Zithini iingenelo ze-bisphenol A epoxy resin?
I-Bisphenol A BPA epoxy resin lolona hlobo lwe-epoxy resin oluveliswa kakhulu nolusetyenziswa kakhulu. Ibonisa ukucaca okuphezulu kwaye yenziwe nge-bisphenol A BPA kunye ne-epichlorohydrin xa kukho i-sodium hydroxide. Iqondo le-polymerization, elibizwa ngokuba yi-"n", lidla ngokuba phakathi kwe-0 ukuya kwi-25. Ngokusekelwe kubunzima be-molecular, ii-epoxy resin zinokuhlulwahlulwa ngokwamanqanaba ahlukeneyo. Ngokubanzi, ii-epoxy resin ezinobunzima obuphantsi be-molecular zinexabiso eliphakathi le-"n" elingaphantsi kwe-2 kunye nenqanaba lokuthamba elingaphantsi kwe-50°C, kwaye zibizwa ngokuba zii-soft epoxy resin. Ii-medium molecular weight resin zinexabiso le-"n" eliphakathi kwe-2 kunye ne-5, kunye nenqanaba lokuthamba eliphakathi kwe-50°C ukuya kwi-95°C. Ii-resin ezinexabiso le-"n" elingaphezulu kwe-5 (inqanaba lokuthamba elingaphezulu kwe-100°C) zihlelwa njengee-high molecular weight resin.