Ho hanyetsa boemo ba leholimo: e bolela ho pepesetsoa ha letsatsi, mocheso le serame, moea le pula le maemo a mang a leholimo.

Ho tsofala: pheko ea colloid ts'ebetsong, polokelong le ts'ebelisong ea ts'ebetso, ka lebaka la mabaka a kantle (mocheso, leseli, oksijene, metsi, mahlaseli, matla a mochini le mecha ea litaba ea lik'hemik'hale, joalo-joalo), letoto la liphetoho tsa 'mele kapa tsa lik'hemik'hale, polymer material crosslinking brittle, cracking sticking, discoloration cracking, blistering rough, chalking, delamination flaking, tshebetso ya ho senyeha butle-butle ha thepa ea mochine ea tahlehelo ea tahlehelo e ke keng ea sebelisoa, ketsahalo ena e bitsoa botsofali. Ketsahalo ea phetoho ena e bitsoa botsofali.

Dielectric kamehla: e tsejoang hape e le sekhahla sa capacitance, sekhahla se susumelitsoeng (Permittivity). E bua ka "unit volume" e 'ngoe le e' ngoe ea ntho, karolong e 'ngoe le e' ngoe ea "tharollo e ka khonehang" e ka boloka "electrostatic energy" (Electrostatic Energy) ea Ke bokae. Ha colloid "permeability" e kholoanyane (ke hore, boleng bo bobe), 'me tse peli li haufi le mosebetsi oa hona joale oa terata, ho thata ho finyella phello ea ho koala ka ho feletseng, ka mantsoe a mang, ho na le monyetla oa ho hlahisa tekanyo e itseng. dutla. Ka hona, kamehla dielectric ea thepa e sireletsang ka kakaretso, e nyenyane e molemo. Dielectric kamehla ea metsi ke 70, mongobo o fokolang haholo, o tla baka liphetoho tse kholo.

4. boholo basekhomaretsi sa epoxy resinke sekhomaretsi se behang mocheso, se na le lintlha tse ka sehloohong tse latelang: mocheso o phahameng o folisa ka potlako; palo e tsoakaneng ea ho feta, ho phekola ka potlako; mokhoa oa ho folisa o na le ts'ebetso ea exothermic.

 

 

 

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Nako ea poso: Oct-31-2024