Epoxy resins are a class of synthetic thermosetting polymers that contain epoxide groups. The most commonly used epoxy resin is based on bisphenol A and epichlorohydrin, which has the chemical formula:
- Bisphenol A (BPA): \( C_{15}H_{16}O_{2} \)
- Epichlorohydrin: \( C_{3}H_{5}ClO \)
However, epoxy resins can be formulated in various ways, and there are many types of epoxy resins, so they don't have a single chemical formula.
As for the hardener, common hardeners for epoxy resins are amines, such as:
- Ethylenediamine: \( C_{2}H_{8}N_{2} \)
- Triethylenetetramine (TETA): \( C_{6}H_{15}N_{5} \)
Other hardeners might include anhydrides, polyamides, or other types of curing agents.
In summary, the specific chemical formulas of epoxy resins and their hardeners can vary widely depending on their composition.