Formulation of UV curable nano-silver conductive ink for direct screen-printing on common fabric substrates for wearable electronic applications

2021 ◽  
Vol 30 (4) ◽  
pp. 045001
Author(s):  
Hong Hong ◽  
Lihong Jiang ◽  
Huating Tu ◽  
Jiyong Hu ◽  
Xiong Yan
Keyword(s):  
Screen Printing ◽  
Conductive Ink ◽  
Uv Curable ◽  
Nano Silver ◽  
Wearable Electronic

Research and Manufacture of Nano-Silver Conductive Ink

2010 ◽  
Vol 174 ◽  
pp. 405-408 ◽  
Author(s):  
Bao Lin Tang ◽  
Guang Xue Chen ◽  
Qi Feng Chen ◽  
Jing Lei Tai
Keyword(s):  
Chemical Reduction ◽  
Nitrate Solution ◽  
Acrylic Resin ◽  
Silver Nitrate Solution ◽  
Nano Particles ◽  
Conductive Ink ◽  
Surface Protection ◽  
Nano Silver ◽  
Conductive Fillers ◽  
Liquid Chemical

Printing electronics technology promotes the application of conductive ink. In this paper, the manufacture of nano-sliver conductive ink is investigated. First, Spherical silver nano-particles were reduced from silver nitrate solution by liquid chemical reduction method, with hydrazine hydrate as reductant and PVP as surface-protection reagent. SEM was used to characterize the morphology of silver powders, and the mean particles size is 62.79 nm. Then, conductive ink was prepared with nano-silver particles made in this research as conductive fillers, polyurethane resin and acrylic resin as binders, and stearic acid as dispersant. In the last, the conductive ink was printed on the PCB substrate by screening printing. After the ink is dried, conductivity, abrasion resistance, and adhesion were tested. The experiment results shows that the order of sheet resistivity magnitude is 10-4Ω•m, the number of rubbing fastness is more than 6000, and the adhesion can be resisted repeatedly to tape tear.

Preparation of Conductive Nanosilver Ink and its Application on RFID Tags

2014 ◽  
Vol 904 ◽  
pp. 121-125 ◽  
Author(s):  
Ji Lan Fu ◽  
Ya Ling Li ◽  
Li Xin Mo ◽  
Yu Wang ◽  
Jun Ran ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Screen Printing ◽  
Surface Resistance ◽  
Large Scale ◽  
Printed Electronics ◽  
Silver Content ◽  
Rfid Tags ◽  
Rheological Characteristics ◽  
Conductive Ink ◽  
New Type

The recent dramatic progress in the printed electronics and flexible electronics, due to the universality of the substrates including the foldable and stretchable substrates, has opened a new prospect in the field of future electronics. In this paper, silver nanospheres in large-scale are synthesized, the nanosilver ink with 63.88% silver content are prepared and a new type of highly conductive and far identify distance RFID tags are manufactured. Especially there are no resin and other additives containing in our conductive ink which satisfy the rheological characteristics and process of screen printing. The tags exhibit the best radiation performance own to there is no high temperature sintering in need. The surface resistance of the tags could be 80 mΩ/, and the identify distance reach to 6.0m. Keywords:silver nanoparticles, conductive ink, RFID tags

Preparation and application of water-based nano-silver conductive ink in paper-based 3D printing

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Chenfei Zhao ◽  
Jun Wang ◽  
Lini Lu
Keyword(s):  
Flexible Electronics ◽  
Low Cost ◽  
Methyl Cellulose ◽  
Conductive Ink ◽  
Content Type ◽  
Nano Silver ◽  
Printed Circuit ◽  
Silver Ink ◽  
Sintering Time ◽  
Water Based

