Dimethyl Carbonate (DMC): Nu vevi aɖe si me aɖi mele o, si wɔa dɔ nyuie ŋutɔ hena Dzɔdzɔmeŋusẽŋununya si Li Eteƒe Didi
Dzɔdzɔmeŋusẽŋununya ƒe Nɔnɔmewo Kple Molekyulãwo Ŋuti Nugɔmesese
Viɖe Siwo Le Xɔtuɖoɖo Ŋu
Aɖi si mebɔ o: Ne LD5 (nu me, sisiblisi) nye 6400 mg/kg la, DMC le dedie ŋutɔ wu methylation atike xoxowo (le kpɔɖeŋu me, dimethyl sulfate, LD2 = 140 mg/kg), si wɔ ɖe EU REACH ƒe sedede si ku ɖe ɖiƒoƒonu siwo menɔa anyi ɖaa o ŋu dzi.
Nuwɔwɔ ɖe nu ŋu:
Methylation: Methoxy ƒuƒoƒo (−OCH3 ) nana methyl ƒuƒoƒoa ƒe asitɔtrɔ le dedie, eye wòxɔa aɖi ƒe atike bubuwo teƒe.
Carbonylation: Carbonyl ƒuƒoƒo (−CO−) naa ester ƒe asitɔtrɔ kple aminolysis nɔa bɔbɔe, si doa alɔ polycarbonate ƒe wɔwɔme si me phosgene mele o.
Eƒe ʋeʋẽ lilili: Esi dielectric constant nye 3.1 ta la, DMC tsakana kple aha sesẽwo, ketones, kple esters nyuie, evɔ eƒe akpa aɖe melɔ̃na le tsi me (1.6 g/100 mL le 20°C).
Dzɔdzɔmeŋutete Ŋuti Nyatakaka Veviwo
DMC ƒe dzoxɔxɔ si nye 90.5°C na wòsɔ na dzoxɔxɔ si le titina ƒe dɔwɔwɔ kple ʋeʋẽ ƒe gbugbɔgaxɔ, si hiã ŋusẽ si mede 30% o wu benzene-si wotu ɖe dɔwɔwɔ dzi. Eƒe ʋeʋẽ si le sue (0.664 mPa・s) doa sisi ɖe ŋgɔ le dɔwɔwɔwo abe lithium batri electrolytes ene me, esime vaporization enthalpy si nye 363 kJ/kg kpɔa egbɔ be nusiwo wotsɔ blaa nu kple nusiwo wotsɔna léa nu ɖe nu ŋu ƒe ƒuƒu ƒe agbɔsɔsɔme si sɔ. De dzesii: Eƒe bɔmb ƒe didime (3.1–20.5% vol) hiã 防爆 (wowó-sesẽ) yaƒoƒo ƒe ɖoɖowo.
Dɔwɔƒewo ƒe Dɔwɔwɔ Vovovowo
Green Synthesis Nu yeyewo dodo ɖe ŋgɔ
Polycarbonate (PC) ƒe wɔwɔme:
Dɔwɔwɔ si me Phosgene Manɔ o: DMC wɔa nu kple bisphenol A (BPA) to transesterification dzi tsɔ wɔa diphenyl carbonate (DPC), si emegbe wowɔa polymerized wòzua PC. Mɔnu sia doa atɔm ƒe dɔwɔwɔ ɖe ŋgɔ va ɖoa 92% (ne wotsɔe sɔ kple 65% le phosgene mɔ xoxowo gome) eye wòɖea aɖinuwo ɖa.
Adzɔnuwo ƒe Dɔwɔwɔ: PC ƒe aŋɔ siwo do tso eme naa kekeli ƒe ≥90%, dzoxɔxɔ ƒe dzoxɔxɔ si trɔna 135°C, kple 10% ƒe ŋusẽkpɔɖeamedzi si lolo wu PC si woɖe tso phosgene me, si wozãna le elektrɔnikmɔ̃wo ƒe ʋuƒo kple ʋu ƒe akaɖi ƒe nutsyɔnu me.
