Zinthu Zofunika Kwambiri Zowongolera mu Kupanga kwa Bisphenol A
Ponena za kuyera kwa zinthu zopangira, phenol ndi acetone, monga zinthu zazikulu zopangira bisphenol A, zimafunika kuwongolera kwambiri kuyera kwawo. Kuyera kwa phenol sikuyenera kuchepera 99.5%, ndipo kuyera kwa acetone kuyenera kupitirira 99%. Zipangizo zopangira zoyera kwambiri zimatha kuchepetsa kusokoneza kwa zonyansa pa reaction ndikuwonetsetsa kuti reaction ikuyenda bwino.
Kulamulira kutentha kwa reaction ndikofunikira kwambiri. Kutentha kwa condensation reaction nthawi zambiri kumakhala pakati pa 40 - 60°C. Mkati mwa kutentha kumeneku, liwiro la reaction ndi kusankha kwa zinthu kumatha kufika pamlingo wabwino. Kutentha komwe kuli kokwera kwambiri kapena kotsika kwambiri kumakhudza kukolola ndi khalidwe la bisphenol A BPA. Ntchito ndi kusankha kwa catalyst kumatsimikizira njira ya reaction. Ma catalyst a acidic omwe amagwiritsidwa ntchito kwambiri monga sulfuric acid amafunika kuyika bwino kuchuluka kwawo ndi mlingo wawo. Nthawi zambiri, kuchuluka kwa sulfuric acid kumasinthasintha mkati mwa mtundu wina, ndipo mlingo ndi gawo lenileni la kuchuluka kwa zinthu zopangira, kuti zitsimikizire kuti catalyst ikugwira ntchito bwino kwambiri. Kupanikizika kwa reaction kumakhudzanso kupanga kwa bisphenol A BPA. Kupanikizika koyenera ndi 0.5 - 1.5 MPa. Malo okhazikika a kuthamanga amathandiza kusunga kukhazikika kwa reaction system ndikulimbikitsa kusamutsa kwa misa ndi kupita patsogolo kwa reaction. Chiŵerengero cha zinthu chimagwirizana mwachindunji ndi magwiridwe antchito a reaction. Chiŵerengero cha molar cha phenol ndi acetone nthawi zambiri chimayendetsedwa pa 2.5 - 3.5:1. Chiŵerengero choyenera chingapangitse kuti zipangizozo zigwire bwino ntchito, kuwonjezera phindu la bisphenol A BPA, ndikuchepetsa zinthu zina.

Kusintha kwa Bisphenol A BPA kumawonjezera mphamvu ya makina, kukana kukanda ndi kuwonongeka, komanso kumakhala kokonzeka kuthana ndi mavuto ovuta.

Ngati mukufuna kugula mankhwala odalirika, chonde yang'anani Shandong Pulisi Chemical Co., Ltd., yomwe imayang'ana kwambiri pa "mankhwala abwino" ndipo yakhala ikugwira ntchito kwa zaka 20.