Methacrylic acid (2-Methyl-2-propenoic acid)

Chemical chilengedwe

Methacrylic acid, yofupikitsidwa MAA, ndi organic pawiri.Madzi opanda mtundu, viscous awa ndi carboxylic acid wokhala ndi fungo losasangalatsa la acridi.Amasungunuka m'madzi ofunda ndipo amasakanikirana ndi zosungunulira zambiri za organic.Methacrylic acid amapangidwa m'mafakitale pamlingo waukulu ngati kalambulabwalo wa ma esters ake, makamaka methyl methacrylate (MMA) ndi poly(methyl methacrylate) (PMMA).Ma methacrylates ali ndi ntchito zambiri, makamaka popanga ma polima okhala ndi mayina amalonda monga Lucite ndi Plexiglas.MAA imapezeka mwachibadwa pang'onopang'ono mu mafuta a Roma chamomile.

Mapulogalamu

Methacrylic acid amagwiritsidwa ntchito popanga utomoni wa methacrylate ndi mapulasitiki.Amagwiritsidwa ntchito ngati Monomer kwa ma resins akuluakulu ndi ma polima, kaphatikizidwe ka organic.Ma polima ambiri amachokera ku esters ya asidi, monga methyl, butyl, kapena isobutyl esters.Methacrylic acid ndi methacrylate esters amagwiritsidwa ntchito pokonzekera ma polima osiyanasiyana [→ Polyacrylamides and Poly(Acrylic Acids), → Polymethacrylates].Poly(methyl methacrylate) ndiye polima wamkulu m'gululi, ndipo amapereka mapulasitiki osawoneka bwino, olimba omwe amagwiritsidwa ntchito ngati pepala popanga glazing, zizindikiro, zowonetsera, ndi mapanelo owunikira.

Zakuthupiform

Zomvekamadzi

Kalasi Yowopsa

8

Alumali moyo

Malinga ndi zomwe takumana nazo, mankhwalawa amatha kusungidwa kwa miyezi 12 kuyambira tsiku loperekedwa ngati asungidwa m'mitsuko yotsekedwa mwamphamvu, yotetezedwa ku kuwala ndi kutentha ndikusungidwa kutentha kwapakati pa 5 - 30 ° C.

Typical katundu

Malo osungunuka

12-16 °C (kuyatsa)

Malo otentha

163 °C (kuyatsa)

kachulukidwe

1.015 g/mL pa 25 °C (kuyatsa)

kachulukidwe ka nthunzi

> 3 (vs mpweya)

kuthamanga kwa nthunzi

1 mm Hg (20 °C)

refractive index

n20/D 1.431(lit.)

Fp

170 ° F

nthawi yosungirako.

Sungani kutentha kwa +15 ° C mpaka +25 ° C.