Ente Molding Stability Of Transparent Plastics - PMMA, PC, PET
Khakanyo ea nako ea ho bala:Metsotso e 3, metsotsoana e 37
Li-plastiki tse sebelisoang haholo 'marakeng kajeno ke polymethyl methacrylate (eo hangata e tsejoang e le acrylic kapa plexiglass, PMMA), polycarbonate (PC), polyethylene terephthalate (PET), nylon e bonaletsang, AS (acrylic-styrene copolymer), polysulfone (PSF) joalo joalo.Lipolasetiki tse tharo tse sebelisoang haholo ke PMMA, PC le PET.Ka lebaka la mathata a sebaka, se latelang ke puisano ea thepa le mokhoa oa ho enta oa li-plastiki tsena tse tharo.Le uena u ka khonaikopanye le baenjiniere ba ronaka kotloloho bakeng sa lits'ebeletso tsa boeletsi tsa mahala.
1, PMMA
PMMA Plastic Raw Material
PMMA e na le viscosity e phahameng le phallo e fokolang hanyane, ka hona e tlameha ho kenngoa ka mocheso o phahameng oa thepa le ka khatello e phahameng ea ente, moo mocheso oa ente o nang le tšusumetso e kholo ho feta khatello ea ente, 'me ha khatello ea ente e phahame, ho molemo ho feta ho honyela hoa sehlahisoa.
Mocheso oa mocheso oa ente o pharaletse, mocheso o qhibilihang ke 160 ℃, ha mocheso oa ho bola o fihla ho 270 ℃, kahoo mefuta e fapaneng ea mocheso oa thepa e pharaletse 'me ts'ebetso e molemo.Ka hona, ho ntlafatsa metsi, mocheso oa ente o bohlokoa.Tšusumetso e mpe, nako e telele, ho bonolo ho phunya, ho phunyeha habonolo le mathata a mang, e lokela ho eketseha ka ho eketsa mocheso oa hlobo, ho ntlafatsa ts'ebetso ea condensation, ho hlōla mefokolo ena.
2, PC
Letlapa la PC
PC e na le viscosity e phahameng, mocheso o phahameng oa ho qhibiliha, metsi a fokolang, ka hona e lokela ho ba ente e phahameng ea mocheso (pakeng tsa 270-320 ℃), mefuta e fokolang ea phetoho ea mocheso oa thepa, ts'ebetso ha e ntle joaloka PMMA, ho sebetsa ho thata ho feta PMMA.khatello ea ente holim'a metsi a ts'usumetso e nyane, empa ka lebaka la viscosity, ho ntse ho hlokahala hore ho be le khatello e kholoanyane ea ente, e tsamaisanang le ho thibela khatello ea kelello e ka hare e hlahisoang E le ho thibela khatello ea kelello ka hare, nako ea ho boloka khatello e lokela ho ba teng. e kgutshwane ka moo ho kgonehang.
3, PET
PET botlolo
Mocheso oa ho etsa PET o phahame, 'me mefuta ea phetoho ea mocheso oa thepa e moqotetsane (260-300 ℃), ka hona, tlhahiso e fokola, empa ka mor'a ho qhibiliha, mokelikeli o motle.Matla a mochine le ts'ebetso ha li phahame ka mor'a ente, 'me li tlameha ho ntlafatsoa ka mokhoa oa ho otlolla le ho fetola ho ntlafatsa tshebetso.
Mocheso oa hlobo o lokela ho laoloa ka nepo e le hore o se ke oa qhoma.Ntho ea bohlokoa ho deformation, ke ka hona khothaletso bakeng sa hlobo ea semathi se chesang.Thempereichara ea hlobo e lokela ho ba holimo ho seng joalo e tla baka boentši bo bobe le mathata a ho theola.
Mefokolo le tharollo bakeng sa likarolo tsa polasetiki tse bonaletsang
Litšitiso ke tse latelang:
Lithollo tsa silevera ka ho tlatsa hlobo le ts'ebetso ea condensation, khatello ea maikutlo ea ka hare ea anisotropic, tataiso e otlolohileng ea khatello ea maikutlo, e le hore resin e phalle holim'a mokhoa, le mokhoa o sa phallang ho hlahisa index e fapaneng ea refractive le tsoalo ea flash filament. , ha e atoloha, e ka 'na ea etsa hore sehlahisoa se bonahale eka ke mapetsong.Ntle le ts'ebetso ea ho bopa ente le tlhokomelo ea hlobo, lihlahisoa tse ntle ka ho fetisisa bakeng sa kalafo ea annealing.Mohlala, lisebelisoa tsa PC li ka futhumatsoa ho 160 ℃ kapa ho feta metsotso e 3-5, ebe li pholile ka tlhaho.
Li-bubble tsa moeaka lebaka la resin ka har'a metsi le khase e 'ngoe e ke ke ea lokolloa, (ka ts'ebetso ea hlobo ea condensation) kapa ka lebaka la ho tlatsa ha ho lekaneng, ho phalla holimo le ho potlaka haholo le ho thehoa ha li-bubble tsa vacuum.
Sephanyi se fosahetsengka lebaka la ho ba mahoashe ha hlobo, ka lehlakoreng le leng ho koaheloa kapele haholo hoo resini e sitoang ho kopitsa boemo ba bokaholimo ba hlobo, tsena tsohle li etsa hore bokaholimo ba eona bo hlahise ho se lekane ho honyenyane, 'me sehlahisoa se lahleheloa ke khanya ea sona.
Ripple e tshosange bua ka ho thehoa ha li-ripple tse teteaneng ho tloha hekeng e otlolohileng e le setsi, lebaka ke hore viscosity ea ho qhibiliha e kholo haholo, thepa e ka pele e 'nile ea koaheloa ka har'a sekoti, ebe thepa e phunyeletse holim'a sebaka sena sa condensation, le bokahodimo ba leqhutsu la tshoso.
Moholi o mosoeuhaholo-holo ka lebaka la lerōle le oelang ka har'a lintho tse tala moeeng kapa mongobo oa thepa e tala o moholo haholo mme o bakoa ke.
Mosi o mosoeu le matheba a matšoli bakoa haholo-holo ke ho bola kapa ho senyeha ha moqomo ka lebaka la ho chesa ho feteletseng ha polasetiki ka har'a moqomo.
Ente ea ho bopa e sebelisoa haholo liindastering tse fapaneng 'me e ka finyella tlhahiso e se nang moeli, e nepahetseng ea boima ba likarolo ka nako e khutšoanyane.PorLean Tech e fana ka lits'ebeletso tsa ho etsa ente bakeng sa lisebelisoa tse ngata, ho kenyeletsoa polasetiki le li-elastomer.Feelakenya mohlala oa hau'me u fumane khotheishene ea mahala le likeletso mabapi le lits'ebeletso tse amanang.
Nako ea poso: Apr-12-2022