Matt Hardener (TP68)
1.Description
Matt Hardener TP68 is a composed salt of cyclic-amidine and multi-acid. It utilizes the two different reaction rates of group in molecular structure, and during the curing process, it generates non-uniform shrinkage then forms the matt surface. It has both gloss decreasing and curing functions.
2.Technical Parameters
| Item |
Test Methods |
Specification |
| Appearance |
Visual |
Fine White Powder |
| Melting Range(ºC) |
GB/T617-2006 |
230-250 |
| Acid value: |
|
460-480 |
| Purity(%) |
GB/T1725-2007 |
≥99.00 |
| Curing Condition:180ºC 20-25min 190ºC 10-12min 200ºC 8-10min |
3.Application
It is used for pure epoxy resin, epoxy\polyester hybrid powder coatings to achieve coatings with matt surface, excellent mechanic quality and wonderful appearance.
4.Reference formulation
| Item |
Epoxy |
Epoxy-Polyester |
| Epoxy Resin E12 |
110 |
440 |
| Polyester Resin TP5050 |
|
60 |
| Matt Hardener TP68 |
9 |
38 |
| Flowing Agent TP503 |
8 |
10 |
| Moistening Agent TP701 |
1 |
6 |
| Benzoin |
1 |
4 |
| Titanium Dioxide R902 |
|
1 |
| Filler(BaSo4 ,CaCo3) |
65 |
1 |
| Carbon Black |
0.8 |
1 |
| Gloss 60° |
<5 |
10-20 |
| Visual inspection |
Flow and smoothly |
Flow and smoothly |
| Impact (positive/back flush) |
50/40 |
50/50 |
| Adhesion (cross-cut method) |
100% pass |
100% pass |
5.Notice
Matt Hardener is not as compatible with the resin as it has a high melting point. To avoid this default it's necessary to distribute them or to make the curing temperature at a higher level. In case of epoxy\polyester hybrid powder coatings, the polyester should be low acidity. Before achieving the ideal gloss and multiple characteristics tests are needed.
6.Package & Storage & Handling
- Store in a cool, dry place and avoid contact with other chemical products. Sealed after use. Since this product is irritating to the respiratory tract, wear a dust mask and gloves during operation.
- Package: 25kgs/polyethylene-lined Kraft paper-plastic compound bag.
- It is valid for one year at room temperature.
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