Latent Curing Accelerator
Ultra-micro latent PM2100 accelerator is a urea-modified product, which is perfectly compatible with epoxy resin. Epoxy resin one-component adhesives, sealing materials, potting materials and various powder coatings prepared with this accelerator are featured with the small dosage (2-5% of the resin), non-curing at the room temperature, over half year storage life at the room temperature (25 °C), quick curing (within 30 min) at 120-130 ℃. The detailed performance is shown in the following table:
1. Technical performance of the one-component potting material prepared with 2-3 % PM2100 accelerator (curing agent : accelerator = 5 : 1):
|
Curing conditions
|
Curing shrinkage
|
Volume resistivity
|
Breakdown voltage
|
Dielectric constant
|
Tangent of the dielectric loss angle
|
Shelf life
|
|
130 °C 30 min 150 °C 20 min
|
1 %
|
5×1,015 Ω cm
|
28 kv / mm
|
3.8
|
3×10-2
|
> 6 months
|
2. Comparison of the Performance of vehicle folding adhesives prepared with PM2100 accelerator and other accelerators:
|
Accelerator
|
Tertiary amine salt
|
Imidazole salt
|
A100 accelerator
|
Phenate
|
Amine salt
|
|
Gelation time T (160 ℃)
|
1 min 50 sec
|
1 min 4 sec
|
2 min 35 sec
|
8 min without gelation
|
8 min without gelation
|
|
Shear strength (Mpa) 160 ℃ 30 min
|
27
|
23.6
|
28
|
|
|
Remarks: PM2100 has higher activity, better storage conditions, and can meet more stringent environmental protection requirements than others.