Atikewo & Agblemenukuwo:
Methylation Reactions: Exɔna ɖe dimethyl sulfate teƒe le dzitodzito me atikewo (le kpɔɖeŋu me, nifedipine) kple blanuilélenutsitikewo (le kpɔɖeŋu me, sertraline) wɔwɔ me, si naa nuku ƒe ŋeŋe nyona ɖe edzi 15–20% kple methanol abe eƒe kpeɖeŋutɔ ɖeka kolia ene.
Carbonylation Dɔwɔwɔ: Wozãnɛ le carbaryl (nudzodzoeviwutike) wɔwɔ me be woaƒo asa na HCl ƒe xɔxlɔ̃, si ɖea gazazãwo dzi kpɔtɔna 25%.
Ŋusẽ Yeye & Nusiwo Wozãna
Lithium Batri ƒe Elektrikŋusẽwo:
Ne wotsɔ ethylene carbonate (EC) kple ethyl methyl carbonate (EMC) tsaka DMC la, ewɔa elektrikŋusẽnamɔ̃ siwo da sɔ siwo ƒe ionic ƒe tsɔtsɔme dea 1.2 mS/cm. Esia kekea batri ƒe tsatsam ƒe agbenɔƒe ɖe enu va ɖoa zi gbɔ zi 1,200 (ŋutete ƒe léle ɖe asi ≥85%), si ɖoa EU ƒe Batri ƒe Sedede (2023/0051) gbɔ hena aɖi si mebɔ o. Woxɔe xoxo le Tesla ƒe 4680 batri wɔwɔ me.
Nusiwo Woate Ŋu Agblẽ le Nu Gbagbewo Ŋu:
Wotsɔ propylene oxide kpe ɖe eŋu be wòawɔ polypropylene carbonate (PPC), nusiwo wotu ɖe DMC dzi la xɔa 40% CO2 eye wogblẽna le ɣleti 6–12 me, si kpɔa plastik gbeɖuɖɔ siwo le kplɔ̃dzinu siwo wozãna zi ɖeka kple agbledefefewo me gbɔ.
Coatings & Nusiwo Wotsɔna Kpena Ðe Nu Ŋu
Eco-Friendly Solvents: Exɔna ɖe toluene/xylene teƒe le ʋuwo ƒe OEM amadedewo me, si naa VOC ƒe agbɔsɔsɔ ≤50 g/L (si le GB 24409-2020 ƒe dzidzenuwo te nyuie). Woɖea ɣeyiɣi si wotsɔ ƒua gbe dzi kpɔtɔna va ɖoa gaƒoƒo 2, eye film ƒe sesẽme ɖoa 2H.
Formaldehyde-Free Adhesives: Wozãnɛ le xɔmenuwo ƒe panel ƒe kadodo me, DMC-siwo wotu ɖe polyurethane adhesives dzi la ƒe formaldehyde femaxee ≤0.01 mg/m3 (E0 grade), si kpena ɖe IKEA ŋu be wòaɖe formaldehyde ƒe dodo dzi akpɔtɔ tɔn 500+ ƒe sia ƒe.
Nutome ƒe Viɖewo & Mɔ̃ɖaŋununya ƒe Kuxiwo
Nusiwo Li Eteƒe Didi ƒe Nya Veviwo
Atɔm ƒe Ganyawo: Woate ŋu agbugbɔ awɔ nusiwo wotsɔ wɔa dɔe abe methanol ene to tsi gbegblẽwo me, si ɖea COD ƒe agba si le tsi gbegblẽwo me dzi kpɔtɔna 70% ne wotsɔe sɔ kple mɔnu xoxowo.
