NOVEL POLYMERS FOR APPLICATIONS AS LINERS

摘要

Polyethylene liners offer a good combination of chemical resistance, installation friendliness, and cost- effectiveness, but their application at higher temperatures is limited, particularly in hydrocarbon service. While polyethylene is the standard for liners for buried carbon steel line pipe in the oil and gas industry, other polymeric liners such as polyamide 11 and polyvinylidene fluoride are standard for flexible pressure pipe in the offshore industry. In addition, the chemical process industry routinely uses fluoropolymer lined steel joints, valves, and elbows for demanding corrosive service. This investigation is an attempt to identify some of the polymeric materials which have been shown to be useful either as liners for non-traditional pipe or as liners for individual fittings and short runs of pipe and examine their utility for long pipeline rehabilitation.