Preparation method of phosphatized anti-corrosive corrugated pipe

Abstract

The invention discloses a preparation method of a phosphatized anti-corrosive corrugated pipe. According to the preparation method of the phosphatized anti-corrosive corrugated pipe, phosphatized anti-corrosive montmorillonoid achieves the antibacterial properties of 2-methyl-4-isothiazolin-3-ketone, sodium diacetate and benzotriazole, the fire-retarding property of tetrakis hydroxymethyl phosphonium sulfate as well as the high-strength characters of montmorillonoid, and meanwhile, obtains excellent surface activity and can effectively improve compatibility with polymer matrix and the anti-bacteria, fire-retarding and mechanical properties of finish pipe products.

Description

technical field [0001] The invention belongs to the field of corrugated pipes, and in particular relates to a preparation method of phosphating anticorrosion corrugated pipes. Background technique [0002] Polymer materials are mainly composed of carbon, hydrogen and other elements. Most of the polymer materials themselves are not flame retardant. great harm; [0003] Polyethylene corrugated pipe is a new type of pipe with a special shaped cross-section ring corrugated structure, which can replace ordinary plastic pipes and other material pipes, and can be used as building wire casings, farmland water conservancy seepage drainage pipes, cable guide pipes, casings, etc.; [0004] Polyethylene is a typical polymer material. Like most polymer materials, it is flammable. The limiting oxygen index of common polyethylene materials is between 18-20%. For the safety of fire prevention, polymer materials usually have a limit oxygen index of at least above, and some special occasion...

AI Technical Summary

Problems solved by technology

[0007] Application number 201510230205.3 discloses a single-wall corrugated pipe manufacturing process, including the following steps: S1, the following parts by weight of hot melt adhesive 50-70, polyolefin resin 30-50, tackifying resin 3-5, compound Stabilizer 1.2-2, flame retardant 1-2, reinforcing agent 5-30, compatibilizer 0.02-0.05, toughening agent 5-8, add in the internal mixer of airtight high-speed operation; S2, in step S1 After the mixture is kneaded and granulated at 100-140°C with an internal mixer, it is put into a single-screw extruder, extruded at 100-150°C, pelletized, and air-cooled; S3, the obtained in step S2 The pellets and the hot melt adhesive are melted separately and then co-extruded into a double-wall casing. In this method, the compatibility between each flame retardant and the resin is poor, and it is easy to reduce the stability and strength of the finished corrugated pipe.