1. PEEK can withstand almost any chemical except fuming concentrated sulfuric acid, and it can maintain good chemical stability even at higher temperatures. With extremely strong chemical corrosion resistance, it is usually used to manufacture parts that work under harsh environmental conditions or need to undergo frequent disinfection treatment (such as chemical storage tanks, medical devices that need to be disinfected with strong oxidant hydrogen peroxide).

2. Although PEEK polymer has been widely considered as a material capable of withstanding extreme chemical corrosion, of course, the specific resistance of PEEK to certain corrosive media is also related to the crystallinity of PEEK parts, the residual internal stress, the temperature and concentration of the media contacted by the parts. For details, please refer to the following table (due to the large file, please download and view):

3. PEEK's chemical corrosion resistance characteristics are divided into the following three categories:

A: No erosion, little or no absorption;

B: Slight erosion, whether applicable depends on the application;

C: It is severely corroded and cannot be used in the presence of these chemicals.

4. See the attachment for the corrosion resistance of PEEK polymer to various organic and inorganic solvents:

The attachment contains the detailed performance data of PEEK's resistance to various solvents, which can be queried in the following categories:

◇ Corrosion resistance of PEEK polymer to various alkalis;

◇ Corrosion resistance of PEEK polymer to various alcohols;

◇ Corrosion resistance of PEEK polymer to various aldehydes and ketones;

◇ Corrosion resistance of PEEK polymer to various esters;

◇ Corrosion resistance of PEEK polymer to various ethers;

◇ Corrosion resistance of PEEK polymer to various organic chlorides;

◇ Corrosion resistance of PEEK polymer to various hydrocarbons;

◇ Corrosion resistance of PEEK polymer to various inorganic reagents;

◇ Corrosion resistance of PEEK polymer to other reagents;

◇ Corrosion resistance of PEEK polymer to organic nitrogen compounds;

◇ Corrosion resistance of PEEK polymer to phenol;

◇ Corrosion resistance of PEEK polymer to sulfide.