超软的诺伯基热塑性弹性体具有高强度和最高使用温度
Henry L Cater1, Marshall J Allen2, Mark I Linnell2
1Department of Chemistry, The University of Texas at Austin, Austin, TX, 78712, USA.
Advanced materials (Deerfield Beach, Fla.)
|May 8, 2024
概括
新的热塑性弹性体 (TPEs) 提供了与皮肤相似的柔软性,高强度和高达260°C的耐热性的独特组合,克服了当前材料在各种应用中的局限性.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
背景情况:
- 热塑性弹性体 (TPEs) 由于其弹性和可再加工性而广泛使用.
- 目前的TPE在平衡软度与强度方面面临限制,并且具有较低的上部使用温度 (≤100°C).
- 这些局限性限制了TPE在生物接口,电子和航空航天等苛刻领域的应用.
研究的目的:
- 开发出新型TPE,结合出色的柔软性,高强度和高耐热性.
- 为满足适用于高性能和生物界面应用的多功能TPE的未满足需求.
- 建立结构-财产关系,以指导下一代TPE的设计.
主要方法:
- 基于诺波烯的新型ABAtriblock共聚合物的新设计和合成.
- 在TPE合成中使用环开元化聚合 (ROMP).
- 材料特性包括机械模块,强度和热稳定性.
主要成果:
- 实现了皮肤状模块 (<100 kPa) 和与商业TPE (>5 MPa) 具有竞争力的强度的TPE.
- 已证明高上使用温度约为260°C,适用于高性能塑料.
- 材料表现出弹性,性,可再加工性和无需增塑剂的保质性.
结论:
- 成功合成了新的TPE,克服了软度-强度-热阻的权衡.
- 开发的TPE为需要生物柔软性和热力学耐用性的应用提供了多功能解决方案.
- 已识别的结构-属性关系为TPE材料设计的未来进步提供了基础.
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