Novel pipeline suitable for non-excavation engineering

Abstract

The invention provides a novel pipeline which is suitable for non-excavation engineering, and the product is prepared from the following components by weight ratio: 100 parts of B-85 type PVC resins, 3-5 parts of compound lead stabilizing agents, 3-5 parts of acrylic acid resins, 5-7 parts of chlorinated polyethylene or MBS resins, 1-3 parts of plasticizers, 0.5-2 parts of lubricants, 1.5-3 parts of fire retardants, 0.5-2 parts of anti-oxidants, 7-15 parts of alkali-free short glass fibers, and 0-5 parts of color masterbatch. The pipeline has good toughness and the fracture percentage elongation reaches more than 350, and the fracture yield strength reaches more than 50 MPa; the pipeline has good rigidity, and the wall is twice or three times as thick as the wall of pipeline made from polypropylene material; the product has good recovery rate and small permanent compression deformation; the product has good acid and alkali resistance capabilities, and the components mainly do not have inorganic filling materials, so the underground acid and alkali environment has little corrosion to the pipeline; the joint employs rivet or special-purpose glue, thereby the joint has high intensity and can be used for non-excavation engineering; the product has aging resistance with long usage life, and the can be better applied to non-excavation engineering.

Description

technical field [0001] The invention belongs to the technical field of pipeline production, and in particular relates to a novel pipeline suitable for non-excavation engineering. Background technique [0002] With the promotion of urbanization, it is difficult to directly dig trenches to bury pipes in the existing urban power grid transformation and municipal engineering transformation. Some pipelines need to pass through large buildings. The only way is to bury pipes underground. The emergence of mining technology has solved this problem well. However, the drag pipes used in the trenchless technology have to face more complex underground conditions, so the pipes are required to have strong toughness, high tensile strength, high ring stiffness, low temperature resistance, flame retardancy, Corrosion resistance, aging resistance and low production cost. Existing pipeline materials mostly use high-density polyethylene, modified polypropylene, polyvinyl chloride or chlorinate...

AI Technical Summary

Problems solved by technology

Existing pipeline materials mostly use high-density polyethylene, modified polypropylene, polyvinyl chloride or chlorinated polyvinyl chloride, etc., each of which has certain limitations. For example, polyethylene has low rigidity and is easy to be flattened during dragging, with the same use effect High material cost, flammability, poor aging resistance and other defects also limit its large-scale promotion and use; modified polypropylene has low solder joint strength, easy to break during dragging, high material cost for the same use effect, and high material cost. Defects such as flammability and poor aging resistance also limit its large-scale promotion and use; ordinary polyvinyl chloride or chlorinated polyvinyl chloride has poor toughness, easy to break during dragging, easy to become brittle at low temperature, and easy to deform at a slightly higher temperature. Restricting the popularization and use of ordinary polyvinyl chloride or chlorinated polyvinyl chloride in trenchless engineering