With the continuous maturity of China's new energy vehicle industry, the performance verification of sealants used in electronic control is becoming more and more perfect, especially in recent years, more and more electronic control manufacturerssealantA requirement for salt spray testing has been proposed.

At present, there are mainly two mainstream methods for salt spray testing of automotive electronic control:

1. Neutral Salt Spray Test (NSS)

This is the most basic salt spray testing method, using a 5% sodium chloride solution,沉降量控制在1~2ml/80cm²·h，pH值控制在6.5~7.2，试验温度为35℃±2℃，Relative humidity>95%.This method is widely used to evaluate the corrosion resistance of automotive electronic control components.

2、循环盐雾测试（CCT）

To simulate the wet dry alternation and salt spray impact in actual usage environments, the cyclic corrosion test combines multiple stages such as salt spray, drying, and wet heat,以验证其在复杂环境下的可靠性。

According to different enterprise standards, the salt spray testing time for automotive electronic control is usually between 168 hours and 1500 hours.目前行业内主流的盐雾测试标准有：

GB/T 15985-2004：汽车盐雾试验的基础方法

GB/T 31467.3-2015：电动汽车动力电池系统的安全性要求，明确盐雾测试为必检项目

QC/T 895：车载充电机的专项测试规范