Time： Popularity：0times
Definition: This is an environmentally friendly coating primarily composed of polyester resin, offering excellent weather and corrosion resistance. It is applied directly to metal surfaces via an electrostatic spray process, forming a hard coating. Polyester powder coatings are widely used in construction, automotive, and home appliance applications, favored for their decorative and durable properties.
Classifications: Polyester Resin Coating, Unsaturated Polyester Coating, Saturated Polyester Coating, Terephthalate-Based Polyester Coating.
Definition: A specialty powder coating with enhanced weather resistance, corrosion resistance, and mechanical properties through molecular structure optimization (such as the addition of modified composite materials) or patented technologies.
Classifications: Thermosetting Powder Coatings, Thermoplastic Powder Coatings, Fluororesin Powder Coatings, Polyester Powder Coatings, Acrylic Resin Powder Coatings, etc.
In terms of resin type, Polyester Powder Coating primarily utilizes hydroxyl polyester resins or carboxyl polyester resins. Hydroxyl polyester resins offer unique advantages. It can effectively improve the powder coating transfer rate during electrostatic spraying, ensuring more uniform adhesion to the workpiece surface and reducing paint waste. It also reduces the risk of yellowing during the baking process and ensure color stability. Carboxyl polyester resins, on the other hand, are known for their excellent weather resistance, resisting UV rays, rain, temperature fluctuations, and other factors in long-term outdoor environments, maintaining the coating's performance and appearance.
The choice of curing agent also has a significant impact on the performance of polyester powder coatings. Common curing agents include TGIC and HAA. TGIC curing agent offers strong weather resistance, ensuring long-term stability in harsh outdoor conditions. However, it is highly irritating, requiring strict protective measures during production and use. HAA is an environmentally friendly curing agent that meets today's stringent environmental requirements, but its weather resistance is slightly weaker than TGIC.
In terms of cross-linking, the resin in polyester powder coatings chemically reacts with the curing agent to form a network of cross-linked structures. This structure imparts excellent flexibility to the coating, allowing it to adapt to slight deformation of the workpiece during use without cracking. It also boasts excellent impact resistance, effectively withstanding external impacts. Furthermore, its cross-linked structure provides moderate weather resistance, meeting the requirements of typical outdoor environments.
Super Durable Powder Coating utilizes in-depth research and innovation in resin modification. By adding modifiers such as nano-oxides and fluorocarbon resins, the resin's molecular chain structure is optimized. Nano-oxides fill the gaps between resin molecules, creating a tighter molecular arrangement and improving the coating's density. Fluorocarbon resins, with their excellent chemical stability and weather resistance, further enhance the coating's performance.
In terms of curing technology, Super Durable Powder Coating utilizes blocked isocyanates and a two-component curing system. Blocked isocyanates release reactive groups under specific conditions, reacting with the resin to enhance the coating's impermeability, preventing moisture, gases, and other substances from penetrating the coating. The two-component curing system provides enhanced chemical resistance, making it resistant to attack by various acids, bases, solvents, and other chemicals.
Super Durable Powder Coating also utilizes patented technologies, such as a molecular-level hydrophobic structure and UV-resistant degradation mechanisms. The molecular-level hydrophobic structure forms a hydrophobic film on the coating surface, effectively preventing moisture adhesion and penetration. The UV-resistant degradation mechanism absorbs or reflects UV rays, reducing UV damage to the coating and significantly extending its lifespan.
Polyester Powder Coating: The weatherability of polyester coatings primarily depends on the properties of the resin. Polyester resin is a key material in powder coatings, and its properties play a decisive role in its weatherability. Polyester powder coatings exhibit poor durability in environments with high humidity, heat, and radiation, necessitating the development of polyester resins to address this issue. Research has shown that optimizing the molecular weight and distribution of polyester resins can significantly improve their mechanical properties. Furthermore, the introduction of monomers with specialized functions, such as those containing siloxane groups or fluorides, can further enhance the weatherability and UV resistance of polyester coatings.
Super Durable Powder Coating: The weatherability of Super Durable Powder Coating is key to maintaining their performance under extreme environmental conditions. The coating typically utilizes high-performance polyester resins, fluororesins, and other materials, cured at high temperatures to form a three-dimensional network structure. It offers excellent chemical and UV resistance. It resists degradation from natural environmental factors such as UV rays and acid rain, ensuring it maintains aesthetics and functionality even in harsh conditions.
Polyester Powder Coating: Impact resistance and flexibility meet general industrial requirements.
Super Durable Powder Coating: Ultra-durable coatings offer strong adhesion, high abrasion resistance, and impact resistance. These properties ensure durability and reliability in a variety of environments.
Polyester Powder Coating: Pass salt spray tests (500-1000 hours), making them suitable for coastal or humid environments.
Super Durable Powder Coating: Pass salt spray tests (>2000 hours), resist acid, alkali, and organic solvent penetration, making them suitable for chemical equipment and offshore platforms.
Polyester Powder Coating: Available in a variety of finishes, including high gloss, matte, and metallic effects, with moderate color stability.
Super Durable Powder Coating: Their color richness is comparable to polyester, but with a color difference ΔE less than 1.5 under long-term outdoor use, resulting in superior color retention.
Mainly used in architectural aluminum profiles, home appliances, furniture, automotive manufacturing, agricultural machinery, metal furniture, security doors, guardrails, and electronic appliances.
Super Durable Powder Coating is widely used in the construction, home appliance, piping, pipe fittings, and valve industries. It offers enhanced durability, corrosion resistance, and environmental sustainability, and is suitable for building products such as aluminum profiles, doors and windows, walls, ceilings, and composite panels. In the home appliance industry, powder coatings account for approximately 60% of total coating volume, covering products such as refrigerators, washing machines, air conditioners, ovens, and kitchenware. In the piping, pipe fitting, and valve industries, hot-melt-bonded epoxy (FBE) powder coatings are crucial for corrosion protection, ensuring long-term durability in harsh environments such as sand and oceans.
In conclusion, Polyester Powder Coating and Super Durable Powder Coating each have their distinct characteristics and areas of application. Polyester powder coating, with its environmentally friendly nature, diverse classifications, and relatively good all-around performance, is widely adopted in various common industries such as construction, automotive, and home appliances. They offer a cost-effective solution for projects that do not require extreme levels of durability and weather resistance.
Company Phone
+86-21-6420 0566
Working hours
Monday to Friday
Mobile phone:
13816217984
Email:
info@qinsun-lab.com
