CAJ | 학술논문

以乌桕梓油生物柴油为对象,研究了不饱和脂肪酸甲酯二聚体的制备及聚酰胺树脂的合成.结果表明,二聚体合成最优工艺条件为:催化剂膨润土加入量12%(质量分数),催化助剂LiCl 0.8%(质量分数),反应温度220℃,反应时间6 h.在此条件下,二聚体收率为75.2%.以上述所得二聚体进一步制备聚酰胺树脂,并将其应用于环氧树脂固化体系中,对聚酰胺树脂固化物产品进行DSC、耐热性和力学性能测试.结果表明,当聚酰胺与环氧树脂固化体系质量比为0.6∶1时,固化反应最完全,固化物产品的耐热性能最高,抗冲击、弯曲及剪切性能最强,其性能与市售同类产品相当.
이오구재유생물시유위대상,연구료불포화지방산갑지이취체적제비급취선알수지적합성.결과표명,이취체합성최우공예조건위:최화제팽윤토가입량12%(질량분수),최화조제LiCl 0.8%(질량분수),반응온도220℃,반응시간6 h.재차조건하,이취체수솔위75.2%.이상술소득이취체진일보제비취선알수지,병장기응용우배양수지고화체계중,대취선알수지고화물산품진행DSC、내열성화역학성능측시.결과표명,당취선알여배양수지고화체계질량비위0.6∶1시,고화반응최완전,고화물산품적내열성능최고,항충격、만곡급전절성능최강,기성능여시수동류산품상당.
The preparation of dimeric fatty acid methyl esters and their polyamides from Chinese kernel oil hiodiesel has been investigated. The results showed that the optimum conditions for dimeric fatty acid methyl ester synthesis were: amount of bentonite catalyst 12% (based on the weight of fatty acid methyl esters), catalytic additives LiCI 0.8% (based on the weight of fatty acid methyl esters), reaction temperature 220 ℃, reaction time 6 h. Under these conditions, the yield of dimerie fatty acid methyl esters was 75.2%. The preparation of polyamides from the dimefic fatty acid methyl esters and their application in epoxy resin curing systems were further studied. By means of DSC, and experimental measurements of heat resistance and mechanical properties of the cured product, it was found that the highest heat resistance and impact resistance, and strongest bending and shear properties, were ob-tained when the mass ratio of polyamide resin and epoxy resin curing system was 0.6:1. It was concluded that the performance of polyamides from Chinese kernel oil biodiesel is comparable to similar products available commercial-ly.