Excellent Leveling Blended Polyester Resin for Outdoor Matting Powder Coatings
Introduction
N8081 and NH8505 are high and low acid value polyester resins respectively, which are used in polyester/TGIC powder coating systems. Using N8081 and NH8505 to make powder respectively and then dry mixing to make outdoor semi-gloss powder coating.
Since its introduction in the 1970s, powder coatings are 100% solid because they do not contain organic solvents. Compared with conventional coatings, powder coatings have the advantages of no pollution, energy and resource saving, the high mechanical strength of the coating film, and complete recycling of excess coatings, etc. Advantages, it is more and more widely used in the coating of household appliances, the automobile industry, office appliances, metal materials, outdoor buildings, and other shells. As customers' requirements for powder coatings are getting higher and higher, matte powder coatings are widely used in the industry as a variety with better decorative properties. At present, in the field of matting powder coatings, matting is mainly achieved by adding physical or chemical matting agents, and in order to obtain a lower gloss, it is often necessary to add a larger amount of matting agents. The addition of a large amount of matting agent greatly improves the matting performance of the powder coating but also reduces other properties of the coating.
The dry mixing matting method is a matting method that has emerged in recent years. When powder coatings with different curing speeds are mixed by the dry mixing method, the gloss of the resulting coating film will be significantly reduced, which will play a matting effect. In this way, the addition of matting agents is avoided, which not only reduces the cost but also solves the problem of poor coating leveling.
Basic Features
Excellent leveling and fine coating
Good mechanical properties and weather resistance
Recommend Formulation:
| Formulation | NH8081 | NH8505 | TGIC | R930 | BaSO4 (44HB) | PV-88 | Benzoin |
| I | 270 | — | 30 | 75 | 125 | 3 | 1.5 |
| II | — | 285 | 14.2 | 75 | 125 | 3 | 1.5 |
| Formulation | NH8081 | NH8505 | TGIC | R930 | PV-88 | Benzoin |
| I | 270 | — | 30 | 150 | 3 | 1.5 |
| II | — | 285 | 14.2 | 150 | 3 | 1.5 |
Specifications I
| Items | NH8081 | NH8505 |
| Appearance | Pale yellow flake | Pale yellow flake |
| Acid Number (mgKOH/g) | 49～55 | 19～24 |
| Softening Point (℃) | 105～115 | 103～113 |
| Glass Transition Temp. (℃) | ～67 | ～62 |
| Melting Viscosity (ICI, mPa·s) | 7000-9500 | 5300-6300 |
| Reactivity s (180℃, 10,5% TGIC) | 50-100 | 250-360 |
| Curing Requirement | 200℃×10min |
| Packaging | PE Bags, Net Weight 25kg ± 0.1kg / bag |
Specifications II
| Extrusion Condition | Two-screw Extruder | 110～120℃ |
| Speed of Revolution | 500～1200rpm |
| Fineness of Powder | ＜100μm |
| Extrude NH8081 and NH8505 respectively according to the formula, and mix and pulverize in a ratio of 1:1 to make powder. |
| Application Condition | Electrostatic Spraying With | 40～70KV |
| Coating Film Thickness | 50～70μm |
| Degreased Cold-rolled Steel | 0.5mm |
| Film Properties | Gloss (60°) | ≤35% |
| Bending (φ1mm) | Pass |
| Adhesive (1mm, grade) | 0 |
| Pencil Hardness | ≥H |
| 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), a listed enterprise 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!
We have gained ISO9001 and ISO14000, ISO18001, RoHS, UL certification and QUALICOAT Certificate. Due to the excellent and stable quality, our products always enjoy high reputation at home and oversea, and were sold to more than 30 countries.
Polyester resin branch was founded in 2000, now there are two factories (DongGuan factory and TaiXing Factory) with annual production capacity over 80,000 tons, and the annual production capacity reached 120000 tons by the end of 2020, opening the road to global diversified development. Our clients include many top-tier powder manufacturers in the world such as AKZO, PPG, TIGER, PROTECH, NIPPON, OXYPLAST, JOTUN, SHERWIN, VALSPAR, SINTERPLAST, etc.
We unremittingly stick at the business principle of “Quality is the life, adhere to first-class technology, first-class quality, first-class cost and first-class brand”. We would like to provide a complete set of services and solutions for both domestic and abroad customers and would like to go forward to brilliant future with you together.
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