CN113737523A - 一种高强度柔性拉力传感纤维绳的制备方法 - Google Patents
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Abstract
本发明涉及一种高强度柔性拉力传感纤维绳的制备方法,属于复合材料领域。纺织物是一种非常有潜力的可穿戴智能传感器的衬底,高强度的纤维绳更是一种具有代表性的传感基材,将其与导电物质混合可以制备一种新型的高强度柔性拉力传感器件。这类传感器件可以将拉伸过程中的力学信号转化为电信号从而达到人机交互的目的,本发明使用离子液体和两种单体N,N‑二甲基丙烯酰胺、正硅酸四乙酯等原料混合反应,得到均匀溶液,而后采用过饱和浸渍法将氨/锦纶混纺纤维绳浸渍在预制溶液中,最后用紫外光源进行原位聚合。本发明制备的高强度传感纤维绳具有高弹性、柔性、外力传感的特性,在复合材料领域具有广阔的应用前景。
Description
技术领域
本发明涉及一种高强度柔性拉力传感纤维绳的制备方法,属于复合材料领域。
背景技术
随着智能织物等柔性可穿戴产品的发展,复合导电材料在柔性力学传感器件领域的应用中取得突破和巨大进展,越来越多的研究者致力于开发新型智能穿戴产品。纺织物是一种非常有潜力的可穿戴智能传感器的衬底,高强度的纤维绳更是一种具有代表性的传感基材,将其与导电物质混合可以制备一种新型的高强度柔性拉力传感器件。这类传感器件可以将拉伸过程中的力学信号转化为电信号从而达到人机交互的目的,从而能广泛应用于传感器电子元件,可使其在导电、传感等方面具有广阔的应用前景,如纳米机器人,健康监测穿戴品等。
发明内容
本发明使用离子液体和两种单体N,N-二甲基丙烯酰胺、正硅酸四乙酯等原料混合反应,得到均匀溶液,而后采用过饱和浸渍法将氨/锦纶混纺纤维绳浸渍在预制溶液中。本发明制备的高强度传感纤维绳具有高弹性、柔性、外力传感的特性,在复合材料领域具有广阔的应用前景。
为实现上述目的,本发明采用的技术方案如下:
(1)按照反应时所需浓度,量取一定量的离子液体1-丁基-3-甲基咪唑双三氟甲磺酰亚胺盐、无水甲酸和正硅酸四乙酯,在氮气保护下共混搅拌;
(2)按照所需浓度,称取一定量的α-酮戊二酸、N,N’-亚甲基双丙烯酰胺和N,N-二甲基丙烯酰胺,继续共混搅拌;
(3)将氨/锦纶混纺纤维绳放入制备的溶液中,采用过饱和浸渍法,达到吸附平衡后将纤维绳置于密封容器,放进烘箱加热;
(4)将浸渍处理过的纤维绳置于紫外光源下照射后真空干燥;
(5)对拉伸传感纤维绳和未浸渍的原绳进行对比测试分析。
上述步骤(1)中所述的离子液体1-丁基-3-甲基咪唑双三氟甲磺酰亚胺盐的用量为1-100g,无水甲酸的用量为0.1-10mL,正硅酸四乙酯的用量为0.1-10mL;
上述步骤(1)中共混搅拌的时间为1-10h;
上述步骤(2)中所述α-酮戊二酸的用量为0.001-0.01g,N,N’-亚甲基双丙烯酰胺用量为0.001-0.01g,N,N-二甲基丙烯酰胺的用量为0.2-20mL;
上述步骤(2)中共混搅拌的时间为1-10h;
上述步骤(3)中氨/锦纶混纺纤维绳的截面直径为0.5-50mm,长度为1-100m,浸渍比为10%-500%,计算公式为:
w0为欲浸渍纤维绳的重量,l0为浸渍溶液的质量;
上述步骤(3)中烘箱的加热温度为10-80℃,加热时间为24-72h;
上述步骤(4)中紫外光源波长为300-400nm,照射时间为1-10h,真空干燥时间为5-10h;
上述步骤(5)所述测试包括外观对比、电子显微镜进行微观形貌对比、万能材料试验机检测机械拉伸强度、传感测试检测***检测拉伸传感电阻信号变化;
上述步骤(5)所述电学性能测试的电阻数据处理公式为:
R0为初始电阻,R为动态电阻。
本发明的优越性:
