Catalogo Marlow

FIBRE STRENGTH MODULUS ELONGATION SPECIFIC GRAVITY MELTING POINT °C CRITICAL TEMPERATURE °C CREEP PERFORMANCE CHEMICAL RESISTANCE UV RESISTANCE G/DEN GPA G/DEN GPA DYNEEMA® SK99 (UHMWPE) 48 4.1 1800 132 3.6 0.975 144-152 80 GOOD EXCELLENT VERY GOOD DYNEEMA® SK90 (UHMWPE) 44.7 3.8 1625 140 3.5 O.975 144-152 80 GOOD EXCELLENT VERY GOOD DYNEEMA® SK78 (UHMWPE) 40 3.4 1267 110 3.5 0.975 144-152 80 GOOD EXCELLENT VERY GOOD DYNEEMA® DM20 (UHMWPE) 35 3 1042 90 3.6 0.975 144-152 80 VERY GOOD EXCELLENT VERY GOOD ZYLON® TYPE HM (PBO) 42 5.8 1948 270 2.5 1.56 650 N/A VERY GOOD FAIR POOR ZYLON® TYPE AS (PBO) 42 5.8 1302 180 3.5 1.54 650 N/A VERY GOOD FAIR POOR ZYEX® (PEEK) 6.5 - - - 30 1.3 334 250 N/A VERY GOOD VERY GOOD TEFLON® (PTFE) 2 0.36 13 - 8.5 2.1 310 288 N/A EXCELLENT EXCELLENT TECHNORA® (PARA-ARAMID) 27 3.4 590 73 4.5 1.39 500 N/A VERY GOOD FAIR FAIR TWARON® (PARA-ARAMID PPTA) 23 2.9 600 78 3.55 1.44 450 N/A VERY GOOD FAIR FAIR VECTRAN® (LCP) 25.9 3.2 600 75 3.8 1.41 350 N/A EXCELLENT GOOD GOOD POLYESTER 9.5 1.13 125 15 12.5 1.38 260 N/A GOOD AFFECTED BY ALKALIS VERY GOOD POLYAMIDE (NYLON 6) 8.7 0.96 80 8 24 1.14 220 N/A GOOD AFFECTED BY ALKALIS GOOD GRAND PRIX SERIES T he interaction between core, cover and deck gear are fundamental elements of a rope’s performance. The Grand Prix Series blends technical materials to impart application specific properties to the cover. The properties of different materials will have a varying impact on the interaction between rope & deck gear, by blending different materials in different ratios we are able to best utilize these material properties to produce the perfect rope performance. The data on page 13 details our standard blend covers & their relative performance in terms of abrasion resistance, load holding capability & winch easing. Grand Prix Series covers can be specifically and uniquely customised to particular requirements using different material blend ratios and blends of 3 or even 4 materials. COVER CONSTRUCTIONS All Grand Prix Series ropes are fully customisable. Different cover constructions have different properties and performance characteristics. 24 plait – thicker cover, offers excellent grip, good durability and flexibility. Easy to splice with all core configurations and is the standard cover construction for most running rigging applications 32 plait – thinner cover, smooth running through blocks and sheaves. Often used when a larger core is needed for strength without increasing diameter, but is more technical and time consuming to splice than 24 plait. 48 plait – very thin cover, very smooth and easily expandable. Normally made with Dyneema ® offering outstanding resistance to abrasion so used for chafe gear and covers for loops and lashings. Also used for standing rigging overbraids. COVER TECHNOLOGY CORE COVER MATRIX STANDARD MARLOW CORE TO COVER RATIOS COVERED ROPE DIAMETER (mm) 6 7 8 9 10 11 12 14 16 CORE DIAMETER (mm) 4 5 6 6.5 7 8 9 10 12 COVERED ROPE DIAMETER (mm) 18 20 22 24 26 28 CORE DIAMETER (mm) 13 15 16 18 19 20 1400 1600 CYCLES TO BREAK ABRASION RESISTANCE TEST PERFORMED AROUND 2” HEAVILY GNARLED BAR D2 RACING (24 PLAIT PES) MGP TECH 50 MGP NOMEX 50 MGP RUNNERTAIL 75 MGP PBO 100 MGP VECTRAN 50 MGP PBO 50 MGP D TECH 50 MGP DYNEEMA 50 1000 0 800 600 400 200 1200 LOAD HELD IN CLUTCH/JAMMER LOAD HELD (kg) MGP DYNEEMA 50 MGP D TECH 50 MGP M TECH 50 MGP M-GRIP 50 MGP PBO 50 MGB PBO 100 MGP NOMEX 50 MGP TECH 50 0 500 1000 2500 3000 1500 2000 MGP RACING (32 PLAIT) MGP VECTRAN 50 MGP RACING (24 PLAIT) 12