Modified polypropylene wave crest double-wall pipe and preparation method of modified polypropylene material thereof

Abstract

The invention provides a modified polypropylene wave crest double-wall pipe and a preparation method of a modified polypropylene material of the modified polypropylene wave crest double-wall pipe. Themodified polypropylene wave crest double-wall pipe comprises an inner pipe and an outer pipe, wherein the outer pipe comprises a plurality of mutually independent wave-crest pipe bodies, the wave-crest pipe bodies are annular so as to enable the wave-crest pipe bodies to surround the outer peripheral wall of the inner pipe, the wave-crest pipe bodies are arranged on the outer circumferential wallof the inner pipe at intervals in the length direction of the inner pipe so as to form wave crests on the outer circumferential wall of the inner pipe. The wave crest pipe body and the inner pipe areboth formed by processing a modified polypropylene material, and the modified polypropylene material is composed of 80-90 parts of polypropylene resin, 6-10 parts of methyl vinyl phenyl silicone rubber, 7-13 parts of modified inorganic particles, 0.3-1.5 parts of an antioxidant, 0.3-1.5 parts of a light stabilizer and 0.02-0.05 part of a peroxide initiator. The modified polypropylene wave crest double-wall pipe is more reasonable in design, and has the advantages of being small in material consumption, light in weight, flexible in application and good in impact resistance and compression resistance.

Description

technical field [0001] The invention relates to the technical field of pipe materials, in particular to a modified polypropylene wave crest double-wall pipe and a preparation method of the modified polypropylene material. Background technique [0002] At present, plastic pipes, such as HDPE pipes, MPP pipes, and PVC pipes, are widely used in buried power cable protection sleeves due to their light weight, good electrical insulation, corrosion resistance, cold resistance, and good chemical stability. . [0003] Most of the traditional buried power cable protective sleeves are single-wall pipes, and the single-wall pipes have poor compression resistance, which makes the single-wall pipes buried underground vulnerable to deformation due to external forces, which affects their normal use. Therefore, in recent years, various double-wall pipes have appeared on the market. This double-walled pipe includes an inner pipe and an outer pipe, and the outer pipe is a corrugated outer p...

AI Technical Summary

Problems solved by technology

This double-walled pipe includes an inner pipe and an outer pipe, and the outer pipe is a corrugated outer pipe covering the outer surface of the inner pipe; since the outer pipe is a corrugated outer pipe with both peaks and troughs, and the outer pipe needs to The outer surface of the entire inner tube, therefore, the outer tube consumes a lot of material, which will increase the weight of the double-walled tube, and the processing technology of the double-walled tube is more complicated; moreover, after the outer tube is processed, the adjacent outer tube The distance between the two wave crests is fixed, so that the distance between two adjacent wave crests cannot be adjusted according to the specific use conditions, thereby limiting the use of this double-walled pipe

In addition, the existing MPP pipes show low-temperature brittleness due to their high rigidity, so their impact resistance and compression resistance still need to be modified

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