| 1.Specification |
Appearance: |
crystal or flakes in light yellow or white powder |
| Melting range: |
85-101C |
| Pruity: |
>95% |
| 2.Application |
a.curing agent for highly reactive epoxy resin powder coatings, enabling a fast curing under the condition of 140%/10 ЁC15min, or 200%/3-5min. |
| b.Accelerator for dicyan dialnide and epoxy polyester powder. |
| c.Curing agent for adjusting the surface gloss. |
| 3.Instruction |
a.Recommending formula |
ITEM |
I
|
II
|
| Epoxy(663U or E-12) |
56
|
50
|
| Polyester(high acidity) |
-----
|
50
|
| MB31 |
3.5
|
0.05-0.3
|
| Levelling agent |
0.5
|
0.5
|
| Titanium white or other filler |
40
|
40
|
| b.recommending curing condition |
ITEM /I: |
140C |
15-20Min |
| 160C |
8-10Min |
| 200C |
3-5Min |
| 250C |
45SECONDS |
| ITEM /II: |
160C |
15-20Min |
| 170C |
10-15Min |
| 180C |
5-10Min |
| 4.Notice: |
a.Don't mix other curing agent with MB31 for its highly reactive characterisic.The result of mixing will alter the coatingЎЇs surface tension and consequently a poor light and bad surface are unavoidable. |
|
b.In the process of making powder coatings, put togather epoxy resin, fiiller and MB31 when they are dry.Fully mix them in an proper extruder with the extruding temperature below or at 100Ўж.The time they stay in the extruder should be short to avoid connection ahead of time .the extruded should be cooled down without delay to avoid unnecesssary chemical reaction.
|
| 5.Storage: |
MB31 could be stored well for a long period in a sealed container, whenever the sealed container is open seal it again.
|
