Anisotropic cable sealing gels; and methods for fabricating cable sealing gels
Aspects and techniques of the present disclosure relate to a cable sealing structure comprising a cable sealing body including a gel and methods of making anisotropic behavior in cable sealing structures made with a dry silicone gel. In one aspect, various three-dimensional printing techniques are used to make a cable sealing structure that includes a gel. The cable sealing body has a construction that elastically deforms to apply an elastic spring load to the gel. The cable sealing body has a construction with anisotropic deformation characteristics that allows the cable sealing body to be less deformable in one direction than in others. The cable sealing structure can be utilized to seal fiber optic cables more uniformly while limiting the potential of leakage.
1. A cable sealing structure comprising:
first and second cable sealing bodies that meet at a cable sealing interface, the first and second cable sealing bodies each including a gel; and
the first and second cable sealing bodies each including at least one reinforcing structure embedded in the gel of each of the first and second cable sealing bodies;
wherein as the cable sealing structure is deformed to form a seal about a cable at the cable sealing interface, the at least one reinforcing structure of each of the first and second cable sealing bodies elastically deforms to apply an elastic load to each of the first and second cable sealing bodies;
wherein the first and second cable sealing bodies each include an x-dimension that extends along an x-axis, a y-dimension that extends along a y-axis, and a z-dimension that extends along a z-axis, wherein the z-axis corresponds to a cable pass-through direction through the cable sealing interface, and wherein the first and second cable sealing bodies are each less deformable along the z-axis as compared to both the x and y axes; and
wherein the at least one reinforcing structure of each of the first and second cable sealing bodies is a preform three-dimensional structure that is embedded into the gel of the first and second cable sealing bodies, the preform three-dimensional structure providing a self-supporting shape of the cable sealing structure.
2. The cable sealing structure of claim 1 , wherein the at least one reinforcing structure is configured to rebound to its pre-deformed shape.
3. The cable sealing structure of claim 1 , wherein the first and second cable sealing bodies have anisotropic deformation characteristics.
4. The cable sealing structure of claim 1 , wherein the at least one reinforcing structure is oriented and positioned in the first and second cable sealing bodies such that the first and second cable sealing bodies are each more deformable along the x-axis as compared to the y and z axes.
5. The cable sealing structure of claim 1 , wherein each of the first and second cable sealing bodies includes a plurality of separately discrete reinforcing structures.
6. The cable sealing structure of claim 5 , wherein the plurality of separately discrete reinforcing structures are generally aligned along the z-axis.
7. The cable sealing structure of claim 1 , wherein the at least one reinforcing structure is embedded into each of the first and second cable sealing bodies such that the at least one reinforcing structure has a shape that is generally zig-zag.