The current extensively development of electrical devices and telecommunication requires adequate solutions for ensuring electromagnetic compatibility (EMC). One of the main solutions provided by EMC is the shielding against electromagnetic (EM) radiation. Conventional screens for EM radiation are constructed from metallic plates, however, fabrics with conductive yarns may be used as well, with multiple advantages: lightweight, flexibility, mechanical resistance and 3D shape ability. The paper addresses the shielding of the electromagnetic near field, by proposing an analytic relation taking into account both geometrical and electrical parameters of the fabric, based on the circuit method. A validation study was performed, by measuring the shielding effectiveness of an enclosure with a cover from woven fabrics with conductive yarns. The experimental setup includes both the electrical measurement devices, as well as a set of five woven fabrics with conductive yarns from stainless steel and silver. The experimental results for the electromagnetic near field frequency range (1–20 MHz) present values in good relationship to the analytic relation. The simplified analytic relation allows the computing of the distance between the conductive yarns of the woven fabric in relation to the targeted shielding effectiveness. This relation supports the design process of a fabric, with balance between its costs and its target shielding effectiveness.
We investigated the potential of atmospheric plasma technology to enhance the properties of textile material against flame propagation before and after washing. The effects of this treatment on the rigidification of the media were also determined using draping and bending stiffness tests. We showed that deposing Silicone molecules on cotton fabrics leads to flame retardant cotton with a conservation of the whole structure after burning. Moreover, washing of the sample evidenced high permanency of the thin grafted coating against chemical domestic washing detergent. Nevertheless, comfort properties of the textile decrease, which limits the applications of the plasma eco-friendly technology in the clothing industry.
Analiza comparativă a proprietăților firelor Siro cu filare compactă pneumatică și cu inele 245-249 GUIZHEN KE, JIAFENG PEI, KUNDI ZHU Prepararea și proprietățile materialelor compozite PAN/LA-SA realizate prin electrofilare 250-255 SHU-QIANG LIU, GAI-HONG WU, YI CUI, HONG-XIA GUO Analiza mecanismului de finisare rezistentă la contracție asupra țesăturii de mătase/cânepă 256-262 ASIF ELAHI MANGAT, LUBOS HES, VLADIMIR BAJZIK, FUNDA BUYUK, MUDASSAR ABBAS Modelul absorbției termice a tricotului patent în stare uscată și autentificarea experimentală a acestuia 263-268 DANIELA NEGRU, LILIANA BUHU, EMIL LOGHIN, IONUT DULGHERIU, ADRIAN BUHU Absorbția și transferul de umiditate prin materiale tricotate din fibre naturale și artificiale 269-274 TÜLAY GÜLÜMSER Rolul microcapsulelor în mascarea mirosurilor neplăcute ale țesăturilor de bumbac 275
: A new structural concept was developed for e-learning educational materials meant for improving innovation in textile field. The educational materials were composed of 35 new project solutions offered by five research providers in textiles. The project solutions resulted as need of the textile industry, identified by a SWOT analysis of a Benchmarking study with 64 enterprises on European level. The connections between the Opportunities from the SWOT analysis and the project solutions was included in a cluster table. The new e-learning concept was developed with Moodle resources and activities, in order to comply with the structure of the educational materials. Thus, within the logical approach, hyperlinks were provided between project solutions and the cluster table, while the cluster table Opportunities was linked to the SWOT analysis. Nonetheless, project solutions may be accessed in sequential approach, by Moodle activity Glossary. The attractive e-learning course was completed by three modules on innovation in Book resource format, multiple choice questions and Youtube videos with interviews of the project's research providers. The work on the educational materials and the new e-learning concept was developed within the Erasmus+ project TexMatrix - "Matrix of knowledge for innovation and competitiveness in textile enterprises" (2016-2018), having five experienced partners: INCDTP - Bucharest (coordinator), TecMinho - Portugal, Centrocot - Italy, University Maribor - Slovenia and Technical University Iasi. The Benchmarking questionnaire was leveraged by the management instrument of the Knowledge Matrix for Innovation, commonly prepared by the partners for textile enterprise's end-users. The project had an outstanding impact with 199 textile professionals and 137 young trainees prepared within multiplier events and blended courses. The English e-learning course may be accessed by Guests on www.advan2tex.eu/portal .
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