中国塑料 ›› 2008, Vol. 22 ›› Issue (10): 90-94 .DOI: 10.19491/j.issn.1001-9278.2008.10.020

• 标准与测试 • 上一篇    下一篇

聚乙烯承压管道及原料耐慢速裂纹增长测试标准及实验要求

赵启辉   

  1. 上海乔治费歇尔管路系统有限公司 上海 201319
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-10-25 发布日期:2008-10-25

Teat Standard and Requirement of Pressurized Polyethylene Piping and Resistibility of Slow Crack Growth

Zhao Qi-hui   

  1. Georg Fischer Piping Systems Ltd, Shanghai 201319, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-10-25 Published:2008-10-25
  • Contact: Zhao Qi-hui

摘要: 聚乙烯(PE)管材在施工和使用过程中会产生裂纹并缓慢扩展,评价耐慢速裂纹增长性能包括原料测试和管材测试两部分。介绍了国际标准和国家标准中关于耐慢速裂纹增长试验的要求、原理和应用,并列举了通过切口试验加速老化评价和预测PE原料长期性能和使用寿命的几种方法。

关键词: 聚乙烯, 管材, 耐慢速裂纹增长, 使用寿命

Abstract: Cracks possibly appear and then grow slowly through Polyethylene pipes during installation and service life. To evaluating slow crack growth resistance (SCG) property, there are two different test methods for natural resin and piping product. International and national standards correlated with SCG’s requirements, principles and applications are introduced. Meantime several accelerating methods by cutting a notch for predicting longtime hydrostatic property and final life of Polyethylene resin are also exampled.

Key words: polyethylene, pipes, resistibility of slow crack growth, lifetime