• Apr 29, 2022 Notice on the International Labor Day Holiday 2022
    Dear Customers, As it's known, the International Workers' Day, also referred to as Labor Day or May Day, comes on this Sunday. More than 80 countries across the globe, including China, are celebrating International Workers' Day on the first of May. To let you know that, as here in China in celebration of the Labor Day, we are having a five-day public holiday from Apr.30th to May.4th. We will be back to work on May 5th, 2022 (Thursday). We feel sorry for any inconvenience to you. However, please feel free to contact us via email at info@sinosunman.com or mobile phone at +86 13721078505 if you there is anything urgent. For inquiries, you are always welcomed to submit through the online inquiry forms. We will respond to you as soon as possible. Sunman wishes you a nice holiday!
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  • Apr 21, 2022 What Raw Materials Used in Powder Coatings?
    The main raw material components used in powder coatings include: 1. Resins are the key component of powder coatings. The range of resins used is increasing steadily in an attempt to meet the more demanding needs of new market sectors. Thermosetting Powders Thermoplastic Powders Epoxy Polyvinyl Chloride Epoxy-Polyester Hybrid Polyolefins Urethane Polyester Nylon Polyester TGIC Polyester Acrylic Polyvinylidene Fluoride 2. Curing agents are used according to the type of resin system employed and the final properties required of the coating 3. Accelerators are used to increase the cure reaction rate 4. Pigments are generally solid particulate materials such as titanium dioxide or carbon black 5. Fillers are used to reduce the cost of the coating formulation and / or to improve specific properties such as flow, surface texture, lubricity, etc. Common fillers are barytes, calcite, mica, talc, whiting, and wollastonite 6. Extenders, such as aluminum silicate, are used to provide opacity and act as a filler 7. Degassing agents are particularly important in low-bake systems. They are used to eliminate / dissipate gas bubbles that may cause film porosity and embrittlement or poor finish 8. Dry Flow agents improve the free flow of powders within the production delivery systems 9. Flow agents enhance film properties and minimize/eliminate surface defects by improving the flow of the molten coating. Examples of flow agents include polyacrylates, silicones, surfactants, and fluorinated alkyl esters 10. Matting agents are used to reduce the gloss of the cured film 11. Texturing agents are used to control/enhance the gloss level of cured films 12. Rheological additives provide viscosity control to molten coatings for improved edge coverage or for textured surface effects 13. Waxes are added to the formulation to provide slip, hardness, scratch and mar resistance, and to act as free flow powders and anti-bridging agents in processing 14. Tribo-charging additives such as antioxidants and light stabilizers are frequently used in powder coatings. Depending on their composition, tribo-static powders require additives, such as HALS to improve their charge ability in addition to their light stabilization properties. 15. Heat Stabilizers are required to be thermally stable and non-volatile during high-temperature powder extrusion and curing processes (electric and direct-fired gas ovens), and to show no discoloration. Various classes of antioxidants have different thermal stabilization mechanisms. High resistance against UV degradation is necessary for all exterior applications. This is achieved through a synergistic combination of UV absorbers and HALS. The raw powder coating materials are generally mixed dry and then fed into an extruder for melt mixing. Once cooled, the extrudate is then chipped and ground into the final product. The chips are ground to a very specific particle size distribution depending on the application.
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  • Apr 12, 2022 Differences Between Acrylic Floor vs. Epoxy Floor Coating
    The acrylic is a water-based floor coating made of acrylic polymer emulsions. Meanwhile, the epoxy coating comprises a resin and polyamine hardener, making epoxy better. As a 100% resin product, it is more resistant and durable than acrylic. Following, pls check five key differences between both types of coatings. Usability If you want to focus on interior floor coating, epoxy coating is specially developed, while acrylic coating can be used on both exterior & interior floors. Also, epoxy is designed for areas prone to oil or chemical leaks. Abrasion-resistant The epoxy coating provides a long-wearing surface due to its being abrasion-resistant, unlike the acrylic coating. Finishing Epoxy coating provides a high gloss finish, while acrylic coating provides a more diverse option for finishing looks, ranging from matte to glossy. Besides, acrylic coatings are more rentable for decorative concrete where there is no heavy foot traffic. Acrylic works like a protective coating, and it does not penetrate the concrete. Affordability Affordability plays a deciding factor for any product, which applies when choosing between acrylic and epoxy. As mentioned before, as epoxy is more durable due to the resin, it increases the price. Besides, it has been shown that water-based solutions are cheaper than 100% solid epoxy resin products. Application It’s vital to know that epoxy lasts more time to dry than acrylic. Also, you should be careful with the application because water could damage the application if it is not well dry.There are some areas where you can use acrylic and epoxy: Acrylic Coating • Exterior surfaces like stamped concrete • Interior floors to make them resistant to staining Epoxy Coating • High traffic areas • Manufacturing facilities • Chemical containment areas • Garages and Kitchens
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  • Apr 02, 2022 Holiday Notice of Tomb Sweeping Day
    Please be kindly informed that our company is scheduled for the Tomb Sweeping Day (Qingming Festival) from Sunday, April 3rd, 2022 to Tuesday, April 5th, 2022. We will be back to work on April 6th. Tomb Sweeping Day, also called Qingming Festival, is a traditional Chinese festival celebrated by families to honor their past ancestors. Sorry for anything inconvenient to you. Please feel free to contact us via info@sinosunman.com or +86 13721078505, if you have something urgent to get answer. You may submit your inquiry through the online inquiry forms. We will respond to you as soon as possible. Sunman wishes you a nice holiday! Enjoy the spring!
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