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 Decoding cement's shape promises greener concrete
08.12.2016 | Rice University

nachricht Scientists track chemical and structural evolution of catalytic nanoparticles in 3-D
08.12.2016 | DOE/Brookhaven National Laboratory

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Closing the carbon loop

08.12.2016 | Life Sciences

Applicability of dynamic facilitation theory to binary hard disk systems

08.12.2016 | Physics and Astronomy

Scientists track chemical and structural evolution of catalytic nanoparticles in 3-D

08.12.2016 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>