glass transition

简明释义

玻璃相变

英英释义

例句

1.The material exhibits a distinct glass transition 玻璃转变 temperature, which is crucial for its application in electronics.

该材料在其电子应用中表现出明显的玻璃转变 玻璃转变 温度，这是至关重要的。

2.Researchers are studying the effects of additives on the glass transition 玻璃转变 temperature of various polymers.

研究人员正在研究添加剂对各种聚合物的玻璃转变 玻璃转变 温度的影响。

3.Understanding the glass transition 玻璃转变 can help engineers design better polymers.

理解玻璃转变 玻璃转变 可以帮助工程师设计更好的聚合物。

4.The glass transition 玻璃转变 is an important concept in the field of food science, particularly in freeze-drying processes.

在食品科学领域，尤其是在冷冻干燥过程中，玻璃转变 玻璃转变 是一个重要概念。

5.During the glass transition 玻璃转变, the material changes from a hard and brittle state to a more rubbery state.

在玻璃转变 玻璃转变 期间，材料从坚硬脆弱的状态转变为更具弹性的状态。

作文

The concept of glass transition is crucial for understanding the behavior of amorphous materials, particularly polymers. In simple terms, glass transition refers to the process where a material transitions from a hard and relatively brittle state into a viscous or rubbery state as the temperature increases. This phenomenon is not only significant in materials science but also has practical implications in various industries, including packaging, electronics, and construction. To delve deeper into the significance of glass transition, we must first understand its underlying mechanisms. When a polymer is heated, the molecular chains that make up the material gain energy and begin to move more freely. Below the glass transition temperature (Tg), these chains are in a rigid state, limiting their movement. As the temperature rises and reaches Tg, the material undergoes a dramatic change; the chains become more flexible, leading to increased mobility. This transition is essential for applications where flexibility and durability are required. For instance, in the packaging industry, materials such as polyethylene terephthalate (PET) must maintain their structural integrity at varying temperatures. Understanding the glass transition of PET allows manufacturers to optimize their products for different environmental conditions, ensuring that they remain effective in protecting the contents. Similarly, in the electronics sector, the glass transition temperature of insulating materials plays a critical role in the performance and reliability of electronic devices. Moreover, the glass transition has implications beyond just physical properties. It can affect the processing of materials, influencing how they are molded, extruded, or otherwise formed into final products. For example, if a polymer is processed at a temperature below its Tg, it may result in defects or incomplete forming, leading to compromised product quality. Therefore, understanding the glass transition is vital for engineers and designers who aim to create high-performance materials. In addition to its technical aspects, the glass transition also offers insights into the fundamental nature of materials. The fact that a seemingly solid structure can exhibit liquid-like properties under certain conditions challenges our traditional notions of solids and liquids. This duality is not only fascinating from a scientific perspective but also opens up new avenues for research and innovation in material design. In conclusion, the phenomenon of glass transition is a key factor in the behavior of amorphous materials, particularly polymers. Its influence extends across various industries, impacting everything from product performance to manufacturing processes. By gaining a deeper understanding of glass transition, we can better harness the properties of materials to meet the demands of modern technology and improve everyday products. As research continues to evolve, the implications of glass transition will undoubtedly lead to exciting advancements in material science and engineering.

“玻璃转变”这一概念对于理解非晶材料的行为至关重要，尤其是聚合物。简单来说，“玻璃转变”指的是一种材料在温度升高时，从坚硬且相对脆弱的状态转变为粘性或橡胶状状态的过程。这种现象不仅在材料科学中具有重要意义，而且在包装、电子和建筑等各个行业都有实际应用。要深入理解“玻璃转变”的重要性，我们必须首先了解其基本机制。当聚合物被加热时，构成材料的分子链获得能量并开始更自由地移动。在“玻璃转变”温度（Tg）以下，这些链处于刚性状态，限制了它们的运动。随着温度的上升并达到 Tg，材料经历了剧烈的变化；链变得更加灵活，导致运动性增加。这种转变对于需要柔韧性和耐用性的应用至关重要。例如，在包装行业，聚对苯二甲酸乙二醇酯（PET）等材料必须在不同温度下保持其结构完整性。理解 PET 的“玻璃转变”使制造商能够优化产品以适应不同的环境条件，确保它们在保护内容物方面有效。同样，在电子行业，绝缘材料的“玻璃转变”温度在电子设备的性能和可靠性中起着关键作用。此外，“玻璃转变”还对材料的加工产生影响，影响它们如何被模压、挤出或以其他方式形成最终产品。例如，如果聚合物在其 Tg 以下的温度下加工，可能会导致缺陷或成型不完全，从而影响产品质量。因此，理解“玻璃转变”对旨在创造高性能材料的工程师和设计师至关重要。除了其技术方面，“玻璃转变”还提供了对材料基本性质的洞察。一个看似固体的结构在某些条件下可以表现出液体特性，这一事实挑战了我们对固体和液体的传统认识。这种二元性不仅从科学角度令人着迷，而且为材料设计的研究和创新开辟了新的途径。总之，“玻璃转变”现象是非晶材料（特别是聚合物）行为的关键因素。它的影响遍及各个行业，影响从产品性能到制造过程的一切。通过更深入地理解“玻璃转变”，我们可以更好地利用材料的特性，以满足现代科技的需求，并改善日常产品。随着研究的不断发展，“玻璃转变”的影响无疑将引领材料科学和工程领域的激动人心的进展。