Guangzhou Quanxu Technology Co.,Ltd.
Guangzhou Quanxu Technology Co.,Ltd.
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Matt Hardener HS Code: 3906909000 Used For Epoxy or Hybrid Powder Coatings
Specifications
Matt Hardener HF68 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 nonuniform shrinkage then forms the matt surface. It has both gloss decreasing and curing functions.
Physical Performance
| ITEMS | TEST METHOD | HF68 |
| Appearance | Visual inspection | White powder |
| Melting Range(℃) | GB/T617-2012 | 210-230 |
| Solid content(%) | GB/T1725-2011 | ≥99.0 |
| Curing condition: 180℃ 15～20min, 190℃ 10～15min, 200℃ 10～12min | ||
Properties
| Type of Matt Hardener | Matt Hardener HF68 | |
| Type of Powder Coating | Hybrid | |
| Gloss(60°)% | 5-8 | |
| Impact Strength(kg*cm) | ≥50 | |
| Cross-hatch Adhesion | Grade 1 | |
| Levelability of Film | Smooth | |
Recommended Formulation
| Type of Powder Coating | Hybrid |
| Polyester Resin (Weight %) | 53 |
| Matt Hardener (Weight %) | 4.5 |
| Levelling Agent (Liquid,Weight %) | 1 |
| Filler & Pigment (Weight %) | 41 |
Feature
1, Due to HF68 has a higher melting point, it’s very important to evenly disperse it in formulation. The users can suitably increase the extruding temperature to make sure the good dispersion (don’t exceed 110℃).
2, In hybrid matting powder system, the polyester resin with low acid value should be selected, and it can be determined by the tests in order to obtain perfect gloss and optimal comprehensive properties.
3, Dosage: E-12: HF68 mass ratio: (8-10):1.