Purpose In flexible electronics applications, organic inks are mostly used for inkjet printing. Three-dimensional (3 D) printing technology has the advantages of low cost, high speed and good precision in modern electronic printing. The purpose of this study is to solve the high cost of traditional printing and the pollution emissions of organic ink. It is necessary to develop a water-based conductive ink that is easily degradable and can be 3 D printed. A nano-silver ink printed circuit pattern with high precision, high conductivity and good mechanical properties is a promising strategy. Design/methodology/approach The researched nano-silver conductive ink is mainly composed of silver nanoparticles and resin. The effect of adding methyl cellulose on the ink was also explored. A simple 3 D circuit pattern was printed on photographic paper. The line width, line length, line thickness and conductivity of the printed circuit were tested. The influence of sintering temperature and sintering time on pattern resistivity was studied. The relationship between circuit pattern bending performance and electrical conductivity is analyzed. Findings The experimental results show that the ink has the characteristics of low silver content and good environmental protection effect. The printing feasibility of 3 D printing circuit patterns on paper substrates was confirmed. The best printing temperature is 160°C–180°C, and the best sintering time is 30 min. The circuit pattern can be folded 120°, and the cycle is folded more than 60 times. The minimum resistivity of the circuit pattern is 6.07 µΩ·cm. Methyl cellulose can control the viscosity of the ink. The mechanical properties of the pattern have been improved. The printing method of 3 D printing can significantly reduce the sintering time and temperature of the conductive ink. These findings may provide innovation for the flexible electronics industry and pave the way for alternatives to cost-effective solutions. Originality/value In this study, direct ink writing technology was used to print circuit patterns on paper substrates. This process is simple and convenient and can control the thickness of the ink layer. The ink material is nonpolluting to the environment. Nano-silver ink has suitable viscosity and pH value. It can meet the requirements of pneumatic 3 D printers. The method has the characteristics of simple process, fast forming, low cost and high environmental friendliness.

Rheological properties and screen printability of UV curable conductive ink for flexible and washable E-textiles

2021 ◽  
Vol 67 ◽  
pp. 145-155
Author(s):  
Hong Hong ◽  
Hu Jiyong ◽  
Kyoung-Sik Moon ◽  
Xiong Yan ◽  
Ching-ping Wong
Keyword(s):  
Rheological Properties ◽  
Conductive Ink ◽  
Uv Curable

A Nano-Silver Inkjet Conductive Ink with Excellent Adhesion

2012 ◽  
Vol 262 ◽  
pp. 501-504 ◽  
Author(s):  
Jun Ran ◽  
Li Xin Mo ◽  
Wen Bo Li ◽  
Wei Wei Li ◽  
Xin Ming Fan ◽  
...  
Keyword(s):  
Structural Evolution ◽  
Heat Treating ◽  
Treatment Temperature ◽  
Protective Agent ◽  
Conductive Ink ◽  
Post Heat Treatment ◽  
Nano Silver ◽  
Conductive Materials ◽  
Excellent Adhesion ◽  
Printed Patterns

In this paper，the preparation of a solvent based nano-silver inkjet conductive ink with excellent adhesion was investigated and applied. Nano-silver particles, with dodecylamine (DDA) as the protective agent, were prepared and the effect of protective agent on the post heat-treatment of nano- silver films was investigated. Results of electrical resistance, micro-structural evolution and thermal analysis showed that the Ag/DDA films require a relatively low treatment temperature to convert into conductive materials. Then the conductive ink was prepared with well dispersed Ag/DDA nanoparticles and the ink was printed patterns on PET、PI films through EPSON ME 33 inkjet printer , the patterns showed a sheet resistance is 182.3mΩ/□ and the adhesion reached to 5B after heat-treating at 120°C for 60min .

scholarly journals Comparison of E-Textile Techniques and Materials for 3D Gesture Sensor with Boosted Electrode Design

Sensors ◽  
2020 ◽  
Vol 20 (8) ◽  
pp. 2369 ◽  
Author(s):  
Josue Ferri ◽  
Raúl Llinares Llopis ◽  
Gabriel Martinez ◽  
José Vicente Lidon Roger ◽  
Eduardo Garcia-Breijo
Keyword(s):  
Screen Printing ◽  
Critical Parameters ◽  
Electrode Design ◽  
Conductive Ink ◽  
Detection Rates ◽  
Conductive Materials ◽  
Specific Parameter ◽  
Environmental Variations ◽  
Manufacturing Techniques ◽  
The Stability

