CN112831914B - 一种利用针刺加固的压电改性氨纶面料及制备方法 - Google Patents

一种利用针刺加固的压电改性氨纶面料及制备方法 Download PDF

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CN112831914B
CN112831914B CN202110170457.7A CN202110170457A CN112831914B CN 112831914 B CN112831914 B CN 112831914B CN 202110170457 A CN202110170457 A CN 202110170457A CN 112831914 B CN112831914 B CN 112831914B
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戴家木
陈志汉
张伟
张瑜
李素英
徐托
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Huaian Qiaoxin New Material Technology Co ltd
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Abstract

本发明公开了一种利用针刺加固的压电改性氨纶面料,其制备方法包括以下步骤:(1)聚氨酯/石墨烯复合纤维网的制备:将石墨烯粉末添加到聚氨酯溶液中,充分混匀后,经过纺丝获得聚氨酯/石墨烯复合纤维,将其裁剪成短纤后,在梳理机中梳理得到低克重的复合纤维网,标记为纤维网A;(2)聚氨酯/聚偏氟乙烯混合纤维网的制备:将氨纶纤维与经过极化处理的聚偏氟乙烯纤维进行充分混匀,将其裁剪成短纤后,在梳理机中梳理得到低克重的混合纤维网,标记为纤维网B;(3)复合纤维面料的制备:将A、B两种纤维网按照A/B/A的方式进行叠放,保持各纤维网表面平整均匀无破损;将该三层结构的纤维网送入针刺机中进行针刺加固。

