What is the difference between all-dry outdoor optical cable and traditional oil-filled optical cable?

All-dry optical cable refers to the use of water-blocking yarn in loose tube, and dry water-blocking substances such as water-blocking powder and water-blocking tape in the gap between cable cores to meet the water-blocking requirements. Generally speaking, all-dry optical cable has no gel.

Water-blocking tape and water-blocking yarn are dry water-soluble swelling materials. Compared with ointment, they have the advantages of light weight, convenient optical cable connection, no need to clean ointment and good compatibility with other materials. Its working principle is that when moisture enters the optical cable and comes into contact with the water-absorbing resin of the water-blocking material, the water-absorbing resin expands rapidly, filling all gaps in the optical cable, thus preventing moisture from flowing in the optical cable. The fine water-blocking yarn in loose tube has the characteristics of high water absorption expansion rate, which plays a double-layer water-blocking and moisture-proof effect.

In addition, the all-dry glass fiber protection optical cable is a water-absorbing and swelling material coated on glass fiber yarn. High strength glass fiber yarn can be used as the tensile reinforcement part of optical cable; At the same time, due to the extremely fine and brittle material characteristics, the broken glass slag will hurt the mouse's mouth during the biting process, thus achieving the effect of waterproofing and preventing the mouse from biting.

All-dry outdoor optical cable overcomes all kinds of shortcomings of oil-filled optical cable and maintains excellent water resistance.