中国塑料 ›› 2024, Vol. 38 ›› Issue (2): 76-81.DOI: 10.19491/j.issn.1001-9278.2024.02.012

• 加工与应用 • 上一篇    下一篇

钢塑转换防腐层老化性能研究

吴志峰(), 姜锐涛, 丁永跃, 潘新飞, 王志伟   

  1. 上海乔治费歇尔亚大塑料管件制品有限公司,上海 201708
  • 收稿日期:2022-07-08 出版日期:2024-02-26 发布日期:2024-02-03
  • 作者简介:吴志峰(1973—),男,高级工程师,从事聚乙烯管件设计研究和钢塑转换研究, wuzhifeng@chinaust.com

Aging performance of steel⁃plastic⁃transition coating

WU Zhifeng(), JIANG Ruitao, DING Yongyue, PAN Xinfei, WANG Zhiwei   

  1. Shanghai Georg Fischer Chinaust Plastics Fittings CO,LTD,Shanghai 201708,China
  • Received:2022-07-08 Online:2024-02-26 Published:2024-02-03

摘要:

为了评估钢塑转换防腐层使用过程中的老化速率,通过室外暴晒和室内紫外加速老化测试的方法,分别对钢塑转换接头熔结环氧树脂涂层(FBE)和聚乙烯热收缩套层(3PE)基材进行了试验。测试内容包含钢塑转换接头FBE的色差、微观形态、附着力和3PE基材的拉伸强度、断裂伸长率、微观形态。结果表明,对于FBE室内紫外老化强于室外暴晒老化,基于色差测试的加速因子约为8.6~12.8倍,基于涂层产生孔洞和裂纹试验加速因子约为10.3~12.8倍。对于3PE基材,基于断裂伸长率的加速因子约为8.6倍,拉伸强度的加速因子关联性不明显。

关键词: 钢塑转换, 熔结环氧树脂涂层, 聚乙烯热收缩套层, 色差, 拉伸强度

Abstract:

This article focused on evaluation of the aging rate of the steel⁃plastic⁃transition coating during the use. The methods employed for this evaluation include outdoor exposure and indoor ultraviolet accelerated aging tests on the fusion⁃bonded epoxy (FBE) coating and three⁃layers polyethylene coating (3PE) of the steel⁃plastic⁃transition. The tests were carried out in terms of encompass color difference, microscopic morphology, the adhesion strength for the FBE coating, and the tensile strength, elongation at break, and microscopic morphology for the 3PE substrate. The results indicated that the indoor ultraviolet aging was more effective than outdoor exposure aging for the FBE coating. The acceleration factor based on color difference testing was approximately 8.6~12.8 times, while the acceleration factor based on the holes and cracks formation tests for the coating was between 10.3 and 12.8 times. Regarding the 3PE substrate, the acceleration factor based on elongation at break was about 8.6 times, and the correlation between the acceleration factor and tensile strength was not significant.

Key words: steel?plastic?transition, fusion bonded epoxy coating, three?layers polyethylene coating, chromatic aberration, tensile strength

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