Synthesis Of The Hydrogenated Bisphenol A Epoxy Resin And Properties Of Curing Hydrogenated Bisphenol A Epoxy Resin Modifiedwith Clay

Hydrogenated bisphenol A epoxy resin which is different from bisphenol A epoxy resin is converting the structure of benzene ring to aliphatic hydrocarbon a saturated six-membered structure. It has applications in weather resistance, aging resistance, better ultraviolet resistance and is suitable for specific domains, such as high light transmittance and outdoor using. But also the lack of the rigid structure of the benzene ring leading to the mechanical properties of the cured composition is poor, which limits its use. So this paper focuses on the Synthesis of the Hydrogenated Bisphenol A Epoxy Resin and Properties of Curing Hydrogenated Bisphenol A Epoxy Resin modified with clay to expand the use of the specific epoxy resin--hydrogenated bisphenol A epoxy resin.This thesis studied catalytic synthesis of hydrogenated bisphenol A epoxy resin using hydrogenated bisphenol A and epichlorohydrin, the mixed catalyst quaternary and potassium hydroxide determined through experiments. Optimum reaction conditions are hydrogenated bisphenol A and epichlorohydrin molar ratio of 1:3, etherification temperature 70℃, cyclization temperature 70℃, cyclization time 7h. The molar ratio of the amount of the quaternary ammonium salt of hydrogenated bisphenol A is (1:0.04), primary etherification catalyst is potassium hydroxide with a molar ratio of 1:0.3, the cyclization catalyst is potassium hydroxide aqueous solution, the concentration is 30% of water, the total amount of potassium hydroxide is twice the number of moles of hydrogenated bisphenol A. Homemade hydrogenated bisphenol A epoxy resin’s appearance, color, epoxy value, chlorine content and other basic performance data are similar to foreign products closely. Characterized by IR and NMR analysis the structure of the synthesized products shows as hydrogenated bisphenol A epoxy resin. UV absorption describes that hydrogenated bisphenol A epoxy resin has excellent UV resistance.This paper also studies clay modifies the curing of hydrogenated bisphenol A epoxy resin, designing reasonable experimental methods to dope different mass fraction (2.5%,5%,7.5%,10%) of the modified montmorillonite (DK-1) with epoxy resin. Selected hexahydrophthalic anhydride, glutaric acid anhydride hardener mixture (1:1) and tetramethyl ammonium chloride as the curing accelerator, hydrogenated bisphenol A epoxy resin curing condition is 100 ℃/2h,150 ℃/4h. Bisphenol A epoxy resin curing condition is 100 ℃/2h,150 ℃/4h.We find that hydrogenated bisphenol A epoxy resin has better compatibility with DK-1, while doped montmorillonite content increases, the transparency of the cured product decreases. Bisphenol A epoxy resin has better thermal stability, with less than 7.5% modified Montmorillonite of cured epoxy resin, both epoxy resins’ thermal nature are stable relatively. Doped with 5% of DK-1 the tensile modulus of hydrogenated bisphenol A epoxy resin cured product increase 317%.The paper has innovative invention of hydrogenated bisphenol A epoxy resin, and studies the clay/hydrogenated bisphenol A type epoxy resin composites and finds that doping of about 5 wt% clay helps to improve mechanics performance, expanding the using of this hydrogenated bisphenol A epoxy resin.