流变性是光纤光缆冷填充材料的重要工艺特性。本文研究了在光纤光缆冷填充材料中起增稠和触变作用的气相白炭黑对流变性的影响。研究表明，合适的气相白炭黑及其用量使得光纤光缆冷填充材料具有极好的流变性。同时对改善其品质（析氢、酸度、防水性和透明性等）起着积极的作用。 Rheology is an important process characteristic of cold-filled optical fiber cable materials. This paper studies the rheological properties of fumed silica that thickened and thixotropic in fiber-optic cable cold-fill materials. Studies have shown that the appropriate amount of fumed silica and its amount make the fiber optic cable cold-filled material has excellent rheological properties. At the same time to improve its quality (hydrogen evolution, acidity, water resistance and transparency, etc.) play a positive role.