Methyl methacrylate

Lub npe Suav: methyl methacrylate, hu ua MMA yog ib yam khoom siv tshuaj lom neeg tseem ceeb uas tuaj yeem ua polymerize lossis copolymerize nrog lwm cov monomers nyob rau hauv qhov muaj lub teeb thiab cua sov lossis catalysts. Nws feem ntau yog siv los tsim polymethyl methacrylate (PMMA luv luv) thiab polyvinyl chloride impact modifiers (xws li ACR, MBS). Nws kuj tseem siv tau rau hauv cov txheej, cov nplaum, cov ntawv luam ntawv thiab cov khoom siv zas xim thiab lwm yam teb. Nws muaj ntau yam kev siv.

Cov txheej txheem tseem ceeb ntawm MMA
Muaj ntau txoj kev tsim cov tshuaj MMA, suav nrog acetone cyanohydrin txoj kev (ACH txoj kev), isobutylene / tert-butanol oxidation txoj kev (C4 txoj kev), ethylene txoj kev (C2 txoj kev), methanol-methyl acetate txoj kev (C1 txoj kev), thiab lwm yam, raws li lawv cov khoom siv raw carbon tus lej sib txawv thiab tuaj yeem faib ua C1 txoj kev, C2 txoj kev, C3 txoj kev thiab C4 txoj kev.
Los ntawm lub zeem muag thoob ntiaj teb, cov txheej txheem tsim khoom siv feem ntau yog ACH txoj kev. Cov txheej txheem thev naus laus zis no yog qhov paub tab, ruaj khov thiab yooj yim, suav txog li 61.6% ntawm lub ntiaj teb cov khoom tsim tawm, feem ntau yog nyob rau hauv North America, Western Europe, thiab Tuam Tshoj; ua raws li C4 txoj kev, tsim los ntawm Nyiv Shokubai Chemical Tsim los ntawm Industrial Corporation thiab Mitsubishi Rayon Company hauv xyoo 1982, cov thev naus laus zis yog qib siab, cov khoom siv raw tsis muaj tshuaj lom thiab tsis muaj teeb meem, muaj ob peb yam khoom seem thiab tus nqi qis, suav txog li 30.5% ntawm lub ntiaj teb cov khoom tsim tawm.

Cov Khoom Siv Tshuaj

Kua tsis muaj xim, yooj yim volatile. Yaj nyob rau hauv ntau yam organic solvents xws li ethanol, ether, acetone, thiab lwm yam. Yaj me ntsis nyob rau hauv ethylene glycol thiab dej.

Kev Siv:

Feem ntau siv ua monomer ntawm cov iav organic, thiab kuj siv los ua lwm yam yas, txheej, thiab lwm yam.

xwm

CAS No. 80-62-6

Cov mis molecular C5H8O2

Qhov hnyav molecular 100.12

EINECS No. 201-297-

Melting point -48 ° C (lit.)

Kub taw tes 100 ° C (lit.)

Qhov Ceev 0.936g/mL ntawm 25°C (lit.)

Qhov ceev ntawm cov pa roj 3.5 (vsair)

Qhov siab ntawm cov pa dej 29mmHg (20°C)

Qhov kub hnyiab 50°F

Cov xwm txheej cia khoom 2-8 ° C Kev yaj 15g / l Daim ntawv Crystalline hmoov lossis siv lead ua

Cov Ntaub Ntawv Tiv Tauj

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