There is an interest in new wearable solutions that can be directly worn on the curved human body or integrated into daily objects. Textiles offer properties that are suitable to be used as holders for electronics or sensors components. Many sensing technologies have been explored considering textiles substrates in combination with conductive materials in the last years. In this work, a novel solution of a gesture recognition touchless sensor is implemented with satisfactory results. Moreover, three manufacturing techniques have been considered as alternatives: screen-printing with conductive ink, embroidery with conductive thread and thermosealing with conductive fabric. The main critical parameters have been analyzed for each prototype including the sensitivity of the sensor, which is an important and specific parameter of this type of sensor. In addition, user validation has been performed, testing several gestures with different subjects. During the tests carried out, flick gestures obtained detection rates from 79% to 89% on average. Finally, in order to evaluate the stability and strength of the solutions, some tests have been performed to assess environmental variations and washability deteriorations. The obtained results are satisfactory regarding temperature and humidity variations. The washability tests revealed that, except for the screen-printing prototype, the sensors can be washed with minimum degradation.

Study of RFID Tag Antenna Manufacturing Based on Printing Technology

2013 ◽  
Vol 329 ◽  
pp. 135-138
Author(s):  
Cai Feng Liu ◽  
Di Feng Lu ◽  
Fui Gui Yan ◽  
Yang Mei
Keyword(s):  
Screen Printing ◽  
Influence Factors ◽  
Conductive Ink ◽  
Three Solutions ◽  
Printing Technology ◽  
Rfid Tag ◽  
Effective Work ◽  
Printing Quality ◽  
The Cost

To study printing technology used in the RFID field, just want to make the cost of tags much lower. Since printing technology has widely used in RFID field,there are many problems. Through analysis of influence factors of antenna printing technology, three solutions to solve the difficultys of RFID tag antenna manufacturing use of printing technology. In order to improve the printing quality of the printed ink film of the RFID tag antenna, many factors should be considered. Finally, agrees that the future of conductive ink screen printing manufacturing RFID tag antenna technology is splendid with our effective work.

Research on the Conductivity of UV-Curable Conductive Ink

2013 ◽  
Vol 469 ◽  
pp. 51-54 ◽  
Author(s):  
Ling Ya Gu ◽  
Guo Yu Wang ◽  
Dan Dan Wang
Keyword(s):  
Silver Powder ◽  
Great Influence ◽  
Circuit Board ◽  
Cross Linking ◽  
Conductive Ink ◽  
Uv Curable ◽  
Conductive Material ◽  
Conductive Property

In order to fulfill the demand of fine circuit board, a UV-curable conductive ink was prepared, and the factors affect conductivity of ink was studied. Different UV conductive paste was prepared with different kinds of conductive material to research the influence of conductive material on the conductivity of paste. Change the variety of photoinitiator to prepare UV-curable conductive ink, and the effect of photoinitiator on the conductivity of ink was also studied. The results indicated that the variety of conductive material has a great influence on the conductivity of UV-curable ink. The ink, which prepared with flaky and spherical silver powder, has the best conductive property. Whats more, the conductivity of UV-curable ink is different with the change of photoinitiator, which would lead different cross-linking reaction after curing.

scholarly journals Development of User-Friendly Wearable Electronic Textiles for Healthcare Applications

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2410 ◽  
Author(s):  
Kai Yang ◽  
Katie Meadmore ◽  
Chris Freeman ◽  
Neil Grabham ◽  
Ann-Marie Hughes ◽  
...  
Keyword(s):  
Screen Printing ◽  
Electrode Array ◽  
Ease Of Use ◽  
Electronic Textiles ◽  
Healthcare Applications ◽  
Dry Electrodes ◽  
Wearable Electronic ◽  
Cleaning Methods ◽  
User Friendly ◽  
Hand Opening

This paper presents research into a user-friendly electronic sleeve (e-sleeve) with integrated electrodes in an array for wearable healthcare. The electrode array was directly printed onto an everyday clothing fabric using screen printing. The fabric properties and designed structures of the e-sleeve were assessed and refined through interaction with end users. Different electrode array layouts were fabricated to optimize the user experience in terms of comfort, effectivity and ease of use. The e-sleeve uses dry electrodes to facilitate ease of use and the electrode array can survive bending a sufficient number of times to ensure an acceptable usage lifetime. Different cleaning methods (washing and wiping) have been identified to enable reuse of the e-sleeve after contamination during use. The application of the e-sleeve has been demonstrated via muscle stimulation on the upper limb to achieve functional tasks (e.g., hand opening, pointing) for eight stroke survivors.

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