Is the epoxy resin curing agent a little better cashew nutshell phenol or polyamide a little better ah?

These two are epoxy curing agent, cashew nutshell phenol was originally developed by the United States Carteret Manufacturing.

The two compared to the waist of good corrosion resistance, low temperature curing performance, relatively cheap, but easy to yellow, curing material slightly brittle;

Poly corrosion resistance and with the proportion of the corrosion, but also has a better corrosion resistance and adhesion properties, but because of the viscous and the use of inconvenience, low-temperature curing performance is not good, but the flexibility is good.

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