Description

一种利用针刺加固的压电改性氨纶面料及制备方法
技术领域
本发明涉及纤维材料领域,特别涉及一种具有压电效应的改性氨纶面料及制备方法。
背景技术
智能可穿戴材料作为一类柔性电子器件,在医疗健康领域得到越来越多的关注和应用。基于压电和导电方面的智能可穿戴材料种类较多,其主要需要解决的问题在于柔性、弹性以及持久性。纤维的表面修饰能够赋予其良好的导电性,但随着使用周期的延长,表面修饰层会逐渐脱落,其持久性不能得到保证。目前多数多层压电材料采用的是化学粘合的方式,降低产品的透气性和环保性,使得材料在产品开发方面受到了一定程度的限制。
发明内容
针对现有技术中存在的问题,本发明提供一种利用针刺加固的压电改性氨纶面料及制备方法,通过该方法制成的氨纶面料具有良好的拉伸弹性和导电性,在按压与拉伸作用下均能够表现出压电效应,且该面料还具有良好的透气性和环保性,可以有效地解决背景技术中提出的问题。
为实现上述目的,本发明采取的技术方案为:
一种利用针刺加固的压电改性氨纶面料,所述改性氨纶面料具有三明治结构,其中间层为聚氨酯/聚偏氟乙烯混合纤维网,其余两层为聚氨酯/石墨烯复合纤维网。
优选地,所述聚氨酯/聚偏氟乙烯混合纤维中包含20份的聚氨酯与80份的聚偏氟乙烯;所述聚氨酯/石墨烯复合纤维中包含92份的聚氨酯与8份的石墨烯。
一种利用针刺加固的压电改性氨纶面料的制备方法,包括以下步骤,
(1)聚氨酯/石墨烯复合纤维网的制备:将石墨烯粉末添加到聚氨酯溶液中,充分混匀后,经过纺丝获得聚氨酯/石墨烯复合纤维,将其裁剪成短纤后,在梳理机中梳理得到低克重的复合纤维网,标记为纤维网A;
(2)聚氨酯/聚偏氟乙烯混合纤维网的制备:将氨纶纤维与经过极化处理的聚偏氟乙烯纤维进行充分混匀,将其裁剪成短纤后,在梳理机中梳理得到低克重的混合纤维网,标记为纤维网B;
(3)复合纤维面料的制备:将A、B两种纤维网按照A/B/A的方式进行叠放,保持各纤维网表面平整均匀无破损;将该三层结构的纤维网送入针刺机中进行针刺加固。
优选地,在所述步骤(1)中,所述石墨烯粉末份数为5~10份,所述聚氨酯溶液份数为80~95份。
优选地,在所述步骤(1)中,所述石墨烯粉末的颗粒粒径为100~1000nm。
优选地,在所述步骤(2)中,所述氨纶纤维份数为10~30份,所述聚偏氟乙烯纤维份数为70~90份。
优选地,在所述步骤(3)中,所述纤维网A的克重为纤维网B的克重的0.5~1倍。
进一步地,在所述步骤(3)中,所述针刺加固包括预针刺和主针刺两个阶段。
进一步地,所述预针刺分两次进行,即将三层结构的复合纤维网刺完一面后,将其上下颠倒再刺一次,之后送至主针刺,主针刺与预针刺进行相同的处理;之后将复合纤维网翻至另一面,再分别进行预针刺与主针刺;在分别完成正反两面针刺之后,得到最终产品。
进一步地,所述预针刺和主针刺的针刺深度最远应刺至复合纤维网的中线位置。
与现有技术相比,本发明具有如下有益效果:
一、本发明中的改性氨纶面料具有三明治结构,其中间层为聚氨酯/聚偏氟乙烯混合纤维网,其余两层为聚氨酯/石墨烯复合纤维网,这些面料纤维中的改性剂均匀分散在纤维内部,能够较好的保留其使用性能,延长使用周期。其中,石墨烯与聚氨酯直接纺丝形成复合纤维,在外力摩擦或水洗等条件下不会改变其结构,性能稳定,且针刺材料的机械强度较高,因此使用周期较长。
二、本发明中的改性氨纶面料具有良好的拉伸弹性和导电性。其中,石墨烯能够提高聚氨酯的结晶度,增强拉伸强度,且石墨烯是导电性十分优良的材料,添加到聚氨酯中能显著提高面料整体的导电性能。
三、本发明中的改性氨纶面料采用聚偏氟乙烯作为压电材料,氨纶与聚偏氟乙烯纤维经过充分混合后,聚偏氟乙烯在织物面料中分布均匀,当织物被拉伸时,纤维变细伸长,这部分形变能够对纤维内部的聚偏氟乙烯形成挤压,因此该面料在按压与拉伸作用下均能够表现出压电效应,能够用作智能可穿戴设备的原材料。
四、本发明中的改性氨纶面料采用针刺加固,无需化学粘合即可得到结构稳定的多层结构,具有良好的透气性和环保性。
附图说明
图1为本发明中改性氨纶面料的结构示意图。
具体实施方式
为使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施方式,进一步阐述本发明。
实施例1
本实施例提供了一种利用针刺加固的压电改性氨纶面料,具有三明治结构,其中间层为聚氨酯/聚偏氟乙烯混合纤维网,其余两层为聚氨酯/石墨烯复合纤维网。其中,聚氨酯/聚偏氟乙烯混合纤维中包含20份的聚氨酯与80份的聚偏氟乙烯,聚氨酯/石墨烯复合纤维中包含92份的聚氨酯与8份的石墨烯。
上述改性氨纶面料的制备方法步骤如下:
(1)聚氨酯/石墨烯复合纤维网的制备:将5份粒径为1000nm的石墨烯粉末添加到95份的聚氨酯溶液中,充分混匀后,经过纺丝获得聚氨酯/石墨烯复合纤维,将其裁剪成短纤后,在梳理机中梳理得到30g/cm2的复合纤维网,标记为纤维网A。
(2)聚氨酯/聚偏氟乙烯混合纤维网的制备:将20份氨纶纤维与80份经过极化处理的聚偏氟乙烯纤维进行充分混匀,将其裁剪成短纤后,在梳理机中梳理得到克重为30 g/cm2的混合纤维网,标记为纤维网B。
(3)复合纤维面料的制备:将A、B两种纤维网按照A/B/A的方式进行叠放,保持各纤维网表面平整均匀无破损。将该三层结构的纤维网送入针刺机中进行针刺加固。针刺加固包括预针刺和主针刺两个阶段,预针刺分两次进行,即刺完一面后,将其上下颠倒再刺一次,之后送至主针刺,主针刺与预针刺进行相同的处理。之后将复合纤维网翻至另一面,再分别进行预针刺与主针刺,在分别完成正反两面针刺之后,得到最终产品。
其中,预针刺和主针刺的针刺最远应刺至复合纤维网的中线位置。
本发明中,制得的针刺加固的压电改性氨纶面料,其结构稳定,轻薄透气,压电性能良好,在20kPa的压力下,测得电压和电流约为0.58V和3.2nA。
实施例2
本实施例中的改性氨纶面料与实施例1中的改性氨纶面料结构完全相同,此处不做赘述。
上述改性氨纶面料的制备方法步骤如下:
(1)聚氨酯/石墨烯复合纤维网的制备:将10份粒径为1000nm的石墨烯粉末添加到90份的聚氨酯溶液中,充分混匀后,经过纺丝获得聚氨酯/石墨烯复合纤维,将其裁剪成短纤后,在梳理机中梳理得到克重为30g/cm2的复合纤维网,标记为纤维网A。
(2)聚氨酯/聚偏氟乙烯混合纤维网的制备:将10份氨纶纤维与90份经过极化处理的聚偏氟乙烯纤维进行充分混匀,将其裁剪成短纤后,在梳理机中梳理得到克重为45 g/cm2的混合纤维网,标记为纤维网B。
(3)复合纤维面料的制备:将A、B两种纤维网按照A/B/A的方式进行叠放,保持各纤维网表面平整均匀无破损。将该三层结构的纤维网送入针刺机中进行针刺加固。本实施例中的针刺加固步骤与实施例1中的相同,此处不做赘述。
本发明中,制得的针刺加固的压电改性氨纶面料,其结构稳定,厚度相对较大,压电性能良好,在20kPa的压力下,测得电压和电流约为0.63V和3.5nA。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (9)

