CAJ | 학술논문

结合大庆原油的物性特征,在降凝机理的指导下,以EVA与烷基马来酰亚胺接枝反应,合成了一类新型原油降凝剂.以目标物的降凝幅度为评价指标,优选出合适的合成条件:当EVA与十八烷基马来酰亚胺的物质的量的比为1∶20,引发剂过氧化二苯甲酰的量为2.5%,聚合时间为6 h,聚合温度为90 ℃时,聚合物的降凝效果最好,即目标物加量为100 mg/kg时凝点降低15 ℃.利用红外光谱仪对脂肪族胺、马来酸酐和十八烷基马来酰亚胺进行分析的结果表明:脂肪族胺与马来酸酐反应生成了十八烷基马来酰亚胺.利用核磁共振波谱仪对EVA及其接枝产物进行分析的结果表明:接枝反应确实存在,接枝率可以达到6.7%.
결합대경원유적물성특정,재강응궤리적지도하,이EVA여완기마래선아알접지반응,합성료일류신형원유강응제.이목표물적강응폭도위평개지표,우선출합괄적합성조건:당EVA여십팔완기마래선아알적물질적량적비위1∶20,인발제과양화이분갑선적량위2.5%,취합시간위6 h,취합온도위90 ℃시,취합물적강응효과최호,즉목표물가량위100 mg/kg시응점강저15 ℃.이용홍외광보의대지방족알、마래산항화십팔완기마래선아알진행분석적결과표명:지방족알여마래산항반응생성료십팔완기마래선아알.이용핵자공진파보의대EVA급기접지산물진행분석적결과표명:접지반응학실존재,접지솔가이체도6.7%.
On the basis of analyzing characteristics of Daqing crude oil and according to mechanism of PPD,the graft copolymer of EVA and octadecyl maleimide is synthesized.The graft copolymer has an optimal effect of pour point depressing for the Daqing crude oil when it is synthesized under the conditions that the mole ratio of EVA and octadecyl maleimide is 1∶ 20,mass fraction peroxidation benzoin formyl is 2.5%,polymerization time is 6 h,and the polymerization temperature is 90 ℃.When 100 mg/kg of the graft copolymer was added into Daqing crude oil,the pour point was reduced by 15 ℃.The infrared spectrograms of octadecylamine,maleic anhydride,octadecyl maleimide indicate that the reaction product of dodecylamine and maleic anhydride is dodecylmaleimide.The NMR spectral diagrams of EVA and its graft copolymers show that the reaction of EVA and dodecylmaleimide has taken place indeed,and the grafted percentage reaches to 6.7%.