PET (polyethylene terephthalate) ke polymer ea thermoplastic e sebelisoang haholo bakeng sa lits'ebetso tse fapaneng, joalo ka ho paka, masela le boenjiniere.PET e na le lisebelisoa tse ntle tsa mochini, tse futhumatsang le tsa mahlo, 'me e ka sebelisoa hape le ho sebelisoa hape bakeng sa lihlahisoa tse ncha.Leha ho le joalo, PET e boetse ke thepa ea hygroscopic, e bolelang hore e monya mongobo o tsoang tikolohong, 'me sena se ka ama boleng ba eona le ts'ebetso ea eona.Mongobo ho PET o ka baka hydrolysis, e leng karabelo ea lik'hemik'hale e pshatlang liketane tsa polymer mme e fokotsa intrinsic viscosity (IV) ea thepa.IV ke tekanyo ea boima ba limolek'hule le tekanyo ea polymerization ea PET, 'me ke sesupo sa bohlokoa sa matla, ho satalla le ho sebetsa ha thepa.Ka hona, ho bohlokoa ho omisa le ho khantša PET pele ho extrusion, ho tlosa mongobo le ho thibela tahlehelo ea IV.
Se omisitsoeng ka kristale ea infrared PET Granulationke theknoloji e ncha le e ncha e sebelisang leseli la infrared (IR) ho omisa le ho khantša li-flakes tsa PET ka mohato o le mong, pele o li fepa ho extruder bakeng sa ts'ebetso e tsoelang pele.Leseli la IR ke mofuta oa mahlaseli a motlakase a nang le maqhubu a pakeng tsa 0.7 le 1000 microns, 'me a ka monngoa ke PET le limolek'hule tsa metsi, a etsa hore li thothomele le ho hlahisa mocheso.Leseli la IR le ka kenella ka har'a li-flakes tsa PET 'me la li futhumatsa ho tsoa ka hare, e leng se etsang hore ho omisoe ka potlako le ka mokhoa o sebetsang hantle le ho kristale ho feta mekhoa e tloaelehileng, e kang ho omisa moea o chesang kapa ho omisa.
PET Granulation ea infrared crystal dryer e na le melemo e mengata ho feta mekhoa ea setso ea ho omisa le ea kristale, joalo ka:
• Nako e fokotsehileng ea ho omisa le crystallization: Leseli la IR le ka omella le ho khantša li-flakes tsa PET ka metsotso ea 20, ha li bapisoa le lihora tse 'maloa tse hlokoang ke mekhoa e tloaelehileng.
• Ho fokotsa matla a matla: Leseli la IR le ka omella le ho khantša li-flakes tsa PET ka matla a matla a 0.08 kWh / kg, ha a bapisoa le 0.2 ho 0.4 kWh / kg e hlokahalang ka mekhoa e tloaelehileng.
• Mongobo o fokotsehileng: Leseli la IR le ka omella le ho khantša li-flakes tsa PET ho mongobo oa ho qetela o ka tlaase ho 50 ppm, ha o bapisoa le 100 ho 200 ppm e finyelloang ka mekhoa e tloaelehileng.
• Ho fokotsa tahlehelo ea IV: Leseli la IR le ka omella le ho khantša li-flakes tsa PET ka tahlehelo e fokolang ea IV ea 0.05, ha e bapisoa le tahlehelo ea 0.1 ho 0.2 IV e bakoang ke mekhoa e tloaelehileng.
• Ho eketseha ha bongata ba bongata: Leseli la IR le ka eketsa bongata bo bongata ba li-flakes tsa PET ka 10 ho 20%, ha li bapisoa le tsa pele, tse ntlafatsang ts'ebetso ea phepelo le tlhahiso ea extruder.
• Boleng bo ntlafetseng ba sehlahisoa: Leseli la IR le ka omisa le ho khantša li-flakes tsa PET ntle le ho baka mosehla, ho senyeha kapa ho silafala, e leng ho ntlafatsang ponahalo le thepa ea lihlahisoa tsa ho qetela.
Ka melemo ena, Infrared crystal dryer PET Granulation e ka ntlafatsa ts'ebetso le boleng ba PET extrusion, mme e ka fihlela litlhoko tsa likopo tsa maemo a lijo.
Ts'ebetso ea Infrared crystal dryer PET Granulation e ka aroloa ka mehato e meraro ea mantlha: ho fepa, ho omisa le ho khantša, le ho ntša.
