Stretchable and wash durable reactive silver ink coatings for electromagnetic interference shielding, Joule heating, and strain sensing textiles
Stretchable and wash durable reactive silver ink coatings for electromagnetic interference shielding, Joule heating, and strain sensing textiles
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DOI：
10.1016/j.porgcoat.2023.107506
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发表时间：
2023-02-25
影响因子：
6.6
通讯作者：
Leu, Paul W.
中科院分区：
文献类型：
--
作者：
Li, Mingxuan;Zarei, Mehdi;Leu, Paul W.
在本文中，我们展示了一种高导电性，可拉伸，耐洗织物的各种电子纺织品的应用，如电磁干扰（EMI）屏蔽，焦耳加热，应变传感，利用化学蚀刻剂预处理，促进共价键合，反应性银油墨与保形原位银减少，和使用的聚合物涂层的保护屏障。涂覆在聚对苯二甲酸乙二醇酯（PET）针织纺织品上的反应性油墨在X波段（频率范围为8-12 GHz）中表现出74.8 dB的平均EMI屏蔽效率，在Ku波段（12-18 GHz）中表现出76.6 dB的平均EMI屏蔽效率。导电纺织品显示出高焦耳加热性能，其中仅在1.3V DC施加电压下就可以实现152摄氏度的温度。这种焦耳加热性能在拉伸和洗涤后保持不变。此外，该织物可用于应变感测和监测人体运动。制备的银膜在50%应变下1000次拉伸循环后不降解，并且在300分钟洗涤后保持EMI SE高于70 dB。所展示的纺织品可用于可穿戴电子产品、个人医疗设备和下一代通信。
In this paper, we demonstrate a highly conductive, stretchable, and wash-durable fabric for a variety of elec-tronic textile applications such as electromagnetic interference (EMI) shielding, Joule heating, and strain sensing by utilizing a chemical etchant pretreatment that promotes covalent bonding, a reactive silver ink with conformal in situ silver reduction, and the use of a polymer coating for a protective barrier. Reactive ink coated on polyethylene terephthalate (PET) knitted textiles exhibit an average EMI shielding efficiency of 74.8 dB in the X band (frequency range of 8-12 GHz) and 76.6 dB in the Ku band (12-18 GHz). The conductive textiles show high Joule heating performance, where a temperature of 152 degrees C can be achieved at only 1.3 V DC applied voltage. This Joule heating performance is maintained after stretching and washing. Furthermore, the textile may be used for strain sensing and monitoring human movement. As prepared silver films do not degrade after 1000 stretching cycles at 50 % strain and maintain EMI SE higher than 70 dB after 300 min washing. The demonstrated textiles may be used for wearable electronics, personal medical devices, and next generation communications.