Mushure meiyo kenduru sefa element yashandiswa kwenguva yakati rebei pane filament spinning mutsara, ichavharwa netsvina, uye mutsauko wekumanikidza pakati pekupinda nekubuda kweiyo melt polymer filtration system uchawedzera, uye aya akacheneswa kenduru sefa inoda icheneswe isati yashandiswa zvakare.Kuchenesa kunonyanya kushandisa nzira dzemuviri uye dzemakemikari kuita calcine, kunyungudutsa, oxidize kana hydrolyze iyo yakanamatira polymer pakupisa kwakanyanya, uye wobva wageza mvura, kugeza alkali (asidhi) uye kuchenesa kwe ultrasonic.
Nzira dzekuchenesa dzinosanganisira: calcinations method, salt bath, tri-ethylene glycol method, high temperature hydrolysis method, alumina fluidized bed method, uye vacuum cleaning method.Parizvino, nzira dzinowanzo shandiswa dzekuchenesa inzira ye tri-ethylene glycol, tembiricha yepamusoro hydrolysis nzira, uye vacuum yekuchenesa nzira.
Nzira ye tri-ethylene glycol ndeyokushandisa nheyo yokuti polima inogona kunyungudutswa ne-tri-ethylene glycol panzvimbo yekubikira ye-tri-ethylene glycol (285 ° C pakumanikidzika) kuti uwane chinangwa chekuchenesa.Nhanho yekuchenesa ndeyekuisa chinhu chinofanira kucheneswa mu-tri-ethylene glycol tank ine inodziya system, isimudze kubva mukamuri tembiricha kusvika pa265 ° C, ichengetedze ichidziya kwemaawa matanhatu, wozorega ichitonhora kusvika ku100 ° C. zvakasikwa, bvisa chinhu chinofanira kucheneswa, wochiisa mukati Chigeze mutangi remvura inopisa inenge 95 ° C kwemaminitsi angangoita makumi maviri, wozonyura mu 10% NaOH solution patembiricha ye60-70 ° C ye. Maawa gumi nemaviri, uye woigeza nemvura inopisa.Kana iri spinneret uye melt filter element, ultrasonic kuchenesa kunodiwa.Iyo yekuchenesa svikiro imvura yakachena pane tembiricha ye60-70 ° C.Nguva yekuchenesa ndeye 15-20 maminetsi uye pakupedzisira inoputika yakaoma nemhepo yakamanikidzwa.
Iyo yepamusoro-tembiricha hydrolysis nzira ndeye kushandisa iyo polymer kuve nyore hydrolyzed uye alkaline hydrolyzed pakupisa kwakanyanya kugadzira yakaderera-molecular zvinhu, kuitira kuzadzisa chinangwa chekubviswa.Iko kuisa chinhu chinofanira kucheneswa mu autoclave, feed steam ye 0.3-0.6MPa, tembiricha inenge 130-160 ° C, uye nguva iri maawa 2-8.Mu autoclave, kana zvishoma zveNaOH zvichiwedzerwa, nguva yekuchenesa inogona kupfupiswa, uye ipapo kushambidza mvura, kushambidza alkali, uye ultrasonic kuchenesa kunogona kushandiswa.
Iyo vacuum yekuchenesa nzira inonziwo vacuum pyrolysis nzira.Nheyo yayo yekushanda ndeyekutanga kusimudza tembiricha kusvika ku300 ° C uye kuichengeta ichidziya kweimwe nguva yekunyungudutsa polyester kana mamwe mapolima akakwirira pane basa rinofanirwa kugadziriswa, uye zvinhu zvakanyungudutswa zvinobuda uye zvinoburitswa.Zvadaro kupisa, panenge pa 350 ° C, iyo polyester yakasara inotanga kuora, panguva ino, shandura pombi yevacuum kuti ibude, inopisa kusvika ku500 ° C, uye ramba uchidziya.Panguva imwecheteyo, mhepo shoma inounzwa kuti iite oxidize zvakasara.Muvacuum state, kuora kwemafuta uye kuora kweoxidative yepolyester yakasara inokurumidza, uye gasi rinogadzirwa uye madota anosvetwa kuti azadzise chinangwa chekuchenesa.
Nguva yekutumira: Aug-01-2023