Carbon Capture: PC si menye phosgene o ƒe wɔwɔme ɖea carbon footprint dzi kpɔtɔna 45%, esime DMC tɔn ɖesiaɖe si wowɔ la zãa CO2 tɔn 0.6 tso elektrikdɔwɔƒe ƒe dzotsimɔ̃ me, si doa alɔ CCU (carbon capture and utilization).
Nu yeyewo dodo ɖe ŋgɔ ƒe liƒowo
Gazazã dzi ɖeɖe kpɔtɔ: CO2 ƒe wɔwɔme tẽ ƒe mɔnu (si zãa methanol, CO2, kple Pd-based catalysts) ɖea nu xoxowo ƒe gazazã dzi kpɔtɔna 30%, eye Sinopec ƒe dodokpɔdɔwɔƒea te ŋu wɔa kiloton-dzidzenu.
Ultra-Dzadzɛnyenye Egbɔkpɔnuwo: Membrane mama-adsorption mɔ̃ɖaŋununya ɖoa elektrɔnik-grade DMC kple ga ions ≤1 ppb kple dzadzɛnyenye ≥99.999%, ɖo SEMI C87 dzidzenuwo na semiconductor dzadzɛnyenye.
Dedienɔnɔ ƒe Dɔwɔɖoɖowo: Microencapsulated DMC (si wofa ɖe SiO2 nanoshells me) doa keklẽ ƒe teƒea ɖe dzi va ɖoa 60°C, si dzi TÜV Rheinland ɖo kpee be ele dedie le ʋuɖoɖo me.
Nusiwo wogblɔ tso eŋu
| Adzɔnuwo ƒe Ŋkɔ | Propionic Acid si wotsɔna ƒoa ƒui | |||||||||
| Atikewo ƒe Mɔfiame | C3H6O2 | |||||||||
| Molekyulãwo ƒe Kpekpeme | 74.08 g/mol | |||||||||
| Dzedzeme | Tsi si me kɔ si me amadede mele o | |||||||||
| Dzoxɔxɔ ƒe Teƒe | -20.8°C ye nye esi | |||||||||
| Teƒe si Woɖaa Nu le | 141.1°C ƒe dzoxɔxɔ | |||||||||
| Toto | 0.993 g/cm3 ƒe kpekpeme | |||||||||
| CAS NO | 79 - 09 - 4. Ƒe 1999 me | |||||||||
| HS ƒe Sedede | 29155000 ƒe xexlẽme | |||||||||
| EINECS NO | 201 - 176 - 3. Ƒe 1999 me | |||||||||
| Mᴐbibia | Wozãnɛ le plastic, pharma, nuɖuɖu, solvents kple ami ʋeʋĩwo me | |||||||||
Dzɔdzɔmeŋusẽŋununya Dzikpɔgbalẽvi
| Adzɔnuwo ƒe Ŋkɔ | Propionic Acid si wotsɔna ƒoa ƒui | ||||||
| NU | STANDARD VALUE (%) ƑE NUÐEÐEŊUTI . | DODOKPƆ ƑE ASIXƆXƆ(%) . | |||||
| Propionic Acid ƒe Agbɔsɔsɔ, w/%≥ | 99.5 | 99.9 | |||||
| Eƒe kpekpeme (20/20°C) . | 0.993-0.997 ƒe ɣeyiɣia me | 0.996 ƒe xexlẽme | |||||
| Dzoxɔxɔ ƒe Agbɔsɔsɔme/°C | 138.5-142.5 ƒe xexlẽme | 139.4-141.1 ƒe xexlẽme | |||||
| Evaporation ƒe nugbagbevi susɔe,w / %≤ | 0.01 ƒe xexlẽme | 0.006 ƒe xexlẽme | |||||
| Tsi,w/%≤ | 0.15 | 0.02 ƒe xexlẽme | |||||
| Aldehyde,w/%≤ ƒe kpekpeme | ≤0.05 ye nye ema | 0.04 ƒe xexlẽme | |||||
| oxidization bɔbɔe,w/%≤ | ≤0.05 ye nye ema | 0.01 ƒe xexlẽme | |||||
| Pb mg/kg≤ ƒe xexlẽme | 2.0 | ≤2.0 ye nye ema | |||||
| Abe mg/kg≤ ene | 3.0 | ≤3.0 ye nye ema | |||||
| Nyanuwuwuw | Wɔ ɖe GB 1886.210-2016 ƒe dzidzenuwo dzi | ||||||
Nukatae Nàtia Míaƒe DMC?
