izindaba

I-Methyl methacrylate (MMA) inezinhlobo eziningi zokusetshenziswa:

Ukusetshenziswa Okuyinhloko: Njenge-monomer yengilazi ephilayo (i-polymethylmethacrylate, i-PMMA), esetshenziselwa ukukhiqiza amapulasitiki abonakalayo.
Amanye amapulasitiki kanye nezingubo zokumboza: Asetshenziselwa ukukhiqiza amanye ama-resin, amapulasitiki, kanye nezingubo zokumboza, okuhlinzeka ngezinto zokusetshenziswa ezibalulekile zale mboni.
Ukusetshenziswa okuningi kwezimboni: Njenge-lubricant, i-lumber kanye ne-cork size agent, i-motor coil soaking agent, i-paper polishing agent, i-textile printing and dyeing assistant, i-leather treatment agent kanye nezinto zokugcwalisa i-insulation, njll., isetshenziswa kabanzi emikhakheni eminingi yezimboni.
I-fungicide ephakathi: Njenge-intermediate ye-fungicide i-Sclerotium, isetshenziswa ekukhiqizeni izibulala-zinambuzane.
I-Methyl methacrylate iyinto ebalulekile yamakhemikhali. Umhwamuko wayo nomoya kungakha ingxube eqhumayo. Sicela uqaphele ukuphepha lapho uyisebenzisa 4. Ayigcini nje ngokudlala indima ebalulekile embonini yepulasitiki nezingubo, kodwa futhi idlala indima ebalulekile kweminye imikhakha eminingi.

Indlela ngayinye yalezi inezici zayo, futhi izindlela zokwenziwa ezifanele zingakhethwa ngokuya ngezidingo nezimo ezithile.

 

Izindlela zokulungiselela i-methyl methacrylate (MMA) zifaka phakathi okulandelayo:

Indlela ye-Acetone cyanohydrin: Sebenzisa i-acetone njengezinto zokusetshenziswa, qala ngokuphendula nge-hydrocyanic acid ukuze ukhiqize i-acetone cyanohydrin, bese uyishisa nge-sulfuric acid egxilile kanye ne-methanol ukuze wenze i-hydrolysis, ukuphelelwa amanzi emzimbeni kanye nokusabela kwe-esterification ukulungiselela i-MMA. Le ndlela iyindlela evamile yokukhiqiza i-MMA. Ubuchwepheshe buvuthiwe, kodwa i-hydrocyanic acid yezinto zokusetshenziswa inobuthi obukhulu futhi imfucuza emithathu iyinkimbinkimbi ukuyiphatha.
Indlela ye-Isobutylene: I-Isobutylene i-oxidized ibe yi-methacrolein ngomoya lapho kukhona i-catalyst, bese i-oxidized ibe yi-methacrylic acid, bese ekugcineni i-esterized nge-methanol ukuze kutholakale i-MMA. Kukhona futhi inqubo ye-oxidation yesinyathelo esisodwa e-oxidized ngqo ukuze kukhiqizwe i-methacrylic acid bese iyi-esterized.
Indlela ye-Propylene: Ukusabela kwe-carbonylation kwe-propylene, i-carbon monoxide kanye ne-methanol kukhiqiza i-2-methoxyisobutyric acid methyl ester, ehlukaniswa ibe yi-MMA kanye ne-methanol ngemva kwe-hydrolysis.

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Izakhiwo Zamakhemikhali ze-Methyl methacrylate
Iphuzu lokuncibilika -48 °C (ngokukhanya)
Iphuzu lokubila 100 °C (elikhanyayo)
ukuminyana 0.936 g/mL ku-25 °C (ngokukhanya)
ubuningi bomusi 3.5 (uma kuqhathaniswa nomoya)
umfutho womusi 29 mm Hg (20 °C)
inkomba yokubuyisa n20/D 1.414(lit.)
I-FEMA 4002 | I-METHYL 2-METHYL-2-PROPENOATE
Fp 50 °F
Izinga lokushisa lokugcina. 2-8°C
ukuncibilika 15g/l
ifomu le-Crystalline Powder noma amakristalu
umbala Omhlophe kuya kophuzi okhanyayo
Iphunga elingu-0.10% ku-dipropylene glycol. I-acrylic aromatic fruity
Uhlobo lwephunga i-acrylate
Umkhawulo Wephunga 0.21ppm
umkhawulo wokuqhuma 2.1-12.5%(V)
Ukuncibilika Kwamanzi 15.9 g/L (20 ºC)
I-Merck 14,5941
Inombolo ye-JECFA 1834
I-BRN 605459
I-Henry's Law Constant 2.46 x 10-4 atm?m3/mol ku-20 °C (cishe - kubalwa kusukela ekuncibilikeni kwamanzi kanye nomfutho womusi)
Imikhawulo yokuchayeka I-NIOSH REL: I-TWA 100 ppm (410 mg/m3), IDLH 1,000 ppm; I-OSHA PEL: I-TWA 100 ppm; I-ACGIH TLV: I-TWA 100 ppm enamanani ahlosiwe e-TWA kanye ne-STEL angu-50 kanye no-100 ppm, ngokulandelana.
I-dielectric constant 2.9 (20℃)
Ukuzinza: Okuguquguqukayo

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Isikhathi sokuthunyelwe: Okthoba-21-2025