Polypropylene solid wall permeation pipe for sponge city and preparation method thereof

Abstract

The invention belongs to the technical field of drainage pipes, and discloses a polypropylene solid wall permeation pipe for a sponge city and a preparation method thereof. The polypropylene solid wall permeation pipe comprises an inner layer, a middle layer and an outer layer, wherein the inner layer comprises, in parts by mass, 100-110 parts of polypropylene, 5-8 parts of an anti-impact agent, and 1-2 parts of a mildew inhibitor; the middle layer comprises, in parts by mass, 100-125 parts of modified polypropylene, 8-10 parts of a micro-porous agent, 0.5-1.0 part of a composite stabilizer, 0.5-0.8 part of an antioxidant, 1-2 parts of a toughening agent, and 3-4 parts of a coupling agent, wherein the modified polypropylene is a compound obtained by firstly preparing an esterification reaction product of graphene and polypropylene, and then compounding the esterification reaction product with zinc oxide; and the outer layer comprises 100-110 parts of polypropylene, 5-7 parts of talc powder, 2-3 parts of a coupling agent, 1-2 parts of an antioxidant, 2-3 parts of a mildew inhibitor, and 0.3-0.5 part of a lubricant. The ring stiffness of current permeation pipes can be significantlyimproved, the opening ratio of the permeation pipes can be increased, and urban permeation drainage pipe network and green space constructions can be more satisfied.

Description

technical field [0001] The invention relates to the technical field of drainage pipes, in particular to a polypropylene solid-wall permeable pipe for a sponge city and a preparation method thereof. Background technique [0002] Sponge city is a new generation of urban stormwater management concept, also known as "water elastic city", which means that the city has good "elasticity" in adapting to environmental changes and dealing with natural disasters caused by rainwater. [0003] With the vigorous development of the sponge city industry, drainage and water collection pipes combined with sponge cities have emerged. According to the structural form, the drainage pipe includes structural wall pipe, solid wall pipe and fiber reinforced composite pipe, etc. It has the characteristics of corrosion resistance, light weight, and easy construction and installation. Among them, the solid-wall pipe is made of polyethylene or polypropylene, etc., and is extruded to form a solid-wall p...

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Problems solved by technology

[0004] The above-mentioned drainage pipe is made on the basis of the existing drainage pipe products, because the ring stiffness of the pipe itself is relatively low, generally only up to SN8~SN16, if used as a permeation pipe, its opening rate The maximum can only reach 5%, which cannot meet the needs of most urban infiltration drainage pipe networks and green space construction

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