BazTech - Yadda

1

Zagrożenia od wyładowań z powierzchni tkanin

Kacprzyk R., Król J.

Przegląd Elektrotechniczny

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2018

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R. 94, nr 10

113--117

PL

Zaproponowano uproszczony model układu uziemiony obiekt-naładowana tkanina, pozwalający na oszacowanie energii możliwej do uwolnienia z powierzchni tkaniny podczas wyładowania elektrostatycznego. Badano tkaninę syntetyczną zawierającą włókna przewodzące. Jako uziemiony obiekt przyjęto elektrodę kulistą, stosowaną w pomiarach ładunku przenoszonego. Przedstawiony model prowadzi do potęgowej zależności energii uwolnionej w trakcie wyładowania od gęstości wprowadzenia włókien przewodzących.

EN

A simplified model of the grounded object-charged fabric system was proposed. It allows to estimate the energy that can be released from the fabric surface during electrostatic discharge. The synthetic fabric containing conductive fibres was tested. A spherical electrode, used for charge transport measurements, was adopted as a grounded object. The presented model has led to the power type relation between released energy and the density of introducing conductive fibres.

2

Preparation of Copper Sulfide Deposition on Modified Poly (Ethylene Terephtalate) Fibres with Good Conductivity

Zheng G., Juan X.

Fibres & Textiles in Eastern Europe

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2018

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Vol. 26, no. 1 (127)

25--29

EN

The immobilization of CuS on the surface of poly (ethylene terephtalate) (PET) fibres was carried out by the functionalization of PET fibres with chitosan (CS), followed by the chemical deposition method. Crosslinked chitosan with NH2 functionality was used as a chelator to absorb copper ions, which can successfully initiate CuS deposition in the following chemical deposition stage. The CuS-loaded fibres were characterised by scanning electron microscopy, X-ray diffraction, infrared spectroscopy and thermal gravimetry, respectively. The properties of tensile and conductivity were also investigated. The lowest surface resistance 42 Ω/cm of the treated PET fibres was obtained when the CS concentration was 1.0%.

PL

W pracy zbadano proces osadzania siarczku miedzi na modyfikowanych chitozanem włóknach poliestrowych. Chitozan został użyty jako chelator do absorbowania jonów miedzi, które z powodzeniem mogą inicjować odkładanie siarczku miedzi w etapie osadzania chemicznego. Włókna nasycone siarczkiem miedzi scharakteryzowano za pomocą skaningowej mikroskopii elektronowej, dyfrakcji rentgenowskiej, spektroskopii w podczerwieni i grawimetrii termicznej. Zbadano również właściwości wytrzymałościowe i przewodność włókien. Najniższą oporność powierzchniową (42 Ω/cm) poddanych obróbce włókien poliestrowych uzyskano, gdy stężenie siarczku wynosiło 1,0%.

3

Preparation of Melt Spun Electroconductive Fine Fibres Containing Carbon Nanotubes

Mirjalili M., Karimi L.

Autex Research Journal

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2015

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Vol. 15, no. 2

87--92

EN

Preparation of electroconductive fine fibres containing carbon nanotubes (CNTs) by melt spinning was the main goal of the present study. In this regard, the influence of the main operating parameters such as type of polymer used (polyester, polypropylene and polyamide), type and concentration of the CNTs on conductivity, and mechanical and thermal properties of the melt spun fibres was studied. The conductivity of melt spun fibres was measured based on the method developed by Morton and Hearl. The morphologies of the CNTs–polymer composite fibres were studied by scanning electron microscopy. Thermal behaviours and mechanical properties of the CNTs–polymer composite fibres were investigated using differential scanning calorimetry and tearing tester, respectively. The results reveal that using CNTs had tangible effect on electrical, thermal and mechanical properties of the melt spun fibres. Also, polyamide had a better dispersion of CNTs and correspondingly lower surface resistivity.

4

Modelling of Surface and Bulk Resistance for Wearable Textile Antenna Design

Vojtech L., Neruda M.

Przegląd Elektrotechniczny

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2013

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R. 89, nr 2b

217--222

EN

Antennas and other high frequency structure design influence also textile industry in the form of smart textile applications. One of them calls wearable antennas. Proper design of these antennas includes also modelling based on knowledge of textile material parameters of its functional surface, substrate and structure. Paper focuses on modelling of textile structure with electrically conductive fibres and its verification by optic and DC surface and bulk resistance measurement methods.

