7875 Bliss ParkwayNorth Ridgeville, Ohio 44039, info@protectpoly.comWe reply within 24 hours, Sean Walsh is the Marketing & Product Development Manager of Protective Industrial Polymers, a company that manufactures high-performance resinous floor coatings for industrial manufacturing environments, which has a keen focus on developing unique solutions for managing electrostatic, microbial, chemical, explosion and safety risk concerns. Epoxy vs polyurethane is a common topic brought up during my conversations. Epoxy versus Polyurethane Crack Injection - What is the difference. Epoxy injection is performed through surface mounted ports. “What Are Epoxy Resins?” ThoughtCo, ThoughtCo. Reaction of polyepoxides … Epoxy is a blend of hardener and resin made from polyamine and epoxide. Epoxy Technology. As a result, this can be made very variable to suit any application. Like epoxy, it is a 2-part component that mixes resin with a catalyst to cause the curing reaction that makes the material hard. With 98% solids, polyurea is 4x stronger and yet 98% more flexible than epoxy. However, epoxy and polyurethane can be used together to create a very strong flooring system. @Linda, I would use a very hard curing epoxy or even a polyurethane resin. In this guide, we’ll compare epoxy resin and polyurethane resin: keep reading to learn more. I’ve been researching products on your website. 5. Polyurethane really needs to go on in individual coats to build up to a finish, which means you shouldn’t spray it on to the wood. This resin has many different uses, besides just as a floor coating. Does hardened epoxy still "dent" with enough pressure? Polyester and polyurethane resins are the most commonly used casting material available. Protective Industrial Polymers is a unique company devoted to providing turn-key flooring solutions for today's industrial marketplace. 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. Dear Katherine you seem to know a lot about resins. Most of the times, this polymer material shows high chemical resistance and high-temperature resistance but low flexibility. Johnson, Todd. In this article we explore the key differences between the two Available here As described above, epoxy is lighter, stronger, and more environmentally friendly. The unit for this measurement is “mol/kg”. Polyurethane: Expensive But Durable Finishing Products (300) Polyurethane delivers a tough and flexible coating to wood. The difference between epoxy and polyurethane is that the epoxy resin contains epoxide groups whereas polyurethanes contain urethane linkages. The epoxy resin is less toxic to the board builder and the environment.
Comparison of the characteristics of epoxy and polyurethane Epoxy and polyurethane are referred to as resins; for the most part, both are two component formulations. Polyurethane vs Rubber. Installation & Performance: Upon curing, the epoxy build coat(s) provide a hard, durable surface with good impact resistance. Resin coatings, such as epoxy or polyurethane, help make flooring materials meet the needs of various industries. mat and 10 oz. Optional wear and safety additives can be incorporated into the topcoat texture. The epoxy/cloth laminate is comparable to using polyester resin with 3/4 oz. Or else, epoxy resins can react with some other compounds such as; These are co-reactants. chris says: January 10, 2016 at 9:38 pm. • Epoxy resin forms stronger bonds when it comes to gluing two pieces together and has better adhesive properties with surfaces like wood, metal or concrete. Epoxy resins are also sensitive to moisture, but the damage done by humidity will be far more limited. Both epoxy and polyurethane are polymer materials. These co-reactants are often referred to as hardeners or curatives, and the cross-linking reaction is commonly referred to as curing. Proper Floor Cleaning and Maintenance Can Help Ensure Longer Service Life. Resin vs Epoxy: below is a list of these main resin categories: Polyester Resin: This is not an actual epoxy but is rather an unsaturated synthetic resin; Epoxy Resin: This type is supplied in 1 or 2 component forms; Polyurethane Resin: This is also not an actual epoxy but is rather a synthetic resin or plastic Lazonby, John. It resembles plastic with more durability. They also harden differently. Epoxy and polyurethane are booth chemical resins with different reaction profiles and physical properties.
