He aha nā pōmaikaʻi o ka bisphenol A epoxy resin?
ʻO ka Bisphenol A BPA epoxy resin ka ʻano resin epoxy i hana nui ʻia a hoʻohana nui ʻia. Hōʻike ia i ka transparency kiʻekiʻe a ua synthesized ʻia mai bisphenol A BPA a me epichlorohydrin i ke alo o ka sodium hydroxide. ʻO ke kekelē o ka polymerization, i hōʻike ʻia ʻo "n", maʻamau mai 0 a 25. Ma muli o ke kaumaha molekala, hiki ke hoʻokaʻawale ʻia nā resin epoxy i nā papa like ʻole. Ma ke ʻano laulā, ʻo nā resin epoxy kaumaha molekala haʻahaʻa he awelika "n" ma lalo o 2 a me kahi kiko palupalu ma lalo o 50°C, a ua kapa ʻia ʻo ia he mau resin epoxy palupalu. Loaʻa i nā resins kaumaha molekala waena kahi waiwai "n" ma waena o 2 a me 5, me kahi kiko palupalu mai 50°C a 95°C. ʻO nā resins me ka waiwai "n" ʻoi aku ma mua o 5 (kiko palupalu ma luna o 100°C) ua hoʻokaʻawale ʻia ʻo ia he mau resins kaumaha molekala kiʻekiʻe.