中国塑料 ›› 2022, Vol. 36 ›› Issue (9): 148-159.DOI: 10.19491/j.issn.1001-9278.2022.09.020

• 标准与测试 • 上一篇    下一篇

基于应变硬化模量方法评价聚乙烯管材耐慢速裂纹增长性能研究进展

李岩1,2,3(), 唐晓旭1,2,3, 张伟杰1,2,3, 黄瑞鹏1,2,3, 张杉1,2,3   

  1. 1.中国建筑科学研究院有限公司,北京 100013
    2.建研院检测中心有限公司,北京 100013
    3.国家建筑工程技术研究中心,北京 100013
  • 收稿日期:2022-05-19 出版日期:2022-09-26 发布日期:2022-09-26
  • 作者简介:李岩(1992—),女,中级工程师,从事建筑材料研究,2544713316@qq.com
  • 基金资助:
    中国建筑科学研究院有限公司青年科研基金资助(20200112331030035)

Research progress in evaluation of slow crack growth resistance of polyethylene pipes based on strain hardening modulus

LI Yan1,2,3(), TANG Xiaoxu1,2,3, ZHANG Weijie1,2,3, HUANG Ruipeng1,2,3, ZHANG Shan1,2,3   

  1. 1.China Academy of Building Research,Beijing 100013,China
    2.CABR Testing Center Co,Ltd,Beijing 100013,China
    3.National Engineering Research Center of Building Technology,Beijing 100013,China
  • Received:2022-05-19 Online:2022-09-26 Published:2022-09-26

摘要:

概述了聚乙烯(PE)管材3种典型失效破坏模式(韧性破坏、脆性破坏、热氧老化破坏),简述了慢速裂纹增长的分子机理和断裂力学机理,详细介绍了应变硬化模量(SH)方法的测试原理和试验过程,介绍了目前SH法测试与材料微观结构相关性的研究进展,综述了国内外关于SH法评价管材耐慢速裂纹增长性能的可靠性研究以及应用SH法评价材料耐环境应力开裂性能的研究进展,并对应用SH法在控制产品质量方面提出展望。

关键词: 应变硬化模量, 耐慢速裂纹增长, 聚乙烯, 管材

Abstract:

In this paper, the three failure modes of pipes were summarized and the molecular mechanism and fracture mechanics mechanism of slow crack growth were briefly described. The principle and test process of the strain hardening modulus (SH) method were introduced in detail. The paper also reviewed the research progress in the correlation of material microstructures, the domestic and foreign reliability research of SH method for the evaluation of the slow crack growth resistance of pipes, and the application of SH method for the evaluation of the environmental stress cracking resistance of materials. Finally, the applications of SH method for the control of outlook on product quality was discussed.

Key words: strain hardening modulus, slow crack growth resistance, polyethylene, pipe

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