GY MC120D is imidazole type hardener (curing agent) and accelerator for one-component epoxy resin compound. As accelerator, it can low down  hardening temperature and shorten hardening time when using dicyandiamide.MC120D is applied in electronic adhesive and sealant.
1. Physical characteristics:
            Appearance      Yellowish powder
            m.p.            135~150℃
            Size,d90         10um
2. Typical formula A

Epoxy resin (EEW=190)	100
MC120D	20
Fumed silica	1

Gel time(℃/min):
                  80/90;90/60;100/25;110/15;120/10;130/8;140/4;150/3.
Pot life: 40℃/4weeks
Typical formula B

Epoxy resin (EEW=190)	100
Dicyandiamide	8
MC120D	3(Ranging from 1 to 5)
Fumed silica	1

Gel time:
                  120℃/30min.
Pot life: 40℃/6weeks

The technic data(after hardening according to formula B)
      Temperature ℃   Tensile strength(kg/cm²)
            25               222
            80               220
            120              190
            140              170
            160              132
Note：MC120D is microcapsuled type hardener，diluent or solvent should be avoided in formula.