Inqaku le-DMF elibilayo: Ukujonga okubanzi kwipropathi ye-dimyethylformas
I-Dimyethylformamomide (DMF) sisinyibilikisi esisetyenziswa kakhulu kwikhemikhali, amayeza kunye nemizi-mveliso ye-elektroniki. Kweli nqaku, siza kuthetha ngokweenkcukacha indawo yokubila kwe-DMF, ipropathi ephambili emzimbeni, kwaye ihlalutya ifuthe layo kwizicelo ezisebenzayo.

1. Iipropati ezisisiseko ze-DMF

I-DMF lulwelo olubonakalayo olungenamibala kwiphunga elibuthathaka ye-ammonia. Siyinyibiliki yePolar kwaye ayibonakali ngamanzi kwaye uninzi lweenyibilikisi. Ngenxa yolwalolo lwayo oluphezulu kunye nendawo ebilayo ephezulu, i-DMF isetyenziswa ngokutsha kwi-Synthesic Synthesi, i-Polymeridation, iFirer kunye neMveliso yefilimu. Ukwazi indawo yokubila ye-DMF yenye yezitshixo zokusetyenziswa ngokufanelekileyo kwesi sinyibiliki. 2.

2. Ithini indawo yokubila ye-DMF?

I-DMF inendawo yokubila engama-307 ° F (153 ° C). Inqaku elinomsindo eliphezulu livumela i-DMF ukuba isetyenziswe kumaqondo obushushu aphakamileyo ngaphandle kokuzinza, kunye nokuzinza kwendawo yokubila i-DMF kwenza ukuba kubekho ubushushu, i-slickreation ye-sliepment. Kwezi zicelo, i-DMF ibonelela ngendawo ekhuselekileyo nefanelekileyo yokuphendula. 3.

I-3. Impembelelo yendawo yokubila i-DMF kwisicelo sayo

Indawo yokubila ye-DMF ichaphazela indlela yayo kumashishini ahlukeneyo. Kumzi-mveliso wamayeza, indawo ebilayo ebilayo ithetha ukuba i-DMF inokuchithwa nzima-ukusombulula amachiza asebusweni, ukuphucula ukusebenza kakuhle kwe-synthesis yeziyobisi. Kumzi-mveliso wekhemikhali, i-DMfs ephezulu yendawo yokubiba isetyenziselwa ukuphendula okufuna amaqondo obushushu aphezulu, anjengemveliso yokwabuya kunye nee-polyamides. Le propati ikwasenza i-DMF i-SOLLPE ye-Solvent yeqondo lokushisa eliphezulu kunye nee-inki.
Kwelinye icala, indawo yokubila ye-DMF ikwachaphazela ukubuyela kwakhona kunye nokudalwa kwendalo. Apho kuya kufuneka sanda i-DMF, indawo yayo yokubila ibeka ukusetyenziswa kwamandla kunye nokusebenza kakuhle kwenkqubo yokubuyisela kwimeko yesiqhelo. Ke ngoko, kwizicelo zemizi mveliso, hayi kuphela iipropathi zekhemikhali ze-DMF kufuneka ziqwalaselwe, kodwa nefuthe lendawo yokubila kwiNkqubo yokuSebenza kufuneka ithathelwe ingqalelo.

I-4. Iziphumo zobushushu kwi-DMF yokubila

Nangona indawo yokubila i-DMF ingama-153 ° C kwi-themospheric themospheric the pumeric, utshintsho kwingcinezelo ye-Ambil inokuchaphazela inqaku lokubila. Kwingcinezelo esezantsi, indawo yokubila ye-DMF iyancipha, enguncedo lweenkqubo zokuphazamiseka kweSolvent apho kufunyenwe khona amaqondo obushushu aphantsi ngomonakalo ophantsi. Ukuqonda kunye nolwazi lotshintsho kwindawo yokubila i-DMF kwiingcinezelo ezahlukeneyo yinxalenye ebalulekileyo yokuphucula inkqubo yeshishini.

I-5. Ukhuseleko kunye nokusingqongileyo

I-DMF yikhemikhali yekhemikhali, kwaye ngaphandle kwendawo ebilayo ebilayo, inkathalo kufuneka ithathwe ukuthintela iingozi zengxilongo ngexesha lokusebenza kobushushu obuphakathi. Ukuboniswa ixesha elide kumphunga we-DMF kunokuba nefuthe kwimpilo yabantu, ke amanyathelo afanelekileyo okhuselo njengokunxiba izixhobo zokuphefumla kunye nokuqinisekisa ukuba ulwelo olusebenzayo lwe-DMF kufuneka lilandele ungcoliseko lwendawo esingqongileyo ukukhusela ungcoliseko lwendalo esingqongileyo ukukhusela ungcoliseko lwendalo.
Isishwankathelo
Ukuqonda indawo yokubila i-DMF kunye nokuba ichaphazela njani izicelo zeshishini kulwazi olubalulekileyo kwabo basebenza kumashishini amachiza kunye ne-DMF ephezulu ye-DMF kwi-153 ° C inika ithuba elibalulekileyo kumashishini obushushu obuphezulu. Ukuqonda ngokufanelekileyo kwempembelelo ye-DMF yemanqaku yokubila kwiinkqubo kwaye amanyathelo okhuseleko anokukunceda ukuphucula iinkqubo, ukuphucula ukusebenza ngokukuko nokuqinisekisa ukhuseleko. Kubalulekile ukuba ulandele ukhuseleko kunye nemigaqo yokusingqongileyo xa usebenzisa i-DMF ukuqinisekisa ukuba izibonelelo zayo zandiswa. "