【摘要】 以马来酸酐、α-C12~18烯烃和C12~18醇为主要原料,采用二元共聚和醇解,制备了马来酸酐和α-烯烃二元共聚物及其酯化物。将其作为生物柴油降凝剂,用于改善生物柴油低温流动性。通过对棕榈油生物柴油分别混入无水乙醇或0#柴油前后,加入自制降凝剂后凝点的评价,以及加入降凝剂对大豆油生物柴油凝点的考察,验证了自制降凝剂的降凝效果。结果表明,棕榈油生物柴油中分别混入40%无水乙醇和80%0#柴油,并添加质量分数3%自制降凝剂时,混合油品凝点分别降低8和25℃;大豆油生物柴油中添加0.5%自制降凝剂时,凝点降低15℃。更多还原

【Abstract】 The maleic anhydride-α-olefin copolymers and their esters were prepared from maleic anhydride,α-C12-18 olefins and C12-18 alcohols by binary polymerization and alcoholysis.The copolymers and their esters were employed as pour point depressant to improve the low-temperature fluidity of biodiesel.The effects of prepared pour point depressants on the pour point of palm oil biodiesel,before and after diluted by anhydrous ethanol and 0# diesel,were evaluated.In addition,the pour point depression effects of prepared pour point depressants were verified when applied to reduce the pour point of soybean oil biodiesel.The results indicated that: when the mass fraction of anhydrous ethanol and 0# diesel in palm oil biodiesel was 40 % and 80 %,adding 3 % prepared pour point depressants,the pour point reduced by 8 ℃and 25 ℃,respectively;by adding of 0.5 % prepared pour point depressants into soybean oil biodiesel,the pour point reduced by 15 ℃.更多还原