Basalt fiber reinforced high-ring stiffness polyethylene pipe and preparation method thereof

By preparing basalt fiber reinforced high ring stiffness polyethylene pipes, and treating basalt fibers with γ-aminopropyltriethoxysilane and then compounding them with modified polysiloxane, the problems of low stiffness and poor creep resistance of polyethylene pipes were solved, achieving high stiffness and long-term stability under complex working conditions.

CN122404754APending Publication Date: 2026-07-17HAINAN HUASU TECH GRP CO LTD
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Patent Information

Application Number
CN202610778295.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-02
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

At present, polyethylene pipes have low stiffness and poor creep resistance, making it difficult to meet the requirements of harsh working conditions such as high temperature, deep burial and complex geology.

Method used

A method for preparing high-ring stiffness polyethylene pipe reinforced with basalt fiber is adopted. Basalt fiber is treated with γ-aminopropyltriethoxysilane to form aminobasalt fiber, which is then melt-extruded with modified polysiloxane, dicumyl peroxide, etc. at high temperature to form a composite material to improve rigidity and deformation resistance.

Benefits of technology

It significantly improves the ring stiffness and creep resistance of polyethylene pipes, enabling them to maintain structural stability over a long period of time under complex working conditions.

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Abstract

The invention discloses a basalt fiber reinforced high ring stiffness polyethylene pipe and a preparation method thereof, the polyethylene pipe comprises the following raw materials: 100-120 parts of high density polyethylene, 15-20 parts of modified polysiloxane, 15-25 parts of amino basalt fiber and 1-3 parts of dicumyl peroxide, in the melting process of the raw materials, maleimide on the modified polysiloxane is grafted with a high-density polyethylene molecular chain under the action of dicumyl peroxide, epoxy groups on the modified polysiloxane can react with amino groups on the amino basalt fiber, the basalt fiber has high modulus, and the high-density polyethylene molecular chain can be used for preparing the high-density polyethylene composite material. After the modified polysiloxane is compounded with high-density polyethylene, a rigid physical framework can be formed in a matrix, the deformation resistance of the material is remarkably improved, the modified polysiloxane can hinder relative slippage of molecular chains under continuous loads, long-term deformation of the pipe is inhibited from the microscopic level, and the creep resistance effect of the pipe is improved.
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