CN114892282B - 一种拓扑结构压电纤维的制备方法及应用 - Google Patents
一种拓扑结构压电纤维的制备方法及应用 Download PDFInfo
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Abstract
本发明公开了一种拓扑结构压电纤维的制备方法及应用,该方法包括以下步骤:(1)3D打印导电基板:利用光固化3D打印技术打印边长为10cm的正方形,再在其表面打印出高2mm的拓扑结构,然后在上面磁控溅射导电金属,得导电基板;(2)拓扑结构纤维的制备:将导电基板作为静电纺丝的接收板进行静电纺丝。本发明的拓扑结构制备流程短、控制简单、成本低,利用3D打印技术的基板调控静电纺丝的电场,进而调控纤维的取向角度,与现有的纤维的应用对比,提供了一个更好提高性能的策略,可进一步扩大拓扑结构在众多产品,如电子传感,通讯产品等领域的广泛应用。
Description
技术领域
本发明属于功能材料技术领域,具体涉及一种拓扑结构压电纤维的制备方法及应用。
背景技术
压电材料被广泛的应用在电子设备、信息与传感等与人们生活密切相关的领域。传统的压电材料在机械波的监测方面应用广泛,但是其较差的压电响应限制了其应用范围,而为了提高材料在机械波领域的压电响应所采用的高压电系数的材料(如:PZT),因机械波的低压等特点大大降低了其性能。
近年来,随着大数据智能时代的发展与应用,压电声学因自供能,线性度好等特点而受到人们广泛关注。由于机械波自身在传播过程中压强小,为了灵敏的捕捉机械波,提高压电灵敏度,需要提高其压电响应。
目前的压电材料主要是为无机压电陶瓷(如PZT)、聚合物(如PVDF)。无机压电陶瓷因具有高的压电系数而被广泛关注,但是却受限于材料本身的刚性特点;PVDF在聚合物里具有操作工艺简单可控、成本低廉等特点,被广泛应用在各行各业中,但在机械波的监测中,PVDF薄膜的输出响应并不高,其压电系数最高约为30PC/N,静电纺丝因纤维的高比表面积、高纵横比等特点,以及高压极化使得纤维含有更多压电β相,使得更易提升性能。现有的静电纺丝薄膜制备仅限于无序及完全有序,而且在机械波的影响下压电输出依旧很低,并且使得机械波的响应频段窄。
发明内容
针对上述现有技术,本发明提供一种拓扑结构压电纤维的制备方法及应用,以提供一种利用静电纺丝的排列取向制造的响应频带宽、输出高、工艺简单、成本低的压电纤维。
为了达到上述目的,本发明所采用的技术方案是:提供一种拓扑结构压电纤维的制备方法,包括以下步骤:
(1)3D打印导电基板:利用光固化3D打印技术打印边长为10cm的正方形,再在其表面打印出高2mm的拓扑结构,然后在上面磁控溅射导电金属,得导电基板;
(2)拓扑结构纤维的制备:将导电基板作为静电纺丝的接收板进行静电纺丝。
本发明的制备首先使用3D打印导电图案基板,使其在静电纺丝的高压电场下产生不同强度的电场,进而使纤维在不同的电场下展现出不同的运动轨迹:拉伸和沉积,在间隙之间的弱电场进行拉伸,在图案上的强电场进行沉积,从而形成不同的拓扑结构。该拓扑结构的机电响应相对没有拓扑结构的纤维提高了约300%,频带宽度提高了约500%,充分展示了拓扑结构在机电转化中的优越性。
在上述技术方案的基础上,本发明还可以做如下改进。
进一步,拓扑结构为边长2mm的长方体、边长为2.67mm的三角体、半径为1.27mm的圆柱体或边长为4/3mm的六边体。
进一步,静电纺丝的纺丝溶液由以下步骤制得:将聚偏氟乙烯与N-N二甲基乙酰胺和丙酮按料液比1.84g:3.25ml:1.75ml混合后于60℃搅拌至完全溶解,其后静置冷却到室温。
进一步,静电纺丝的环境温度为20~30℃、湿度为40~50%、静电纺丝电压为14~18kv、纺丝距离为8~12cm、纺丝时间为2~4min。
进一步,静电纺丝的环境温度为25℃、湿度为45%、静电纺丝电压为16kv、纺丝距离为10cm、纺丝时间为3min。
本发明还提供了上述制备方法制得的拓扑结构压电纤维。
本发明还提供了上述拓扑结构压电纤维在制备压电器件中的应用。
进一步,将拓扑结构压电纤维于55~65℃退火1.5~2.5h,然后贴上亚克力板、镀上电极形成压电器件。
本发明的有益效果是:
(1)本发明的拓扑结构制备流程短、控制简单,利用3D打印技术的基板调控静电纺丝的电场,进而调控纤维的取向角度,与现有的纤维的应用对比,提供了一个更好提高性能的策略,可进一步扩大拓扑结构在众多产品,如电子传感,通讯产品等领域的广泛应用。
