Dimethylamide / Dimethyl Formamide
Kev Siv:Dimethylamide (DMF) yog ib yam khoom siv tshuaj lom neeg tseem ceeb thiab cov kuab tshuaj ua haujlwm siab, feem ntau yog siv rau hauv kev lag luam xws li polyurethane, acrylic, tshuaj, tshuaj tua kab, dyes, khoom siv hluav taws xob, thiab lwm yam. Ua tus neeg sawv cev ntxuav thiab kho hauv kev lag luam polyurethane, nws feem ntau yog siv rau hauv kev tsim cov tawv nqaij ntub dej; Ua ib qho tshuaj nruab nrab hauv kev lag luam tshuaj, nws yog siv dav hauv kev tsim cov tshuaj doxycycline, cortisone, thiab sulfonamide; Ua ib qho kuab tshuaj hauv kev lag luam acrylic fiber, nws feem ntau yog siv rau kev tsim cov acrylic fibers qhuav; Siv hauv kev lag luam tshuaj tua kab los tsim cov tshuaj tua kab zoo thiab tsis muaj tshuaj lom; Siv ua cov kuab tshuaj zas xim hauv kev lag luam zas xim; Quenching ntawm cov khoom tinned thiab ntxuav cov circuit boards hauv kev lag luam hluav taws xob; Lwm yam kev lag luam suav nrog cov neeg nqa cov pa phem, cov kuab tshuaj rau cov tshuaj crystallization, cov nplaum, thiab lwm yam.
Lub npe tshuaj: N, N-dimethylacetamide
Dimethylacetamide yog ib qho tshuaj muaj zog polar non-protonated uas tuaj yeem yaj ntau yam tshuaj sib xyaw thiab sib xyaw nrog dej, ethers, ketones, esters, thiab lwm yam. Nws muaj kev ruaj khov thermal siab, tsis tshua muaj hydrolysis, tsis tshua muaj corrosion, thiab tsis muaj tshuaj lom. Nws muaj kev yaj zoo rau ntau yam resins, tshwj xeeb tshaj yog polyurethane resin thiab polyimide resin, thiab tuaj yeem siv ua cov tshuaj yaj rau cov fibers hluavtaws uas tiv taus cua sov, yas zaj duab xis, txheej, tshuaj, thiab acrylonitrile spinning. Dimethylacetamide, ua cov tshuaj lom tsawg, kub npau npau, thiab polarity siab non-proton solvent thiab tshuaj nruab nrab, yog siv dav hauv cov teb xws li cov ntaub ntawv hluavtaws, tshuaj, tshuaj tua kab, tshuaj fibers, roj av ua, thiab cov xim organic.
Cov kev siv tseem ceeb ntawm dimethyl formamide yog dab tsi?
01siv ua ib qho tshuaj reagent thiab cov kuab tshuaj rau ethylene resin thiab acetylene
02yog ib qho tshuaj organic zoo heev uas siv los ua cov tshuaj rau polyurethane, polyacrylonitrile, thiab polyvinyl chloride, nrog rau cov khoom siv raw rau cov tshuaj extractants, pharmaceuticals, thiab cov tshuaj tua kab xws li imidacloprid.
03Dimethylformamide tsis yog tsuas yog siv cov tshuaj siv dav dav xwb, tab sis kuj yog cov tshuaj yaj zoo heev uas siv tau ntau yam. Dimethylformamide yog cov tshuaj yaj zoo rau ntau yam polymers siab xws li polyethylene, polyvinyl chloride, polyacrylonitrile, polyamide, thiab lwm yam. Nws tuaj yeem siv rau kev sib hloov ntub ntawm cov fibers hluavtaws xws li polyacrylonitrile fibers thiab kev tsim cov polyurethane; Siv rau kev ua yas zaj duab xis; Nws kuj tseem siv tau ua cov tshuaj tshem xim rau kev tshem tawm xim; Nws kuj tseem tuaj yeem yaj qee cov xim tsis muaj zog, ua rau lawv muaj cov yam ntxwv ntawm cov xim. Dimethylformamide siv rau kev rho tawm aromatic hydrocarbon, nrog rau kev sib cais thiab rov qab butadiene los ntawm C4 feem thiab isoprene los ntawm C5 feem. Nws kuj tseem siv tau ua cov tshuaj reagent zoo rau kev sib cais cov khoom tsis yog hydrocarbon los ntawm paraffin. Nws muaj kev xaiv zoo rau kev yaj ntawm isophthalic acid thiab terephthalic acid: qhov yaj ntawm isophthalic acid hauv dimethylformamide ntau dua li hauv terephthalic acid. Kev rho tawm cov kuab tshuaj lossis ib feem crystallization hauv dimethylformamide tuaj yeem cais ob qho tib si. Hauv kev lag luam petrochemical, dimethyl formamide siv tau ua cov roj nqus rau kev sib cais thiab kho cov pa roj. Hauv cov tshuaj tiv thaiv organic, dimethylformamide tsis yog tsuas yog siv dav ua cov kuab tshuaj xwb, tab sis kuj yog ib qho tseem ceeb hauv kev tsim cov organic. Nws tuaj yeem siv los tsim chlorpyrifos hauv kev lag luam tshuaj tua kab; Hauv kev lag luam tshuaj, nws tuaj yeem siv los tsim cov pyrimidine iodide, doxycycline, cortisone, vitamin B6, iodoside, Qubijing, thiapyrimidine, N-formyl sarcolysin, antineoplastic acid, methoxyaromaine, bianzapine, cyclohexanone nitrourea, furfurouracil, hemostatic acid, Fenfenmethasone, medroxyprogesterone, biliveratrol, chlorpheniramine, thiab lwm yam. Dimethylformamide ua lub luag haujlwm catalytic hauv hydrogenation, dehydrogenation, dehydration, thiab dehalogenation reactions, txo qhov kub ntawm cov tshuaj tiv thaiv thiab txhim kho cov khoom purity.
04Cov tshuaj reagent titration uas tsis yog aqueous, cov kuab tshuaj rau ethylene resin thiab acetylene, organic synthesis, photometry, roj chromatography stationary phase (qhov kub ua haujlwm siab tshaj plaws 50 ℃, cov kuab tshuaj methanol), kev sib cais thiab kev tshuaj xyuas ntawm C2-C5 hydrocarbons, thiab lub peev xwm los sib cais cov khoom ib txwm muaj, isobutene, cis, thiab trans butene. Kev tshuaj xyuas cov tshuaj tua kab. Organic synthesis. Peptide synthesis. Siv rau hauv kev lag luam thaij duab.
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