聚氨交联结构的有效调节:为风力轮机叶片实现卓越的加工和机械性能
Zijin Jiang1,2, Lingtong Li1, Luoping Fu2
1The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
Polymers
|January 23, 2024
概括
这项研究开发了一种用于风力轮机叶片的新型聚氨 (PU) 复合材料,比环氧树脂提供了更好的耐疲劳性和强度. 该材料表现出优良的机械性能和与玻璃纤维面料的兼容性.
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
- 复合材料 复合材料 复合材料
背景情况:
- 环氧树脂是风力轮机叶片的标准,但有其局限性.
- 聚氨 (PU) 有望提高耐疲劳性,降低粘度和提高强度.
- 开发先进的PU材料对于下一代风能技术至关重要.
研究的目的:
- 使用基甲酸盐 (HPMA) 在聚氨 (PU) 中创建密集的交联结构.
- 为了实现低加工粘度和优良的机械性能,用于风力轮机叶片应用.
- 评估开发的PU的热稳定性,机械性能和复合材料性能.
主要方法:
- 合成的PU共聚合物,含有不同量的HPMA.
- 具有特征的PU特性包括粘度,凝结时间,热稳定性和机械性能.
- 研究了与玻璃纤维织物 (GFF) 的兼容性,并通过真空注入测试了复合材料的性能.
主要成果:
- 使用HPMA的PU样本显示了增强的热稳定性和耐热性 (HDT为72°C).
- 优化的PU (PH-50) 具有低粘度 (70 MPa·s) 和足够的凝时间 (120 分钟).
- PU-GFF复合材料在0°方向实现了超过1000 MPa的抗拉强度,表现出高性能.
结论:
- 与传统环氧树脂相比,开发的交联PU共聚合物提供了优越的加工和机械性能.
- PU-GFF复合材料非常适合制造高强度风力轮机叶片.
- 这项研究为推进风能技术提供了有前途的材料.
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