Steel belt and reinforced polyvinyl chloride helical bellow and production method thereof

Abstract

The invention discloses a steel belt and reinforced polyvinyl chloride helical bellow and a production method thereof. The helical bellow comprises an inner polyvinyl chloride tube, a molded steel belt and an outer polyvinyl chloride tube. The molded steel belt is wound between the inner polyvinyl chloride tube and the outer polyvinyl chloride tube at equal intervals. Each of the inner polyvinyl chloride tube and the outer polyvinyl chloride tube comprises, by weight, 180-200 parts of polyvinyl chloride resin, 10-12 parts of nano-silica, 5-6 parts of isocyanate compatilizers, 4-7 parts of dibutyltin maleate, 5-7 parts of cubic boron nitride micro powder, 8-12 parts of calcium stearate, 2-4 parts of potassium hypophosphite, 5-7 parts of epoxidized soybean oil, 5-6 parts of maleic anhydride grafted polyethylene, 7-9 parts of alkyl phosphoric acid, 8-10 parts of polyethylene wax, 7-8 parts of jade powder, 6-8 parts of conductive black, 7-11 parts of aluminum-zirconium coupling agents, 4-5 parts of tribasic lead sulfate, 8-14 parts of antioxidants CA, 10-14 parts of color master batches and 7-9 parts of assistant master batches. The steel belt and reinforced polyvinyl chloride helical bellow and the production method thereof have the advantages of simple process, low production cost, less proneness to fracture during bellow forming, firmness in adhesion, less proneness to layering and safety and reliability in use.

Description

technical field [0001] The invention relates to a spiral corrugated pipe, in particular to a steel strip reinforced polyvinyl chloride spiral corrugated pipe and a preparation method thereof. Background technique [0002] The steel belt reinforced PVC spiral corrugated pipe is based on high-density polyvinyl chloride, and the steel belt coated with adhesive resin is formed into a corrugated form as the main support structure, and is wound and compounded with PVC material to form an integral double-walled spiral Bellows. Because the steel belt reinforced PVC spiral corrugated pipe has the characteristics of high rigidity, high strength, corrosion resistance, wear resistance and strong flexibility, it is widely used in the field of drainage as a cost-effective steel-plastic pipe. , because in the production process, the yield strength of the steel strip material varies greatly, therefore, the same bending degree cannot guarantee that the steel strip reaches the yield limit, ...

AI Technical Summary

Problems solved by technology

Because the steel belt reinforced PVC spiral corrugated pipe has the characteristics of high rigidity, high strength, corrosion resistance, wear resistance and strong flexibility, it is widely used in the field of drainage as a cost-effective steel-plastic pipe. , because in the production process, the yield strength of the steel strip material varies greatly, therefore, the same bending degree cannot guarantee that the steel strip reaches the yield limit, so that there is a certain rebound stress in the steel strip, which makes it difficult to form the pipe and is easy to break. Conforms to poor bonding, prone to delamination problems, and has certain safety hazards during installation and use