相关实验视频
Updated: Jun 23, 2025

08:41
Ultrasound Velocity Measurement in a Liquid Metal Electrode
Published on: August 5, 2015
11.7K
适应湿度的液态金属核心外材料,用于持久的保温和绝缘
Xuanhan Chen1, Mingyuan Sun1, Lu Cao2,3
1College of Mechanical and Electrical Engineering, Soochow University, Suzhou, 215000, China.
Advanced materials (Deerfield Beach, Fla.)
|June 17, 2024
概括
新的自我加热服装使用特殊的微粒从湿度中产生热量,在寒冷潮湿的条件下提供更好的保护. 这项创新技术在极端天气条件下增强了绝缘和佩戴者安全.
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
- 热分析技术的热分析技术
背景情况:
- 高湿度与极度寒冷相结合,大大降低了服装绝缘效率.
- 现有的绝缘技术缺乏适应不同湿度水平的适应性,造成风险.
- 开发用于极端天气保护的先进材料至关重要.
研究的目的:
- 为极端寒冷和潮湿环境开发具有自我加热能力的智能服装.
- 解决当前服装绝缘在效率和湿度适应性方面的局限性.
- 引入一种新的湿度刺激自热机制,以提高热管理.
主要方法:
- 制造芯-液体金属外微粒 (Al@LM-MPs) 的生产.
- 整合Al@LM-MPs作为填充剂用于服装绝缘.
- 测试Al@LM-MPs在各种温度下对环境湿度产生热量的反应.
主要成果:
- Al@LM-MPs 展示了通过与水分子反应产生热量的独特能力.
- 微粒子在广泛的温度范围内对湿度有很高的敏感性.
- 开发的服装表现出自主自我加热,以应对湿度.
结论:
- 新的Al@LM-MPs使得可以创建受湿度刺激的自我加热服装.
- 这项技术在极端寒冷和潮湿条件下提供了更好的保温和绝缘.
- 智能服装提供了一个有希望的解决方案,在恶劣天气中提高安全性和舒适性.
相关概念视频
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
Mechanisms of Heat Transfer
318
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
318
Mechanisms of Heat Transfer II
3.2K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
3.2K
Specific Heat
62.2K
The specific heat capacity of a substance refers to the energy required to increase the temperature of one gram of that substance by one degree Celcius. Specific heat capacity is often represented in calories (cal), grams (g), and degrees Celsius (oC), but can also be expressed in joules (J), kilograms (kg), and Kelvin (K), among other units.
For example, increasing the temperature of one gram of water by 1°C requires one calorie of heat energy and can be written as 1 cal/g-°C, or...
For example, increasing the temperature of one gram of water by 1°C requires one calorie of heat energy and can be written as 1 cal/g-°C, or...
62.2K
Mechanisms of Heat Transfer I
4.2K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
4.2K
Thermal Insulation in Masonry Walls
117
In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
117

