發(fā)布時(shí)間：2018-04-10 17:16

  本文選題：D-A反應(yīng) + 凝膠色譜��； 參考：《化工進(jìn)展》2017年01期

【摘要】：選用具有高共軛脂肪酸含量的桐油與馬來酸二異辛酯作為二烯體與親二烯體,研究了合成C_22-三元酸一甲二辛酯增塑劑的工藝并探討了酮油甲酯與馬來酸二異辛酯D-A反應(yīng)轉(zhuǎn)化率的計(jì)算問題。通過對(duì)比分析得率、凝膠色譜、紫外3種測(cè)試方法,結(jié)果表明得率、凝膠色譜、紫外都可作為檢測(cè)手段評(píng)估D-A反應(yīng)的進(jìn)行程度。其中得率誤差較大,凝膠色譜計(jì)算轉(zhuǎn)化率較為準(zhǔn)確,紫外可利用270nm處的吸收判斷反應(yīng)程度,可是計(jì)算結(jié)果偏大,但可利用各波段吸收特征有效判斷反應(yīng)類型;綜合分析凝膠色譜與紫外的結(jié)果得出桐油甲酯與馬來酸二異辛酯的D-A反應(yīng)最佳合成條件為桐油甲酯與馬來酸二異辛酯在摩爾比為1∶1時(shí),在220℃下反應(yīng)5h,轉(zhuǎn)化率為97.4%。
[Abstract]:Tung oil and diisooctyl maleate with high conjugated fatty acid content were selected as dienes and dienophiles.The synthesis process of C22- trimethylidene dioctyl ester plasticizer and the calculation of the conversion of methyl ketone oil with diisooctyl maleate D-A were studied.The results showed that yield, gel chromatography and UV could be used as detection methods to evaluate the degree of D-A reaction.Among them, the error of yield is large, the conversion rate calculated by gel chromatography is more accurate, the degree of reaction can be judged by UV absorption at 270nm, but the calculation result is on the high side, but it can be used to judge the reaction type effectively by using the absorption characteristics of each band.The synthetic conditions of D-A reaction of tung oil methyl ester with diisooctyl maleate were obtained by comprehensive analysis of gel chromatography and UV. The optimum conditions were as follows: when the molar ratio of tung oil methyl ester and diisooctyl maleate was 1:1, at 220 鈩，

本文編號(hào)：1732150