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采用静电纺丝技术,以聚偏氟乙烯(PVDF)为原料,掺杂不同质量纳米二氧化硅(SiO2),制备PVDF/SiO2复合纳米纤维膜,研究分析复合纳米纤维膜的形貌、化学结构、晶型转变、拉伸性能和压电性能。结果表明:当PVDF质量分数为10%时,纤维平均直径为(473.97±71.10)nm,纤网成膜良好,微观形貌清晰,PVDF/SiO2复合纳米纤维膜的直径范围为514.96～834.16 nm,且纤维表面有颗粒状凸起;PVDF/SiO2复合纳米纤维膜的拉伸强力随纳米SiO2质量分数增大呈先增大后减小趋势,当纳米SiO2质量分数为0.3%时,强力为(7.94±0.68)N;静电纺丝的电场作用使PVDF由α晶型转变为β晶型,具备压电性能,输出电压值随纳米SiO2质量分数增大先上升后下降,当纳米SiO2质量分数为0.3%时输出电压值最大,可达(2.00±0.11)V。
Abstract：PVDF/SiO2 composite nanofiber membrane is prepared by electrospinning technology using polyvinylidene fluoride(PVDF) as raw material and doped with different mass of nano silica(SiO2). The morphology, chemistry, crystal form transformation, tensile properties and piezoelectric properties of the composite nanofiber membranes are analyzed separately. The results show that when the PVDF mass fraction is 10%, the average fiber diameter is(473.97±71.10) nm. The film formation is good and the micromorphology is clear. The diameter of the PVDF/SiO2 composite nanofiber membrane ranges from 514.96 to 834.16 nm, and the fiber surface has granular protrusions. The tensile strength of PVDF/SiO2 composite nanofiber membrane increases firstly and then decreases with the increase of nano SiO2 mass fraction. When the mass fraction of nano SiO2 is 0.3%, the strength reaches(7.94±0.68) N. The electric field effect of electrospinning changes the PVDF from α crystal form to β crystal form, producing good piezoelectric properties. The output voltage value increases firstly and then decreases with the increase of nano SiO2 mass fraction. When the nano SiO2 mass fraction is 0.3%, the output voltage reaches the peak value of(2.00±0.11) V.
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基本信息:
DOI：
中图分类号:TQ340.64;TB332
引用信息:
[1]吴倩倩,李珂,杨立双等.PVDF/SiO_2复合纳米纤维膜的制备及性能研究[J],2019,18(04):83-88.
基金信息:
江苏省自然科学基金项目(BK20190927);; 江苏省博士后日常资助项目(2019Z104);; 南通大学大学生创新训练计划项目(2019111)