| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe which has an exterior reinforcement layer and a multilayer inliner, and in which a polyamide layer and a polyolefin layer or fluoropolymer layer adhere securely to one another, and in which this secure adhesion is substantially retained during operation.SOLUTION: A pipe or pipeline comprises: a) an external reinforcement layer and b) an internal liner which comprises a layer I and a layer II that adhere securely to one another. The layer I is made of a thermoplastic molding composition selected from a polyolefin molding composition and a fluoropolymer molding composition, and the layer II is made of a polyamide molding composition. Neither the polyamide molding composition nor the molding composition of the layer I substantially comprises a blend component which is composed of another polymer and which is dispersedly distributed in the molding composition. In oil and gas industry, the pipe is used for mining, collecting, and transportation, is improved in operation safety, and is prolonged in life. |