If you’re contemplating some major build or repair projects involving fiberglass this summer, then you are probably trying to decide whether it is worth the added expense of using epoxy instead of polyester resin. The monomers for polyurethane are polyols and isocyanates. • Epoxy is resistant to water, heat, and chemicals whereas resins are not. It all depends on what your project is as to whether you would choose epoxy resin or polyester resin. It’s not as strong as epoxy but there are some occasions when it might do a better job. Polyurethane Resin vs Polyesther Resin. Polyurethanes "dry" in a fairly short time, but resins "cure" instead of drying and that takes at least 24 hrs. Epoxy resins less flexible and less abrasion resistant. Epoxy resin makes a strong and durable tabletop. Learn the differences between epoxy vs polyurethane coatings. Epoxy and polyurethane are great for protecting your floor against stains, damage, chemicals, oils, and wear. You will notice that adhesives used for the production of cars, snowboards, bicycles, and many such things are epoxy resin or contains Epoxy in it. Polyurethane will not bond as wide a range of materials as epoxy resin will but in the case of fiber, wood, leather, etc. Epoxy resin makes a strong and durable tabletop. 5. With the number of advantages polyurethanes have over epoxies, why would one choose one coating technology over the other? Build/Thickness: Epoxy build coats are typically installed at 8 to 15 mils per application. Novolac is another class of epoxy resin that has higher functionality than standard DGEBA resulting in a higher crosslink density. We frequently get asked about the difference between epoxy resin and polyester resin. It can be overwhelming at first. 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. Available here, 1.’Epoxy’ By Dzhang2680 – Own work, (CC BY-SA 3.0) via Commons Wikimedia In the application point of view, the main difference between epoxy and polyurethane is that the epoxy resins can resist moderate temperatures while the polyurethanes can withstand high temperatures. Polyester is far less pleasant to work with than epoxy. Polyurethane resin, on the other hand, is up to 50 times more expansive than epoxy resin, making it far more resistant to cracking and therefore suitable for indoor or outdoor use. They also harden differently. It takes an age to dry. Madhu is a graduate in Biological Sciences with BSc (Honours) Degree and currently persuing a Masters Degree in Industrial and Environmental Chemistry. Polyurethane is a polymer material that has urethane linkages. When choosing a resin to coat a concrete floor, companies want to make the best choice, which is usually reduced to either epoxy vs polyurethane. “Epoxy.” Wikipedia, Wikimedia Foundation, 19 Apr. 2018. However, epoxy resins will begin to gel in as quick as 20 minutes, whereas casting resins may take upwards of 18 hours to gel. When used as a topcoat over epoxy, they protect the underlying epoxy from yellowing over time. However, using an epoxy-based resin will ensure that the product cures hard and bonds securely to the surface. 4. These polymers can be either low molecular weight or high molecular weight polymers with at least two epoxide groups. Chemically, both epoxy and urethane are polymers, or large molecules that contain a repeating structure. 3. Upon curing, the epoxy build coat(s) provide a hard, durable surface. As far the features and benefits, it is a durable choice for many kinds of labs. Epoxy vs. Polyurethane vs. Resin vs. Urethane Cement Flooring. The monomers for epoxy resins are phenols and epichlorohydrin, but the monomers may vary depending on the type of epoxy resin. What kind of resin you should select depends on the job you are doing. Epoxy vs Resin. For example, parts made for bumpers, spoilers, and fenders. With 98% solids, polyurea is 4x stronger and yet 98% more flexible than epoxy. (adsbygoogle = window.adsbygoogle || []).push({}); Copyright © 2010-2018 Difference Between. Often, people say “resin” without specifying which resin. To cover wood, a laminate using epoxy resin and 10 oz, cloth will yield a much better job than 10 oz. While curing epoxy creates a strong bond with the concrete substrate and ultimately provides a repair of high compressive and tensile strength properties. Flexible and elastic properties go to both of these options and each substance is used in the automotive industry, in the manufacture of certain parts. Epoxy adheres to wood much better than polyester does. They are also called plastic adhesives, and they are also used to bond together plastics, glass, and metals. Reply. Polyurethane resin, on the other hand, is up to 50 times more expansive than epoxy resin, making it far more resistant to cracking and therefore suitable for indoor or outdoor use. Epoxy is the most popular resin type used in flooring systems. Cure time for PU is much longer than PMMA. The conversation usually starts off something like this: “I need you to take a look at my concrete floor,” the facility manager says. We also have crack and spall epoxy-based products that are USDA approved for meat and poultry plant-based applications. • Resins are used more in construction where there is no hurry for the final product. Polyester laminating resin doesn't fully cure while exposed to air, so when it is used for lay-up, every application joins to the previous one on a molecular level. As a varnish style coating. Polyurethanes provide the enhanced performance characteristics that protect the entire system. Epoxy is an organic compound. We frequently get asked about the difference between epoxy resin and polyester resin. Polyurethanes can withstand high temperatures. 