I-ethylene glycol monomethyl ether (efinyeziweyo njenge-MOE), ekwaziwa ngokuba yi-ethylene glycol methyl ether, lulwelo olungenambala nolucacileyo, oluxutywa namanzi, utywala, i-acetic acid, i-acetone kunye ne-DMF. Njenge-solvent ebalulekileyo, i-MOE isetyenziswa kakhulu njenge-solvent kwiigrisi ezahlukeneyo, ii-cellulose acetates, ii-cellulose nitrates, iidayi ezinyibilikayo ngotywala kunye nee-resin zokwenziwa.

intshayelelo esisiseko

I-2-Methoxyethanol
I-CAS 109-86-4
Inombolo ye-CB: CB4852791
Ifomula yemolekyuli: C3H8O2
ubunzima bemolekyuli: 76.09
Iqondo lokunyibilika: -85°C
Iqondo lokubila: 124-125°C (elikhanyayo)
Ubuninzi: 0.965g/mL kwi-25°C (elithayo)
Uxinzelelo lomoya: 6.17mmHg (20°C)
Isalathisi sokubonisa ukukhanya: n20/D1.402(lit.)
Incopho yokutsha: 115°F
Iimeko zokugcina: Gcina kwi+5°C ukuya+30°C

Isicelo semveliso

1. Indlela yokulungiselela

Ivela kwi-reaction ye-ethylene oxide kunye ne-methanol. Yongeza i-methanol kwi-boron trifluoride ether complex, kwaye udlule kwi-ethylene oxide kwi-25-30°C ngelixa uxuba. Emva kokuba i-passage igqityiwe, ubushushu bunyuka ngokuzenzekelayo bufike kwi-38-45°C. Isisombululo se-reaction esiphumayo siphathwa nge-potassium hydrocyanide- Nciphisa isisombululo se-methanol kwi-pH=8-9Chemicalbook. Buyisela i-methanol, uyinyibilikise, kwaye uqokelele amaqhezu ngaphambi kwe-130°C ukuze ufumane imveliso ekrwada. Emva koko yenza i-fractional distillation, kwaye uqokelele iqhezu le-123-125°C njengemveliso egqityiweyo. Kwimveliso yemizi-mveliso, i-ethylene oxide kunye ne-anhydrous methanol ziyaphendulwa kubushushu obuphezulu kunye noxinzelelo ngaphandle kwe-catalyst, kwaye imveliso enesivuno esiphezulu inokufumaneka.

2. Iindlela eziphambili zokusetyenziswa

Le mveliso isetyenziswa njengesinyibilikisi seeoyile ezahlukeneyo, i-lignin, i-nitrocellulose, i-cellulose acetate, iidayi ezinyibilikayo ngotywala kunye neeresini zokwenziwa; njenge-reagent yokumisela i-iron, i-sulfate kunye ne-carbon disulfide, njengesinyibilikisi seengubo, kunye ne-cellophane. Kwizinto zokupakisha, ii-varnishes ezomisa ngokukhawuleza kunye nee-enamel. Ingasetyenziswa njenge-arhente engena ngaphakathi kunye ne-arhente yokulinganisa kwishishini ledayi, okanye njenge-plasticizer kunye ne-brightener. Njenge-intermediate kwimveliso yeekhompawundi ze-organic, i-ethylene glycol monomethyl ether isetyenziswa kakhulu ekuqulunqweni kwe-acetate kunye ne-ethylene glycol dimethyl ether. Ikwayimpahla eluhlaza yokuvelisa i-bis(2-methoxyethyl) phthalate plasticizer. Umxube we-ethylene glycol monomethyl ether kunye ne-glycerin (ether: glycerin = 98:2) sisongezelelo samafutha e-jet yempi esinokuthintela i-icing kunye nokubola kwebhaktheriya. Xa i-ethylene glycol monomethyl ether isetyenziswa njenge-arhente yokuthintela ukwenziwa kwe-jet fuel, isixa esiqhelekileyo sokongeza yi-0.15% ± 0.05%. Inamandla okusebenzisa amanzi kakuhle. Isebenzisa iqela layo le-hydroxyl kwi-fuel ukuze isebenzisane nezixa ezimbalwa zeemolekyuli zamanzi kwi-oyile. Ukwakheka komanyano lwe-hydrogen bond, kunye nendawo yayo yokuqandisa ephantsi kakhulu, kunciphisa indawo yokuqandisa yamanzi kwi-oyile, okuvumela amanzi ukuba angene kwiqhwa. I-ethylene glycol monomethyl ether ikwayi-anti-microbial additive.

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