E tele fa'aoga o le Methyl methacrylate (MMA):
Fa'aoga autū: O se monomer o tioata fa'alenatura (polymethylmethacrylate, PMMA), e fa'aaogaina e gaosia ai palasitika manino.
Isi palasitika ma mea e ufiufi ai: Fa'aaogaina e gaosia ai isi resins, palasitika, ma mea e ufiufi ai, e maua ai mea mata autu mo nei alamanuia.
Tele faʻaaogāga faʻapisinisi: E fai ma suauʻu faʻasusu, vailaʻau e faʻateleina ai le laʻau ma le kopa, vailaʻau e faʻasusu ai le uili afi, vailaʻau e faʻamama pepa, vailaʻau e lolomi ma vali ai ie, vailaʻau e togafitia ai le paʻu ma mea e faʻatumu ai le insulation, ma isi mea faapena, e faʻaaogaina lautele i le tele o matata faʻapisinisi.
Vaega fa'afu'aisa: I le avea ai ma se vaila'au fa'afu'aisa o le Sclerotium, e fa'aaogaina i le gaosiga o vaila'au fa'amate iniseti.
O le Methyl methacrylate o se mea taua tele o vailaʻau mata. O lona ausa ma le ea e mafai ona fausia ai se paluga pāpā. Faʻamolemole ia mataala i le saogalemu pe a faʻaaogaina4. E le gata ina taua tele lona sao i le alamanuia o palasitika ma vali, ae taua foʻi lona sao i le tele o isi matāʻupu.
O nei metotia taʻitasi e iai ona lava uiga, ma e mafai ona filifilia auala talafeagai e faʻapipiʻi ai e tusa ai ma manaʻoga ma tulaga patino.
O auala e saunia ai le methyl methacrylate (MMA) e aofia ai mea nei:
Metotia o le Acetone cyanohydrin: Faaaoga le acetone o se mea mata, muamua fa'afefiloi ma le hydrocyanic acid e maua ai le acetone cyanohydrin, ona fa'avevela lea i le sulfuric acid fa'aputu ma le methanol e fa'atino ai le hydrolysis, dehydration ma le esterification reactions e saunia ai le MMA. O lenei metotia o se metotia masani mo le gaosia o le MMA. Ua matua le tekinolosi, ae o le mea mata o le hydrocyanic acid e matua oona ma e faigata ona togafitia otaota e tolu.
Metotia o le Isobutylene: E fa'a'okeseneina le Isobutylene i le methacrolein fa'atasi ai ma le ea i le i ai o se mea fa'atupu fa'alavelave, ona fa'a'okeseneina lea i le methacrylic acid, ma mulimuli ane fa'a'esterified i le methanol e maua ai le MMA. E iai fo'i se faiga fa'a'okeseneina e tasi le la'asaga e fa'a'okeseneina sa'o e fa'atupu ai le methacrylic acid ona fa'a'esterified lea.
Auala o le propylene: O le tali atu o le carbonylation o le propylene, carbon monoxide ma le methanol e maua ai le 2-methoxyisobutyric acid methyl ester, lea e vaevaeina i le MMA ma le methanol pe a uma le hydrolysis.
Methyl methacrylate Meatotino Fa'akemikolo
Tulaga e liusuavai ai -48 °C (lit.)
Pupula le tulaga 100 °C (lit.)
mafiafia 0.936 g/mL i le 25 °C (lit.)
mafiafia o le ausa 3.5 (vs le ea)
mamafa o le ausa 29 mm Hg (20 °C)
fa'asinomaga fa'ata'ita'i n20/D 1.414(tusitusiga)
FEMA 4002 | METHYL 2-METHYL-2-PROPENOATE
Fp 50 °F
vevela teuina 2-8°C
mafai ona solo 15g/l
foliga o le Pauta Kirisitala po'o Kirisitala
lanu Pa'epa'e i le samasama vaivai
Manogi i le 0.10% i le dipropylene glycol. acrylic manogi fuala'au
Ituaiga Manogi acrylate
Fa'atapula'a o le Manogi 0.21ppm
tapula'a pāpā 2.1-12.5%(V)
Fa'asolo i le Vai 15.9 g/L (20 ºC)
Merck 14,5941
Numera JECFA 1834
BRN 605459
Tulafono Tumau a Henry 2.46 x 10-4 atm?m3/mol i le 20 °C (tusa - fuafuaina mai le solubility i le vai ma le mamafa o le ausa)
Tapula'a e ono a'afia ai NIOSH REL: TWA 100 ppm (410 mg/m3), IDLH 1,000 ppm; OSHA PEL: TWA 100 ppm; ACGIH TLV: TWA 100 ppm fa'atasi ai ma tau fa'atatau o le TWA ma le STEL o le 50 ma le 100 ppm, i le fa'asologa lava lea.
Fa'aauau pea o le dielectric 2.9(20℃)
Mausali: Feoloolo
Fa'amatalaga Fa'afeso'ota'i
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