PL

W artykule przedstawiono zagadnienie tworzenia anten zintegrowanych z odzieżą. Skupiono się na modelowaniu struktury tkaniny, w zależności od rodzaju materiału i jego struktury, zawierającej przewodzące włókna. Dokonano analizy materiału, w oparciu o rezystancję objętościową, powierzchniową i optyczną.

5

Fibre-based single-wire keyboard - the integration of a flexible tactile sensor into e-textiles

Guo L., Soroudi A., Berglin L., Mattila H., Skrifvars M., Torstensson H.

Autex Research Journal

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2011

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Vol. 11, no. 4

106--109

EN

A flexible textile keyboard, using carbon nanotube (CNT) filled polypropylene (PP) composite fibres, is introduced. The identification of input information is achieved by reading the effective resistance of the conductive composite fibre. By using a single wire, a complex matrix is avoided and the interface between textiles and processing electronics is reduced to a minimum. LabVIEW has been used as the output display of the keyboard indicator for testing. This keyboard is fully flexible and washable, which provides opportunities for its integration with e- textiles.

6

Research and Development in the Field of Special Protective Clothing; Requirements for Selected Methods and Products

Vogel C., Beier H., Erth H.

Fibres & Textiles in Eastern Europe

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2006

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Vol. 14, no. 5 (59)

29--34

EN

Clothes with antistatic properties are demanded in many fields of the industry. This is generally achieved by integrating highly-conductive fibres of different structures. Antistatic functionality is assessed by applying standardised test methods. The ongoing development of antistatic materials and clothes, as well as updating the requirements, requires a permanent adaptation of the examination basis. The aim is a comprehensive and practice-oriented assessment of antistatic characteristics. This paper describes selected research results from the Saxon Textile Research Institute (STFI) in the field of textile electrostatics. As well as methods for the antistatic assessment of fabrics, a method for classifying fully antistatic clothes is introduced. Another field of the STFI’s research comprises the development of test & assessment methods for protective clothing against the thermal risks of an electrical arc. Fundamentals, test equipments and normative integration are represented.

PL

W artykule omówiono metody testowania materiałów i ubrań ochronnych, opracowane i dalej udoskonalane w Saksońskim Instytucie Włókiennictwa (Saxon Textile Research Institute – STFI). Szczegółowo przedyskutowano zagadnienia stosowania trzech metod. Dwie dotyczą zabezpieczenia przed skutkami gromadzenia się ładunków elektrostatycznych.. Są to: indukcyjna metoda zaniku ładunku elektrycznego objęta normą EN 1149-3:2004, jako metoda 2-STFI IDM oraz metoda oceny potencjału elektrostatycznego ciała człowieka i przemieszczania ładunków podczas noszenia odzieży ochronnej; metoda ta związana jest z zastosowaniem specjalnego stanowiska testowego. Trzecia metoda dotyczy ubrań ochronnych, zabezpieczających człowieka przed działaniem łuku elektrycznego i omawia udoskonalenia metod zalecanych w normach europejskich dokonane w STFI.

7

Electrical properties of conductive polymers: pet - nanocomposites’ fibres

Kim B., Koncar V., Devaux E.

Autex Research Journal

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2004

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Vol. 4, no. 1

9--13

EN

Researches in the field of conductive polym ers have attracted considerable attention for more then 20 years. Among the conductive polymers, polyaniline and polypyrrole have drawn considerable interest because of their economical importance, good environmental stability and satisfactory electrical conductivity when doped. On the other hand, electrically conductive materials such as aluminium powder, graphite and carbon nanotubes have very interesting conductive properties and are promising in the synthesis of new composite conductive materials. In almost all studies, conducting polymer films are developed and then electrical and mechanical properties are tested. In our paper, the conducting polymer fibres have been obtained by melt mixing and chemical coating on the fibres. Different conductive materials have been used in order to obtain conductive polypropylene-based fibres with specific electrical and mechanical properties. The electric conductivity and morphol ogical characteristics of these fibres have been investigated and the results are discussed. The originality of our approach lies in our having created conductive fibres based on conductive polymers. These fibres are intended for use in creating conductive yarns and realising connections in smart clothing, or producing conductive fabrics which can be used as electromagnetic shields. These developments have been carried out in order to create new multifunctional textile structures for different applications in the field of intelligent and communication apparel or other similar branches.