How to Choose a Curing Agent
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Ongoing, Unang na-publish Aug 26, 2021
https://www.wsxchem.com/how-to-choose-a-curing-agent.html


(1)CONSIDER THE VARIETIES AND PERFORMANCE OF THE CURING AGENT

The varieties of curing agent have a great influence on the mechanical properties, heat resistance, water resistance, corrosion resistance of the curing agent, such as aromatic polyamines, imidazole, acid anhydride curing agents for epoxy resins. The heat resistance of cured epoxy resins is better than that of aliphatic polyamines and low molecular polyamide curing agents; Aromatic anhydride cured epoxy resins have better water resistance than curing agents of aromatic diamines and aliphatic polyamines; Triethylenetetetramine curing agent has good alkali-resistance, but it is less resistant to acid and formaldehyde solutions. The alicyclic polyamines (such as isophorone diamine) cure epoxy resins have excellent drug resistance. The alkali resistance of acid anhydride curing agent cured epoxy resins is better than its acid resistance. Therefore, the appropriate curing agent should be selected according to different purposes and performance requirements.
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