Must - Know! The Compatible Dosages of Dicyandiamide in Various Adhesives
Jan 23, 2025| Must - Know! The Compatible Dosages of Dicyandiamide in Various Adhesives
The optimal dosage of dicyandiamide varies in different types of adhesives, as follows:
Epoxy Adhesives: For bisphenol A epoxy resin with an epoxy equivalent of 190, based on 100 parts by mass of the resin, the theoretical dosage of dicyandiamide curing agent is 11.1 parts, and the actual dosage often ranges from 4 to 10 parts. For E - 51 epoxy resin, the theoretical dosage is 11g per 100g of resin, and the actual dosage is generally 4 - 10g.
Water - based Epoxy Adhesives: As a curing agent for one - component water - based epoxy adhesives, the reference dosage is 7 parts.
Epoxy - polysulfone Adhesives: In epoxy - polysulfone adhesives, when there are 100 grams of epoxy resin, the dosage of dicyandiamide is 11 grams.
Composite Adhesives: In an environmentally friendly adhesive, calculated by weight parts, when there are 110 - 120 parts of E - type epoxy resin, the dosage of dicyandiamide is 3 - 7 parts.
Dicyandiamide is usually not the main curing agent or additive in adhesives such as acrylate adhesives and polyurethane adhesives, and it is generally used less frequently or there is no specific optimal dosage reference.