[비의류제품] Investigation of the Water Repellence of Different Experimental and Commercial Coatings for Synthetic Mountaineering Ropes 출판일 : 2008.10.01 저자 : A.B. Spierings, A. Ritter, O. Henkel, U. Holzdoerfer 서지사항 : Textile Research Journal, Volume 78, Issue 10, 886 페이지 등록일 : 2011.08.01 I 조회수 : 289 작성자 : admin |
All manufacturers of synthetic mountaineering ropes provide chemically coated ropes in
order to reduce their water uptake in a wet environment. As common static test methods for
the investigation of the water repellent behavior of ropes do not move or bend the ropes, the
measured water uptakes are usually below about 10%. In this study we have investigated
the water uptake of coated ropes under conditions that are closer to practice conditions
than all other methods. Our results show that commercially coated ropes provide a sufficient
water repellent behavior as long as the ropes are not in practical use with, for example,
carabiners. As soon as the ropes sustain a practical use, the water is worked through the
sheath into the core of the ropes so that the water uptake is comparable to the values of
uncoated ropes. As a result, the safety performance is decreased both in terms of the
number of drops sustained and the impact load. Furthermore, we have investigated
experimental coatings and found one chemical (a wax-based coating) and one physical
(plastic tape between the sheath and the core of the rope) coating, which were both able to
reduce the water uptake even in dynamic conditions.
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