acid number

简明释义

酸值

英英释义

例句

1.A high acid number 酸值 in fats can indicate rancidity.

脂肪中的高酸值 acid number 可能表明变质。

2.To ensure quality, the manufacturer tests the acid number 酸值 of each batch of lubricant.

为了确保质量，制造商测试每批润滑剂的酸值 acid number。

3.The acid number 酸值 is crucial for assessing the quality of biodiesel.

评估生物柴油的质量时，酸值 acid number 是至关重要的。

4.The oil's acid number 酸值 indicates its level of acidity and potential for oxidation.

油的酸值 acid number 表示其酸性水平和氧化的潜在可能性。

5.Regular testing of the acid number 酸值 helps maintain the performance of engine oils.

定期测试酸值 acid number 有助于保持发动机油的性能。

作文

The concept of the acid number is crucial in various fields, particularly in chemistry and material science. The acid number is defined as the measure of the amount of acid present in a substance, typically expressed in terms of the number of milligrams of potassium hydroxide (KOH) required to neutralize one gram of the sample. This measurement is particularly important for understanding the properties of oils, fats, and other chemical compounds. In the context of lubricating oils, for example, the acid number indicates the level of acidity that can affect the performance and longevity of the oil. A higher acid number suggests that the oil may be degrading or reacting with contaminants, which could lead to increased wear on machinery parts. Therefore, regular testing of the acid number helps in determining when an oil change is necessary, ensuring optimal performance and protection for engines and mechanical systems.In addition to its significance in lubrication, the acid number also plays a vital role in the production of biodiesel. During the transesterification process, the acid number of the feedstock must be assessed to ensure that it is suitable for conversion into biodiesel. Feedstocks with a high acid number require additional steps to reduce acidity before they can be effectively processed. This is essential because high acidity can lead to soap formation during the transesterification reaction, which can hinder the yield of biodiesel.Moreover, the acid number is also used in the food industry, particularly in assessing the quality of edible oils. In this context, a low acid number is indicative of fresh oil, while a high acid number may signal rancidity or spoilage. Monitoring the acid number of cooking oils can help consumers make informed choices about their dietary options and maintain their health.Furthermore, the acid number has implications in the field of polymers and plastics. For instance, the acid number can influence the curing process of resins used in coatings and adhesives. Understanding the acid number allows manufacturers to fine-tune their formulations to achieve desired properties, such as adhesion strength and durability.In conclusion, the acid number is a fundamental parameter that provides valuable insights across multiple industries. Whether in lubrication, biodiesel production, food safety, or polymer manufacturing, understanding and monitoring the acid number is essential for maintaining quality and performance. As technology advances and industries evolve, the importance of accurately measuring the acid number will only continue to grow, highlighting its role as a key indicator of chemical reactivity and product stability.

“酸值”这个概念在多个领域中至关重要，特别是在化学和材料科学中。“酸值”被定义为物质中酸的含量的测量，通常以中和一克样品所需的氢氧化钾（KOH）毫克数表示。这一测量对于理解油、脂肪和其他化合物的性质尤为重要。例如，在润滑油的上下文中，“酸值”指示了可能影响油的性能和使用寿命的酸度水平。较高的“酸值”表明油可能正在降解或与污染物反应，这可能导致机械部件的磨损增加。因此，定期测试“酸值”有助于确定何时更换油，以确保发动机和机械系统的最佳性能和保护。除了在润滑方面的重要性外，“酸值”在生物柴油的生产中也起着至关重要的作用。在酯交换过程中，必须评估原料的“酸值”，以确保其适合转化为生物柴油。具有较高“酸值”的原料需要额外的步骤来降低酸度，然后才能有效加工。这一点至关重要，因为高酸度会导致在酯交换反应中形成肥料，从而妨碍生物柴油的产率。此外，“酸值”在食品行业中也被使用，特别是在评估食用油的质量时。在这种情况下，低“酸值”表明油的新鲜，而高“酸值”可能表明油的酸败或变质。监测烹饪油的“酸值”可以帮助消费者做出明智的饮食选择，并保持健康。此外，“酸值”在聚合物和塑料领域也有影响。例如，“酸值”可以影响用于涂料和粘合剂的树脂的固化过程。了解“酸值”使制造商能够微调其配方，以实现所需的性能，例如附着力强度和耐久性。总之，“酸值”是一个基本参数，为多个行业提供了宝贵的见解。无论是在润滑、生物柴油生产、食品安全还是聚合物制造中，理解和监测“酸值”对于维持质量和性能至关重要。随着技术的进步和行业的发展，准确测量“酸值”的重要性只会继续增长，突显其作为化学反应性和产品稳定性关键指标的角色。