1. 有机硅耐热面漆 Silicone heat resistant finishSalt fog test

DreamTherm 400 topcoat is an important accelerated test to evaluate the corrosion performance of protective coating system. Is every corrosion protection coating engineer all need to understand.There are many standard methods forDreamTherm 400 topcoatsalt spray test, but the most commonly used to evaluate protective coatings is the neutral salt spray test.

same asDreamTherm 400 topcoatSalt spray experiment can be divided into two categories, one is the natural environmental exposure test, and the other is the artificial accelerated simulation of salt spray environment test. Generally speaking, the salt spray experiment generally refers to the latter, the commonDreamTherm 400 topcoatNeutral salt spray test (NSS), acetate salt spray test (ASS) and copper salt accelerated acetate spray test (CASS).

2. 有机硅耐热面漆 Silicone heat resistant finishsalt spray test

1) GB / T 1771-2007 determination of paint and varnish, equivalent to ISO 7253:1996 (but ISO7253 has been replaced by ISO9227).

2) ISO 9227-2012Corrosiontests in artificial atmospheres Salt spray tests, which specifies three salt spray test methods, including neutral salt spray test (NSS), acetate spray test (AASS), copper salt accelerated acetate spray test (CASS). Among them, the NSS test conditions and the provisions in the original ISO 7253 are basically consistent. Chinese standard GB / T 10125-2012, equivalent to ISO 9227:2006

3）ASTM B117 - 09 Standard Practice for Operating SaltSpray (Fog) Apparatus（Note: The latest 2016 revision is already available）。

Referring to the following table for the test conditions specified in the three standards:

3.有机硅耐热面漆 Silicone heat resistant finishLaboratory simulated salt spray can be divided into four categories:

1) Neutral salt spray test (NSS test) is the earliest accelerated corrosion test method in the most widely applied field. It uses 5% sodium chloride saline solution, the solution PH value in the neutral range (6.5~7.2) as the spray solution. The test temperature is taken at 35℃, and the settlement rate of the salt spray is required to be at 1~2ml / 80cm / h.

2) Acetate salt spray test (ASS test) is developed on the basis of neutral salt spray test. It is to add some glacial acetic acid in the 5% sodium chloride solution, so that the PH value of the solution is reduced to about 3, the solution becomes acid, and the salt mist formed finally also changes from the neutral salt spray to acid. It corrode about three times faster than NSS tests.

3) Copper salt accelerated acetate spray test (CASS test) is a newly developed rapid salt spray corrosion test developed abroad. The test temperature is 50℃, and a small amount of copper salt-copper chloride is added to the salt solution, which strongly induced corrosion. It has corroded about eight times faster than in NSS tests.

4) alternating salt spray test is a comprehensive salt spray test, which is actually neutral salt spray test plus constant damp heat test. It is mainly used in the cavity type of the whole machine products, through the penetration of the tidal environment, the salt spray corrosion not only on the surface of the product, but also inside the product. It is the product in the salt fog and hot and humid two environmental conditions alternately conversion, and the final assessment of the electrical performance and mechanical performance of the whole product have changed.

4. 有机硅耐热面漆 Silicone heat resistant finishsalt spray test

The test results of the DreamTherm 400 topcoatsalt spray test are generally given in a qualitative rather than a quantitative form. There are four kinds of specific judgment methods.

1) The rating judgment method is to divide the percentage of the ratio of the corrosion area to the total area into several levels according to a certain method, with a certain level as the basis for the qualification determination, which is suitable for the evaluation of plate samples.

2) Weighing judgment method is to weigh the weight of the samples by weighing the weight of the samples before and after the corrosion test. It is especially suitable for the assessment of the corrosion resistance quality of a certain metal.

3) the corrosion appearance determination method is a qualitative judgment method, it takes the salt mist corrosion test, whether the product produces corrosion phenomenon to determine the sample, this method is mostly used in the general product standards.

4) Statistical analysis method of corrosion data provides methods for designing corrosion test, analyzing corrosion data and determining the confidence degree of corrosion data. It is mainly used for the analysis and statistics of corrosion, rather than specifically for the quality judgment of a specific product.

5. Welcome to order theDreamTherm 400 topcoat

We expect that in the future development process, products and services will be recognized by everyone, at the same time, establish a good Corporate Culture and social responsibility, create excellent value for employees and customers, for the society and environment. In the future, we will always stay true to our original aspiration, forge ahead, continue to focus on the field of industrial anticorrosion, and strive to become a "trustworthy partner" in the eyes of customers. Protect your assets and enhance the value of your products through our professional and diversified services.

"Silicone high-temperature resistant paint is composed of silicone resin, special temperature-resistant corrosion-resistant pigments, additives, organic solvents, etc. It is used for high-temperature anti-corrosion on the outer walls of blast furnaces and hot blast furnaces. It can also be used for chimneys, flues, exhaust pipes, high-temperature Hot gas pipes, heating furnaces, heat exchangers and other metal surfaces require high temperature corrosion protection."

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