Test solution of similarities and differences of neutral salt spray test in different countries
The salt spray test chamber is one of the most widely used equipment for environmental test equipment. The salt spray test is also divided into neutral and acidic. As one of the most important indicators for measuring the corrosion resistance of coatings such as electroplating or paint, resin, plastic, nylon, etc., it is widely used in countries around the world. Anti-salt spray performance is often used as a single index or primary index for anti-corrosion performance experiments. This chapter analyzes the neutral salt spray test method of the salt spray test chamber in China and the test methods of foreign countries: Comparison of test solutions: China: NaCI distilled water solution NaCI mass concentration (50 ± 5) g / l pH value 6.5 ～ 7.2 United States: NaCI distilled water solution NaCI mass concentration 5% ± 1% pH value 6.5 ~ 7.2 Germany: NaCI distilled water solution NaCI mass concentration (50 ± 5) g / l pH value 6.5 ～ 7.2 Japan: NaCI distilled water solution NaCI mass concentration 5% ± 1% pH pH value 6.5 ～ 7.2 France: NaCI distilled water solution NaCI mass concentration 5% pH value 6.5 ～ 7.2 There are three types of salt spray test: neutral salt spray test (NSS), acetate salt spray (AASS) and copper accelerated acetate salt spray (CASS, also known as copper chloride acetate spray). The most widely used are Neutral salt spray test. Test solution of similarities and differences of neutral salt spray test in different countries
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