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Hardener MB-55
JFTM Hardener MB-55(Same as Degussa VESTAGON B55 Matt Hardener) is Epoxy Resin Hardener /Epoxy Resin Curing Agent.It is used as hardener for pure epoxy resin , epoxy\ polyester hybrid powder coatings to achieve coatings with matt surface having excellent mechanic quality and wonderful appearance.
Characteristics | Appearance | fine powder(white) | ||||
Melting range | 220-225°C | |||||
Purity | >=99% | |||||
Application | Matt curing agent M68 for epoxy resin and epoxy polyester hybrid powder coatings is used to achieve coatings with matt surface having excellent mechanic quality and wonderful reappearance. | |||||
Specific instructions | Recommending formula | Gloss 60°C | 5-6 | 20 | 40 | 70 |
Epoxy(663U or E-12) | 54.5 | 39.7 | 35.7 | 31.8 | ||
Polyester(acid valve:25-35mgKOH/g) | ---- | 14.8 | 20.8 | 26.7 | ||
M68 | 5.0 | 5.0 | 40 | 1.0 | ||
Filling material(BaSo4,CaCo3) | 40 | 40 | 40 | 40 | ||
Levelling agent | 0.5 | 0.5 | 0.5 | 0.5 | ||
Carbon black | 0.5-1 | 0.5-1 | 0.5-1 | 0.5-1 | ||
Recommendingcuring condition | 180°C | 20-25 min | ||||
190°C | 10-12 min | |||||
200°C | 8-10 min | |||||
Notice | a.The M68 's compatibility with resin isn't well for its high melting point, to avoid this default it's necessary to distrbute them or to make the curing temperature at a higher level. | |||||
b.In the case of epoxy polyester hybrid powder coatings, the polyester used should be low ccidity.Before acid valve the ideal gloss and multiple characteristics tests are needed. | ||||||
Storage | The storage period could last a rather long time when it is kept inside the sealed container.Do seal the container again after taking some from it. |
Hardener MB 55