Plastiki e bua ka lisebelisoa tse entsoeng ka li-resin (kapa li-monomers tse entsoeng ka polymer ka kotloloho nakong ea ts'ebetso), li tlatselletsoa ka li-additives tse joalo ka li-plasticizers, fillers, lubricant le colorants, tse ka bōptjoang ka sebopeho nakong ea ts'ebetso.
Likarolo tsa bohlokoa tsa polasetiki:
① Lipolasetiki tse ngata li bobebe ebile li tsitsitse lik'hemik'hale, li hana ho bola.
② Tšusumetso e ntle ea ho hanyetsa.
③ Pontšo e ntle le ho hanyetsa ho roala.
④ Thepa e sireletsang e nang le conductivity e tlase ea mocheso.
⑤ Ka kakaretso ho bonolo ho bōptjoa, ho mebala, le ho sebetsa ka theko e tlaase.
⑥ Bongata ba lipolasetiki ha li na mocheso o fokolang, katoloso e phahameng ea mocheso, 'me li ka cha.
⑦ Ho se tsitse ha dimensional, tse atisang ho fetoha.
⑧ Lipolasetiki tse ngata li bonts'a ts'ebetso e fokolang ea mocheso o tlase, li fetoha brittle maemong a batang.
⑨ E ka tsofala habonolo.
⑩ Lipolasetiki tse ling li qhibiliha habonolo ka har'a lihlapolli.
Li-resin tsa phenolicli sebelisoa haholo lits'ebetsong tsa FRP (Fiber-Reinforced Plastic) tse hlokang thepa ea FST (Mollo, Mosi, le Chefo). Ho sa tsotellehe mefokolo e itseng (haholo-holo brittleness), li-resin tsa phenolic e ntse e le sehlopha se seholo sa li-resin tsa khoebo, tse nang le tlhahiso ea selemo le selemo ea lithane tse ka bang limilione tse 6. Li-phenolic resin li fana ka botsitso bo botle ba sebopeho le khanyetso ea lik'hemik'hale, li boloka botsitso ka har'a mocheso oa 150-180 ° C. Thepa ena, e kopantsoe le melemo ea ts'ebetso ea litšenyehelo, e khanna ts'ebeliso ea bona e tsoelang pele lihlahisoa tsa FRP. Lisebelisoa tse tloaelehileng li kenyelletsa likarolo tse ka hare tsa sefofane, lilaene tsa thepa, likoloi tsa terene, liphaephe le liphaephe tsa oli ea offshore, lisebelisoa tsa kotopo, lisebelisoa tsa likhohlano, li-rocket nozzle insulation le lihlahisoa tse ling tse amanang le FST.
Mefuta ea Li-Fiber-Reinforced Phenolic Composites
Li-composites tsa phenolic tse matlafalitsoeng ka fiberkenyeletsa thepa e matlafalitsoeng ka likhoele tse khaotsoeng, masela, le likhoele tse sa khaotseng. Likhoele tse chehiloeng pele (mohlala, lehong, selulose) li ntse li sebelisoa mefuteng ea phenolic molding bakeng sa lits'ebetso tse fapaneng, haholo likarolo tsa koloi joalo ka likoahelo tsa pompo ea metsi le likarolo tsa likhohlano. Metsoako ea morao-rao ea phenolic molding e kenyelletsa likhoele tsa khalase, likhoele tsa tšepe, kapa morao tjena, likhoele tsa carbon. Li-phenolic resins tse sebelisoang mekhoeng ea ho bōpa ke li-resin tsa novolac, tse phekoloang ka hexamethylenetetramine.
Lisebelisoa tsa lesela le kenngoeng pele li sebelisoa lits'ebetsong tse fapaneng, joalo ka RTM (Resin Transfer Molding), meaho ea sandwich ea khekhe ea linotsi, tšireletso ea bolo, liphanele tsa ka hare ho sefofane, le lijana tsa thepa. Lihlahisoa tse tsoelang pele tse matlafatsoang ka fiber li thehoa ka ho phunya li-filament kapa pultrusion. Lesela le ho tsoela pelemetsoako e matlafalitsoeng ka fiberhangata ba sebelisa metsi-kapa solvent-soluble resole phenolic resin. Ka ntle ho resole phenolics, litsamaiso tse ling tse amanang le phenolic-tse kang benzoxazine, cyanate esters, le Calidur™ resin e sa tsoa etsoa-li boetse li sebelisoa ho FRP.
Benzoxazine ke mofuta o mocha oa resin ea phenolic. Ho fapana le li-phenolic tsa setso, moo likarolo tsa limolek'hule li kopantsoeng ka marokho a methylene [-CH₂-], benzoxazine e etsa sebopeho sa cyclic. Benzoxazine e entsoe habonolo ho tsoa ho lisebelisoa tsa phenolic (bisphenol kapa novolac), li-amine tsa mantlha, le formaldehyde. Polymerization ea bona e bulang lesale ha e hlahise lihlahisoa kapa li-volatiles, e leng ho matlafatsang botsitso ba sehlahisoa sa ho qetela. Ntle le mocheso o phahameng le ho hanyetsa lelakabe, li-resin tsa benzoxazine li bonts'a thepa e sieo ho li-phenolic tsa setso, tse kang ho kenngoa ha mongobo o fokolang le ts'ebetso e tsitsitseng ea dielectric.
Calidur™ ke moloko o latelang, o nang le karolo e le 'ngoe, polyarylether amide thermosetting resin ea moloko o latelang, bakeng sa liindasteri tsa sefofane le lisebelisoa tsa elektroniki. Thisresin e phekola ka 140°C ka lihora tse 2, ka mocheso oa likhalase (Tg) oa 195°C. Hajoale, Calidur ™ e bonts'a melemo e mengata bakeng sa lisebelisoa tse sebetsang hantle haholo: ha ho na mesi e sa fetoheng, karabelo e tlase ea mocheso le ho honyeha nakong ea ho folisa, matla a phahameng a mocheso le metsi, khatello e phahameng ea composite le matla a ho kuta, le ho tiea ho hoholo. Resin ena e ncha e sebetsa e le mokhoa o sa sebeliseng chelete e ngata ho tloha bohareng ho isa holimo-Tg epoxy, bismaleimide, le li-cyanate ester resin sebakeng sa sefofane, lipalangoang, likoloi, motlakase / elektroniki, le lits'ebetso tse ling tse boima.
Nako ea poso: Jun-24-2025
