Nyob rau hauv rooj plaub ntawm bakelite phenol thiab formaldehyde condense los tsim cov monomer muab H2O raws li cov khoom lag luam. Bakelite tseem hu ua co-polymer. Cov tshuaj tiv thaiv: Phenol reacts nrog formaldehyde los tsim o-Hydroxy methyl phenol.
Dab tsi yog cov khoom lag luam tsim thaum lub sijhawm npaj ntawm Bakelite polymer?
Bakelite yog dab tsi? Bakelite, uas tseem hu ua 'khoom siv ntawm ib txhiab siv' yog tshuaj hu ua polyoxybenzyl methylene glycol anhydride. Nws yog ib qho thermosetting phenol-formaldehyde resin tsim los ntawm condensation cov tshuaj tiv thaiv ntawm phenol nrog formaldehyde.
Bakelite yog dab tsi?
Ib qho nyuaj, infusible, thiab chemically resistant yas, Bakelite yog raws li ib tug tshuaj ua ke ntawm phenol thiab formaldehyde (phenol-formaldehyde resin), ob lub tebchaw uas tau muab los ntawm thee. tar thiab ntoo cawv (methanol), raws li lub sijhawm ntawd.
Leej twg tsim Bakelite?
Tus kws tshuaj ntsuam hauv Belgian yug thiab ua lag luam Leo Baekeland tau tsim Bakelite, thawj cov khoom siv hluavtaws ua ntej. Cov khoom muaj yeeb yuj ua los ntawm Bakelite-jewelry, xov tooj, xov tooj cua, thiab billiard balls, kom lub npe tsuas yog ob peb lub neej txhua hnub nyob rau hauv thawj ib nrab ntawm lub xyoo pua 20th.
Vim li cas peb thiaj tsis siv Bakelite?
Bakelite daim ntawv thov kev txuag tau raug txiav tawm hauv 1940s vim tias qee qhov tsis zoo uas sai sai nopom meej. Qhov tsis muaj cov ntaub ntawv thiab cov ntaub ntawv cuam tshuam txwv tsis pub muaj qhov kev xav ntawm qhov nws siv thiab nyob rau hauv lub koom haum twg.
