It is said that epoxy offers higher strength than urethane. “I thought all floor coatings were ‘epoxy’,” the facility manager quips. However, polyaspartic aliphatic polyurethane is different. The difference between epoxy and polyurethane is that the epoxy resin contains epoxide groups whereas polyurethanes contain urethane linkages. One practice was to make the crack large enough to insert a pipe to drain th… Wood, metals, rubbers, cured epoxy, leather, tile and glass, many plastics, concrete and brick, the list goes on. Or call us for help with choosing between epoxy and polyurethane concrete repair products at 631-298-6300. They are brittle and fast-cure, have the highest temperature resistance, and provide the highest strength bonds. Polyurethane coatings are usually only a few millimeters thick and cannot be adjusted the way epoxy coatings can be. For concrete floor coating applications, the most durable, longest-lasting coating systems usually include the use of both epoxy and polyurethane. It’s not a matter of choosing one over the other, but a matter of utilizing both to achieve the desired result: Epoxy primers for bonding the system to concrete, epoxy build coat(s) for total system build/thickness, and polyurethane topcoats for enhanced physical performance, chemical-resistance, safety and aesthetics. A good alternative is epoxy resin glue. While all of our epoxy and polyurethane flooring products are suitable for DIY installation, the high sensitivity to moisture and the fast cure time of PU systems make the installation process far harder than that of hardier epoxy resin options. 1. A polymer is a macromolecule that contains a large number of small repeating units (monomers). “Polyurethane glue is not foolproof,” says Zimmerman with Franklin International. The monomers for epoxy resins are phenols and epichlorohydrin, but the monomers may vary depending on the type of epoxy resin. While it has been available in Europe for years, this type of glue is a relative newcomer to the U.S. market. Cependant, sa résistance chimique et son adhésion sont plus faibles par rapport à celles d’une résine époxy. 1. The unit for this measurement is “mol/kg”. Polyurethane glue's foaming characteristic gives it superior gap-filling properties, as it expands to fill any available space. This chemical protects against damage, UV rays, and water. The keys to understanding whether to use e… The crosslinking process forms a thermosetting polymer that has favorable chemical and mechanical properties. Compare the Difference Between Similar Terms. It is commonly known as urethane for … carl le roux says: 25th April 2018 at 11:53 am. Build/Thickness: Epoxy build coats are typically installed at 8 to 15 mils per application. Lire l'article Ooreka . They offer chemical resistance and waterproofing. It is ideal for metals, plastics, stones and other materials such as cardboard. Why is Planet Earth Your True Friend for ESD Grounding? 16 thoughts on “Epoxy vs. Polyurethane – Which Will You Choose?” sudhir says: 3rd April 2018 at 10:33 am. Elles constituent en effet, une bonne option pour un sol plus esthétique. That all changed with epoxy. The method of calculation of the specific amount of epoxy groups present in the epoxy resin is as follows: This type of epoxy resins is a result of the combination of epichlorohydrin and bisphenol A. this combination gives bisphenol A diglycidyl ethers. Cyanoacrylates, Epoxy Adhesives, Polyurethane Adhesives, Structural Acrylic Adhesives and UV Cure Adhesives all bond well to composites. However, putting finishing cost aside, one would be hard-pressed to come up with a better system than a two-component epoxy primer topcoated with two-component polyurethane. The primary drawback with urethane vs epoxy commercial coatings is that urethane may not bond as tightly to concrete as epoxy does. “What Are Epoxy Resins?” ThoughtCo, ThoughtCo. All rights reserved. It is formed when isocyanates react with water or polyetheramines to create a urea linkage. Polyurethanes do not bond well to concrete and do not exemplify the self leveling properties that epoxies do when applied to on these surfaces. Retrouvez ci-après nos 29 offres, marques, références et promotions en stock prêtes à être livrées rapidement dans nos magasins les plus proches de chez vous. Like epoxy, polyurethane is a thermosetting polymer as well and is considered a high performance coating. The following examines the advantages and/or disadvantages each type exhibits. Isocyanates and polyols undergo polymerization to form a polyurethane. Dans notre documentaire sur le sol de résine, abordons ici les avantages et inconvénients d’une résine époxy. But it seems not all clients