Bayan da kyandir tace kashi da ake amfani da wani lokaci a kan filament kadi line, shi za a katange da datti, da kuma matsa lamba bambanci tsakanin mashiga da kanti na narke polymer tacewa tsarin zai ƙara, kuma wadannan pleated kyandir tace bukatar. a tsaftace kafin a sake amfani da shi.Cleaning yafi amfani da jiki da sinadarai hanyoyin zuwa calcine, narkar da, oxidize ko hydrolyze da manne polymer a high zafin jiki, sa'an nan yi ruwa wanka, alkali (acid) wanka da ultrasonic tsaftacewa.
Hanyoyin tsaftacewa sun haɗa da: Hanyar ƙididdiga, wanka na gishiri, hanyar tri-ethylene glycol, hanyar hydrolysis mai zafi mai zafi, hanyar gado na alumina, da hanyar tsaftacewa.A halin yanzu, hanyoyin tsaftacewa da aka fi amfani da su sune hanyar tri-ethylene glycol, hanyar hydrolysis mai zafi mai zafi, da hanyar tsaftacewa.
Hanyar tri-ethylene glycol ita ce amfani da ka'idar cewa za a iya narkar da polymer ta hanyar tri-ethylene glycol a wurin tafasa na tri-ethylene glycol (285 ° C a matsa lamba na al'ada) don cimma manufar tsaftacewa.Matakin tsaftacewa shine sanya abin da za'a tsaftace shi a cikin tankin tri-ethylene glycol tare da tsarin dumama, daga shi daga zafin jiki zuwa kimanin 265 ° C, dumi shi na tsawon sa'o'i 6, sannan a bar shi ya huce zuwa 100 ° C. a dabi'a, fitar da abin da za a tsaftace, sannan a wanke shi a cikin tanki mai zafi a kimanin 95 ° C na kimanin minti 20, sannan a jika shi a cikin maganin NaOH 10% a zazzabi na 60-70 ° C don 12 hours, sa'an nan kuma wanke shi da ruwan zafi.Idan spinneret ne da nau'in tacewa mai narkewa, ana buƙatar tsaftacewa na ultrasonic.Matsakaicin tsaftacewa shine ruwa mai tsabta a zazzabi na 60-70 ° C.Lokacin tsaftacewa shine mintuna 15-20 kuma a ƙarshe an busa shi da iska mai matsewa.
Hanyar hydrolysis mai zafi mai zafi shine yin amfani da polymer don sauƙi mai sauƙi da kuma alkaline hydrolyzed a babban zafin jiki don samar da ƙananan kwayoyin halitta, don cimma manufar cirewa.Shi ne don sanya abin da za a tsaftace a cikin autoclave, ciyar da tururi na 0.3-0.6MPa, zafin jiki ne game da 130-160 ° C, da kuma lokacin ne 2-8 hours.A cikin autoclave, idan an ƙara ƙaramin adadin NaOH, za'a iya rage lokacin tsaftacewa, sa'an nan kuma ana iya amfani da wanke ruwa, wanke alkali, da tsaftacewa na ultrasonic.
Hakanan ana kiran hanyar tsabtace injin tsabtace iska ta hanyar vacuum pyrolysis.Ka'idar aikinsa ita ce ta fara ɗaga zafin jiki zuwa 300 ° C kuma a ci gaba da yin dumi na wani ɗan lokaci don narke polyester ko wasu manyan polymers a kan aikin da za a sarrafa, kuma narkakkar kayan yana gudana kuma a fitar da shi.Sa'an nan kuma zafi, a kimanin 350 ° C, ragowar polyester ya fara bazuwa, a wannan lokacin, kunna famfo don kwashe, zafi har zuwa 500 ° C, da dumi.A lokaci guda kuma, an gabatar da ƙananan iska don oxidize ragowar.A cikin vacuum state, thermal bazuwar da oxidative bazuwar na sauran polyester ne sauri, da kuma samar da iskar gas da kuma ash barbashi suna tsotse tafi don cimma manufar tsaftacewa.
Lokacin aikawa: Agusta-01-2023