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FIBRE ROPE
POLYETHYLENE › Low in strength compared with other synthetic fibre rope › Identical with polypropylene in appearance but somewhat more slippery › Softens progressively with a rise in temperature › Resistant to strong and weak acids and alkalis (excepting nitric acid) › Resistant to alcohol and bleaching solutions › Floats on water and its tensile strength remains the same dry or wet › Not damaged by ultraviolet effects, doesn’t need to be dyed › Most commonly found in small diameters. e.g. as a water-ski towline › It is slightly heavier than polypropylene rope
› Has a lower breaking strength when compared to a high tenacity Polypropylene rope such as Superdan › Is sensitive to Xylene at 93°C deteriorates on very long exposure to sunlight or heat, hot nitric or sulphuric acids › Has resistance to most acids, alkalis, grease oil, organic solvent and water
MECHANICAL PROPERTIES: › Specific gravity: 0.93 g/cm3 (Float on water) › Melting point: 135°C › Resistance to short term Heat: 70°C › Tensile Strength of Polyethylene: Approx 40 kg/mm2 › Elongation at break points: 20-24% › Ultra Violet (UV) resistance: Fair › Resistance to Alkalis: Excellent › Resistance to Acids: Excellent (excepting nitric acid)
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MATERIALS HANDLING TECHNICAL MANUAL | VOL. 4
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