產品展示
TP3328 MATT HARDENER
Description
TP3328 is a matting?agent?with TGIC as co-reactant, which can provide?low-gloss of ca.10% (60°), good impact and exceptional flow properties?for exterior durable PES/TGIC powder coatings. It may also be used in both epoxy and epoxy/polyester hybrid powder coating with low-gloss finish.
Technical Parameters
Item |
Test Methods |
Specification |
Appearance |
Visual |
Very?fine?pale yellow?powder |
Chemical Equivalent Weight (g/e?q) |
Calculation |
92 |
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Characteristics
1.Can provides low gloss of ca.10% (60°), exceptional flow and good mechanical properties such as direct impact for PES/TGIC based exterior durable powder coatings.
2.Curing at 200℃(metal temperature) are required for both better flow and impact properties.
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Use method & levels
1.?TP3328 with other components?of the formula before extrusion.
2. The use level is 1-5% by total weight of formulation, depends on the gloss required.
3.?1.1-1.2 parts of TGIC per weight part of TP3328 based on their chemical equivalent weights. Varying their total concentrations of in the formulation can control different gloss levels of coating when both ratios were retained at above fixedness.
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Reference formulation
Polyester Resin TP9035 |
200 |
TGIC |
28 |
Matt Agent TP3328 ????? |
12 |
Flowing Agent TP88 |
4 |
Titanium Dioxide |
50 |
Matt BaSO4? |
120 |
Adding 2.8% TP3328 of total powder coating formulation reach up to gloss level of 22%
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Package & Storage & Handling
1.?Packaging with PE lined Kraft paper bags.Net weight?25kgs per bag.
2.Store in temperature between 2-32℃?or cool dry place.?Stay?away from heat and fire.
3.Based on our experience the shelf life of TP3328 under above conditions is at least 2 years.
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Advisement
1.When formulating TP3328,the gloss of coating will be determined by its concentration and the selected polyester resins. It is important to select matched resins.
2.The powder coating formulated by TP3328 have a bit yellowing tendency and poor wet-thermal resistance.
