Chemical exposure testing applications

It is vital that your products are able to withstand harsh conditions involved in your components’ end-use. Chemical exposure testing can determine your product’s stability when exposed to a chemical or substance, and can help you identify and resolve concerns relating to your product’s durability and lifetime. 

Compatibility studies can be performed to ASTM methods, your specifications, or a proprietary method. In addition, the testing can also be based on competitor claims or to duplicate a previous study. Read on for examples of applications of chemical exposure testing.

Evaluating a product for changes in appearance

In a recent chemical exposure study, a product was exposed to three different liquid environments over a seven day period. 在这种情况下, the entire product was sprayed with an acid, 一个基地, or an organic solvent once per day. The client asked that the entire product be evaluated for change in appearance of any part of the product including the label, 螺丝, mating areas of connected components parts and each component part itself. We provided the images below to our customer showing the acidic, alkaline and organic solvent effects on the products following the chemical exposure. This allowed our client to determine if the products would satisfactorily withstand the harsh conditions they could be exposed to.

Evaluating polymers for changes in weight, appearance and 抗拉强度

Our next study involved the exposure of three different polymers to two different solutions used in the oil industry. The study involved evaluating the sample at designated time intervals over varying temperature and solution conditions. At each stage of the chemical exposure experiment, our client asked for data (see table 1) relating to weight and appearance changes as well as 抗拉强度. The data was then provided to our customer enabling them to determine if their product would be fit for purpose.

What do you need for a chemical exposure evaluation?

Before a chemical exposure test can be performed, the parameters of the study must be defined.

Examples of these parameters include:

• 一个订单rtion of the sample to be exposed
• number of specimens exposed to each environment
• type of chemical environment
• length of exposure time
• criteria for evaluation

Evaluation criteria may include:

• 视觉评估
• 质量变化量
• 体积变化量
• dimensional changes such as length, 厚度, 直径, hardness evaluation, and other physical dimensions

Our 从事专家 will help guide your chemical exposure evaluation criteria to ensure the project scope meets your needs. 

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