Cold application water-blocking type optical power cable filling past and production method thereof

Abstract

The invention discloses a cold application water-blocking type optical power cable filling past. The filling past comprises the following components in weight percentage: 70% to 80% of base oil; 2% to 5% of emulsifier; 5% to 10% of super absorbent polymer; 3% to 10% of thickener; 0.2% to 1% of antioxidant; and 0.2% to 0.8% of dispersant. The invention further provides a production method of the filling paste. The production method includes the following steps that: base oil is heated to 60 DEG C to 100 DEG C, a proper amount of an antioxidant, an emulsifier and a water resistance agent are added to the base oil, and an obtained liquid is fully stirred for 5 hours to 6 hours, and the liquid is completely emulsified, the liquid is fast cooled to room temperature through cooling equipment; a thickener and a dispersant are added into the liquid, and an obtained mixture is stirred uniformly for 0.5 hours to 1 hours; and polymer water-absorbent resin is added into the mixture, and a newly obtained mixture is stirred uniformly, air bubbles in the mixture are extracted through a vacuum pump, after air pumping, emptying is carried out. The filling paste produced by the production method of the invention has the advantages of good water resistance and lower production cost.

Description

technical field [0001] The invention relates to a filling material for an optical cable, in particular to a cold application water-blocking optical cable filling paste and a manufacturing method thereof. Background technique [0002] In recent years, with the continuous development and application of communication electrical (optical) cables, their long-term reliability has been paid more and more attention. During the long-term use of electrical (optical) cables, due to the erosion of moisture and moisture, It leads to the decline of transmission performance and affects normal use. People's research in this area has gone through the first generation of inflation maintenance to the second generation of hot filling grease, and finally to the use of the third generation of cold filling grease. It is an important link in the production of electric (optical) cables, and its performance index directly affects the quality of the cable. For example, the oil separation of the fillin...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the continuous development and application of communication electrical (optical) cables, their long-term reliability has been paid more and more attention. During the long-term use of electrical (optical) cables, due to the erosion of moisture and moisture, It leads to the decline of transmission performance and affects normal use. People's research in this area has gone through the first generation of inflation maintenance to the second generation of hot filling grease, and finally to the use of the third generation of cold filling grease. It is an important link in the production of electric (optical) cables, and its performance index directly affects the quality of the cable. For example, the oil separation of the filling paste is to assess the amount of oil separated from the filling paste at a certain temperature. If the oil separation is too large, The oil is easy to drip from the cable core during use; since the filling paste contains many acidic components, if the acidity is too high, it will affect the surrounding materials, such as oxidation, corrosion, etc.; the charging performance of the filling paste molecules directly It affects the electrical conductivity of the cable; the viscosity should have a shear thinning function, that is, the viscosity of the filling paste decreases with the increase of the shear rate. Generally, the viscosity is neither too large nor too small, because during processing During the process, it is hoped that the viscosity is small so that it can be easily filled into the cable core, but if the viscosity is too small, the filling paste will be easily lost during processing, and it will not be able to play a buffering role when the cable core is stressed, and if the viscosity is too high, it will affect the cable core. Free to expand and contract, easy to produce stress concentration, resulting in bending loss, so the filling pastes on the market currently are mixed.