Flame-retardant prestressed plastic corrugated pipe and processing method thereof

Abstract

The invention discloses a flame-retardant prestressed plastic corrugated pipe. The flame-retardant prestressed plastic corrugated pipe comprises the following raw materials in parts by weight: 50-70 parts of recycled plastic, 50-60 parts of pure recycled plastic, 6.5-10 parts of a filling material, 6-8.5 parts of an anti-aging agent, 6-10 parts of a flame retardant, 1.9-3 parts of graphite, 1-2 parts of an adhesive, 5-8 parts of peroxide masterbatches and 4-5.5 parts of a toughening agent, wherein the anti-aging agent is selected from the group consisting of organophosphate and thioester; theflame retardant is pentaerythritol; the adhesive is selected from the group consisting of cyanoacrylate, polyolefin and phenolic aldehyde; and the toughening agent is selected from the group consisting of acrylic resin and epoxy resin. According to the invention, recycled materials are adopted as main raw materials, so energy is saved; through addition of the flame retardant, the prepared corrugated pipe has flame-retardant and heat-insulation effects; and through addition of the adhesive and the toughening agent, the toughness of the corrugated pipe can be effectively improved, and the service life of the corrugated pipe is prolonged.

Description

technical field [0001] The invention relates to the technical field related to corrugated pipe production, in particular to a flame-retardant prestressed plastic corrugated pipe and a processing method thereof. Background technique [0002] With the vigorous development of municipal engineering and infrastructure construction, the demand for prestressed bellows is growing rapidly. As the pore-forming material of the prestressed post-tensioning method, bellows are an important part of the prestressing system. Metal bellows have been used for a long time as the main pore-forming material. When used for too long, there is still the possibility of corrosion, so it cannot protect the tendons well. Metal bellows are gradually replaced by other bellows due to their shortcomings such as corrosion resistance, poor sealing, easy damage, and high frictional resistance, especially plastic bellows, which are developing rapidly and showing a sudden rise. Vacuum grouting technology and S...

AI Technical Summary

Problems solved by technology

It can not only solve the problem of not full and dense grouting in the metal bellows channel of the traditional pressure grouting process, but also provide two strong protective barriers for the post-tensioning prestressing system, greatly improving the protection conditions of the prestressing tendons, thereby improving the prestressing force. The safety and durability of the structure and components, but the existing bellows have poor flame retardancy