使用高效液相色谱仪对腰果双酚醚化闭环后制备出产品进行定性定量分析。使用液相色谱仪在25℃温度下，以甲醇为流动相测n(NaOH)/n(腰果酚)=1.3:1，100℃醚化、75℃减压闭环的环氧化后的腰果双酚的液相色谱图。使用甲醇稀释样品至780倍，测其液相色谱图，确定环氧化腰果酚闭环程度。

Qualitative and quantitative analysis of the product prepared by etherification of cashew bisphenol using high-performance liquid chromatography. The liquid chromatography of cashew bisphenol after n (NaOH)/n (cashew phenol)=1.3:1100 ℃ etherification and 75 ℃ vacuum closed loop epoxidation was measured using a liquid chromatograph at 25 ℃ using methanol as the mobile phase. Dilute the sample with methanol to 780 times, measure its liquid chromatography, and determine the degree of closed-loop of epoxidized cashew phenols.