壳聚糖季铵盐/植酸多孔复合膜的制备及应用
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摘要
采用溶液共混法将植酸加入到壳聚糖季铵盐溶液中,然后冷冻干燥制备出多孔复合膜。通过红外光谱、扫描电镜、热重分析对复合膜进行表征和测试,并研究了该复合膜对变压器绝缘油中铜、铁、铝、锰4种金属杂质的吸附效果。结果表明:植酸的加入没有破坏壳聚糖季铵盐复合膜的多孔结构,该复合膜能有效吸附变压器绝缘油中的金属杂质。当植酸与壳聚糖季铵盐的质量比为0.4时,该多孔复合膜对变压器绝缘油中金属杂质的吸附效率达到最高。
Phytic acid(PA) was added to chitosan quaternary ammonium salt(CQAA) solution by solution blending method, and a porous composite film was prepared after freeze-drying. The composite film was characterized and tested by infrared spectroscopy, scanning electron microscopy, and thermogravimetry analysis. The adsorption efficiency of composite films on the metallic impurities of copper, iron, aluminum, and manganese in transformer oil was studied. The results show that the addition of phytic acid does not destroy the porous structure of composite films, and the composite film could adsorb the metal impurities in transformer oil effectively. When the mass ratio of phytic acid and chitosan quaternary ammonium salt is 0.4, the adsorption efficiency of the porous composite film on the metallic impurities reaches the highest value.
Phytic acid(PA) was added to chitosan quaternary ammonium salt(CQAA) solution by solution blending method, and a porous composite film was prepared after freeze-drying. The composite film was characterized and tested by infrared spectroscopy, scanning electron microscopy, and thermogravimetry analysis. The adsorption efficiency of composite films on the metallic impurities of copper, iron, aluminum, and manganese in transformer oil was studied. The results show that the addition of phytic acid does not destroy the porous structure of composite films, and the composite film could adsorb the metal impurities in transformer oil effectively. When the mass ratio of phytic acid and chitosan quaternary ammonium salt is 0.4, the adsorption efficiency of the porous composite film on the metallic impurities reaches the highest value.
引文
[1]汪红梅.电力用油(气)[M].北京:化学工业出版社,2008:100-118.
[2]石景燕.变压器油中金属杂质的隐患及处理[J].变压器, 2006,43(5):44-46.
[3]钱艺华,何冰.变压器油中金属含量检测及危害性分析[J].江西电力,2006,30(4):4-6.
[4]张炜,梁俊斌,邓雨荣,等.变压器绝缘油中产气趋势突变的检测方法研究[J].绝缘材料,2015,48(10):72-76.
[5] MEHTA D M, KUNDU P, CHOWDHURY A, et al. A review on critical evaluation of natural ester vis-a-vis mineral oil insulating liquid for use in transformers:Part 1[J].IEEE Transactions on Dielectrics and Electrical Insulation,2016,23(2):873-880.
[6]万涛,周舟,冯兵,等.变压器油中腐蚀性硫与铜离子综合处理研究[J].绝缘材料,2016,49(2):70-74.
[7]张静,柯友胜,马霄,等.现代分析技术在变压器油性能测试中的应用[J].绝缘材料,2017,50(12):15-21.
[8]伍娟娟.杂质铜对变压器油性能的影响[D].湖南:长沙理工大学,2013.
[9]郑科旺,付梅芳,黄超凡,等.壳聚糖/淀粉/ZnO复合膜的制备与性能[J].包装工程,2017,38(13):90-95.
[10]刘广瑞.植酸-壳聚糖聚合物的制备及其重金属离子吸附性能研究[D].天津:天津工业大学,2016.
[2]石景燕.变压器油中金属杂质的隐患及处理[J].变压器, 2006,43(5):44-46.
[3]钱艺华,何冰.变压器油中金属含量检测及危害性分析[J].江西电力,2006,30(4):4-6.
[4]张炜,梁俊斌,邓雨荣,等.变压器绝缘油中产气趋势突变的检测方法研究[J].绝缘材料,2015,48(10):72-76.
[5] MEHTA D M, KUNDU P, CHOWDHURY A, et al. A review on critical evaluation of natural ester vis-a-vis mineral oil insulating liquid for use in transformers:Part 1[J].IEEE Transactions on Dielectrics and Electrical Insulation,2016,23(2):873-880.
[6]万涛,周舟,冯兵,等.变压器油中腐蚀性硫与铜离子综合处理研究[J].绝缘材料,2016,49(2):70-74.
[7]张静,柯友胜,马霄,等.现代分析技术在变压器油性能测试中的应用[J].绝缘材料,2017,50(12):15-21.
[8]伍娟娟.杂质铜对变压器油性能的影响[D].湖南:长沙理工大学,2013.
[9]郑科旺,付梅芳,黄超凡,等.壳聚糖/淀粉/ZnO复合膜的制备与性能[J].包装工程,2017,38(13):90-95.
[10]刘广瑞.植酸-壳聚糖聚合物的制备及其重金属离子吸附性能研究[D].天津:天津工业大学,2016.