Water-blocking filling paste for optical cable

A water-blocking filling and optical cable technology, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of not achieving the expected effect, and achieve the effect of super water absorption capacity

Inactive Publication Date: 2010-02-10
SHANGHAI HONGHUI OPTICS COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, many commercially available optical cables also include a water blocking tape (intumescent type), which is used to prevent water from entering the core along the closed end of the optical cable through the sheath, generally Said that this water-blocking tape is a layered structure, including water-blocking swelling powder between two layers of polyester tape, and this structure often does not achieve the desired effect over time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 4 grams of oil separation inhibitor and 0.5 grams of pour point depressant to 75 grams of base oil, heat for 5-6 hours to 180 ° C, add 0.5 grams of antioxidant, stir thoroughly for 0.5 to 1 hour, and then cool down to 50 Below ℃, add 6 grams of thickener, then add 4 grams of dispersant, and stir thoroughly to obtain a semi-fluid intermediate. After homogenization, add 3 grams of superabsorbent and 7 grams of water blocking agent, homogenize, vacuum Air is removed from the product and the final product is a paste mixture.

Embodiment 2

[0026] Add 6 grams of oil separation inhibitor and 0.6 grams of pour point depressant to 70 grams of base oil, heat for 5-6 hours to reach 180 ° C, add 0.4 grams of antioxidant, stir thoroughly for 0.5 to 1 hour, and then cool down to 50 Below ℃, add 6 grams of thickener, then add 1 gram of dispersant, stir well to obtain a semi-fluid intermediate, after homogenization, add 6 grams of superabsorbent and 10 grams of water blocking agent, homogeneous, vacuum Air is removed from the product and the final product is a paste mixture.

[0027] The water-blocking filling paste for optical cables of the present invention is mainly used for filling between the sheath of the optical cable and the core of the cable to prevent water from affecting the optical cable, and has the characteristics of temperature resistance and salt water resistance and super water absorption capacity.

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PUM

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Abstract

The invention relates to a water-blocking filling paste for an optical cable, which mainly comprises the following components: base oil, an oil separation inhibitor, a thickening agent, a super absorbent, a water blocking agent, a dispersant, an antioxidant and a pour depressant, and has the characteristics of temperature resistance, salt water resistance, and ultra strong water absorption power.

Description

technical field [0001] The invention relates to a water-blocking mixture, in particular to a water-blocking filling paste for optical cables. Background technique [0002] It is well known in the optical cable industry that changes in the ambient environment can create an air pressure differential between the inside and outside of the plastic jacket tube. This often results in undirected diffusion of moisture from the outside of the fiber optic cable to the inside, which eventually leads to undesirably high humidity inside the fiber optic cable, especially in conditions where the plastic jacket acts as the only barrier to moisture ingress . High humidity inside the optical cable sheath may have a detrimental effect on the transmission characteristics of the optical cable. [0003] Also, water may enter the optical cable due to damage to the optical cable. For example, light or mechanical impact can cause cracks in the sheath of the optical cable, allowing water to enter i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/288C09K3/00
Inventor 沈江波
Owner SHANGHAI HONGHUI OPTICS COMM TECH
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