CAJ | 학술논문

以环己酮和异丁醛为原料、甲醇钠为催化剂合成环己酮-异丁醛树脂,考察了原料摩尔比、催化剂用量、反应时间等对合成树脂羟基值、运动粘度及产率的影响.并用FT-IR和1 H-NMR对树脂结构进行了表征.研究结果表明,在异丁醛、环己酮摩尔比为1.3、催化剂用量为6.0%、反应时间为9h时,合成得到的树脂羟基值为43.60mg KOH/g,运动粘度为7.78mm2/s,产率为52.3%,且树脂在非极性溶剂中的溶解性能和其抗热黄变性能均优于环己酮-甲醛树脂;FT-IR和1 H-NMR结果表明,环己酮的α-H与异丁醛发生了缩合反应.
이배기동화이정철위원료、갑순납위최화제합성배기동-이정철수지,고찰료원료마이비、최화제용량、반응시간등대합성수지간기치、운동점도급산솔적영향.병용FT-IR화1 H-NMR대수지결구진행료표정.연구결과표명,재이정철、배기동마이비위1.3、최화제용량위6.0%、반응시간위9h시,합성득도적수지간기치위43.60mg KOH/g,운동점도위7.78mm2/s,산솔위52.3%,차수지재비겁성용제중적용해성능화기항열황변성능균우우배기동-갑철수지;FT-IR화1 H-NMR결과표명,배기동적α-H여이정철발생료축합반응.
Cyclohexanone-isobutyraldehyde resin was synthesized by condensation of cyclohexanone and isobutyraldehyde with sodium methylate as catalyst.The effect of molar ratio of materials,the amount of catalyst and reaction time on hydroxyl value,kinematic viscosity and yield of cyclohexanone-isobutyraldehyde resin was studied.FT-IR and 1H-NMR were used to characterize the structure of the resin.It was found that cyclohexanone-isobutyraldehyde resin with hydroxyl value of 43.60 mg KOH/g,kinematic viscosity of 7.78 mm2/s and yield of 52.3% was prepared when the molar ratio of isobutyraldehyde and cyclohexanone was 1.3,the amount of catalyst was 6.0 wt % and reaction time was 9 h,it exhibits better solubility in apolar solvents and yellowing-resistance than cyclohexanone-formaldehyde resin.The FT-IR and 1H-NMR results showed that the α-H of cyclohexanone reacted with isobutyraldehyde.