PTFE/玻纤多泡孔涂层高温复合滤材的制备
|
摘要
采用发泡涂层工艺制备聚四氟乙烯(PTFE)/玻纤多泡孔涂层高温复合滤材。在室温及90℃条件下测试不同增稠剂配方发泡液的黏度与泡沫稳定性,确定最佳增稠剂为热增稠型聚丙烯酰胺,通过多因子正交试验及透气性、过滤效率、表观形貌、孔径等测试,分析了功能性助剂对发泡涂层结构的影响规律,并将最优样品与国外样品及基布进行性能比较。结果表明:月桂酸钾皂的质量分数为滤材透气及过滤性能最大影响因素;最优样品透气量为34.4 mm/s,为基布透气量的2 6%,过滤效率为8 6%,为基布滤效的8.4倍,且最优样品性能与国外样品相当。
High temperature resistant porous polytetrafluoroethylene(PTFE)/glass fiber composite filter was prepared by foam coating process. The viscosity and foam stability of foaming liquids within different thickeners were tested at room temperature and 90 ℃. The results show that polyacrylamide within thermo-thickening has the best foaming effect. The influences of functional additives on coating structure were analyzed through the air permeability, filtration efficiency, surface morphology, pore size experiments and multi-factor orthogonal test. The performances of optimal samples were compared with external samples and basic fabric. The results show that the mass fraction of lauric acid potassium soap is the key impact factor in influencing filter's permeability and filtering performance. The air permeability of the optimal sample is 34.4 mm/s( 26% of the basic fabric's) and the filtration efficiency is 86%(8.4 times of the basic fabric's), which are equivalent to the properties of external samples.
High temperature resistant porous polytetrafluoroethylene(PTFE)/glass fiber composite filter was prepared by foam coating process. The viscosity and foam stability of foaming liquids within different thickeners were tested at room temperature and 90 ℃. The results show that polyacrylamide within thermo-thickening has the best foaming effect. The influences of functional additives on coating structure were analyzed through the air permeability, filtration efficiency, surface morphology, pore size experiments and multi-factor orthogonal test. The performances of optimal samples were compared with external samples and basic fabric. The results show that the mass fraction of lauric acid potassium soap is the key impact factor in influencing filter's permeability and filtering performance. The air permeability of the optimal sample is 34.4 mm/s( 26% of the basic fabric's) and the filtration efficiency is 86%(8.4 times of the basic fabric's), which are equivalent to the properties of external samples.
引文
[1]朱博,宋秦杰,刘建立,等.发泡参数对上浆泡沫性能的影响[J].棉纺织技术,2017,45(8):28-31.
[2]林茂泉.PTFE复合滤料高温热压覆膜工艺研究[D].上海:东华大学纺织学院,2017.
[3]洪迪昆,刘亮,郭欣.温度对聚丙烯酰胺稀溶液黏度影响的分子动力学模拟[J].中国电机工程学报,2015,35(23):6099-6104.
[4]陈洋,张行荣,尚衍波,等.起泡剂性能测试方法及影响泡沫稳定性的因素[J].中国矿业,2014,23(S2):230-234.
[5]贾寒.表面活性剂辅助制备金纳米材料[D].济南:山东大学化学与化工学院,2013.
[6]PARK B H,LEE,KIM S B,etal.Preparation and characterization of porous composite filter medium by polytetrafluoroethylene foam coating[J].Journal of the Air and Waste Management Association,2010,60(2):137-141.
[7]高诚贤,葛会宪.泡沫涂层工艺制备功能性窗帘面料[J].印染,2010,36(4):36-38.
[8]韩雅岚,崔运花.高温烟气过滤材料的发展[J].纺织科技进展,2012(2):22-23.
[9]王璐,于斌,祝成炎,等.耐高温空气过滤材料的发展现状[J].产业用纺织品,2010,28(3):1-5.
[10]KIM J U,PARK B H,LEE M H.Critical parameters to determine mean bubble size of generated foams from a foam generator[J].Journal of Applied Polymer Science,2013,130(3):2062-2067.
[11]陈亏,高晶,俞建勇,等.玻璃纤维/PTFE高温热压覆膜滤料的发展现状[J].产业用纺织品,2010,28(2):1-5.
[12]朱利,李红涛,杨兆亮,等.耐高温聚合物稳泡剂的合成及稳泡效果研究[J].新疆石油天然气,2017,13(3):25-28.
[13]孙铠,许海育,江亦李.泡沫整理发泡原液的组成及其泡沫稳定性的探讨[J].华东纺织工学院学报,1982(3):63-74.
[2]林茂泉.PTFE复合滤料高温热压覆膜工艺研究[D].上海:东华大学纺织学院,2017.
[3]洪迪昆,刘亮,郭欣.温度对聚丙烯酰胺稀溶液黏度影响的分子动力学模拟[J].中国电机工程学报,2015,35(23):6099-6104.
[4]陈洋,张行荣,尚衍波,等.起泡剂性能测试方法及影响泡沫稳定性的因素[J].中国矿业,2014,23(S2):230-234.
[5]贾寒.表面活性剂辅助制备金纳米材料[D].济南:山东大学化学与化工学院,2013.
[6]PARK B H,LEE,KIM S B,etal.Preparation and characterization of porous composite filter medium by polytetrafluoroethylene foam coating[J].Journal of the Air and Waste Management Association,2010,60(2):137-141.
[7]高诚贤,葛会宪.泡沫涂层工艺制备功能性窗帘面料[J].印染,2010,36(4):36-38.
[8]韩雅岚,崔运花.高温烟气过滤材料的发展[J].纺织科技进展,2012(2):22-23.
[9]王璐,于斌,祝成炎,等.耐高温空气过滤材料的发展现状[J].产业用纺织品,2010,28(3):1-5.
[10]KIM J U,PARK B H,LEE M H.Critical parameters to determine mean bubble size of generated foams from a foam generator[J].Journal of Applied Polymer Science,2013,130(3):2062-2067.
[11]陈亏,高晶,俞建勇,等.玻璃纤维/PTFE高温热压覆膜滤料的发展现状[J].产业用纺织品,2010,28(2):1-5.
[12]朱利,李红涛,杨兆亮,等.耐高温聚合物稳泡剂的合成及稳泡效果研究[J].新疆石油天然气,2017,13(3):25-28.
[13]孙铠,许海育,江亦李.泡沫整理发泡原液的组成及其泡沫稳定性的探讨[J].华东纺织工学院学报,1982(3):63-74.