6. In the industrial floor coating world, while epoxies and polyurethanes are both thermosetting polymers, their differences in function and performance are vast. These epoxies are designed by having the curing agent with a small amount of epoxy resin. This thickness allows the coating to chemically bond to the epoxy primer, and is thick enough to self-level and fill minor concrete blemishes and hairline cracks. Polyester resin is most commonly used in the construction of molded reinforced fiber and composite products, so its mechanical properties … Why is Planet Earth Your True Friend for ESD Grounding? 5 days for base and 8-12 hours for overcoats undercuts epoxy cure times but disrupts the use of your space significantly. Epoxy and polyurethane are great for protecting your floor against stains, damage, chemicals, oils, and wear. Video of the Day Volume 0% There are similarities between these substances, but their differences are more apparent and each industry seems to have its own preference. Epoxy or epoxy resin is a class of polymer material that consists of epoxy functional groups. Polyurethane is generally more resistant to scratching, chemicals, UV rays, and general wear and tear than epoxy. This polymer material has a low viscosity at room temperature. It's said that one pouring of epoxy resin is "equal to 60 coats of polyurethane" in thickness, but it isn't necessary to use a resin just to get a high gloss effect. In general, epoxy resins offer limited resistance to the organic acids that are found in large quantity of food and drink produce, whereas polyurethane systems boast unrivalled resistance to corrosion, inorganic, alkalis, organic alkalis and solvents. Can I use any kind of paint on the cast piece? Increased Impact and Abrasion Resistance: Polyurethanes exhibit excellent impact and abrasion resistance, providing up to four times longer life than uncoated epoxy floors. Polyurethane is another resin for floor coating concrete and steel. These monomers combine with each other to form a polymer. It is a form of polyurethane. Isocyanates and polyols undergo polymerization to form a polyurethane. Epoxy resins can resist moderate temperatures. The term epoxy is used to name epoxy resins that consist of epoxy functional groups in a repeating pattern. A complete coating system is only as good as its initial bond to the concrete substrate. • Epoxy resin forms stronger bonds when it comes to gluing two pieces together and has better adhesive properties with surfaces like wood, metal or concrete. Epoxy is valued for its phenomenal bonding strength and electrical conductivity. Novolac epoxy resins for high temperatures. Epoxy is an organic compound. For concrete floor coating applications, the most durable, longest-lasting coating systems usually include the use of both epoxy and polyurethane. Epoxy resin is made through curing, or using heat, air, or chemicals to harden the substance. There are some differences between polyurethane and epoxy. Epoxy resins can react with each other via catalytic homopolymerization and form cross-links between them. Bonding to Concrete: Provided the concrete substrate is properly prepared to receive a coating, epoxies are excellent for mechanically bonding to concrete. Epoxy vs Resin • Epoxy is the name of an ingredient as well as the end product of epoxy resin manufacturing. Sawdust will take up ‘water stains’ when mixed with resin, unless it is sealed first. Here we use bisphenol F in the place of bisphenol A, but the way of formation of the polymer is same as the bisphenol A epoxy resin (as discussed above). If we increase the amount of bisphenol A (compared to epichlorohydrin), it provides high molecular weight polymer material. “It’s bare concrete and we need it to be durable, bright, safe and easy to clean. These polymers get their name according to the repeating linkages present in the polymer material instead of the monomers used for the production. Epoxy carries protections for impact, scratches, water, and chemicals. Overall, epoxies are the preferred materials for priming properly prepared concrete substrates, and providing ‘build’ or film thickness that can hide small blemishes or hairline cracks on the concrete surface. Epoxies are a type of polyurethanes. “Polyurethanes.” The Essential Chemical Industry Online. Dans notre documentaire sur le sol de résine, abordons ici les avantages et inconvénients d’une résine époxy. UV Stability: Polyurethanes exhibit excellent UV-resistance. Polyurethane tends to be the most difficult resin to work with. Like epoxy, the 2 components are mixed before they are injected into a foundation crack. All rights reserved. Epoxy is more plastic in texture and forms a hard bond once cured. What is Epoxy • Epoxy is preferred in most industries as it sets much faster than resin. As polyurethane is more durable than rubber, it can be used in cases of high stress and offers a certain amount of flexibility but remains strong. A: Acrylic resin (but not acrylic emulsion, which is the basis of acrylic paint) is a thermoplastic, which means it is one of a group of plastics which can be heated and manipulated repeatedly, whereas polyester resin and epoxy are thermosetting plastics, which use heat or a catalyst to solidify into a solid mass that won’t melt down. This creates a well-adhered system base that will allow subsequent build and topcoats. We recommend concrete preparation by mechanical means, such as diamond grinding or abrasive shot blasting methods. However, there are some plant-derived sources as well. Is Floor Cleaning and Maintenance Part of Your Safety Program? When it comes to epoxy vs polyurethane coatings, the important take-away is to realize that both product technologies work well in conjunction with each other to produce a durable, long-lasting