Application of polymeric nanocomposites and carbon fiber composites in the production of natural gas reservoirs

Abstract

This research work is about the experimental analysis of the mechanical behavior of reservoirs for storage of compressed natural gas (CNG) consisting of a nanopolymeric liner coated with carbon fiber preimpregnated with epoxy resin applied by filament winding (FW). It addresses technical solutions adopted to optimize the reservoir as reinforcement with fiber, the process of healing and thermal analysis, as well as the hydrostatic testing to verify its resistance to the pressure required for CNG storage. Different nanoclayswere incorporated to the polymer aiming to increase the strength of the liner and to reduce the thickness of its wall and the final weight of the reservoir as well as decreasing gas permeability. The obtained results were the basis for proposing an adaptation of the equation traditionally used for the dimensioning of the wall thickness ofmetallic pressure vessels to determine the number of layers needed to endure any internal pressure to which the reservoir is subjected.They indicate that the used methodology enables the production of pressure vessels for the storage of CNG, according to the ISO 11439:2013 Standard.