Kamora hore karolo ea filthara ea kerese e sebelisoe nako e telele moleng o ohiang oa filament, e tla koalloa ke litšila, 'me phapang ea khatello lipakeng tsa ho kenella le ho tsoa ha sisteme ea filthara ea polymer e tla eketseha,' me filthara ena ea kerese e koetsoeng e tla eketseha. e hloekisoe pele e ka sebelisoa hape.Ho hloekisa ho sebelisoa haholo mekhoa ea 'mele le ea lik'hemik'hale ho calcine, ho qhala, oxidize kapa hydrolyze polymer e khomaretsoeng ka mocheso o phahameng, ebe o hlatsoa metsi, ho hlatsoa ka alkali (acid) le ho hloekisa ka mahlaseli.
Mekhoa ea ho hloekisa e kenyelletsa: mokhoa oa calcinations, bate ea letsoai, mokhoa oa tri-ethylene glycol, mokhoa o phahameng oa mocheso oa hydrolysis, mokhoa oa bethe oa alumina, le mokhoa oa ho hloekisa li-vacuum.Hona joale, mekhoa e sebelisoang haholo ea ho hloekisa ke mokhoa oa tri-ethylene glycol, mokhoa o phahameng oa mocheso oa hydrolysis, le mokhoa oa ho hloekisa li-vacuum.
Mokhoa oa tri-ethylene glycol ke ho sebelisa molao-motheo oa hore polymer e ka qhibiliha ke tri-ethylene glycol sebakeng se belang sa tri-ethylene glycol (285 ° C ka khatello e tloaelehileng) ho finyella morero oa ho hloekisa.Mohato oa ho hloekisa ke ho kenya ntho e lokelang ho hloekisoa ka har'a tanka ea tri-ethylene glycol e nang le tsamaiso ea ho futhumatsa, e phahamise ho tloha mocheso oa kamore ho ea hoo e ka bang 265 ° C, e boloke e futhumetse lihora tse 6, ebe e tlohela ho pholile ho fihlela ho 100 ° C. ka tlhaho, ntša ntho e lokelang ho hloekisoa, 'me ue behe Hlatsoa ka tanka ea metsi a chesang hoo e ka bang 95 ° C ka metsotso e ka bang 20, ebe u e kenya ka tharollo ea 10% ea NaOH ka mocheso oa 60-70 ° C bakeng sa Lihora tse 12, ebe u li hlatsoa ka metsi a chesang.Haeba e le spinneret le melt filter element, hoa hlokahala ho hloekisa ka ultrasonic.Sebaka sa ho hloekisa ke metsi a hloekileng ka mocheso oa 60-70 ° C.Nako ea ho hloekisa ke metsotso e 15-20 'me e qetella e omisitsoe ka moea o hatelitsoeng.
Mokhoa o phahameng oa mocheso oa hydrolysis ke ho sebelisa polymer hore e be hydrolyzed habonolo le alkaline hydrolyzed ka mocheso o phahameng ho hlahisa lintho tse tlaase tsa limolek'hule, e le ho finyella morero oa ho tlosoa.Ke ho kenya ntho e lokelang ho hloekisoa ka har'a autoclave, ho fepa mouoane oa 0.3-0.6MPa, mocheso o ka bang 130-160 ° C, 'me nako ke lihora tse 2-8.Ka autoclave, haeba palo e nyenyane ea NaOH e eketsoa, nako ea ho hloekisa e ka khutsufatsoa, ebe joale ho hlatsoa metsi, ho hlatsoa alkali, le ho hloekisa ka ultrasonic ho ka sebelisoa.
Mokhoa oa ho hloekisa li-vacuum o boetse o bitsoa mokhoa oa vacuum pyrolysis.Molao-motheo oa eona oa ho sebetsa ke ho qala ho phahamisa mocheso ho 300 ° C le ho o boloka o futhumala ka nako e itseng ho qhibiliha polyester kapa li-polymer tse ling tse phahameng mosebetsing o lokelang ho sebetsoa, 'me thepa e entsoeng ka ho qhibilihisoa e tsoa ebe e lokolloa.Ebe o futhumala, hoo e ka bang 350 ° C, polyester e setseng e qala ho senyeha, ka nako ena, bulela pompo ea vacuum ho tsoa, ho chesa hoo e ka bang 500 ° C, 'me u futhumale.Ka nako e ts'oanang, moea o monyenyane o hlahisoa ho oxidize masala.Sebakeng sa vacuum, ho bola ha mocheso le ho bola ha oxidative ea polyester e setseng ho potlakile, 'me khase e hlahisoang le likaroloana tsa molora li monngoa ho fihlela sepheo sa ho hloekisa.
Nako ea poso: Aug-01-2023