A wound thermoplastic pipe and method of manufacture thereof

By impregnating a prepolymer containing a photoinitiator or free radical initiator onto continuous fibers and initiating polymerization with ultraviolet light, the environmental pollution and performance deficiencies in the manufacturing process of thermosetting pipes are solved, enabling the efficient and low-cost manufacturing of thermoplastic spiral wound pipes with good impact resistance and recyclability.

CN115534283BActive Publication Date: 2026-07-14JIANGSU YINGREN NEW MATERIAL TECH CO LTD
View PDF 5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU YINGREN NEW MATERIAL TECH CO LTD
Filing Date
2022-10-19
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing continuous fiber reinforced thermosetting pipes suffer from problems such as resin dripping, splashing, and volatilization polluting the environment during manufacturing, as well as being fragile, having poor impact resistance, being difficult to recycle, and having complex and costly processes.

Method used

Continuous fiber-reinforced thermoplastic spiral pipes are manufactured by impregnating a prepolymer containing a photoinitiator or a free radical initiator with continuous fibers and initiating polymerization with an ultraviolet lamp. The flexibility and viscosity of the liquid resin are used for winding, and interlayer bonding is achieved by combining low-temperature polymerization technology.

Benefits of technology

It achieves zero resin dripping and volatilization, fast polymerization speed, good material flexibility, good interlayer adhesion, and better impact resistance than thermosetting pipes. It is suitable for large-scale production and can be recycled.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN115534283B_ABST
    Figure CN115534283B_ABST
Patent Text Reader

Abstract

The present application relates to a kind of winding thermoplastic pipe and its manufacturing method, specifically manufacturing method is that continuous fiber is impregnated with prepolymer containing photoinitiator or / and free radical initiator, then is wound on core pipe, then is initiated polymerization by ultraviolet light lamp irradiation, then is carried out heat treatment, and the winding pipe of continuous fiber reinforced thermoplastic resin matrix composite material is obtained.The present application develops a kind of thermoplastic fiber winding forming technology similar to thermosetting fiber winding forming technology, is the key to realize the wide application of winding thermoplastic pipe;Continuous fiber is impregnated with prepolymer and has flexibility, easy to winding deformation, prepolymer has certain viscosity, can realize the bonding between layers, is initiated polymerization by ultraviolet light at low temperature and is quickly carried out, dry forming is fast, and the scale production thermoplastic pipe can be realized;The polymethyl methacrylate in the continuous fiber reinforced polymethyl methacrylate winding pipe manufactured by the present application can be decomposed into monomer at high temperature, and the separation and recovery of resin and fiber can be realized.
Need to check novelty before this filing date? Find Prior Art