在低温条件下对自膨胀聚合物接材料的泡特性和微观结构进行实验研究
Songtao Li1, Baolin Wang2,3, Yanlong Gao2,3
1College of railway engineering, Zhengzhou Railway Vocational & Technical College, Zhengzhou, China.
PloS one
|June 4, 2025
概括
聚合物接材料在寒冷中收缩,减少泡体积,影响寒冷地区的液压结构维修. 较低的温度使泡体积减少40厘米3,表面温度每摄氏度降低1.7°C.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 地质技术工程 地质技术工程
背景情况:
- 聚合物接材料对于水力结构维修至关重要,因为它们具有自我膨胀能力.
- 它们在寒冷地区的性能受到低温泡特性的影响.
研究的目的:
- 为了研究低温下聚合物接材料的泡行为.
- 分析温度对泡细胞结构和形态学的影响.
主要方法:
- 在不同低温下,在垂直方向进行自由膨胀合试验.
- 有限制的模具合试验,所有四面都受到限制.
- 扫描电子显微镜 (SEM) 检查泡细胞结构和形态.
主要成果:
- 泡体积表现出冷缩,每下降1°C,泡体积减少约40厘米3.
- 表面温度每下降1摄氏度就下降1.7摄氏度.
- 发泡过程分为快速,缓慢和稳定的阶段,受内部温度应激的影响.
- 泡密度随着温度的降低而下降;细胞形态变得模糊,不完整的结构增加.
结论:
- 低温对聚合物接材料的膨胀和泡结构产生负面影响.
- 这些发现为在寒冷环境中用聚合物修复液压结构提供了关键数据.
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