understand them. Since both components have this ability, flexibility is a necessity along with firmness. Is Floor Cleaning and Maintenance Part of Your Safety Program? This polymer material has a low viscosity at room temperature. Finishes: Polyurethane finishes can range from satin to semi-gloss to high-gloss. As it is durable, non-porous, and reasonably economical, epoxy resin is the most common choice for many kinds of labs. Epoxy and polyurethane (PU for short) floors are the two most commonly used types of resinous industrial floors. Polyurethane glue, often referred to as Gorilla Glue because they were the first company to bring it to the US, is one of the most versatile glues around. when it comes to hardness epoxies are much stronger but polyurethane are more scratch resistance. Epoxies are fairly easy to install, exhibit ample working time, and are fairly cost-effective when compared to other industrial flooring solutions. Polyurethanes provide the enhanced performance characteristics that protect the entire system. The urethane linkage forms when the –N=C=O group of isocyanate react with the –OH groups of alcohol to form a urethane linkage (-NH-C(=O)-O). Les peintures polyuréthanes ou époxys sont bien différentes malgré une similarité apparente. And when should we pick one over the other? Differences Between Epoxy vs.Polyurethane Thin Film Topcoats By Sophia Daukus on October 17th, 2016 in Commercial & Retail , Installation Epoxy and polyurethane thin film topcoats are two types of high performance floor coatings that can be used to strengthen, protect, and improve the aesthetics of an industrial flooring system. Polyurethane’s surface may not be as hard or thick as epoxy. Leurs aspects, leurs prix, leurs solidités et leurs résistances ne sont pas du tout les mêmes. Epoxy adhesives are used for general purpose applications, bonding various substrates. Urethane has a thin surface film that makes it harder to apply to small cracks and similar surfaces. Additionally, the offer excellent resistance to staining from hot or cold tires. When solidify the PU glue, it will lead to some low molecular compounds, which is toxicity, it is bad for health with the bad smell. Urethane is resistant to UV light and stays the same color longer than epoxy. Good Info. The only glue joint that I have had fail (other than fixing something while saying "I wonder if this will hold") was the corner of a fairly large mirror frame, done with polyurethane glue. Franklin 2303 Titebond Polyurethane Glue can be used for wood as it is 100% waterproof product. Polyurethane is also a polymer material that contains urethane linkages. Once the plastic foam has cured, it becomes hard, durable and waterproof. It does not work well on polypropylene, polyethylene or on such substances as Teflon or silicone. The ratio between the number of epoxy groups and the mass of the polymer material gives the specific amount of epoxide groups in an epoxy resin. Bonding to Concrete: Provided the concrete substrate is properly prepared to receive a coating, epoxies are excellent for mechanically bonding to concrete. With our 93% solids kits, our 100% solids kits and our Polyurea kits, we offer high-end, UV stable best in class materials. 1. nonsealed eps/epoxy & 4oz glass squeegeed until weave showing/corecell 2. nonsealed eps/epoxy & 4oz glass with enough epoxy to cover weave/corecell 3. nonsealed eps/polyurethane glue/corecell 4. nonsealed eps/polyurethane glue & 4oz glass/corecell Panel 3 had good bond but no dent strength at all. Although the name polyurethane gives an idea that the polymer consists of urethane monomers, it in fact, consists of urethane linkages, not monomers. If we increase the amount of bisphenol A (compared to epichlorohydrin), it provides high molecular weight polymer material. 9. Upon curing, the epoxy build coat(s) provide a hard, durable surface. What are Polyurea and Polyaspartic Coatings and how do they compare to Epoxy? “Yellow glue makes a bond that is … 2, The PU (polyurethane) glue is better than epoxy resin glue because of its good yellow degeneration resistance, good Low temperature resistance, but not resistant to high temperature. The bottom line, experts say, is that polyurethane glue is much more stainable than yellow glue because it sits on top of the wood and doesn’t seal the pores of the wood the same way that yellow glue does. Choisir entre une résine polyuréthane comme la peinture sol industriel ou une résine époxy peut être un choix particulièrement difficile. This practice over time made things worse. In very simple terms, a typical two-part epoxy coating contains a resin side and a hardener side. 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