thermal aging

简明释义

热老炼

英英释义

例句

1.Researchers are studying the effects of thermal aging 热老化 on polymer materials used in electronics.

研究人员正在研究在电子产品中使用的聚合物材料的热老化影响。

2.The material showed signs of deterioration after undergoing thermal aging 热老化 for several weeks.

经过几周的热老化，材料显示出退化的迹象。

3.To evaluate durability, we conducted a thermal aging 热老化 test on the new alloy.

为了评估耐久性，我们对新合金进行了热老化测试。

4.Engine components are often tested for thermal aging 热老化 to ensure they can withstand high temperatures.

发动机部件通常会经过热老化测试，以确保它们能够承受高温。

5.The lifespan of insulation materials can be significantly reduced due to thermal aging 热老化.

绝缘材料的使用寿命可能因热老化而显著缩短。

作文

Thermal aging is a phenomenon that occurs in materials, particularly polymers and metals, when they are subjected to elevated temperatures over an extended period. This process can significantly affect the physical and chemical properties of the materials, leading to degradation, loss of mechanical strength, and changes in appearance. Understanding thermal aging (热老化) is crucial for engineers and material scientists as it helps them predict the lifespan and performance of materials in various applications.One of the primary concerns with thermal aging (热老化) is its impact on the mechanical properties of materials. For instance, polymers may become brittle and lose elasticity, which can lead to catastrophic failures in applications where flexibility is required. Metals, on the other hand, may undergo changes in microstructure that can result in reduced toughness and ductility. These changes can be particularly problematic in industries such as aerospace, automotive, and construction, where safety and reliability are paramount.The mechanisms behind thermal aging (热老化) involve several factors, including oxidation, cross-linking, and chain scission. Oxidation occurs when materials react with oxygen at high temperatures, leading to the formation of oxides that can weaken the material. Cross-linking refers to the process where polymer chains bond together, which can either enhance or degrade material properties depending on the extent and nature of the cross-links. Chain scission, on the other hand, involves the breaking of polymer chains, resulting in shorter chains that typically exhibit reduced strength and increased brittleness.To mitigate the effects of thermal aging (热老化), researchers are continually developing new materials and additives. For example, antioxidants are often added to polymers to inhibit oxidative degradation during high-temperature exposure. Similarly, coatings and surface treatments can be applied to metals to protect against oxidation and other forms of degradation. Additionally, understanding the specific conditions under which thermal aging (热老化) occurs allows engineers to design components that can withstand higher temperatures or have better longevity in harsh environments.In practical applications, evaluating the effects of thermal aging (热老化) is essential during the testing phase of product development. Accelerated aging tests can simulate long-term exposure to elevated temperatures, allowing researchers to observe how materials behave over time. This data is invaluable for making informed decisions about material selection and ensuring that products meet safety and performance standards.In conclusion, thermal aging (热老化) is a critical factor that influences the durability and reliability of materials used in various industries. By understanding the mechanisms involved and developing strategies to combat its effects, engineers and scientists can create safer and more effective materials for the future. The ongoing research into thermal aging (热老化) will undoubtedly lead to advancements that enhance the performance of materials under extreme conditions, ultimately benefiting society as a whole.