本发明采用紫外光聚合法,将双网络离子凝胶与纤维绳结合,制备一种基于氨/锦纶混纺织物结构的高强度拉力传感器件。氨/锦纶混纺纤维绳优异的弹性和高强度是作为拉力传感器基材的理想材料,结合了导电组份的复合纤维绳拥有极好的电信号传输能力,可以组装成高电导率的应变传感器,设计组装后可广泛应用于智能穿戴纺织品、柔性传感装置、柔性电极等高新科技领域。
附图说明
以下附图仅旨在于对本发明做示意性说明及解释,并不限于本发明的范围。其中:
图1:为本发明中实施例1的结果图。
图2:为本发明中实施例2的结果图。
图3:为本发明中实施例3的结果图。
具体实施方式
下面结合附图与具体的实施方案叙述本发明。除非特别说明,本发明中所用的技术手段均为本领域技术人员所公知的方法。另外,实施方案应理解为说明性的,而非限制本发明的范围,本发明的实质和范围仅由权利要求书所限定。对于本领域技术人员而言,在不背离本发明实质和范围的前提下,对这些实施方案中的物料成分和用量进行的各种改变或改动也属于本发明的保护范围。
实施例1:按照本发明的技术方案进行实验制备得到的高强度柔性拉力传感纤维绳如图1所示,(a)为预处理后的氨/锦纶混纺纤维绳,(b)为浸渍后紫外原位聚合得到的应变传感纤维绳。从外形看无明显差别,但整理后的复合纤维绳颜色略黄,这应该是浸渍吸附的溶液在聚合后原位固化,这也使得其外部的纤维结构更加明显;(c)为预处理后的氨/锦纶混纺纤维绳的飞纳扫描电子显微镜图,(d)为应变传感纤维绳的飞纳扫描电子显微镜图。两图对比看出导电组份成功聚合在纤维表面。
实施例2:设定所制备的拉力传感纤维绳和氨/锦纶混纺纤维绳两组试验样品做对照,利用INSTRON万能材料试验机对待测样品进行强力测试,绘制应变-载荷曲线,如图2所示,同一载荷条件下,拉力传感纤维绳的应变比原绳的应变要小;当产生同样的应变时,拉力传感纤维绳所需拉伸载荷比原绳所需要的大了一倍左右。拉力传感纤维绳的最大断裂强度约为55N大于原绳的50N,说明纤维绳浸渍处理后结构内部密度增大,原位聚合的导电物质也起到了一定的增韧作用。纤维内部被导电组份占据,拉伸性能稍微降低,但拉力传感纤维绳的最大拉伸应变仍能达到350%,原绳的最大拉伸应变为420%。
实施例3:本发明所制备的拉力传感纤维绳旨在用于力学传感,以实现人机交互等,我们用传感测试机器对其拉伸电阻进行检测,并绘制拉伸应变为100%时的时间-电阻变化率曲线,如图3所示,图中波形均匀、稳定,表明该拉力传感纤维绳的可重复性较高,电阻变化率达到了0.3,信号响应性能较好。
Claims (6)
1.一种高强度柔性拉力传感纤维绳的制备方法,包括以下步骤:
(1)按照反应时所需浓度,量取一定量的离子液体1-丁基-3-甲基咪唑双三氟甲磺酰亚胺盐、无水甲酸和正硅酸四乙酯,在氮气保护下共混搅拌;
(2)按照所需浓度,称取一定量的α-酮戊二酸、N,N’-亚甲基双丙烯酰胺和N,N-二甲基丙烯酰胺,继续共混搅拌;
(3)将氨/锦纶混纺纤维绳放入制备的溶液中,采用过饱和浸渍法,达到吸附平衡后将纤维绳置于密封容器,放进烘箱加热;
(4)将浸渍处理过的纤维绳置于紫外光源下照射后真空干燥;
(5)对拉伸传感纤维绳和未浸渍的原绳进行对比测试分析。
2.根据权利要求1所述一种高强度柔性拉力传感纤维绳的制备方法,其特征在于,上述步骤(1)中所述的离子液体1-丁基-3-甲基咪唑双三氟甲磺酰亚胺盐的用量为1-100g,无水甲酸的用量为0.1-10mL,正硅酸四乙酯的用量为0.1-10mL,共混搅拌的时间为1-10h。
3.根据权利要求1所述一种高强度柔性拉力传感纤维绳的制备方法,其特征在于,上述步骤(2)中所述α-酮戊二酸的用量为0.001-0.01g,N,N’-亚甲基双丙烯酰胺用量为0.001-0.01g,N,N-二甲基丙烯酰胺的用量为0.2-20mL,共混搅拌的时间为1-10h。
5.根据权利要求1所述一种高强度柔性拉力传感纤维绳的制备方法,其特征在于,上述步骤(4)中紫外光源波长为300-400nm,照射时间为1-10h,真空干燥时间为5-10h。
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