本文介绍了一种新的双层多用途光纤一次被覆.这种新的被覆可以用于常用的松套管光缆以及带状光缆之类更需要紧凑的光缆结构中.随着光纤进入本地环路,要求光纤更能适应水、高湿度和高温之类苛刻的环境.由于在内层一次被覆中采用了酸性增粘剂,所以这种被覆层具有优异的抗老化性能和较高的机械性能. This article describes a new double-layer multipurpose fiber primary coating that can be used in the more compact fiber optic cable structures of commonly used loose-tube and ribbon cables. As the fiber enters the local loop , Which requires that the optical fiber be better suited to harsh environments such as water, high humidity and high temperature, etc. This coating has excellent anti-aging properties and high mechanical properties due to the use of an acid tackifier in the primary coating of the inner layer.