"DMF Boiling Poindi: Kutarisisa Kwakazara kune Zvivakwa zveDimethylformamide
Dimethylformamide (DMF) is organic solvent inoshandiswa zvakanyanya mumaindasitiri emakemikari, emishonga uye emagetsi. Muchinyorwa chino, isu tichakurukura zvakadzama nzvimbo yekubikira yeDMF, yakakosha chivakwa chemuviri, uye ongorora maitiro ayo pane inoshanda maapplication.

1. Zvinhu zvinokosha zveDMF

DMF imvura isina ruvara inoonekera ine hunyoro hweammonia. Iyo polar solvent uye inosanganiswa nemvura uye yakawanda organic solvents. Nekuda kwekunyungudika kwayo kwakanaka uye yakakwira yekubikira poindi, DMF inowanzoshandiswa mumakemikari synthesis, polymerisation reactions, fiber uye kugadzirwa kwemafirimu. Kuziva nzvimbo yekubikira yeDMF ndiyo imwe yemakiyi ekushandiswa kwakakodzera kweiyi solvent. 2.

2. Chii chinonzi boiling point yeDMF?

DMF ine poindi yekuvira inosvika 307°F (153°C). Iyi nzvimbo yakakwira yekubikira inobvumira DMF kuti ishandiswe patembiricha yakakwira pasina kushanduka, uye kugadzikana kweiyo DMF yekubikira kunoita kuti ive yakakodzera kuita kwakawanda kunoda kupisa, senge high-temperature polymerisation, solution evaporation, uye yakakwirira inoshanda solvent masisitimu. Mune aya maapplication, DMF inopa yakachengeteka uye inoshanda maitiro nharaunda. 3.

3. Mhedzisiro yeDMF yekubikira poindi pakushandiswa kwayo

Iyo yekubikira poindi yeDMF inokanganisa zvakananga kushandiswa kwayo mumaindasitiri akasiyana. Muindasitiri yemishonga, nzvimbo yekubikira yakakwira inoreva kuti DMF inogona kunyungudutsa yakaoma-ku-kugadzirisa zvinodhaka pane tembiricha yepamusoro, ichivandudza kushanda kwezvinodhaka synthesis. Muindasitiri yemakemikari, yakakwira yekubikira poindi maDMF anoshandiswa mukuita zvinoda kupisa kwakanyanya, sekugadzirwa kweresin uye polyamides. Ichi chivakwa chinoitawo kuti DMF ive yakanakira solvent kune yakakwira tembiricha yekupfeka uye ingi.
Kune rimwe divi, iyo yekubikira yeDMF inokanganisawo kudzoreredza kwayo uye kuraswa kwehushamwari. Iko kunodiwa kuti distillation idzore DMF, nzvimbo yayo yekubikira inosarudza mashandisiro esimba uye kugona kwemaitiro ekudzoreredza. Naizvozvo, mumaindasitiri ekushandisa, kwete chete makemikari zvimiro zveDMF zvinofanirwa kutariswa, asiwo mhedzisiro yekubikira padanho rekushanda inoda kuverengerwa.

4. Temperature Effects paDMF Boiling Points

Kunyangwe iyo DMF inofashaira iri 153°C payakajairwa mhepo yemhepo, shanduko yeambient pressure inogonawo kukanganisa panovira. Pakudzvinyirirwa kwakaderera, nzvimbo yekubikira yeDMF inodzikira, inova mukana wevacuum distillation maitiro uko kudzoreredzwa kwesolvent kunogona kuwanikwa patembiricha yakaderera nekukuvadza kushoma kune zvinopisa-sensitive zvinhu. Kunzwisisa uye ruzivo rwekuchinja kweDMF yekubikira poindi pane kwakasiyana dzvinyiriro chikamu chakakosha chekugadzirisa maindasitiri maitiro.

5. Kuchengetedza uye kufunga nezvezvakatipoteredza

DMF ikemikari inoputika, uye pasinei nekupisa kwayo kwakanyanya, kutarisirwa kunofanira kutorwa kudzivirira njodzi dzekupisa panguva yekushanda kwekushisa kwepamusoro. Kuratidzwa kwenguva refu kumhute yeDMF kunogona kukanganisa hutano hwevanhu, saka matanho akakodzera ekudzivirira akadai sekupfeka midziyo yekudzivirira yekufema uye kuona mhepo yakanaka inofanirwa kutorwa panguva yekuita, uye kuraswa kweDMF tsvina yemvura kunofanirwawo kutevedzera mitemo yakasimba yezvakatipoteredza kudzivirira kusvibiswa kwezvakatipoteredza.
Summary
Kunzwisisa kuvira kweDMF uye kuti inobata sei kushandiswa kwemaindasitiri ruzivo rwakakosha kune avo vanoshanda mumakemikari nemishonga industries, uye nzvimbo yepamusoro yekubikira yeDMF pa153 ° C inopa mukana wakakosha mukushanda kwekushisa kwepamusoro. Kunzwisisa kwakaringana kwemhedzisiro yeDMF yekubikira mapoinzi pamatanho uye matanho ekuchengetedza anogona kubatsira kukwenenzvera maitiro, kuvandudza mashandiro uye kuve nechokwadi chekuchengetedza kushanda. Zvakakosha kutevedzera kuchengetedzwa uye mitemo yezvakatipoteredza paunenge uchishandisa DMF kuona kuti mabhenefiti ayo anowedzera. "