Powder Epoxy Resins
Patent Certification
The company has 77 valid patents, 1 computer software copyright and intellectual property system certification, ISO9001 certification, ISO14001 certification, CE certification, explosion-proof certification, dual-soft certification and many other certifications.
Rich Experience
We have been serving the industry for over 15 years, and our experience makes us a prominent manufacturer and supplier.
Excellent Service
Our top priority is customer satisfaction, and we strive to provide exceptional service and competitive pricing, establishing long-term partnerships with our clients for more than 30 countries. Our dedication to quality and eco-friendliness ensures that our customers receive nothing but the best.
High-Tech Enterprise
The company is a national high-tech enterprise integrating research, design, manufacture of powder machinery and providing integrated solutions for powder production lines, the products mainly include mixers, extruders, cooling belts and grinding mills.The sales volume of the company's equipment &production line have been awarded rank No.1 by National Powder Coating Industry Center, and actively participate in the formulation of industry standards.
-
Epoxy Resin for Powder CoatingEpoxy resin is a highly versatile and prized component of thermosetting powder coatings, which are widely used for their excellent adhesive, anti-corrosion, insulating, and strengthening properties.Add to Inquiry -
Solid Powder Epoxy ResinSolid Powder Epoxy Resin are a versatile class of polymers with a plethora of positive properties.Add to Inquiry -
Solid Anti Corrosion Epoxy ResinEpoxy resin is a highly versatile and prized component of thermosetting powder coatings, which are widely used for their excellent adhesive, anti-corrosion, insulating, and strengthening properties.Add to Inquiry -
Bisphenol A Solid Epoxy ResinsBisphenol A Solid Epoxy Resins are highly versatile and widely used in a variety of applications.Add to Inquiry -
Transparent Epoxy Resin for Powder CoatingOur Transparent Epoxy Resin for Powder Coating offers exceptional chemical resistance, flow, and flexibility.Add to Inquiry -
Crystal Flake for Powder Epoxy ResinCrystal Flake For Powder Epoxy Resin is a kind of thermosetting, non-toxic coating, after curing to form a high molecular weight crosslinked structural coating,Add to Inquiry -
Saturated Hybrid Epoxy Polyester ResinSaturated Hybrid Epoxy Polyester Resin is a high-quality and environmentally friendly water-based resin that boasts an exceptional molecular weight and linear structure.Add to Inquiry
Powder epoxy resin is a type of thermosetting powder coating that is made up of epoxy resin, filler, and curing agents. Unlike liquid epoxy, which requires solvent evaporation or heat to cure, powder epoxy resin requires exposure to heat only, which causes the powder to melt, flow, and cure into a hard, durable coating.
Advantages of Powder Epoxy Resins
◆ Long-term uniform and durable protection, especially for metal.
◆ Extended product life.
◆ Reduced maintenance and replacement costs.
◆ Strong adhesion to structures, especially with pretreatments.
◆ Great resistance and barrier to corrosion and many chemicals.
◆ Flexible and wide range of cure schedules.
◆ Resistant to impact and abrasions.
◆ Greater insulation against electricity and a wide range of temperatures.
◆ Fast and inexpensive lamination process.
◆ Enhanced aesthetics with a wide range of colors, increasing product value.
◆ Higher efficiency than conventional liquid coatings.
◆ Faster cleanup procedures and reuse of powder coating equipment.
What Is Powder Epoxy Resins Made Of?
Powder epoxy resins mainly consists of six ingredients:
Epoxy resin
This is created through polymerization or combining a catalyst with resin hardeners.
Curing agents
These solidify the coating to increase its durability.
Additives
These offer various functions, from creating a hardened finish to reducing surface tension.
Post additives
These are added after the powder hardens to prevent it from caking.
Tint pigments
These provide the color present in the coating.
Extenders
These are known as fillers and provide an extra layer of durability while reducing glossiness.
