Liplastiki li bua ka thepa e entsoeng haholo-holo ka li-resin (kapa li-monomers tse entsoeng ka polymer ka kotloloho nakong ea ts'ebetso), tse tlatselitsoeng ka lintho tse ling tse kang li-plasticizer, li-filler, li-lubricant le li-colorant, tse ka bōptjoang hore e be sebopeho nakong ea ts'ebetso.
Litšobotsi tsa Bohlokoa tsa Lipolasitiki:
① Bongata ba dipolasetiki bo bobebe ebile bo tsitsitse ka lik'hemik'hale, bo hanela mafome.
② Ho hanyetsa tšusumetso e ntle haholo.
③ Ponaletso e ntle le ho hanyetsa ho tsofala.
④ Thepa ea ho thibela mocheso e nang le conductivity e tlase ea mocheso.
⑤ Ka kakaretso ho bonolo ho e bopa, ho e taka le ho e sebetsana ka theko e tlase.
⑥ Bongata ba dipolasetiki ha di na ho hanyetsa mocheso hantle, di atoloha haholo mochesong, mme di kgona ho tuka.
⑦ Ho se tsitse ha tekanyo, ho sekamela ho feto-fetoha.
⑧ Liplastiki tse ngata li bontša ts'ebetso e mpe mochesong o tlase, li fetoha tse pshatlehang habonolo maemong a batang.
⑨ E kotsing ea ho tsofala.
⑩ Lipolasitiki tse ling li qhibiliha habonolo ka har'a li-solvents.
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 lithibelo tse itseng (haholo-holo ho tetebela), li-resin tsa phenolic li ntse li le sehlopha se seholo sa li-resin tsa khoebo, ka tlhahiso ea selemo le selemo ea lithane tse ka bang limilione tse 6. Li-resin tsa phenolic li fana ka botsitso bo botle ba litekanyo le khanyetso ea lik'hemik'hale, li boloka botsitso ka har'a mocheso oa 150–180°C. Thepa ena, hammoho le melemo ea eona ea ts'ebetso ea litšenyehelo, e khanna ts'ebeliso ea tsona e tsoelang pele lihlahisoa tsa FRP. Lisebelisoa tse tloaelehileng li kenyelletsa likarolo tsa kahare tsa lifofane, li-cargo liner, li-interior tsa likoloi tsa terene, li-grating tsa sethala sa oli sa leoatleng le liphaephe, thepa ea tunnel, thepa ea khohlano, insulation ea nozzle ea rocket, le lihlahisoa tse ling tse amanang le FST.
Mefuta ea Li-composite tsa Phenolic tse Matlafalitsoeng ke Fiber
Metswako ea phenolic e matlafalitsoeng ke faebakenyeletsa thepa e ntlafalitsoeng ka likhoele tse khaotsoeng, masela le likhoele tse tsoelang pele. Likhoele tse khaotsoeng tsa pele (mohlala, lehong, cellulose) li ntse li sebelisoa metsoakong ea phenolic molding bakeng sa lits'ebetso tse fapaneng, haholo-holo likarolo tsa likoloi joalo ka likoahelo tsa pompo ea metsi le likarolo tsa khohlano. Metsoako ea sejoale-joale ea phenolic molding e kenyelletsa likhoele tsa khalase, likhoele tsa tšepe, kapa morao tjena, likhoele tsa carbon. Li-resin tsa phenolic tse sebelisoang metsoakong ea molding ke li-resin tsa novolac, tse phekotsoeng ka hexamethylenetetramine.
Lisebelisoa tsa lesela tse kentsweng pele di sebediswa ditshebedisong tse fapaneng, tse kang RTM (Resin Transfer Molding), meaho ya sandwich ya mahe a dinotshi, tshireletso ya bolo, diphanele tsa kahare tsa difofane, le di-cargo liner. Dihlahiswa tse matlafaditsweng ka faeba tse tswelang pele di etswa ka ho phetholwa ha filament kapa pultrusion. Lesela le tswelang pelemetsoako e matlafalitsoeng ka faebahangata di sebedisa di-resin tsa phenolic tsa resole tse qhibilihang ka metsing kapa tse qhibilihang. Kantle ho di-phenolic tsa resole, ditsamaiso tse ding tse amanang le di-phenolic—tse kang di-benzoxazine, di-ester tsa cyanate, le resin e sa tswa hlahiswa ya Calidur™—le tsona di sebediswa ho FRP.
Benzoxazine ke mofuta o mocha oa resin ea phenolic. Ho fapana le li-phenolic tsa setso, moo likarolo tsa limolek'hule li hokahanngoang ka marokho a methylene [-CH₂-], li-benzoxazine li theha sebopeho sa potoloho. Li-Benzoxazine li hlahisoa habonolo ho tsoa linthong tsa phenolic (bisphenol kapa novolac), li-amine tsa mantlha, le formaldehyde. Polymerization ea tsona e bulang selikalikoe ha e hlahise lihlahisoa tse ling kapa li-volatiles, e leng se ntlafatsang botsitso ba sehlahisoa sa ho qetela. Ntle le ho hanyetsa mocheso o phahameng le malakabe, li-resin tsa benzoxazine li bontša thepa e sieo ho li-phenolic tsa setso, joalo ka ho monya mongobo o tlase le ts'ebetso e tsitsitseng ea dielectric.
Calidur™ ke resin ea polyarylether amide thermosetting ea moloko o latelang, e nang le karolo e le 'ngoe, e tsitsitseng mochesong oa kamore e ntlafalitsoeng ke Evonik Degussa bakeng sa liindasteri tsa lifofane le tsa elektroniki. Thisresin e fola ka 140°C ka lihora tse 2, ka mocheso oa phetoho ea khalase (Tg) oa 195°C. Hona joale, Calidur™ e bontša melemo e mengata bakeng sa metsoako e sebetsang hantle: ha ho na mesi e sa fetoheng, karabelo e tlase ea exothermic le ho fokotseha ha nako ea ho phekola, matla a phahameng a mocheso le a metsi, khatello e phahameng ea metsoako le matla a ho khaola, le ho tiea ho hoholo. Resin ena e ncha e sebetsa e le mokhoa o mong o theko e tlaase ho feta li-resin tsa epoxy tsa Tg tse mahareng ho isa ho tse phahameng, bismaleimide, le cyanate ester lifofa-sebakeng sa lifofane, lipalangoang, likoloi, motlakase/elektroniki, le lits'ebetsong tse ling tse boima.
Nako ea poso: Phuptjane-24-2025
