Piping for transporting oil or gas, method for extending the useful life of a barrier layer of polyamide in a pipeline to transport oil or gas.Method for rejuvenating a barrier layer of Polyamide Used in a pipeline to transport oil or gas, and method for prolonging the life expectancy of a material of polyamide

摘要

"Pipe for transporting oil or gas, method for extending the useful life of a barrier layer of polyamide in a pipe to the Pope the transport of oil or gas.Method for rejuvenating a barrier layer of Polyamide Used in a pipeline to transport oil and gas.And the method to prolong the life expectancy of a material of polyamide.The coating of Polyamide Used in transport submarines or land, such as nylon 11.Are manipulated in such a way that increase the rate of recombination in the chain on the process of fission chain competent.This improves and increases the useful life of a polyamide coating effectively reduced their rate of aging.This can be achieved by incorporation of a chain extender or a desiccant in the interior of the polyamide coating.Incorporating the halves or hydrophobic hydrophobic polymers in the interior of the polyamide coating.Or the proportion of a sheath which is less permeable to water at the inner surface of the polyamide coating.The rejuvenation of the polyamide coating can also be achieved by the heat treatment of the Polyamide Coating by heated air, oil or gas heated.Or other heated liquids which are at a temperature above 100 198 C.The rejuvenation can be improved by the inclusion of a chain extender or a desiccant to an oil, gas or liquid is heated which is exposed to the polyamide coating.