Session: MF-13-01 Composite and Non-Metallic Systems for Pressure Vessels and Piping (Joint with D&A)

Paper Number: 154637

154637 - Industrial Preparation of High-Temperature Resistant Rubber Pipes for Trenchless Rehabilitation Technology 

Abstract: 

Trenchless lining rehabilitation technology provides an efficient, environmentally friendly, and sustainable solution for pipeline repairs, especially for drainage and oil transportation pipelines. However, for thermal pipelines operating at temperatures above 100°C, traditional plastic materials, such as polyethylene (PE), are not suitable for long-term use under these conditions, as they are prone to high-temperature aging and failure. Therefore, the development of heat-resistant materials suitable for high-temperature environments has become a key issue in the promotion and application of trenchless rehabilitation technology for thermal pipelines.

This study developed a high-temperature-resistant rubber material suitable for operating conditions between 120-150°C and fabricated rubber pipelines using industrial production processes. The developed rubber material uses ethylene propylene diene monomer (EPDM) as the primary matrix, with the addition of industrial-grade deep eutectic solvents (DES) as a modifier to enhance the material's heat resistance and mechanical properties. In addition, to verify the high-temperature performance of the fabricated rubber pipelines, accelerated aging tests were conducted at 150°C, and the mechanical properties of the pipelines were tested before and after aging. The experimental results showed that the industrially produced rubber pipelines exhibited excellent mechanical properties and aging resistance, maintaining long-term stability under high-temperature conditions. This demonstrates that the developed rubber material is a feasible and effective solution for trenchless rehabilitation of thermal pipelines.

Presenting Author: Haijie Zhi Zhejiang University

Presenting Author Biography: Zhejiang University graduate student, research direction is non-metal hydrogen pipeline.

Authors:

Haijie Zhi Zhejiang University
Sohail Yasin Zhejiang University
Yao Li Beijing Heating Municipal, Engineering Construction Co., Ltd.
Ce Zheng Beijing Heating Municipal, Engineering Construction Co., Ltd.
Guangzhong Li Jiangsu Shuangteng Pipe Industry Co., Ltd.
Jing Zhao Bestyield Technology (Huizhou) Co., Ltd
Xiaoping Zou Bestyield Technology (Huizhou) Co., Ltd
Liang Zhang Zhejiang University
Jianfeng Shi Zhejiang University