Low-Temperature Cure Powder Coating Polyester Resin for Hybrid Powder Coatings
◎Introduction
HH2762 is a carboxyl polyester resin designed for 70/30 hybrid low temperature curing powder coatings.
In recent years, natural disasters caused by global warming have become more and more frequent, prompting the continuous improvement of people's environmental awareness and environmental protection standards. Powder coating fully conforms to the internationally popular 4E (economic, environmental protection, high efficiency, and excellent performance) principles. The energy-saving and emission reduction advantages of low-temperature curing powder coatings are more prominent, and they have attracted widespread attention in the industry and become the development direction of powder coatings.
The film-forming and curing temperatures of ordinary powder coatings are 180~220℃, and the baking time is 15~25min. The curing time of HH2762 is 160℃ for 10-15 minutes. Compared with traditional high-temperature curing powder coatings, the film-forming temperature is lower, which can save a lot of energy. Some data show that every 10°C drop in the curing film-forming temperature of the coating can save about 10% of energy.
◎Basic Features
Outstanding mechanical properties
Good Chemical resistance
TMA free
◎Recommend Formulation:
| HH2762 |
014U |
TiO2 (R760) |
BaSO4 8000 |
Leveling |
Benzoin |
701 |
| 210 |
90 |
102 |
90 |
4 |
2 |
2.5 |
◎Specifications I:
| Appearance |
white or light yellow transparent flakes
|
| Color (50%DMF) |
max:3 |
| Acid Value (mgKOH/g) |
29～35 |
| Softening Point (℃) |
98～103 |
| Glass Transition Temp. (℃) |
～53 |
| Melting Viscosity (200℃, cone/plate, mPa·s) |
3500～5500
|
| Reactivity at 180℃ (s, 7% TGIC) |
70～150
|
| Curing Requirement |
160℃×10~15min |
| Packaging |
PE Bags, Net Weight 25kg ± 0.1kg / bag |
◎Specifications II:
| Extrusion Condition |
Two-screw Extruder |
|
Zone I: 90～110℃
|
Zone II: 110～120℃
|
| Speed of Revolution |
500～1200rpm |
| Fineness of Powder |
＜100μm |
| Application Condition |
Electrostatic Spraying With |
40～70KV |
| Coating Film Thickness |
50～70μm |
| Degreased Cold-rolled Steel |
0.5mm |
| Film Properties |
Gel Time (180℃, sec) |
70~160 |
| Horizontal Flow (180℃, mm) |
20~24 |
| Gloss (60°) |
≥90% |
| Bending (φ1mm) |
Pass |
| Adhesive (1mm, grade) |
0 |
| Pencil Hardness |
1H |
| Impact (50cm) |
Pass |
◎Remarks:
All the polyester resins could be customized to Non-tin (A), anti-gas burners (G), tribo gun (T), and anti-blooming (F).
◎Company Profile:
Kinte Materials Science and Technology Co., Ltd. is subordinate to China Machinery Industry Corporation (a key state-owned enterprise directly managed by SASAC, ranking 284 among the world's top 500 in 2021). It is a national high-tech enterprise under China National Electric Apparatus Research Institute Co., Ltd. (Stock Code: 688128), listed on the SSE STAR MARKET. Focusing on the R & D, production, and sales of environmentally friendly coatings (powder coatings, waterborne industrial coatings) and powder coating resins, the company is committed to improving the global market competitiveness of China's environmentally friendly coating industry. Now it has become the leader and promoter in China’s technological development of environmentally friendly coatings as well as polyester resins for powder coatings!
In 2017, the new production base with 80000 tons annual capacity was put into construction in Dongguan, Guangdong, and the annual production capacity reached 120000 tons by the end of 2020, opening the road to global diversified development.
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Low Temperature Cure Powder Coating Polyester Resin For Hybrid Powder Coatings Images
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