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根据复合材料交叉连接策略,优化烯酸接材料的插水特性和机械性能
Fengxian Yu1, Langtian Qin2, Deqiang Han1
1Zhongke Jiantong Engineering Technology Co., Ltd., Beijing 101399, China.
Polymers
|April 28, 2025
概括
这项研究开发了一种用于烯酸接材料的新型复合材料交叉连接策略,显著提高机械强度和耐水性,用于在潮湿环境中长期防透应用.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 地质技术工程 地质技术工程
背景情况:
- 传统的烯酸接材料在长期浸泡水中降解并失败,限制了它们在加压水环境中的使用.
- 接口粘合故障和机械性能降低是现有接解决方案的关键挑战.
研究的目的:
- 开发一种改进的烯酸接材料,为加压水环境增强机械和液压稳定性.
- 通过采用复合交联协同战略来解决传统材料的局限性.
主要方法:
- 使用聚乙烯糖醇二烯酸盐 (PEG500DA) 和单功能交叉连接器 (PEG-MA) 构建了一个双网络结构.
- 通过调节三甲胺含量以控制凝时间来优化材料配方.
- 系统地改变了烯酸盐度,PEG500DA/PEG-MA比率和总交叉连接剂含量.
主要成果:
- 最佳烯酸盐度 (35%) 产生的泥粘度为8.3mPa·s,拉伸强度为76kPa,砂固化压力强度为440kPa.
- PEG500DA/PEG-MA比为2:3导致了高拉伸强度 (78kPa),柔性 (>407%) 和336kPa的沙结固压力强度.
- 超过5%的总交叉连接剂含量将28天的吸水率降低到12%,体积膨胀率降低到11%.
- 经过修改后的材料在56天后实现了350kPa的水压阻力,比商业产品提高了75%.
结论:
- 复合材料交叉连接策略显著提高了烯酸接材料的机械性能和液压稳定性.
- 优化的材料在模拟压缩水条件下提供优越的长期抗漏性能.
- 这种创新解决方案推进了材料设计,以在具有挑战性的水文地质环境中可靠应用.
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