Ŋusẽ Vevi Ene
Dzadzɛnyenye ƒe Kakaɖedzi:
Míaƒe transesterification ɖoɖo si yia edzi kple etɔ̃ distillation naa dɔwɔƒe-grade DMC (≥99.5%) kple elektrɔnik-grade (≥99.99%), kple methanol ≤100 ppm. Nya: Batri ƒe asisi aɖe si zãa míaƒe DMC la ɖo 98.7% gbãtɔ ƒe charge-discharge ƒe dɔwɔwɔ nyuie gbɔ (dɔwɔƒea ƒe mamã dedie 95%).
Trɔ asi le nu ŋu ƒe ŋutete:
Atike siwo wowɔ ɖe ɖoɖo nu na acid ƒe asixɔxɔ (≤0.001 mgKOH/g), tsidzadza (≤50 ppm), kple peroxides (≤5 ppm). Le kpɔɖeŋu me, míewɔ DMC si me acid bɔbɔ ŋutɔ (0.0005 mgKOH/g) hena atike siwo me acid sea veve le ƒe wɔwɔme.
Ganyawo ƒe Kpɔɖeŋu si le Kplɔ̃ɖoƒe:
Wogbugbɔ zãa methanol ƒe akpa aɖewo tsɔ zua syngas (CO+H2) hena DMC wɔwɔ, si wɔnɛ be wokpɔa nuwo ƒe dɔwɔwɔ nyuie 95% eye wòɖea CO2 ƒe dodo dzi kpɔtɔna tɔn 3 le DMC tɔn ɖeka me. Wokɔa gbeɖuɖɔwo ƒe bablawo ŋu to CO2 si le vevie ŋutɔ dzi hena wo gbugbɔgazã 95%.
Xexeame Katã ƒe Sedziwɔwɔ:
Ewɔ ɖeka kple GB/T 1628-2020, ASTM D7056, kple JIS K 1551. GHS ƒe dzesidenu siwo wowɔ ɖe ɖoɖo nu kple MSDS ɖo nutome ƒe nudidiwo gbɔ (le kpɔɖeŋu me, India BIS, Brazil INMETRO), si wɔnɛ be woate ŋu awɔ dukɔmeviwo ƒe mɔɖeɖe gaƒoƒo 72.
Mɔɖeɖedɔa wɔwɔ le Dzɔdzɔmeŋusẽŋununya si Li Eteƒe Didi
Dimethyl Carbonate le asi trɔm le dɔwɔƒewo ŋu to eƒe "aɖi mele eme o, ewɔa dɔ nyuie, eye woate ŋu azãe ake" nɔnɔmewo dzi. Míetsɔ mía ɖokui na be míawɔ dɔ yeyewo kple egbɔkpɔnu siwo me carbon mesɔ gbɔ ɖo o, eye míenaa kpekpeɖeŋu tso nuwuwu vaseɖe nuwuwu tso nu xoxowo dzi va ɖo dɔwɔwɔwo dzi. Míaƒe DMC tiatia fia be míawɔ ɖeka kple nusiwo li tegbee—afisi tsidzadza ɖesiaɖe ʋãa ɖiƒoƒo dzi ɖeɖe kpɔtɔ, ŋusẽzazã nyuie, kple mɔ̃ɖaŋununya ƒe ŋgɔyiyi, eye wo katã woatu atikewo ƒe etsɔme si me amagbewo mele o ɖo.