Water blocking yarn
SIBER Water Blocking Yarns are used in optical,copper telephone,data cable and power cable as cable components.Yarns are used as fillers in power cables to provide a primary pressure block and to prevent water ingress and migration in fiber optical cables.When water enters into a cable protected by water blocking yarns,the super-absorbent component within the yarn instantly forms a water blocking gel.The yarn will swell to approximately three times as its dry size.
Specification of Water Blocking Yarn
| Item | Denier | Linear Density | Swelling Speed | Swelling Capacity | Tensile Strength | Elongation at Break | Moisture Content | |
| D | m/kg | ml/g/1min | ml/g | N | % （Min） | % （Max） | ||
| ZS-1.0 | 9000 | 1000 | 50 | 60 | 250 | 10 | 8 | |
| ZS-2.0 | 4500 | 2000 | 45 | 60 | 150 | 10 | 8 | |
| ZS-3.0 | 3000 | 3000 | 45 | 50 | 100 | 10 | 8 | |
| ZS-4.5 | 2000 | 4500 | 40 | 50 | 70 | 10 | 8 | |
| ZS-5.0 | 1800 | 5000 | 35 | 45 | 60 | 10 | 8 | |
| ZS-6.0 | 1500 | 6000 | 30 | 40 | 50 | 10 | 8 | |
| ZS-10.0 | 900 | 10,000 | 20 | 30 | 20 | 10 | 8 | |
Aramid fibers are a class of heat resistant and strong synthetic fibers. They are used in aerospace and military applications, for ballistic rated body armor fabric and ballistic composites, in bicycle tires, and as an asbestos substitute. They are fibers in which the chain molecules are highly oriented along the fiber axis, so the strength of the chemical bond can be exploited.
| Properties |
| 1.good resistance to abrasion |
| 2.good resistance to organic solvents |
| 3.nonconductive |
| 4.no melting point, degradation starts from 500°C |
| 5.low flammability |
| 6.good fabric integrity at elevated temperatures |
| 7.sensitive to acids and salts |
| 8.sensitive to ultravioletradiation |
| Industrial Uses |
| 1.flame-resistant clothing |
| 2.heat protective clothing and helmets |
| 3.body armor, competing with PE based fiber products such as Dyneema and Spectra |
| 4.composite materials |
| 5.asbestos replacement |
| 6.hot air filtrationfabrics |
| 7.tires, newly as Sulfron |
| 8.mechanical rubber goods reinforcement |
| 9.ropes and cables |
| 10.wicks for fire dancing |
| 11.optical fiber cable systems |
| 12.sailcloth (not necessarily racing boat sails) |
| 13.sporting goods |
| 14.drumheads |
| 15.wind instrument reeds, such as the Fibracell brand |
| 16.loudspeaker diaphragms |
| 17.boathull material |
| 18.fiber reinforced concrete |
| 19.tennis strings, snowboards and hockey sticks |