Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

What makes the best possible summer sportswear?

15.02.2016

A recently completed research project at the Hohenstein Institute shows how to make sports textiles with outstanding sun protection and wear comfort , and offers design tips for producers.

As part of a research project on "The total energy transmittance of clothing" (IGF No. 17655 N), the Hohenstein Institute has been researching how the structure of the textile and the length of the garment affect people's thermal comfort in intense sunlight. From their work, the scientists have derived some design tips on how to make sportswear that provides the best possible protection from harmful UV radiation and the heat of the sun, while at the same time being very comfortable to wear. The results give sportswear producers and retailers the opportunity to open up new product segments with this kind of improved garment. For end users, these textiles offer a better way of protecting themselves from skin cancers such as "white skin cancer".


Following evaluation of the laboratory tests, wearing trials were carried out using subjects, to further validate the optimised test samples.

© Hohenstein Institute


The sportswear garments made with long and short sleeves and legs were worn by the thermal manikin "Charlie" and exposed to a specific level of thermal radiation.

© Hohenstein Institute

Current problems with sports textiles in summer

In summer, endurance athletes and people who work mainly outdoors are exposed to direct sunlight for several hours at a time and so they have to protect themselves from harmful UV radiation. Long-sleeved clothing and sun blocking creams do offer some protection from UV radiation, but during intense physical or sporting activity they reduce the dissipation of heat through the skin – and this ultimately affects the wearer's performance. On the other hand, short-sleeved clothing allows sweat to evaporate and so cools the body down, but it offers no protection from either carcinogenic UV radiation or infrared thermal radiation.

Starting point and structure

The aim of the research was to examine systematically the relationship between thermoregulation and sun protection. The innovative concept at the heart of the research project was that the scientists would, for the first time, study the effect of textile construction (fibre material, colour, finishing treatment) on clothing physiology properties, UV protection and IR protection.

In the first step, the researchers selected six different textile base materials in which the main fibres were polyester (PES), polyamide (PA) and Lyocell/polypropylene (CLY/PP). Then, in the next step, these were treated with red and black dyes and three UV protection agents.

The textile samples were tested for their UV protection under UV Standard 801 and for the protection they offered against hot sunshine in accordance with DIN EN 410 (total energy transmittance), and also with regard to their heat and moisture management, with the help of the Hohenstein Skin Model and skin sensorial measuring devices.

In the next step, the samples that were particularly good at thermoregulation were made into shirts and trousers with sleeves and legs of different lengths. Then these garments, worn by a thermal manikin, were exposed to a specific amount of heat radiation to simulate warming by the sun - which varied depending on the length of the garment. Finally, following evaluation of the laboratory tests, wearing trials were carried out using volunteers, to further validate the best test samples.

Results: how to make the best possible summer sportswear

It emerged that the ideal blend of fibres should consist of CLY/PP/PA, because fabrics made of CLY/PP are very comfortable to wear and, when combined with PA fibres, also offer a high degree of UV protection. Dyeing the textiles red or black significantly increased the UV protection compared with the white samples, and proved to be more effective than applying the chosen UV-protection agents to the textile.

At the same time, less heat passes through the red and black textiles, but this is at the cost of more heat being absorbed by the textile. In summer and in direct sunshine, sportsmen and -women should opt for loose clothing, because this means the heat that is absorbed is not transmitted straight on to the skin.

Long-sleeved clothing offers better UV protection than short sleeves, because more of the body is covered. However, since the arms are more exposed to the sun than the legs, ideally you should combine long-sleeved sports tops with shorts.

To find out more information about this research project and view the detailed research report, please contact the project manager, sports engineer Martin Harnisch (m.harnisch@hohenstein.de).

Weitere Informationen:

http://www.hohenstein.de/en/inline/pressrelease_123136.xhtml

Marianna Diener | idw - Informationsdienst Wissenschaft

More articles from Materials Sciences:

nachricht Glass's off-kilter harmonies
18.01.2017 | University of Texas at Austin, Texas Advanced Computing Center

nachricht Explaining how 2-D materials break at the atomic level
18.01.2017 | Institute for Basic Science

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

A big nano boost for solar cells

18.01.2017 | Power and Electrical Engineering

Glass's off-kilter harmonies

18.01.2017 | Materials Sciences

Toward a 'smart' patch that automatically delivers insulin when needed

18.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>