PMMVA润滑油降凝剂的合成及其降凝效果  

Synthesis and effect of a new pour point depressant of PMMVA for lubricating oil

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作  者:龙小柱[1] 王肖肖[1] 张爽[1] 王闯[1] 唐磊[1] 

机构地区:[1]沈阳化工大学化学工程学院,辽宁沈阳110142

出  处:《化工科技》2013年第1期16-19,32,共5页Science & Technology in Chemical Industry

基  金:辽宁省教育厅高等学校科学研究项目(2009A591)

摘  要:用混合高碳醇、十八胺分别与马来酸酐反应得到醇解产物和胺解产物,再以2种产物以及醋酸乙烯酯为单体,三元共聚得到目标产物:马来酸混合醇酯-马来酸十八酰胺-醋酸乙烯酯共聚物(PM-MVA)。正交实验确定了缩合反应中醇解反应的最优工艺条件:n(马来酸酐)∶n(混合醇)=1∶1、m(催化剂)∶m(反应物)=2.0%、m(溶剂)∶m(反应物)=40%。胺解反应以反应物n(马来酸酐)∶n(十八胺)=1∶2进行。正交实验确定最佳的聚合工艺条件:n(缩合产物)∶n(醋酸乙烯酯)=1∶1.5、m(引发剂)∶m(聚合单体)=1.5%、m(溶剂)∶m(聚合单体)=30%、聚合温度75℃、聚合时间4h。IR结果表明:所制备产物的官能团结构与设计的目标产物相符。将最佳条件下合成的产物以w(降凝剂润滑油)=0.85%加入到150SN润滑油基础油中,凝点可降低17℃。A new copolymer,maleic ester-maleic tion point(SP)of lubricating oil was synthesized amide-vinyl acetate(PMMVA)for reducing solidifica at low temperature. The raw materials are maleic an hydride,mixed higher alcohols, octadecyl amine and vinyl acetate. The synthetic method is first con- densation and then polymerization. Condensation products were prepared through alcoholysis and aminolysis. In polymerization process, pour point depressant (PPD)copolymer was obtained. Through or-thogonal experiment, the optimal procedure has determined. Condensation procedure is: n (maleic an- hydride) :n(mixed alcohols) = 1 : 1 ,m(catalyst) : m(reactants) = 2.0% ,m(solvent) : rn(reactants) = 40%, n(maleic anhydride) : n (octadecyl amine) = 1 : 2. Polymerization procedure is: n (condensation products) : n(vinyl acetate) = 1 : 1.5,re(initiator) : m(polymeric monomer) = 1.5%,rn(solvent) : m(polymeric monomer) = 30 G, polymerization temperature= 75℃, polymerization time = 4 h. The infrared analysis showed that the molecular functional group of the preparation product matches with the designing target product. SP of lubricating oil is lowered by 17℃ when the dosage of PPD is w(lu- bricating oil with PPD)=0. 85G additive dosage.

关 键 词:马来酸酐 混合高碳醇 十八胺 缩合 聚合 降凝剂 润滑油基础油 

分 类 号:TQ314.269[化学工程—高聚物工业]

 

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