Polyethylene bokake mofuta oa boka ba polyolefin synthetic, eo ka kakaretso e bolelang homopolyethylene e nang le boima ba molek'hule bo ka tlase ho 10000. Ka kutloisiso e pharaletseng, li-polymers tsa ethylene tse nang le matla a fokolang le a thata 'me li ke ke tsa sebetsoa e le ntho e le' ngoe e ka bitsoa boka ba polyethylene.Pe bokae na le ntlha e phahameng ea ho nolofatsa, viscosity e tlase e qhibilihang, botsitso bo botle ba lik'hemik'hale, mafura a matle le metsi.E le thuso ea ho sebetsa, e sebelisoa haholo liphaepheng tsa PVC, lifilimi, likhoele le lihlahisoa tse ling tsa polasetiki le rabara ho ntlafatsa ts'ebetso ea lihlahisoa le ho ntlafatsa ponahalo ea lihlahisoa tse felileng.
Mokhoa oa ho itokisa oa boka ba polyethylene
Ho na le mekhoa e meraro ea mantlha ea maiketsetso ea pe wax.Ea pele ke mokhoa oa ho petsoha oa polyethylene, o pshatlang resin ea polyethylene ka boka ba polyethylene e nang le boima bo tlase ba molek'hule ka mocheso o phahameng.Ea bobeli ke mokhoa oa ho hloekisa ka lihlahisoa, o bokellang lihlahisoa tsa likarolo tse tlaase tsa boima ba limolek'hule tse hlahisoang ts'ebetsong ea tlhahiso ea ethylene polymerization le ho li hloekisa ho fumana boka ba polyethylene.Mokhoa oa boraro ke mokhoa oa ho kopanya oa ethylene, o kopanyang boka ba polyethylene ka ho toba ka ethylene e le lisebelisoa tse tala.Kajeno, Sainuo e tla u isa ho ithuta ka boka ba polyethylene e lokisitsoeng ka mokhoa oa ho petsoha le mokhoa oa ho kopanya.
(1) Ho lokisetsa boka ba polyethylene ka pyrolysis
Mokhoa oa ho petsoha ke mokhoa o ka sehloohong oa ho hlahisa boka ba polyethylene Chaena.Boima bo phahameng ba limolek'hule polyethylene e hloekileng kapa polasetiki ea litšila ea polyethylene e phunyeletsoa ka boka ba polyethylene ka mocheso o phahameng.Boleng ba sehlahisoa sa eona le thepa (e kang ho thatafala, ntlha ea ho qhibiliha le 'mala o bonahalang) li ameha haholo ke mohloli oa lihlahisoa tse tala.Mokhoa oa ho qhekella o na le theknoloji e bonolo, mohloli o ruileng oa lisebelisoa tse tala le litšenyehelo tse tlase tsa ts'ebetso.E ka hlokomela ho sebelisoa hape ha litšila tsa polyethylene ka melemo e metle ea moruo.Leha ho le joalo, mokhoa oa ho phunyeha o thata ho laola, ho aroloa ha boima ba limolek'hule tsa sehlahisoa ho pharaletseng, boleng ba boka ba polyethylene bo thata ho laola, 'me mabala a mangata a matšo a hlahisoa.E tumme lits'ebetsong tse bohareng le tse tlase tse kang colorbatch ea mebala.
Mekhoa e teng ea ho phunyeha e kenyelletsa ho phunyeha ha mocheso, ho phunyeha ho thusang ho qhibiliha le ho phunyeha ha catalytic.Har'a tsona, ho phunyeha ha mocheso ke ho bonolo ka ho fetisisa.Lihlahisoa tsa boka ba polyethylene li ka lokisoa ka ho laola mocheso oa karabelo le nako, empa ho hlokahala tšebeliso e ngata ea matla.Batho ba tsoang Univesithing ea Beijing ea theknoloji ea lik'hemik'hale ba ithutile ho lokisoa ha boka ba polyethylene ka ho phunya resin ea PE ka mocheso o phahameng ka sekoti se le seng sa extruder.Mofuthu o eketsoa phala e kopanyang pakeng tsa extruder le tanka e pholileng ho futhumatsa le ho senya thepa.Mocheso o nepahetseng oa ho phunyeha ke 420 ℃, ho hlokomela tlhahiso e tsoelang pele ea ho senya resin ea PE ho lokisa boka ba polyethylene.Ba bang ba ithutile ho lokisoa ha boka ba polyethylene ka ho petsola litšila tsa polyethylene ka har'a autoclave e nang le al-mcm-48 joalo ka mokelikeli.Mocheso oa karabelo ke 360 ~ 380 ℃ 'me nako ea ho arabela ke 4H.Tšebeliso ea catalyst e fokotsa matla a ts'ebetso ea karabelo, mocheso o hlokahalang bakeng sa pyrolysis le tšebeliso ea matla.Wang Lulu le ba bang ba ntlafalitse tlhahiso ea boka ba polyethylene ka pyrolysis e thusang ka solvent ea polasetiki ea litšila ea polyethylene.Liphello tsa lihlapolli tse fapaneng le maemo a karabelo ho chai le thepa ea boka li ile tsa fuputsoa.Tlhahlobo e bontša hore lihlahisoa tsa boka ba polyethylene li ka ntlafatsoa ka ho sebelisa li-solvents tse nkhang hamonate.Ha o sebelisa xylene e tsoakiloeng e le solvent, chai e fihla holimo ho 87.88%.Li-solvents tse nkhang hamonate li ka boela tsa ntlafatsa boleng ba sehlahisoa ho isa bohōleng bo itseng 'me tsa fumana boka ba bosehla ba polyethylene.
(2) Synthesis ea boka ba polyethylene
Polyethylene wax e entsoeng ka kotloloho ho tsoa ho ethylene e na le bohloeki bo phahameng, kabo e nyane ea boima ba limolek'hule, mofuta o moqotetsane oa ho qhibiliha, ts'ebetso e feto-fetohang ea sehlahisoa le boleng bo tsitsitseng.E sebelisetsoa ho hlahisa boka ba boleng bo phahameng le bo fapaneng ba polyethylene.Ho ea ka mochine oa polymerization le mefuta ea li-catalyst tse sebelisoang, motsoako oa ethylene o ka aroloa ka polymerization ea mahala, Ziegler Natta (ZN) catalytic polymerization, metallocene catalytic polymerization joalo-joalo.
Qingdao Sainuo Chemical Co., Ltd.Re moetsi oa boka ba PE, boka ba PP, boka ba OPE, boka ba EVA, PEMA, EBS,Zinc/Calcium Stearate….Lihlahisoa tsa rona li fetile tlhahlobo ea REACH, ROHS, PAHS, FDA.
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Nako ea poso: Apr-27-2022