Ts'ebetso ea ho kopanya extrusion ke eona feela tsela ea hore lisebelisoa tsa polymer, haholo-holo lipolasetiki, li tlohe lihlahisoa ho isa indastering.Lisebelisoa tsa sejoale-joale tsa polymer li ntse li tsoela pele ho ea ho lisebelisoa tsa sebopeho sa polymer tse sebetsang hantle, lisebelisoa tse ncha tse sebetsang tsa polymer le lisebelisoa tse akaretsang tsa polymer ka theko e tlase le ts'ebetso e phahameng.
Ts'ebetso ea ho kopanya extrusion ke eona feela tsela ea hore lisebelisoa tsa polymer, haholo-holo lipolasetiki, li tlohe lihlahisoa ho isa indastering.Ea kajenolisebelisoa tsa polymerli ntse li tsoela pele ho lebisa lisebelisoa tsa sebopeho sa polymer tse sebetsang hantle, lisebelisoa tse ncha tse sebetsang tsa polymer le lisebelisoa tse akaretsang tsa polymer ka theko e tlase le ts'ebetso e phahameng.Lisebelisoa tse phahameng tsa sebopeho sa polymer li khetholloa ka matla a phahameng a khethehileng, ho hanyetsa ha kutu, ho hanyetsa abrasion le ho sebetsa habonolo, tse bohlokoa haholo ho nts'etsopele ea moruo oa naha le ts'ireletso ea naha.Ka lebaka la mofuta oa eona o ikhethang oa ts'ebetso le o ikhethang, lisebelisoa tse ncha tse sebetsang tsa polymer li sebelisitsoe haholo libakeng tsa indasteri tse kang ts'ireletso ea tikoloho, ts'ebetso ea tlhahisoleseling, lisebelisoa tsa biomedical, membrane ea karohano ea thepa, phetoho ea matla le theknoloji ea polokelo ea matla.Ts'ebetso e phahameng ea lisebelisoa tse akaretsang tsa polymer le litšenyehelo tse tlase tsa polasetiki ea boenjiniere e ntse e le sepheo sa lipatlisiso tsa hajoale le nts'etsopele ea lisebelisoa tsa polymer le mohato oa bohlokoa oa ho holisa boholo ba tšebeliso ea lipolasetiki tse akaretsang le lipolasetiki tsa boenjiniere.
Ntle le lisebelisoa tse ling tsa ts'ebetso ea lisebelisoa tsa setso tsa polymer, lisebelisoa tse ncha tsa polymer li na le liphapang tse ngata tsa thepa ea 'mele le ea lik'hemik'hale.E hlahile ka nts'etsopele ea lisebelisoa tse ncha tsa polymeric, masimo a ts'ebeliso ea ho atolosoa, ho kopanya thepa e phahameng ea polymer le eona e hlahisoa ka kopo e phahameng, theknoloji ea setso ea ho kopanya le lisebelisoa ha li na lisebelisoa tse ncha tse phahameng tsa polymer ho fihlela tlhoko ea ho kopanya, ka hona, ntshetsopele ya mefuta e mecha ea ho kopanya theknoloji ea extrusion le lisebelisoa, ho finyella litlhoko tsa lisebelisoa tse ncha tsa polymer ho indasteri, ho kopanya thepa ea BNR;Ka nako e ts'oanang, ke mokhoa o ke keng oa qojoa oa nts'etsopele ea lisebelisoa tsa ho lokisa polymer kajeno.
- 1.Tsebeliso ea sekrufuru sa mafahlaho kopanya extrusionthekenoloji
Theknoloji ea sejoale-joale ea ho kopanya le ho kopanya extrusion ke ho kopanya lisebelisoa tse teng tsa polymer le li-polymer tse fapaneng kapa ho eketsa lisebelisoa tse ling ho ntlafatsa motsoako oa lisebelisoa tse fapaneng, e le ho ntlafatsa haholo thepa ea thepa, kapa ho fana ka thepa e tala ka thepa e ncha, ho eketsa mefuta e mecha ho. lelapa la polymer.Lefapheng lohle la polasetiki, hoo e ka bang 60% ea lipolasetiki li tlameha ho tsoakoa le ho fetoloa ho hlahisa lisebelisoa tse ncha.Boholo ba mekhoa ena e rarahaneng ea ts'ebetso e phethoa ka thepa ea ho kopanya e emeloang ke "twin screw extruder".Ho sebelisa sekoahelo se tšoanang ho kopanya extrusion ho na le melemo e latelang:
(1) ts'ebetso e ntle ea ho kopanya le ho etsa polasetiki, e ka netefatsang ka botlalo ho ts'oana le ts'ebetso ea ts'ebetso ea lisebelisoa tse fapaneng kamora ho kopanya, 'me e loketse ts'ebetso e rarahaneng e kang ho tlatsa, ho kopanya, ho matlafatsa khalase ea fiber, extrusion e sebetsang le ho tlosoa ha li-resin tse fapa-fapaneng. dipolasetiki.
