Phenol & Acetone Condensation rau BPA Production ua li cas?

Phenol thiab acetone raug kev sib xyaw ua ke hauv qab cov tshuaj tiv thaiv acidic los tsim Bisphenol A BPA. Qhov kev sib xyaw ua ke tseem ceeb tsis nyuaj, thiab cov xwm txheej sib xyaw ua ke tsis hnyav heev. Nws feem ntau tuaj yeem ua tiav zoo ntawm qhov siab ib txwm thiab 60 - 90 ° C. Cov txheej txheem tsim khoom ntawm BPA tsis ntev, feem ntau muaj plaub ntu: kev sib xyaw ua ke, kev sib xyaw ua ke, kev tshem tawm phenol thiab kev ntxuav, thiab kev rov qab los ntawm cov kua txiv hmab. Txawm li cas los xij, polycarbonate - qib BPA muaj cov kev xav tau zoo heev, xav tau kev ntshiab ntau dua 99.5%, feem pua ​​​​​​ntawm phenol tsawg dua 5 × 10⁻⁵, xim APHA tsawg dua 20, thiab kev txwv ntawm qhov khov, tshauv, hlau ions, thiab lwm yam. Txij li thaum Bisphenol A BPA yog cov khoom kub thiab rhiab heev nrog lub ntsiab lus kub heev (360.5 ° C), cov yam ntxwv no coj ntau yam teeb meem kev tsim khoom siv tshuaj lom neeg rau kev tsim cov khoom zoo Bisphenol A BPA.