A nanomaterial-enhanced polyvinyl chloride composite material, a preparation method thereof and application thereof in a pipe system

Polyvinyl chloride composite materials were prepared by using a synergistic reinforcement system of nano-silica and carbon nanotubes and a specific process. This solved the problem of uneven dispersion of nanoparticles and resulted in a high-strength, heat-resistant, and flame-retardant pipe material suitable for oilfield water injection, chemical transportation, and heating pipelines.

CN122325899APending Publication Date: 2026-07-03FUJIAN PANDEMING ELECTRIC POWER EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUJIAN PANDEMING ELECTRIC POWER EQUIP CO LTD
Filing Date
2026-04-13
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing PVC pipes suffer from problems such as low impact strength, poor heat resistance, and easy aging. The uneven dispersion of nanoparticles in the polymer matrix makes it impossible for composite materials to achieve multiple properties simultaneously.

Method used

A composite material was prepared by using a synergistic reinforcement system of nano-silica and carbon nanotubes, combined with maleic anhydride-grafted polyvinyl chloride as an interface compatibilizer, calcium-zinc composite stabilizer and nano-layered bimetallic hydroxide as a flame retardant and smoke suppressant, through a specific process to ensure uniform dispersion of nanoparticles and interfacial bonding.

Benefits of technology

The mechanical properties, heat resistance, and flame retardancy of the composite material are improved, and the pipes made from it have excellent pressure resistance, good corrosion resistance, and long service life, making them suitable for piping systems in harsh environments.

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Abstract

This invention discloses a nanomaterial-reinforced polyvinyl chloride (PVC) composite material, its preparation method, and its application in piping systems. It relates to the field of polymer composite materials and comprises the following components by weight: 100 parts of polyvinyl chloride resin. This nanomaterial-reinforced PVC composite material, its preparation method, and its application in piping systems achieve a synergistic reinforcement effect through the combined use of nano-silica and carbon nanotubes. Nano-silica primarily provides rigidity and hardness, while carbon nanotubes form a network structure that enhances toughness and impact resistance. The specific ratio of these two components allows the material to possess both high strength and good toughness. The use of maleic anhydride-grafted PVC as an interfacial compatibilizer greatly improves the interfacial bonding strength and solves the technical problem of easy agglomeration of nanoparticles.
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