(2) cylinder le screw li ka lemoha motsoako oa "building block", e le ho finyella merero e mengata, e mengata.
(3) screw meshing, ho itlhoekisa phello e ntle;Boitsebiso bona bo finyella phello e phahameng ea ho tsosolosa holim'a metsi le ts'ebetso e ntle ea ho qeta, e ka felisang khase kapa monoma e hlahisoang ka mokhoa oa ho kopanya le oa polasetiki.
(4) lebelo le phahameng la screw, matla a maholo a tlhahiso, tšebeliso e tlase ea matla ka tlhahiso ea yuniti, phello e hlakileng ea ho boloka matla.
Ho ipapisitsoe le melemo e kaholimo, theknoloji ea co-directional twin-screw mixing extrusion e na le monyetla o ke keng oa nkeloa sebaka ho lisebelisoa tsa ho lokisa thepa ea polymer mme e maemong a etelletseng pele tlhahisong ea phetoho ea thepa ea polymer.
Hajoale, mofuta o mocha oa ho kopanya li-twin-screw le ts'ebeliso ea morao-rao ea theknoloji ea extrusion e bonahatsoa haholo ka lintlha tse latelang: ho lokisoa ha lisebelisoa tsa nanometer ke thepa e phahameng ea polymer e thata ea mofuta oa Gao Ren oa theko e tlase, lisebelisoa tse phahameng tsa alloy polymer, tšireletso ea motlakase. lisebelisoa tsa polymeric, lisebelisoa tsa morao-rao tsa polymer bakeng sa polasetiki e senyehang, liphutheloana tsa elektroniki, masterbatch e ncha le masterbatch e fapaneng ea ts'ebetso, joalo-joalo, li ka sebelisoa ho etsa lisebelisoa tse ncha tse kopaneng (tse kang motsoako oa polasetiki oa lehong) ho hlahisa le ho lokisoa ha lisebelisoa tse ncha, ntle le moo. E boetse e sebelisoa bakeng sa ho hlomathisa polymer, polycondensation ea extrusion e sebetsang.Liindasteri tse amehang li kenyelletsa lisebelisoa tsa ka tlung, likoloi, likhokahano, theknoloji ea elektroniki, ts'ireletso ea naha, sebaka sa sefofane, ts'ireletso ea tikoloho, indasteri ea lik'hemik'hale, thepa ea kaho, matla a motlakase, joalo-joalo.
- 2.Nts'etsopele ea theknoloji e ncha ea polymer ea extrusion e nang le sekoti sa mafahla
Hajoale, tataiso ea nts'etsopele ea lisebelisoa tse ncha tsa polymer, tseo haholo-holo li entsoeng ka li-nanomaterials, li-plastiki tse senyehang, asphalt e fetotsoeng le lisebelisoa tse entsoeng ka lehong-polasetiki, e leng setsi sa indasteri ea lisebelisoa tsena, 'me theknoloji ea extrusion ea twin-screw extrusion e fetoha senotlolo sa ho phethahatsa kholo ea indasteri.Ha ho bapisoa le lisebelisoa tse tloaelehileng tsa polyolefin, lisebelisoa tsena li na le phapang e kholo sebopeho sa sistimi ea thepa, sebopeho sa limolek'hule le thepa ea rheological.
(1).Nanomaterials e fetoha mofuta o mocha oa thepa e hlahisoang ke linaha tse fapaneng lefatšeng.Ho tloha tokisong ea nanometer masterbatch ho fihlela tlhahiso ea li-plastiki tse fetotsoeng tsa nanometer, twin-screw extruder e bapala karolo e ke keng ea nkeloa sebaka ho nts'etsopele ea li-plastiki tsa nanometer.Taba ea pele, ka lebaka la kabo ea boholo ba li-nanomaterials, litlamorao tsa ho kopanya le ho hasana li tlameha ho ba tse phahameng.Taba ea bobeli, ho lokisoa ha nanometer masterbatch bakeng sa litšoaneleho tsa inviscid ho qhibiliha, boima bo tlase, bo na le palo e kholo ea extrusion ea khase le li-additives nakong ea ho tlosa lihlahisoa tsa ho bola, le polymer ea setso tlas'a maemo a fapaneng a litšoaneleho tsa polasetiki tse kang brittleness e phahameng, ho pholisa le mokhoa oa sehlahisoa o felile o fapane le mokhoa o tloaelehileng oa polyolefin masterbatch.Ho tloha ho kopanya le ho etsa polasetiki extruder ho tsidifatso le granulation, ho hlokahala lintlafatso tse ngata tse ncha.Ka hona, mokhoa o akaretsang oa ho pholisa oa polymer e qhibilihisitsoeng o ke ke oa amoheloa.Sehlahisoa sa ho qetela se hlahisoa ka ho amohela mokhoa oa ho fepa o koetsoeng ka pokello ea phofo, ho amohela karolo e ncha ea rotor e sebetsang hantle haholo ka har'a screw, ho beha mofuta oa buffer exhaust mode ka silinda, le ho sebelisa tsela ea ho fetisa le ho pholile, ho pshatla pele. le ho silakanya ka thepa hlobolisa tsidifatso le silakanya.
