Preparation And Performance Study Of Durable And Highly Sensitive Flexible Fabric Pressure Senso

In recent years,the use of flexible pressure sensors has shown great promise in various fields such as human health detection,electronic skin,human-computer interaction,and wearable heaters.Among these,flexible resistive pressure sensors are highly sought after for wearable devices due to their simple structure,easy manufacturing process,excellent sensing performance,and adaptability to various environmental conditions.In practical applications,pressure sensors require high sensitivity,a wide sensing range,and exceptional durability to adapt to complex work environments and meet diverse needs.This study utilized polyester non-woven fabric as a flexible substrate to create a multifunctional wearable device.The device boasts high sensitivity,stability,and anti-interference capabilities,while also having a simple preparation process,low cost,and potential for commercial production.The specific work of this paper is as follows:In this study,we utilized polyester non-woven fabric as a flexible substrate.The fiber surface was evenly coated with polypyrrole through an in-situ polymerization method.We then chemically doped and modified the polypyrrole with phytic acid to improve the conductivity of polypyrrole molecules.Finally,Hexadecyltrimethoxysilane（HTDMS）is utilized to modify the fabric’s surface,resulting in a superhydrophobic conductive fabric that exhibits exceptional electrical conductivity and stability.The results indicate that the fabric exhibits outstanding electrical conductivity,as evidenced by its low resistivity of 6.48Ω·cm.Additionally,the fabric demonstrates impressive chemical and mechanical stability.A flexible wearable pressure sensor with exceptional sensing performance is fabricated using composite fabric.The sensor exhibits high sensitivity(35.45 k Pa^-1),a wide response range（≤300 k Pa）,and excellent cycle stability（2000 cycles）.In addition,the sensor is highly responsive to various movements such as finger bending,walking,mouse clicking,and pulse vibrations.This makes it suitable for fabric pressure array applications.In this section,The objective of this work was to optimize the traditional electroless copper plating process by leveraging the reductive nature of polypyrrole.we successfully deposited nano-copper onto the surface of polypyrrole and subsequently treated it with polydimethylsiloxane（PDMS）.The resulting fabric demonstrated both high conductivity and stability,while also exhibiting superhydrophobic properties.The fabric exhibits exceptional electrical conductivity,with a resistivity as low as 0.044Ω·cm.And,the fabric demonstrates remarkable chemical and mechanical stability,along with potent antibacterial properties.This fabric demonstrated multiple functions,making it a promising material for various applications.In addition,the electroless copper plating process is green and environmentally friendly,has low cost,and can realize large-scale production.A flexible wearable pressure sensor with exceptional sensing performance is fabricated using composite fabric.The sensor exhibits high sensitivity(1478.33 k Pa^-1),a wide response range（≤300 k Pa）,and excellent cycle stability（5000 cycles）.The sensor demonstrates exceptional sensitivity to finger bending,walking,mouse clicking,pulse vibration,among other movements,making it a valuable component in fabric pressure array applications.The fabric exhibits remarkable superhydrophobic,antibacterial,electrothermal,and electromagnetic shielding properties,which make it a versatile material with promising applications.