High-property polyurethane nanometer composite flexible pipe and preparation method thereof

Abstract

The invention provides a high-property polyurethane nanometer composite flexible pipe and a preparation method thereof. The high-property polyurethane nanometer composite flexible pipe is prepared by the following steps of using a composite fiber strip with diameter of 40 to 60cm as a reinforcing layer, using a thermoplastic polyurethane monomer, a modified silicon and cerium nanometer material, rosin resin and epoxy resin as an inner layer and an outer layer, and performing the primary extrusion and forming. The high-property polyurethane nanometer composite flexible pipe has the advantages that a sandwich structure is formed; the composite fiber strip blank is weaved and modified by a circular weaving machine through using aramid fiber as warp yarns, and using aramid fiber and carbon fiber as weft yarns, the modified silicon and cerium nanometer material is prepared by using gamma-glycidoxy propyl trimethoxy silane to activate the surface of the silicon and cerium nanometer material, the silicon and cerium nanometer material has a three-layer core and shell structure, the inner core is of nanometer silicon dioxide, the middle layer is of nanometer cerium dioxide, and the outermost shell is of nanometer titanium dioxide; the compressive strength is 5.2 to 6.4MPa, the stripping strength is 130 to 155N / 25mm, and the change rate of stripping strength is 2% to 5%; the compressive strength is high, the anti-aging property is excellent, the stripping strength is high, and the like; the processing technology is simple and convenient; the composite flexible pipe is mainly used for the transportation of marine petroleum, natural gas and industrial water and the supply of ocean oil.

Description

technical field

[0001] The invention relates to a high-performance polyurethane nanocomposite hose, which is mainly used to prepare a polyurethane nanocomposite hose with high compressive strength, excellent aging resistance and high peel strength, and is mainly used for offshore oil, natural gas, industrial water transportation and ocean oil. Supplies belong to the field of new material manufacturing. Background technique

[0002] In recent years, my country's hose industry has made great progress. Polyurethane composite hoses used for offshore oil, natural gas, industrial water transportation and offshore oil supply are used in harsh environments for a long time, requiring high compressive strength, excellent aging resistance, and high peel strength.

[0003] At present, the composite hose produced in China includes an outer protective layer, a middle reinforcement layer, and an inner leak-proof layer. The braided single fiber tape is used as the reinforcement layer, and...