Ho fepa
Mohato oa pele oa Infrared crystal dryer PET Granulation ke ho fepa.Mothating ona, li-flakes tsa PET, tse ka bang moroetsana kapa tsa sebelisoa hape, li fepeloa ka har'a mochini o omisang IR ka screw feeder kapa hopper.Li-flakes tsa PET li ka ba le mongobo oa pele oa ho fihla ho 10,000 ho 13,000 ppm, ho itšetlehile ka mohloli le maemo a polokelo.Sekhahla sa ho fepa le ho nepahala ke lintlha tsa bohlokoa tse amang ts'ebetso ea ho omisa le ho kristale le boleng ba sehlahisoa.
Ho omisa le ho kristale
Mohato oa bobeli oa Infrared crystal dryer PET Granulation oa omisa ebile oa khanya.Mohato ona, li-flakes tsa PET li pepesehetse leseli la IR ka har'a moqomo o potolohang, o nang le mocha oa spiral le li-paddles ka hare ho eona.Leseli la IR le hlahisoa ke banka e emeng ea li-emitters tsa IR, tse bohareng ba moropa.Leseli la IR le na le bolelele ba li-microns tse 1 ho isa ho tse 2, tse lokiselitsoeng sebopeho sa ho monya ha PET le metsi, 'me li ka kenella ho fihla ho 5 mm ka har'a li-flakes tsa PET.Leseli la IR le futhumatsa li-flakes tsa PET ho tloha ka hare, ho etsa hore limolek'hule tsa metsi li fetohe mouoane 'me limolek'hule tsa PET li thothomele le ho itlhophisa hape ka sebopeho sa kristale.Mouoane oa metsi o tlosoa ke moea o potolohileng, o phallang ka har'a moqomo ebe o tlosa mongobo oo.Mocha oa spiral le li-paddles li fetisa li-flakes tsa PET haufi le axis ea moropa, ho netefatsa hore ho na le khanya e tšoanang le ea homogeneous ho khanya ea IR.Mokhoa oa ho omisa le oa kristale o nka metsotso e ka bang 20, 'me o fella ka mongobo oa ho qetela o ka tlaase ho 50 ppm le tahlehelo e fokolang ea IV ea 0.05.Ts'ebetso ea ho omisa le ho kristale e boetse e eketsa bongata ba li-flakes tsa PET ka 10 ho isa ho 20%, mme e thibela ho ba mosehla le ho senyeha ha thepa.
Extruding
Mohato oa boraro le oa ho qetela oa Infrared crystal dryer PET Granulation e ntse e tsoela pele.Mohato ona, li-flakes tsa PET tse omisitsoeng le tse khabisitsoeng li fepeloa ho extruder, e qhibilihisang, homogenizes, le ho bopa thepa ho lihlahisoa tse lakatsehang, tse kang li-pellets, likhoele, lifilimi kapa libotlolo.Extruder e ka ba mofuta o le mong-screw kapa mafahla-screw, ho itšetlehile ka litlhaloso tsa sehlahisoa le li-additives tse sebelisoang.Extruder e ka boela ea e-ba le sephahla sa vacuum, se ka tlosang mongobo leha e le ofe o setseng kapa mefokolo ho tloha ho qhibiliha.Ts'ebetso ea extruding e susumetsoa ke lebelo la screw, tlhophiso ea screw, mocheso oa moqomo, die geometry le melt rheology.Ts'ebetso ea extruding e tlameha ho ntlafatsoa ho fihlela extrusion e boreleli le e tsitsitseng, ntle le mefokolo, joalo ka ho qhibiliha ha fracture, lefu la ho ruruha, kapa ho se tsitse ha dimensional.Ts'ebetso ea extruding e ka boela ea lateloa ke ts'ebetso ea ka mor'a phekolo, e kang ho pholisa, ho itšeha, kapa ho bokella, ho itšetlehile ka mofuta oa sehlahisoa le thepa e tlaase.
Qetello
Infrared crystal dryer PET Granulation ke buka e ncha le theknoloji e ncha e sebelisang leseli la IR ho omisa le ho khantša li-flakes tsa PET ka mohato o le mong, pele o li fepa ho extruder bakeng sa ts'ebetso e tsoelang pele.Theknoloji ena e ka ntlafatsa ts'ebetso le boleng ba PET extrusion, ka ho fokotsa nako ea ho omisa le ea kristale, tšebeliso ea matla, mongobo, le tahlehelo ea IV, le ka ho eketsa bongata ba bongata le boleng ba sehlahisoa.Theknoloji ena e ka boela ea finyella litlhoko tsa likopo tsa maemo a lijo, ka ho boloka IV le ho thibela mosehla le ho senyeha ha PET.Theknoloji ena e ka kenya letsoho ho ts'ebetsong le moruo o chitja oa PET, ka ho nolofalletsa ho tsosolosoa le ho sebelisoa ha PET bakeng sa lihlahisoa tse ncha.
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Nako ea poso: Jan-25-2024