Xsc50 cold-shrinkable plastic-lined aluminum alloy pipe for gas, piping system and preparation method

Abstract

The invention relates to the technical field of pipes, in particular to an XSC50 cold shrinkage type lining plastic aluminum alloy pipe and pipeline system used for fuel gas and a manufacturing method. The XSC50 cold shrinkage type lining plastic aluminum alloy pipe is composed of an XSC50 resin pipe layer, an aluminum pipe layer, an oxidation film protection layer and a high-adhesive-force oxidation-corrosion-prevention layer which are sequentially arranged from inside to outside. The XSC50 resin pipe is used as the raw material, and therefore the manufactured XSC50 cold shrinkage type lining plastic aluminum alloy pipe can be high in mechanical strength, good in tenacity, quite good in strength rigidity in a high-temperature environment, high in heatproof grade and suitable for working under various environments. Meanwhile, the aluminum pipe and the XSC50 resin pipe are connected in a seamless manner through cold shrinkage and can be firmly combined without adhesives; due to the adoption of the XSC50 resin pipe layer of a certain thickness, the aluminum pipe layer of a certain thickness, the oxidation film protection layer of a certain thickness and the high-adhesive-force oxidation-corrosion-prevention layer of a certain thickness, the strength of the manufactured pipeline reaches about 5.5 MPa at the temperature being 70 DEG C within 50 years; and meanwhile the manufacturing cost is controlled. The manufacturing method is simple, and the manufactured XSC50 cold shrinkage type lining plastic aluminum alloy pipe is excellent in performance and has important significance in promoting application and development of fuel gas pipes.

Description

technical field [0001] The invention relates to the technical field of pipes, in particular to an XSC50 cold-shrinkable plastic-lined aluminum alloy pipe for gas, a pipe system and a preparation method. Background technique [0002] At present, in China's municipal pipe market, plastic pipes are developing steadily. Polyethylene pipes (PE pipes), three-type polypropylene pipes (PP-R pipes), and rigid polyvinyl chloride pipes (UPVC pipes) all occupy a place. Among them, polyethylene pipes The strong development momentum is the most eye-catching. Polyethylene pipes are used in a wide range of fields, among which water supply pipes and gas pipes are the two largest application markets. PE resin is polymerized from monomer polyethylene. Due to different polymerization conditions such as pressure and temperature during polymerization, resins with different densities can be obtained, so there are high-density polyethylene, medium-density polyethylene and low-density polyethylene....

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Problems solved by technology

[0004] In the existing gas pipe, due to the disadvantages of low mechanical strength, poor toughness, insufficient high-temperature strength and rigidity, and low heat resistance, the actual application range is limited by the use environment, and it cannot be used in a harsh environment.

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