Ethylene glycol monomethyl ether (yakapfupikiswa seMOE), inozivikanwawo seethylene glycol methyl ether, imvura isina ruvara uye yakajeka, inosanganiswa nemvura, doro, acetic acid, acetone uye DMF. Sechinonyungudutsa chakakosha, MOE inoshandiswa zvakanyanya sechinonyungudutsa mafuta akasiyana-siyana, cellulose acetates, cellulose nitrates, madhayi anonyunguduka nedoro uye maresini ekugadzira.

sumo yekutanga

2-Methoxyethanol
CAS 109-86-4
Nhamba yeCB: CB4852791
Fomura yeMorekuru: C3H8O2
huremu hwemorekuru: 76.09
Nzvimbo yekunyunguduka: -85°C
Pokufashaira: 124-125°C (yakapfava)
Kuwanda: 0.965g/mL pa25°C (yakapfava)
Kumanikidzwa kwemhepo: 6.17mmHg (20°C)
Chiratidzo cheRefractive: n20/D1.402(lit.)
Pokupenya kwechiedza: 115°F
Mamiriro ekuchengetedza: Chengeta pa+5°C kusvika+30°C

Chikumbiro chekugadzira

1. Nzira yekugadzirira

Yakabva pakusangana kwe ethylene oxide ne methanol. Wedzera methanol ku boron trifluoride ether complex, wobva waisa ethylene oxide pa25-30°C uchikurunga. Mushure mekunge nzira yapera, tembiricha inokwira yega kusvika pa38-45°C. Mhinduro inobuda inorapwa ne potassium hydrocyanide- Bvisa mhinduro ye methanol ku pH=8-9Chemicalbook. Dzorera methanol, inyungudise, wounganidza zvikamu zvisati zvasvika pa130°C kuti uwane chigadzirwa chisina kuchena. Wobva waita fractional distillation, wounganidza fraction ye123-125°C sechigadzirwa chapera. Mukugadzirwa kwemaindasitiri, ethylene oxide ne anhydrous methanol zvinogadziriswa pakupisa kwakanyanya uye kumanikidzwa pasina catalyst, uye chigadzirwa chinobereka goho rakakura chinogona kuwanikwa.

2. Mashandisirwo makuru

Chigadzirwa ichi chinoshandiswa semushonga wemafuta akasiyana-siyana, lignin, nitrocellulose, cellulose acetate, madhayi anonyungudika nealcohol uye maresini ekugadzira; semushonga wekuona iron, sulfate necarbon disulfide, semushonga wekuisa machira, uye cellophane. Mumasealers ekurongedza, mavarnish anoomesa nekukurumidza uye enamel. Inogona zvakare kushandiswa semushonga unopinza uye unoenzanisa muindasitiri yedhayi, kana sepurasitiki uye inopenya. Semushonga wepakati mukugadzirwa kwemakemikari eorganic, ethylene glycol monomethyl ether inonyanya kushandiswa mukugadzirwa kweacetate ne ethylene glycol dimethyl ether. Ndiyo zvakare chinhu chekugadzira bis(2-methoxyethyl) phthalate plasticizer. Musanganiswa we ethylene glycol monomethyl ether neglycerin (ether: glycerin = 98:2) chinhu chinowedzera mafuta ejet chinogona kudzivirira icing uye bacterial corrosion. Kana ethylene glycol monomethyl ether ikashandiswa sejet fuel antisize agent, huwandu hwekuwedzera hunosvika 0.15% ± 0.05%. Ine hydrophilicity yakanaka. Inoshandisa hydroxyl group yayo mumafuta kuti ibatane nehuwandu hwemamorekuru emvura ari mumafuta. Kuumbwa kwehydrogen bond association, pamwe chete nenzvimbo yayo yekutonhora yakaderera, kunoderedza nzvimbo yekutonhora yemvura mumafuta, zvichiita kuti mvura ipinde muchando. Ethylene glycol monomethyl ether imushonga unodzivirira utachiona.

Kurongedza, kuchengetera uye kutakurwa

Imba yekuchengetera zvinhu inofefeterwa nemhepo uye inoomeswa patembiricha yakaderera; inochengetwa yoga kubva kune zvinooxidative.

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