论文部分内容阅读
乙二醇水溶液冰点表 乙二醇型发动机冷却液最关键的技术指标是腐蚀与冰点,而腐蚀试验也需要冰点做为试样制备的前提。《发动机冷却液腐蚀测定法》(玻璃器皿法)(SH/T0085-91)中6·2·3规定,要把试样配成冰点为-18±1℃的水溶液,而我们常用的发动机冷却液是乙二醇型的,标准中在此处却没有给出一个乙二醇与水混合液从0％～100％的常用含量与冰点关系的附表或曲线图,给标准操作者造成较大的困难,以至于有的操作者甚至免去了把试样配制成-18±1℃的准备过程,直接进行腐蚀试验。由于乙二醇型发动机冷却液冰点与其用量有关,而缓蚀剂用量又与乙二醇用量有关,所以,标
Glycolic solution freezing point Glycol type engine coolant is the most critical technical indicators of corrosion and freezing point, while the corrosion test also requires freezing point as a prerequisite for the preparation of the sample. 6.2.3 of the “Determination of Engine Coolant Corrosion” (Glassware Method) (SH / T0085-91) stipulates that the sample be diced into an aqueous solution with a freezing point of -18 ± 1 ° C, and our commonly used engine cooling Liquid glycol type, the standard here is not given a mixture of ethylene glycol and water from 0% to 100% of the commonly used content and freezing point of the schedule or graph, to the standard operator caused more Big difficulty, so that some operators even dispensed with the preparation of the sample preparation -18 ± 1 ℃ preparation process, the direct corrosion test. Because of glycol type engine coolant freezing and its dosage, and the amount of corrosion inhibitor and ethylene glycol consumption, so the standard