(2)本发明成本低,采用常用的聚偏氟乙烯作为原料,不存在污染问题。
(3)本发明调控纤维自身偶极子取向与宏观振幅,能够有效提升压电性能。
附图说明
图1为本发明的3D打印导电基板的拓扑结构;
图2为本发明的不同拓扑结构的压电纤维结构;
图3为基于本发明的拓扑结构的声音传感器;
图4为本发明的拓扑结构的声电性能对比。
具体实施方式
下面结合附图对本发明的具体实施方式做详细的说明。
实施例1
一种拓扑结构压电纤维的制备方法,包括以下步骤:
(1)3D打印导电基板:利用光固化3D打印技术打印边长为10cm的正方形,再在其表面打印出高2mm、边长2mm的长方体形拓扑结构,保证结构周长的统一,然后在上面磁控溅射6min导电金属Ag作为电极,得导电基板;
(2)纺丝溶液的制备:将聚偏氟乙烯与N-N二甲基乙酰胺和丙酮按料液比1.84g:3.25ml:1.75ml混合后于60℃搅拌至完全溶解,其后静置冷却到室温,得纺丝溶液;
(3)拓扑结构纤维的制备:将导电基板作为静电纺丝的接收板用纺丝溶液进行静电纺丝;其中,静电纺丝的环境温度为25℃、湿度为45%、静电纺丝电压为16kv、纺丝距离为10cm、纺丝时间为3min。
将上述拓扑结构压电纤维用于制作压电器件,包括以下步骤:将拓扑结构压电纤维于60℃退火2h,然后贴上亚克力板、镀上电极形成压电器件。
实施例2
一种拓扑结构压电纤维的制备方法,包括以下步骤:
(1)3D打印导电基板:利用光固化3D打印技术打印边长为10cm的正方形,再在其表面打印出高2mm、边长为2.67mm的三角体形拓扑结构,保证结构周长的统一,然后在上面磁控溅射6min导电金属Ag作为电极,得导电基板;
(2)纺丝溶液的制备:将聚偏氟乙烯与N-N二甲基乙酰胺和丙酮按料液比1.84g:3.25ml:1.75ml混合后于60℃搅拌至完全溶解,其后静置冷却到室温,得纺丝溶液;
(3)拓扑结构纤维的制备:将导电基板作为静电纺丝的接收板用纺丝溶液进行静电纺丝;其中,静电纺丝的环境温度为20℃、湿度为40%、静电纺丝电压为14kv、纺丝距离为8cm、纺丝时间为2min。
将上述拓扑结构压电纤维用于制作压电器件,包括以下步骤:将拓扑结构压电纤维于55℃退火2.5h,然后贴上亚克力板、镀上电极形成压电器件。
实施例3
一种拓扑结构压电纤维的制备方法,包括以下步骤:
(1)3D打印导电基板:利用光固化3D打印技术打印边长为10cm的正方形,再在其表面打印出高2mm、半径为1.27mm的圆柱体形拓扑结构,保证结构周长的统一,然后在上面磁控溅射6min导电金属Ag作为电极,得导电基板;
(2)纺丝溶液的制备:将聚偏氟乙烯与N-N二甲基乙酰胺和丙酮按料液比1.84g:3.25ml:1.75ml混合后于60℃搅拌至完全溶解,其后静置冷却到室温,得纺丝溶液;
(3)拓扑结构纤维的制备:将导电基板作为静电纺丝的接收板用纺丝溶液进行静电纺丝;其中,静电纺丝的环境温度为30℃、湿度为50%、静电纺丝电压为18kv、纺丝距离为12cm、纺丝时间为4min。
将上述拓扑结构压电纤维用于制作压电器件,包括以下步骤:将拓扑结构压电纤维于65℃退火1.5h,然后贴上亚克力板、镀上电极形成压电器件。
实验例
将本发明实施例1所得压电器件在声波的测试下,正方形拓扑结构相比随机纤维出能提高300%,频带宽度能提高478%。
将实施例1所得拓扑结构压电纤维用亚克力板进行固定,形成一个声波传感器,如图3;以机械波的声波为例,发现具有拓扑结构的纤维器件对声波的响应更加灵敏,并且在相同的试验条件下,响应频段和输出响应都大幅度增强,如图4所示。
虽然结合附图对本发明的具体实施方式进行了详细地描述,但不应理解为对本专利的保护范围的限定。在权利要求书所描述的范围内,本领域技术人员不经创造性劳动即可作出的各种修改和变形仍属本专利的保护范围。
Claims (5)
1.一种拓扑结构压电纤维的制备方法,其特征在于,包括以下步骤:
(1)3D打印导电基板:利用光固化3D打印技术打印边长为10cm的正方形,再在其表面打印出高2mm的拓扑结构,然后在上面磁控溅射导电金属,得导电基板;所述拓扑结构为边长2mm的长方体、边长为2.67mm的三角体、半径为1.27mm的圆柱体或边长为4/3mm的六边体;
(2)拓扑结构纤维的制备:将导电基板作为静电纺丝的接收板进行静电纺丝;所述静电纺丝的纺丝溶液由以下步骤制得:将聚偏氟乙烯与N-N二甲基乙酰胺和丙酮按料液比1.84g:3.25ml:1.75ml混合后于60℃搅拌至完全溶解,其后静置冷却到室温;所述静电纺丝的环境温度为20~30℃、湿度为40~50%、静电纺丝电压为14~18kv、纺丝距离为8~12cm、纺丝时间为2~4min。