The Process of Making Powder Epoxy Resins
Making powder epoxy resins requires several steps. First, heated epoxy resin is charged from a reactor to a cooling steel belt. After it solidifies, a device crushes and grinds the epoxy into tiny flakes. These flakes are added with curing agents, additives, post additives, tint pigments and extenders in extruders at an elevated temperature and pressure. The amount of ingredients depends on the application’s specific formulations. After the blend cools down, the mixture is milled to its desired particle size.
Powder coatings are applied to surfaces with a powder spray gun. As the powder passes through the gun’s spray head, it becomes electrically charged. The “earthed” metal component that undergoes powder coating acts like a magnet, thus ensuring the powder distributes and adheres uniformly to the surface. After the coating process, the metal is placed into an oven where the powder coating melts and reacts to solidify. When the powder coating hardens and cools down, the finished coating stays on the surface.
The Main Uses Of Powder Epoxy Resins
Because it’s resistant to harsh chemicals and corrosion, powder epoxy resins is ideal for a variety of products in multiple industries:
Appliances: Household goods, such as washing machines, dryers, microwaves, refrigerators and stoves, frequently come in contact with water and cleaning products. As a result, they receive powder epoxy resins in combination with polyester resins, titanium dioxide and barium sulfate to give them their long-lasting white appearance.
Automotive items: The industry uses powder coating as both a base coat and a finish, especially with underbody and under-hood parts that experience heat, stress, corrosion, and elemental wear and tear.
Construction: Steel rebars, pillars and poles that are used in structures, as well as hand and power tools and wires, are coated with epoxy powder.
Industrial furniture: Powder epoxy resins can protect industrial furniture, like metal cabinets, hardware features and even toolboxes, from exposure to cooling, lubrication and cleaning.
Marine structures: The anti-corrosion properties work well for underwater structures and vehicles, such as marine vessels.
Medical equipment: Staff use hospital beds, examination tables and equipment stands on a regular basis, which can be protected from long-term use with powder epoxy resins.
Plumbing systems: Plumbing systems with epoxy-based powder coating are corrosion-resistant.
Public transportation: As bars and handles inside buses and trains are more prone to wear and tear from people’s touch, adding powder epoxy resins can help protect these parts and preserve their color.
Sports equipment: Powder epoxy resins can protect sports and recreation equipment from long-term use.
Vending machines: People use vending machines many times a day, so they often come with a protective powder epoxy resins around the panels and components to increase their life span.
Types of Powder Epoxy Resin
There are two main types of powder epoxy resin:
1. Pure epoxy- This type of powder epoxy resin is made up of pure epoxy and curing agents, making it ideal for applications that require high resistance to chemicals and abrasion.
2. Hybrid epoxy- Hybrid epoxy is a combination of epoxy and other polymers, making it more flexible and less brittle than pure epoxy. Hybrid epoxy is an excellent choice for applications that require flexibility and impact resistance.
Epoxy Resin for Powder Coating and Its Curing Agent
Epoxy resins are thermoplastic resins containing α-methylethylene oxide that can be chemically crosslinked to form non-molten thermosetting polymers.
Chemically speaking, epoxy resin refers to a class of substances that contain two or more epoxy groups at the end of molecules, between cyclic structures, or other intermediate positions, and can also be chemically crosslinked to form thermosetting solids.
Because epoxy resin has excellent anticorrosion, insulation, heat resistance, flexibility and decoration, epoxy powder coatings are mostly used in online coating coatingol. comin pipelines, steel bars, valves, coils, interior decoration, insulation and other fields.
Common epoxy resin curing agents include amine and phenol curing agents, and their structural characteristics determine that the coating has specific physical and chemical properties.
◆ Bisphenol A epoxy resin
Bisphenol A type epoxy resin is obtained by polymerization of bisphenol A and epichlorohydrin, according to different synthesis methods, there are two steps: One-step and two-step method.
Epoxy value, softening point, organochlorine, inorganic chlorine are important indicators to evaluate the performance of epoxy resin.
The structure of bisphenol A has excellent anti-corrosion properties, thermal stability, and certain rigidity, which is convenient for powder storage and grinding.
