坚固的结构粘合剂具有对高温和冷温度的超抗性
Hui Niu1,2, Shengtao Wang1,2, Yilin Shen1
1The Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China.
Polymers
|May 27, 2023
概括
新型聚合物 (MX和MXU树脂) 从196°C到200°C提供了特殊的结构粘附性. 这些高性能粘合剂在极端温度下保持显著的粘合强度,克服了当前高温有机粘合剂的局限性.
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
- 粘合技术的技术 粘合技术
背景情况:
- 高温结构粘附是有机粘合剂面临的重大挑战.
- 有限的商业粘合剂可用于超过150°C的应用.
研究的目的:
- 设计和合成用于高温结构粘附的新型聚合物.
- 为了评估这些聚合物的性能在广泛的温度范围内.
主要方法:
- 通过聚合和共聚合合成两种新型聚合物MX和MXU树脂.
- 在 -196 °C 到 200 °C 的温度下,对各种基板进行粘合强度的测试.
- 聚合物性能的表征,包括玻璃过渡温度 (Tg).
主要成果:
- 从196°C到200°C,MX和MXU树脂表现出卓越的结构粘附性.
- 在室温下达到1327 MPa的结合强度,在 -196 °C下达到1718 MPa的结合强度.
- 在200°C保持1011 MPa的显著粘合强度,Tg高达~179°C.
结论:
- 新型MX和MXU树脂在极端温度下表现出优越的性能作为结构粘合剂.
- 平衡的刚性-柔性结构,高芳香含量和甲基连接有助于它们的高热稳定性和粘合强度.
- 这些聚合物代表了对高温粘合剂应用的有希望的进步.
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