一、产品介绍 （Product Introduction）
光、电缆用阻水纱采用涤纶工业长丝与交联聚丙烯酸类膨胀材料复合而成，具有吸水速度快、膨胀倍率高、抗张力强、不含酸碱、对线缆不产生相容性影响、耐热性及化学稳定性、无腐蚀性等优点。在光缆制造过程中可省去填充油膏、阻水带、扎纱等材料。阻水纱使用方便，工艺简单，结构稳定，阻水可靠，环境清洁，不产生油性污染。主要适用于防水型通信电缆，干式光缆的缆芯包扎，交联聚乙烯绝缘电力电缆，尤其对海底光电缆使用阻水纱更为理想。
Advantages:
high speed of absorbing, good expansion rate, high tensile strength, no acid-base, affection of compatibility for cables, heat resistance, chemistry stability, non-corrosiveness etc.
Usage:
In production of optic cable, it could be used instead of water blocking tape and water blocking factice etc. It’s used in water-proof communicate cables, optic cables, power cable, especially undersea optic cable. It could avoid moisture permeating through cables.
二、技术指标 (Technical Indicator)
| 性能 Property | 单位 Unit | 阻水纱 Water blocking yarn | |||||||
纤度Size | D | 1500 | 2000 | 2500 | 3000 | 4500 | 6000 | 9000 | 18000 |
拉伸强度Tensile strength | N | ≥50 | ≥60 | ≥70 | ≥100 | ≥150 | ≥200 | ≥250 | ≥300 |
断裂伸长率Elongation at break | ％ | ≥15 | ≥15 | ≥15 | ≥15 | ≥15 | ≥15 | ≥15 | ≥15 |
膨胀速度Swelling speed | ml/g/1st min | ≥60 | ≥60 | ≥60 | ≥60 | ≥55 | ≥50 | ≥45 | ≥40 |
膨胀率Expansion rate | ml/g | ≥65 | ≥65 | ≥65 | ≥65 | ≥65 | ≥55 | ≥50 | ≥50 |
含水率Water content(150℃、1 min) | ％ | ≤9 | ≤9 | ≤9 | ≤9 | ≤9 | ≤9 | ≤9 | ≤9 |