1.一种利用针刺加固的压电改性氨纶面料,其特征在于:所述改性氨纶面料具有三明治结构,其中间层为聚氨酯纤维/聚偏氟乙烯纤维混合纤维网,其余两层为聚氨酯聚合物/石墨烯复合纤维网;所述聚氨酯纤维/聚偏氟乙烯纤维混合纤维中包含10~30份的聚氨酯与70~90份的聚偏氟乙烯;所述聚氨酯聚合物/石墨烯复合纤维中包含80~95份的聚氨酯与5~10份的石墨烯。
2.一种利用针刺加固的压电改性氨纶面料的制备方法,其特征在于:包括以下步骤,
(1)聚氨酯/石墨烯复合纤维网的制备:将石墨烯粉末添加到聚氨酯溶液中,充分混匀后,经过纺丝获得聚氨酯/石墨烯复合纤维,将其裁剪成短纤后,在梳理机中梳理得到低克重的复合纤维网,标记为纤维网A;
(2)聚氨酯/聚偏氟乙烯混合纤维网的制备:将氨纶纤维与经过极化处理的聚偏氟乙烯纤维进行充分混匀,将其裁剪成短纤后,在梳理机中梳理得到低克重的混合纤维网,标记为纤维网B;
(3)复合纤维面料的制备:将A、B两种纤维网按照A/B/A的方式进行叠放,保持各纤维网表面平整均匀无破损;将该三层结构的纤维网送入针刺机中进行针刺加固。
3.根据权利要求2所述的一种利用针刺加固的压电改性氨纶面料的制备方法,其特征在于:在所述步骤(1)中,所述石墨烯粉末质量份数为5~10质量份,所述聚氨酯溶液质量份数为80~95质量份。
4.根据权利要求2所述的一种利用针刺加固的压电改性氨纶面料的制备方法,其特征在于:在所述步骤(1)中,所述石墨烯粉末的颗粒粒径为100~1000nm。
5.根据权利要求2所述的一种利用针刺加固的压电改性氨纶面料的制备方法,其特征在于:在所述步骤(2)中,所述氨纶纤维份数为10~30份,所述聚偏氟乙烯纤维份数为70~90份。
6.根据权利要求2所述的一种利用针刺加固的压电改性氨纶面料的制备方法,其特征在于:在所述步骤(3)中,所述纤维网A的克重为纤维网B的克重的0.5~1倍。
7.根据权利要求2所述的一种利用针刺加固的压电改性氨纶面料的制备方法,其特征在于:在所述步骤(3)中,所述针刺加固包括预针刺和主针刺两个阶段。
8.根据权利要求7所述的一种利用针刺加固的压电改性氨纶面料的制备方法,其特征在于:所述预针刺分两次进行,即将三层结构的复合纤维网刺完一面后,将其上下颠倒再刺一次,之后送至主针刺,主针刺与预针刺进行相同的处理;之后将复合纤维网翻至另一面,再分别进行预针刺与主针刺;在分别完成正反两面针刺之后,得到最终产品。
9.根据权利要求8所述的一种利用针刺加固的压电改性氨纶面料的制备方法,其特征在于:所述预针刺和主针刺的针刺深度最远应刺至复合纤维网的中线位置。
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