(2) .Ho na le starch e ngata ho nts'etsopele ea lipolasetiki tse senyehang tse tletseng starch, li-plastics tse senyehang habeli le li-plastic thermoplastic tsa starch kaofela.Ntle le ho etsa polasetiki le ho li kopanya, ho felloa ke matla ha metsi le ho ajoa ha nako ea ho lula ka har'a ts'ebetso ea extrusion ho fetohile mathata a lokelang ho rarolloa ha o kopanya le granulating.Ka hona, ho ea ka lisebelisoa tse ikhethileng, tekanyo e nepahetseng ea "screw-diameter" e nepahetseng, sebaka sa ho tima le bongata, sebopeho sa screw le tlhophiso, mokhoa oa tlatsetso le ntlha ea ho eketsa e lokela ho khethoa ho leka le ho tseba hore na tlhophiso ke efe;Ka nako e ts'oanang, thekenoloji ea ts'ebetso le thekenoloji le tsona li fetoha bothata bo ka sehloohong ba ho senyeha ha polasetiki ea mafahla-screw extrusion.Theknoloji ea bohlokoa e kaholimo e ka ipapisa le boiphihlelo bo atlehileng bo teng, bo kopantsoeng le liteko tsa ts'ebetso ea extrusion le tlhahlobo ea liphetho, qetellong ba lekola tlhophiso ea lisebelisoa tsa ts'ebetso ea extrusion.
(3) .Sekontiri se fetotsoeng se fetohile tataiso e ncha ea phetoho ea thepa ea polymer.E tsepamisitse maikutlo ts'ebelisong ea eona kahong ea litsela tse kholo, merero ea ho aha boema-fofane le merero ea katoloso, ho ntlafatsa ho hanyetsa mocheso oa eona le thepa e fokolang ea mocheso ke eona tataiso e ka sehloohong ea ho ntlafatsa boleng ba kopo ea eona.Ka lebaka la kabo e pharaletseng ea boima ba limolek'hule le sebopeho sa macromolecule, phetoho ea asphalt ha ea ntlafatsoa haholo.Asphalt e fetotsoeng e ikhethile haholo, ka bobeli e na le litšobotsi tsa ho kopanya polasetiki ea rabara, empa hape e na le litaba tsa sehlahisoa ka mor'a ts'ebetso, lipalangoang tsa mafahla a screw extruder, likarolo tse kopanyang tsa nts'etsopele, joalo ka extrusion granulation li behiloe litlhoko tse ncha. , e hloka boqapi ba ho nts'etsapele sebopeho sa mofuta o mocha le tlhophiso ea "screw element", "console" e khethiloeng ka makhetlo a mabeli ho mefuta eohle ea liteko, joalo ka bolelele ba sekoti ho isa ho bophara ba karolelano, palo le boemo ba karolo ea ho tima, sekhahla sa ho kuta, sebopeho sa extruding le sebopeho. , joalo-joalo.
(4) .Mabapi le saense ea lintho tse bonahalang, WPC ke thepa e ncha e nang le bokhoni bo boholo.Ho tlalehoa hore metsoako ea fiber ea limela e 'nile ea sebelisoa haholo indastering ea likoloi, indasteri ea kaho, indasteri ea lipalangoang, indasteri ea lifofane joalo-joalo ka lebaka la thepa ea bona e phahameng ea mechine, boima bo khethehileng, matla a khethehileng, ho monya molumo le biodegradability.Ka fiber ea lehong, phofo ea lehong e kopantsoeng le matrix a resin, motsoako oa mekhoa e fapaneng ea fiber ea lehong ka thepa e kopantsoeng e fumanoang ka ho hasanya ho tšoana ha phapang e kholo haholo, ho hlokomela indasteri ea motsoako oa polasetiki ea lehong tlhahiso ena e ncha ea thepa ke senotlolo sa Ts'ebetso ea extrusion le mofuta o ikhethileng oa sebopeho sa extruder, ntlha ea ntlafatso ea theknoloji e ka har'a litsela tsa ho tjhaja tse arohaneng, sebopeho se ikhethileng sa screw, TME le ZME element, sistimi ea phetisetso ea gear e phahameng ea torque, bolelele bo boholo ho isa ho bophara ba sekhahla le D/ Di = 1.55 molumo oa mahala. , mokhoa oa mohato o le mong oa tlhahiso ea twin-screw extrusion.
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Nako ea poso: Aug-22-2019