Ether bonds have excellent flexibility and hydrolysis resistance, hydroxyl groups improve the adhesion of the coating to the substrate, and epoxy groups provide cured crosslinked groups.
N is the number of repeating units, the larger the n value, the higher the epoxy resin model, the longer the molecular chain, the greater the molecular weight, the greater the viscosity, the lower the epoxy value, the higher the epoxy equivalent, and the better the flexibility.
◆ Hydrogenated bisphenol A epoxy resin
Bisphenol A type epoxy resin contains a large number of benzene rings, poor weather resistance, epoxy powder coating made of it can not be used outdoors.
The benzene ring in the epoxy resin is replaced with a saturated six-membered ring, which is called hydrogenated bisphenol A epoxy resin, and the molecular structure of hydrogenated bisphenol A epoxy resin is shown in Figure 2, and R2 and R3 represent methyl groups.
Hydrogenated BPA epoxy resin not only has the advantages of BPA epoxy resin, but also has excellent weather resistance.
The physical and mechanical properties of the coating film generated after the curing of hydrogenated bisphenol A epoxy resin have basically remained unchanged after 1000h aging, and its weather resistance has been improved compared with bisphenol A epoxy resin.
◆ Multifunctional epoxy resin
The function of bisphenol A type epoxy resin is 2, the crosslinking density of the coating film is low, and the heat resistance and corrosion resistance are poor.
The multifunctional epoxy resin has a functional degree greater than 2, the crosslinking density of the coating film after curing is high, and the anti-corrosion performance is good, and the functionality of the polyfunctional epoxy resin commonly used in powder coatings is 4, such as: Tetraphenolylethane epoxy resin.
Tetraphenolylethane epoxy resin, also known as tetraphenolethane tetraglycidyl ether (t-PGEE), is a phenolic epoxy resin, which is prepared by the reaction of phenol and glyoxal in the presence of an acidic catalyst, and then reacted with epichlorohydrin under the catalysis of sodium hydroxide.
Tetraphenolylethane epoxy resin is solid at room temperature, softening point 75~80 °C, epoxy value 0.45~0.50mol/100g.
Tetraphenol ethane epoxy resin contains four epoxy groups, and the crosslinking density of the coating film after curing is large, which improves the anti-corrosion and temperature resistance of hot melt epoxy pipe coatings.
1. Safe operation procedures
◆ Preparation: Before using epoxy resin powder coating, you need to make sufficient preparation. Choose to paint in a well-ventilated outdoor place, indoor construction is strictly prohibited. The road should be smooth, free of puddles and obstacles to ensure the smooth entry and exit of construction vehicles.
◆ Protective equipment: Epoxy resin powder coating is irritating to the human body, so you should wear protective glasses, protective masks, gloves, protective clothing and other protective equipment. Especially when painting, be sure to wear transparent goggles and respiratory protection to avoid chemical substances entering the respiratory tract and eyes.
◆ Equipment Inspection: Check the status of the spraying equipment before use to see if it is normal, such as the connection of the spray gun, faulty air supply, and whether the electronic control system is turned on normally; also check whether the safety protection devices of the spraying equipment are intact.
2. Precautions for coating operation
◆ Uniform spraying: Test the spray gun before use to ensure that the paint is uniformly sprayed, the light system is consistent, there is no frost, bubbles, shedding and so on.
◆ Operation standard: Spraying need to pay attention to the uniform spraying, operation along the same direction of spraying, can not ‘shake the arm’ or ‘shake’, to ensure that the knife is perpendicular to the surface of the art, cutting width and thickness to match. The cutting width and thickness should be matched.
◆ Spray gun maintenance: The nozzle of the spray gun can be semi-circular or rectangular, the colour of the nozzle should be the same as the colour of the spray gun, and the spraying volume should be moderate. If the nozzle is clogged or cannot be sprayed properly, stop the operation immediately and clean the nozzle to avoid danger.
