Methyl methacrylate (MMA) ine mashandisirwo akasiyana-siyana:
Mashandisirwo makuru: Semonomer yegirazi reorganic (polymethylmethacrylate, PMMA), inoshandiswa kugadzira mapurasitiki akajeka.
Mamwe mapurasitiki nependi: Anoshandiswa kugadzira mamwe maresini, mapurasitiki, nependi, zvichipa zvinhu zvakakosha zvemaindasitiri aya.
Mashandisirwo akawanda emaindasitiri: Semushonga wekuisa mafuta, wematanda necork, mushonga wekunyikisa macoil emota, mushonga wekupukuta mapepa, muchina wekudhinda nekudhaya machira, mushonga wekurapa dehwe uye zvinhu zvekuzadza insulation, nezvimwewo, inoshandiswa zvakanyanya muminda yakawanda yemaindasitiri.
Mushonga wefungi: Semushonga wefungi weSclerotium, unoshandiswa mukugadzira mishonga yezvipembenene.
Methyl methacrylate chinhu chakakosha chemakemikari. Utsi hwayo nemhepo zvinogona kugadzira musanganiswa unoputika. Ndapota cherechedzai kuchengetedzeka pakushandisa kwayo4. Haingoiti basa guru chete muindasitiri yemapurasitiki nependi, asiwo inoita basa rakakosha mune dzimwe nzvimbo dzakawanda.
Imwe neimwe yenzira idzi ine hunhu hwayo, uye nzira dzakakodzera dzekugadzira dzinogona kusarudzwa zvichienderana nezvinodiwa nemamiriro ezvinhu chaiwo.
Nzira dzekugadzira methyl methacrylate (MMA) dzinosanganisira zvinotevera:
Nzira yeAcetone cyanohydrin: Shandisa acetone sechinhu chisina kugadzirwa, tanga waita nehydrocyanic acid kugadzira acetone cyanohydrin, wozoipisa ne concentrated sulfuric acid ne methanol kuti iite hydrolysis, kushaya mvura mumuviri uye esterification reactions kugadzirira MMA. Iyi nzira inowanzo shandiswa kugadzira MMA. Iyi tekinoroji yakakura, asi hydrocyanic acid yezvinhu zvisina kugadzirwa ine chepfu yakawanda uye marara matatu akaoma kurapa.
Nzira yeIsobutylene: Isobutylene inosanganiswa kuita methacrolein nemhepo paine catalyst, yozosanganiswa kuita methacrylic acid, uye pakupedzisira inosanganiswa ne methanol kuti iwane MMA. Kunewo nzira imwe chete ye oxidation iyo inosanganiswa zvakananga kuti igadzire methacrylic acid uye yozoisimbisa.
Nzira yePropylene: Kuita kwecarbonylation kwepropylene, carbon monoxide uye methanol kunoburitsa 2-methoxyisobutyric acid methyl ester, iyo inozoora kuita MMA uye methanol mushure mehydrolysis.
Hunhu hweMethyl methacrylate
Pokunyunguduka -48 °C (yakapfava)
Pokufashaira 100 °C (yakapfava)
kuwanda kwemafuta 0.936 g/mL pa25 °C (yakapfava)
huwandu hwemhepo 3.5 (zvichienzaniswa nemhepo)
kumanikidzwa kwemhepo 29 mm Hg (20 °C)
chiratidzo che refractive n20/D 1.414(lit.)
FEMA 4002 | METHYL 2-METHYL-2-PROPENOATE
Fp 50 °F
tembiricha yekuchengetera. 2-8°C
kunyungudika 15g/l
chimiro cheCrystalline Powder kana Crystals
ruvara Chena kusvika yero isina kujeka
Kunhuhwirira kwe dipropylene glycol pa 0.10%. Acrylic aromatic fruity
Mhando yeAcrylate yeRudzi rwekunhuhwirira
Hwema Hwekunhuhwirira 0.21ppm
muganho wekuputika 2.1-12.5%(V)
Kunyungudika kwemvura 15.9 g/L (20 ºC)
Merck 14,5941
Nhamba yeJECFA 1834
BRN 605459
Mutemo waHenry Constant 2.46 x 10-4 atm?m3/mol pa20 °C (inenge - inoverengerwa kubva mukunyungudika kwemvura uye kumanikidzwa kweutsi)
Miganhu yekuonekwa kwechinhu ichi NIOSH REL: TWA 100 ppm (410 mg/m3), IDLH 1,000 ppm; OSHA PEL: TWA 100 ppm; ACGIH TLV: TWA 100 ppm ine TWA neSTEL values dziri pakati pe50 ne100 ppm, zvichiteerana.
Dielectric constant 2.9 (20℃)
Kugadzikana: Kusagadzikana
Ruzivo rwekuonana
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