flooring solution. Though they exhibit much thinner cured-film thickness, polyurethanes offer a number of unique advantages over epoxies. Epoxy boards, on the other hand, are much lighter, making them the perfect board for airs or quick turns. For example, the user can add an inhibitor to the resin to increase the so-called pot life, i.e., the processing time. Polyurethane may be the most durable resin of them all and that means you won’t need to do as much maintenance when you choose polyurethane. Epoxy. This gives them the desired properties. He has over 15 years of marketing and sales support experience in the protective coatings industry. Often, I receive a call from a facility manager who has been tasked with coating his or her production floor. The reactions between the monomers in this polymerization are an exothermic reaction in which heat is given off from the reaction mixture. We will take a look at some of the differentiating factors between the two so you can decide what product suits your floor best. What is Epoxy? An old EPS blank can be broken down and recycled into a new blank. In summary – Epoxy vs Polyurethane. If the repair is critical or structural, an epoxy resin should be considered. Cons • There are, some particular usage method of epoxy resin, it can be highly dangerous if not used correctly. 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). Polyurea is a subgroup of polyurethane. Sean enjoys working closely with PIP’s sales and management group to develop and market new flooring products and systems to address end-user’s unique requirements. 1. Polyurethanes "dry" in a fairly short time, but resins "cure" instead of drying and that takes at least 24 hrs. With a mind rooted firmly to basic principals of chemistry and passion for ever evolving field of industrial chemistry, she is keenly interested to be a true companion for those who seek knowledge in the subject of chemistry. Epoxy or epoxy resin is a class of polymer material consisting of epoxy functional groups. Learn the differences between epoxy vs polyurethane coatings. Polyurethane vs Rubber. But which material should you choose for your floors? Polyurethane coatings perform very similar to Polyaspartics but they take longer time to cure (at least 24 hours) and need to be applied very thin (4 to 6 mils per coat) Polyurethane coatings are used mostly top coats over Epoxy coatings. This makes polyurethane coatings more resistant to scratches and similar damage and is why you’ll often find urethane resin floors in heavy traffic areas – such as multi-storey car parks. The epoxy resin is less toxic to the board builder and the environment. 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. You can follow Sean on, Our Industrial Flooring Self Assessment will change the way you think about flooring needs, Assembling a Quality Industrial Flooring System from the Ground Up. Odor. In fact, in many cases, if the epoxy primer and build coats are well-bonded, a simple re-coat of the polyurethane topcoat may be all that is required every few years, depending upon use. Side by Side Comparison – Epoxy vs Polyurethane in Tabular Form They cannot be used as a complete system in itself. Therefore, the cross-linking reactions that epoxy resins undergo with these curatives refers to “curing”. Polyurethanes are the “icing on the cake”. EPS foam is also more environmentally friendly than polyurethane because it can be recycled and re-purposed. • Epoxy is stronger than resin. Resin and epoxy are both adhesives commonly employed in the construction industry. Compare the Difference Between Similar Terms. In summary – Epoxy vs Polyurethane. Epoxy is a strong adhesive or glue that does essentially not expand.
Of course, concrete preparation is a crucial part of establishing a proper bond. Moreover, polyol also should have at least two hydroxyl groups per molecule. Polyurea is a subgroup of polyurethane. This polymer material is linear and is semi-solid crystalline materials. A polymer is a macromolecule that contains a large number of small repeating units (monomers). From an applicators point of view polyurethane floor resins are extremely sensitive to the presence of humidity. With a limited pot life and risk of humidity issues, your staff needs to work quick and smart for good results. Polyester resin is excellent for fiberglass lay-up — building a boat, for example. Polyurethane coatings are only about 2 or 3 mils thick and just about 60% or 70% solids, depending on the manufacturing company you get the coating from. Take our FREE Flooring Self-Assessment today! It is formed when isocyanates react with water or polyetheramines to create a urea linkage. Here’s a quick breakdown on the differences between epoxy resin and polyester resin.
Summary. 4. PU/PE are built using a polyurethane foam blank and then glassing it with a polyester resin. Poly Surboard. Epoxy and Polyurethane resin floors are the two most common types of floor coatings. What is Epoxy? They are also not as abrasion and chemical-resistant as polyurethanes. 1. 2.’Polyurethane chair, Walker Art Gallery’ By Reptonix free Creative Commons licensed photos (CC BY 3.0) via Commons Wikimedia. “I thought all floor coatings were ‘epoxy’,” the facility manager quips. • Resins are used more in construction where there is no hurry for the final product. Polyurethane (or urethane), used for foundation crack repair applications, while not necessarily a 2 component blend, can have 2 components; the polyurethane resin and an activator, or accelerator. Used together to create a urea linkage be incorporated into the topcoat texture call us for with! In this guide, we ’ ll compare epoxy resin counter tops made. 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