3. First aid measures
◆ Skin contact: Remove contaminated clothing and rinse skin thoroughly with soapy water and water.
◆ Eye contact: Lift eyelids and flush with running water or saline.
◆ Inhalation: Remove from scene to fresh air and seek medical attention.
◆ Ingestion: Drink plenty of warm water, induce vomiting and seek medical attention.
4. Storage and transport
◆ Storage conditions: Store in a cool, dry, well-ventilated place, away from fire and heat sources.
◆ Packaging requirements: Use sealed containers for storage, prevent leakage and contamination.
How to Use Powder Epoxy Resin for Coating
Preparation of the substrate
Prior to powder coating, the substrate must be pre-treated as necessary. Pretreatment generally includes steps such as cleaning, descaling and phosphating. Pretreatment is helpful in improving the adhesion and durability of the coating.
Coating
Spray the powder epoxy evenly onto the substrate to be coated. The thickness and colour of the coating can be adjusted as required. The coating is cured in a curing chamber immediately after spraying.
Curing
Curing of powdered epoxy resins takes place at a specific temperature. The temperature setting is determined on a case by case basis. The curing time is usually between 10 and 30 minutes.
How to Use Powder Epoxy to Reinforce Coatings
Powder epoxy can be used to reinforce weak coatings or bare substrates. Reinforcing the coating film helps to improve the adhesion and durability of the coating.
Preparation
Mix the powder epoxy resin and hardener thoroughly. After mixing to a specified ratio, place in a grinder and grind.
Coating film reinforcement
Apply the ground powder epoxy evenly to the coating or bare substrate to be reinforced. The thickness and colour of the coating can be adjusted as required. The coating is cured in the curing chamber immediately after application.
Curing
Powdered epoxy resins cure at a specific temperature. The temperature setting is determined on a case by case basis. The curing time is usually between 10 and 30 minutes.
Our Factory
Qingdao Shengda Leading Machinery Tech Co., Ltd is(SDL) the export company of (S.S.D) Shandong Shengshida Tecnnology Co., Ltd.,SSD was established in 2005 and listed on the stock in 2015 (NEW Three Board)
The company is a national high-tech enterprise integrating research, design, manufacture of powder machinery and providing integrated solutions for powder production lines, the products mainly include mixers, extruders, cooling belts and grinding mills.
The sales volume of the company's equipment &production line have been awarded rank No.1 by National Powder Coating Industry Center, and actively participate in the formulation of industry standards. SDL &SSD are committed to the development of intelligent energy-saving emission reduction low-noise milling equipment and environmental dust removal equipment, our company's powder equipment has a total of nine series, fifty-eight products (automatic batching machine, mixer, metal powder bonding mixer, extruder, cooling belt, mill, automatic packaging line, laboratory powder production line, environmental dust removal equipment, coating equipment,formaldehyde-free adhesive equipment), selling in China, Europe, the United States, Russia, Japan and South Korea, the Middle East, Southea Since its establishment, the company has been based on the road of technological innovation, and has cooperated with Shandong University and Shandong University of Science and Technology in production, education and research. The company has 77 valid patents, 1 computer software copyright and intellectual property system certification, ISO9001 certification, ISO14001 certification, CE certification, explosion-proof certification, dual-soft certification and many other certifications.
SDL is committed to delivering sustainable, trustworthy, and reliable powder machinery and powder raw materials such as epoxy resin and polyester resin. We have been serving the industry for over 15 years, and our experience makes us a prominent manufacturer and supplier. Our top priority is customer satisfaction, and we strive to provide exceptional service and competitive pricing, establishing long-term partnerships with our clients for more than 30 countries. Our dedication to quality and eco-friendliness ensures that our customers receive nothing but the best. Let SDL be your reliable partner; we are here to help you succeed.
Certificate
FAQ
As one of the leading powder epoxy resins manufacturers and suppliers in China, we warmly welcome you to buy advanced powder epoxy resins from our factory. All equipment are with high quality and competitive price.