2.根据权利要求1所述的制备方法,其特征在于:所述静电纺丝的环境温度为25℃、湿度为45%、静电纺丝电压为16kv、纺丝距离为10cm、纺丝时间为3min。
3.根据权利要求1~2任一项所述的制备方法制得的拓扑结构压电纤维。
4.根据权利要求3所述的拓扑结构压电纤维在制备压电器件中的应用。
5.根据权利要求4所述的应用,其特征在于,包括以下步骤:将拓扑结构压电纤维于55~65℃退火1.5~2.5h,然后贴上亚克力板、镀上电极形成压电器件。
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Citations (5)
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---|---|---|---|---|
CN101182650A (zh) * | 2007-10-30 | 2008-05-21 | 中国科学院上海硅酸盐研究所 | 一种可控图案化电纺丝纤维聚集体的制备方法 |
CN102260963A (zh) * | 2011-06-28 | 2011-11-30 | 西南交通大学 | 一种制备微纳米级图案化电纺纤维膜的方法 |
CN102691176A (zh) * | 2012-06-14 | 2012-09-26 | 东华大学 | 利用绝缘接收模板静电纺制备图案化纳米纤维膜的方法 |
EP2660377A1 (en) * | 2012-05-03 | 2013-11-06 | Chen-Cheng Huang | Method of making a double-sided embossed non-woven fabric |
CN103696024A (zh) * | 2013-12-05 | 2014-04-02 | 厦门大学 | 一种图案化纳米纤维制备装置 |
Family Cites Families (13)
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CN103334179B (zh) * | 2013-04-27 | 2015-07-22 | 青岛大学 | 一种中空结构氧化铟纳米纤维的制备方法 |
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CN105527014B (zh) * | 2016-01-12 | 2018-09-21 | 湖北大学 | 基于pvdf纳米纤维的柔性振动传感器制作方法 |
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CN108251971B (zh) * | 2018-01-31 | 2020-06-30 | 西南交通大学 | 一种柔性压电纳米纤维膜及其制备方法和应用 |
CN108385282B (zh) * | 2018-03-05 | 2020-03-06 | 厦门理工学院 | 一种三维立体纤维膜的制备方法 |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101182650A (zh) * | 2007-10-30 | 2008-05-21 | 中国科学院上海硅酸盐研究所 | 一种可控图案化电纺丝纤维聚集体的制备方法 |
CN102260963A (zh) * | 2011-06-28 | 2011-11-30 | 西南交通大学 | 一种制备微纳米级图案化电纺纤维膜的方法 |
EP2660377A1 (en) * | 2012-05-03 | 2013-11-06 | Chen-Cheng Huang | Method of making a double-sided embossed non-woven fabric |
CN102691176A (zh) * | 2012-06-14 | 2012-09-26 | 东华大学 | 利用绝缘接收模板静电纺制备图案化纳米纤维膜的方法 |
CN103696024A (zh) * | 2013-12-05 | 2014-04-02 | 厦门大学 | 一种图案化纳米纤维制备装置 |
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