Iphoyinti le-DMF elibilayo: Ukubheka okuphelele kwezakhiwo ze-dimethylformamide
I-DimethLylformaMide (DMF) i-organic solvent esetshenziswa kabanzi kwizimboni zamakhemikhali, ezenza imithi kanye ne-elekthronikhi. Kulesi sihloko, sizoxoxa ngokuningiliziwe indawo ebilayo ye-DMF, impahla ebalulekile yenyama, futhi ihlaziye umthelela wayo ezinhlelweni ezisebenzayo.

1. Izici eziyisisekelo ze-DMF
I-DMF iwuketshezi olungenamibala onombala onombala onobuthakathaka we-ammonia. Kuyinto ye-solvent ye-polar futhi ayinakuphikwa ngamanzi futhi ama-solvents amaningi we-organic. Ngenxa ye-solubility yayo enhle kanye nephuzu elibilayo eliphakeme, i-DMF ivame ukusetshenziswa ku-syntheris yamakhemikhali, ukusabela kwe-polymerisation, ukukhiqizwa kwefilimu kanye nefilimu. Ukwazi iphuzu elibilayo le-DMF kungenye yezikhiye zokusebenzisa kahle le solvent.

2. Liyini iphuzu elibilayo le-DMF?
I-DMF inendawo ebilayo engu-307 ° F (153 ° C). Leli phuzu eliphakeme eliphakeme livumela i-DMF ukuthi isetshenziswe emazingeni okushisa aphakeme ngaphandle kokushintshana, futhi ukuqina kwe-DMF BOINT PHEZULE kwenza kubelungelwe ukusabela okuningi okudinga ukushisa, okuvuthayo kwesixazululo, kanye nokusebenza okuphezulu kwezinhlelo eziphakeme zodwa. Kulezi zicelo, i-DMF ihlinzeka ngemvelo ephephile nefanele yokuphendula.

3. Umthelela we-DMF ebilayo iphuzu kuhlelo lokusebenza lwayo
Iphuzu elibilayo le-DMF lithinta ngqo isicelo salo emikhakheni ehlukene. Embonini yezemithi, iphuzu elibi kakhulu lisho ukuthi i-DMF ingancibilikisa izidakamizwa ezinzima ukuxazulula izidakamizwa eziphakeme emazingeni okushisa aphezulu, ngcono ukusebenza kahle kokuhlanganiswa kwezidakamizwa. Embonini yamakhemikhali, i-DMFS ebilayo ephezulu isetshenziswa ekuphendukeni okudinga amazinga okushisa aphezulu, njengokukhiqizwa kwama-resins nama-polyamides. Le mpahla futhi yenza i-DMF ibe yi-solvent efanelekile yokuvuthwa kwamazinga okushisa okuphezulu nama-inks.
Ngakolunye uhlangothi, iphuzu elibilayo le-DMF libuye lithinta ukulamula kwalo nokulahlwa kwalo kwemvelo. Lapho kudingeka khona i-distillation ukuze uthole kabusha i-DMF, iphuzu layo elibilayo linquma ukusetshenziswa kwamandla kanye nokusebenza kahle kwenqubo yokutakula. Ngakho-ke, ezihlolweni zezimboni, hhayi kuphela izindawo zamakhemikhali ze-DMF ezidinga ukubhekwa, kepha futhi nomphumela wephuzu lokubilisa kwinqubo yokusebenza kudinga ukubhekwa.

4. Imiphumela yokushisa kumaphoyinti abilayo e-DMF
Yize iphuzu le-DMF elibilayo lingu-153 ° C ngokucindezela okujwayelekile komkhathi, izinguquko ekucindezelweni okukhona nazo zingathinta iphuzu elibilayo. Ezingcindezi eziphansi, iphuzu elibilayo le-DMF liyancipha, okuyinzuzo yezinqubo zokuhlobisa i-vacuum lapho i-solvent ilulama ingatholakala khona emazingeni okushisa aphansi anomonakalo omncane ezintweni ezibucayi zokushisa. Ukuqonda kanye nolwazi lwezinguquko eqoqweni elibilayo le-DMF ezingcindezini ezihlukile kuyingxenye ebalulekile yokwenza kahle inqubo yezimboni.
I-5. Ukuphepha kanye nokucatshangelwa kwemvelo

I-DMF ngamakhemikhali aguqukayo, futhi naphezu kwephuzu elibi eliphakeme, ukunakekelwa kufanele kuthathwe ukuvimba izingozi zokuzithandela ngesikhathi sokusebenza okushisa okuphezulu. Ukuchayeka isikhathi eside kumugqa we-DMF kungahle kube nomthelela empilweni yabantu, izinyathelo ezifanele zokuvikela ezifana nokugqoka imishini yokuvikelwa okuphefumula kanye nokuqinisekisa umoya omncane kufanele kuthathwe ngesikhathi senqubo, futhi ukulahlwa koketshezi lwe-DMF imfucuza kumele futhi kulandele imithethonqubo yemvelo eqinile vimbela ukungcoliswa kwemvelo.

Ukubeka kafushane
Ukuqonda iphuzu elibilayo le-DMF nokuthi kuthinta kanjani izicelo zezimboni ulwazi olubalulekile kulabo abasebenza kwizimboni zamakhemikhali nezemithi, kanti iphuzu elibi kakhulu le-DMF ku-153 ° C likunikeza inzuzo enkulu ekusebenzeni okuphezulu kakhulu. Ukuqonda okufanele ngomthelela wamaphoyinti ama-DMF abilayo ngezinqubo kanye nezindlela zokuphepha kungasiza ekuzuzeni izinqubo, kuthuthukise ukusebenza kahle futhi kuqinisekise ukuphepha okusebenzayo. Kubalulekile ukulandela imithetho yezokuphepha nezemvelo lapho ufaka i-DMF ukuqinisekisa ukuthi izinzuzo zalo zikhuliswe.