PTFE乳液制备PTFE/ZrO_2微孔膜及性能研究  

Preparation of PTFE/ZrO_2 Composite Microporous Membrane by PTFE Resin Emulsion and Investigation on Performance

作　　者：满瑞[1] 邓新华[1] 孙元[1] 罗衍慧[1] 

机构地区：[1]天津工业大学材料科学与工程学院,天津300160

出　　处：《中国塑料》2011年第8期48-51,共4页China Plastics

摘　　要：尝试以聚四氟乙烯(PTFE)乳液为原料制备PTFE微孔膜,选定化学稳定性、热稳定性优异的纳米二氧化锆(ZrO2)作为增强剂以提高微孔膜强度,采用电子万能力学试验机测试了样品的力学强度,用单因素法讨论了纳米ZrO2含量、拉伸比例、热处理温度和热处理时间对微孔膜拉伸强度的影响;同时采用低温等离子体处理PTFE/ZrO2复合微孔膜以改善其表面亲水性。结果表明,PTFE/ZrO2复合微孔膜的拉伸强度与纳米ZrO2含量成正比,与拉伸倍数成反比;其拉伸强度随着热处理温度的升高或热处理时间的延长,呈先增大后减小的变化趋势,分别在310℃和10min时出现最大值;低温等离子体处理的最佳时间为30s。This paper used polytetrafluoroethylene （PTFE） emulsion as a matrix phase, micronanozirconium dioxide （ZrO2） powder as a reinforcer to prepare PTFE/ZrO2 composite membranes via mechanical stretch, and the tensile strength of the membranes was tested. Single-factor method was used to analyze the effect of ZrO2 powder content, draw ratio, heat-treatment temperature, and heat-treatment time on the tensile strength of the composite membrane. PTFE/ZrO2 membranes were post treated by low-temperature plasma to study the effect of the plasma treatment time and ZrO2 power on the hydrophility of the membranes. It showed that the tensile strength of PTFE/ZrOe composite membranes increased with increasing ZrO2 content, but decreased with increasing of draw ratio. When heat-treatment temperature was 310 ℃, heattreatment time was 10 min, the tensile strength gave rise to a maximum. The best post treated time of low-temperature plasma was 30 s.

关 键 词：聚四氟乙烯 纳米二氧化锆 微孔膜 低温等离子体 

分 类 号：TB383.2[一般工业技术—材料科学与工程]