4466 research outputs found
Sort by
A self-healing system for the soles of all rubber protective footwear
No full textThe objective of work was to improve the safety performance of protective footwear by increasing its
service time using next-generation polymeric materials featuring autonomous self-healing mechanisms
capable of repairing mechanical defects in a sole structure without an external intervention. The project
innovation consists of using autonomous self-healing mechanisms in protective footwear to increase its
service time and improve its safety performance in the workplace. Some mechanical defects naturally
occur in the structure of personal protective equipment in the course of its normal use. While initially
those defects are often not visible and difficult to detect, they may compromise polymeric materials and
over time lead to permanent damage and shorter service times. The applied autonomous self-healing
mechanisms (ASMs) have the capacity of immediate material regeneration without the external
intervention. The first ASM involves a micro-encapsulated monomer released in the case of damage to
fill the resulting defect in the sole. The other ASM involves the implementation of a network of channels
supplying the monomer to the damaged area
Termowizja jako ocena sposobu wykorzystania metody NIR w celu poprawy jakości wyrobów haftowanych
No full textMiędzynarodowy Turniej w Podnoszeniu Ciężarów dla Osób z Niepełnosprawnościami „LIFT for HEALTH”
No full text
Zarządzanie informacją naukową
No full textArtykuł zamieszczony jest w : Życie Uczelni : biuletyn informacyjny Politechniki Łódzkiej, nr 159, Luty 2022Biblioteka akademicka wspomaga dydaktykę i badania naukowe, udostępniając
literaturę oraz uczestnicząc w procesie kształcenia. Od tego roku został
wprowadzony obowiązkowy przedmiot „Zarządzanie informacją naukową”
Textile ballistic shields with embroidered structure
No full textTextile ballistic shields are the basis of protection against bullets and fragments with low kinetic energy.
They are usually made of para-aramid fabrics or UD sheets of HPPE. The aim of the research presented
in this article was to obtain ballistic packages made of embroidered structures and to compare their
ballistic properties with those of woven structures, in terms of deformation of the standardised ballistic
substrate after impact with a 9 mm bullet at a velocity of 380±3 m/s. The embroidered structures were
made by embroidering two sets of para-aramid threads at an angle of 90°. As with the woven structures,
the use of para-aramid fabric made of the same yarn and with a surface weight comparable to that of an
embroidered structure, was adopted. The ballistic packages consisted of 26 layers in five variants, taking
into account the hybrid arrangement of woven and embroidered layers. Ballistic tests have shown that
the best ballistic properties have hybrid packages made by folding 13 woven and then 13 embroidered
layers, where the maximum deformation of the plasticine substrate was below 23 mm. The conducted
research confirmed that embroidered structures can significantly improve the ballistic properties of
textile packages when appropriately combined with woven structures
Pedagogiczna rola asystenta dydaktycznego studentów z niepełnosprawnościami w uczelni wyższej
No full textMedaliści zimowego pływania
No full textArtykuł zamieszczony jest w : Życie Uczelni : biuletyn informacyjny Politechniki Łódzkiej, nr 159, Luty 2022Studenci Politechniki Łódzkiej – Aleksandra Bednarek i Tomasz Józefiak reprezentowali
Polskę na czwartych Mistrzostwach Świata w Pływaniu Lodowym.
Z zawodów wrócili z medalami
Wool finishing for washable worsted man’s jacket
No full textThe aim of this study is to functionalize a 100% worsted wool fabric for use as washable suit jackets in
a household washing machine (Samsung) with the wool/delicate cycle. In fact, it is highly recommended
to wash worsted suit jackets by dry cleaning in order to avoid garment shrinkage when washing. Wool
is known for its shrinking properties which make it difficult to wash with water.
Varying chemical finishing were applied on woven worsted fabric. The aim of this finishing was to
avoid both, felting shrinkage caused by the entanglement of fibres and fabric shrinkage due to fibre
release strains and stresses introduced during processing, and hence improve its dimensional stability
during domestic washing. A men jacket stitched with the chemically treated fabric was worn 5 times a
week before being subjected to washing. Overall, 5 domestic washing were performed. And the fabric
was analysed before and after the washings. Excellent dimensional stability was obtained without any
sign of physical degradation as observed by SEM. This could be explained by the good adhesion of the
fibre finish coating which resist to strains of wash and wear. Physical and chemical analysis using Zeta
potential measurement would suggest that padding with a mixture of polycation (polyurethane based
resin) and poly anion (polysiloxane-based resin) will help improving coating adhesion and hence its
resistance to wash and wear
Similarities and differences of lithuanian and western ukrainian folk towels
No full textCognition of unique historical-cultural heritage is very important for each country. It not only enables
to identify itself as unique unit, but also to separate itself in the context of the world. One of the values
of tangible heritage is folk textile, the geographic, folk and historical-political aspects of which decide
its uniqueness and distinctiveness