What is chemical resistance?
Chemical resistance is the extent to which a material can maintain its resistance to chemicals – protecting against chemical attack or solvent reaction, determining a material’s resistance to corrosive environments. Components that regularly come into contact with harmful chemicals (such as solvents, oils, salt or hydraulic fluids) are at risk of degradation. Materials with low chemical resistance lose their performance levels as the materials tend to swell or soften. Factors that impact a materials chemical resistance include:
- Chemical concentration
- Chemical substance the component is exposed to
- Degree of exposure (full, partial)
- Duration of exposure (permanent, temporary)
- Mechanical load
Coatings can prevent a chemical attack
Most coatings face some degree of chemical attack, for example cleaning agents, however these are typically mild and do not impact the integrity of a high-quality coating. When exposure is prolonged and more severe (for example oilfield machinery) a coating with high chemical resistance may be reqyured.
A chemically-resistant coating is a protective layer offering maximum protection to a surface, such as components which regularly come into contact with harmful chemicals. When selecting a coating for chemical resistance it is important to consider:
- Chemical resilience
- High thermal stability
- Low coefficient of friction
- Other high-performance properties
Thin films are always subject to some permeation but Whitford’s products are often used as additional protection over corrosion-resistant primers. Whitford’s powder products allow for increased thickness and permeation resistance. Discover our products here!
Whitford’s chemical resistant coatings have benefits for and are sold into various markets:
- Others: O-rings, Reprographics, Waste Water