本质上灵活的相变纤维用于智能热调节
Hanqing Liu1,2,3, Xinyu Zhang1,3, Shihui Zhang1
1Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian Technology Innovation Center for Energy Materials Thermodynamics, Liaoning Province Key Laboratory of Thermochemistry for Energy Materials, 457 Zhongshan Road, Dalian, 116023, P. R. China.
Angewandte Chemie (International ed. in English)
|July 12, 2024
概括
新的相变纤维 (PMF) 使用固体-固体过渡来实现卓越的可穿戴热管理. 这些本质上灵活和可洗的PMF为智能织品提供可持续的高性能解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 织工程 织工程 织工程
- 可持续化学 可持续化学
背景情况:
- 由于潜在的热量产生,相变纤维 (PCF) 对于可穿戴的热管理至关重要.
- 由于在使用过程中发生固体-液体过渡,现有的PCF面临实用性的限制.
- 需要先进的PCF,在可穿戴技术中提高稳定性和适用性.
研究的目的:
- 开发具有固体-固体相变性质的内在灵活的PCF.
- 评估这些新型PCF用于可穿戴热管理的性能和实用性.
- 探索开发的相变纤维的可持续性和可回收性.
主要方法:
- 使用聚凝和湿工艺合成聚乙烯糖/4,4'-甲基二 (?? 环基异酸) 纤维 (PMF).
- 阶段过渡行为,机械强度,可洗性,热循环稳定性和可染色性的表征.
- 将PMF编织成透性织物,以评估热管理性能.
主要成果:
- 开发了内在灵活的PMF,具有固体-固体相变特性和可调节的相变行为.
- PMF表现出优越的机械强度 (28 MPa),优异的可洗性 (> 100 个循环),以及热循环稳定性 (> 2000 个循环).
- 与棉织物相比,针织PMF织物显示了显著改善的热管理性能,突出了其实际适用性.
结论:
- 开发的PMF为实际的可穿戴热管理提供了有希望的解决方案,克服了传统PCF的局限性.
- 它们固有的灵活性,耐用性,可回收性和卓越的热性能使它们成为智能织品和可穿戴电子产品的理想材料.
- 在日常应用中,PMF代表了智能热调节材料的可持续进步.
更多相关视频
相关概念视频
Thermosensation
30.4K
Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
30.4K
Membrane Fluidity
152.0K
Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
152.0K
Increased Body Temperature
652
A body temperature above 38°C (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in...
652
Mechanism of heat transfer
1.2K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.2K
Phase Transitions: Melting and Freezing
12.4K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
12.4K
Intrinsically Disordered Proteins
17.8K
Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
17.8K


