The most commonly used rubbers are also artificially made but there's also natural rubber. Maximum service temperature is 200°F. This product is also available as a foam which has tremendous dynamic performance and abrasion resistance. Water-based solutions are also available. Polyurethanes (also called “urethanes”) are any of a family of elastomers, an artificial rubber. Polyurethanes are outstandingly able to withstand more loads than rubber because they are harder than rubber and yet more flexible than plastics. But let’s keep it simple. Polyurethane 1K adhesives consist, as the name suggests, of only one component. Color is natural which is light brown that turns dark brown when exposed to UV light. Boyce1 1Department of Mechanical Engineering, Massachusetts Institute of Technology Cambridge, MA 02139 2Department of Mechanical Engineering, University of Colorado Boulder, CO 80309 Submitted in December 2003 Revised in July 2004 (No properties are lost in this color transformation. PUR is created by an exothermic, i.e., heat-releasing polyaddition reaction. If you want to work with resin, you are spoilt for choice. They are unique in combining the strength of rigid plastics with the flexibility and elasticity of rubber. Plei-Tech® 10 is available in 80°A, 90°A, 93°, and 97°A hardnesses. Often Kormax Polyurethane is used to replace rubber, plastics and metals because its toughness and durability. Rubber – Goodyear Conveyor Belting 220 PIW WingfootII. Home Â» Complete Polyurethane Resin Guide â Everything you need to Know. Due to its low viscosity and various other properties, polyurethane resin is ideally suited for mold casting, regardless of whether the mold is lost or reusable. Maximum service temperature is 200°F. This material is ideal for bumpers and cushions which require high displacements. The material can be mixed in different proportions (‘systems’). However, if you want to cast polyurethane, there are two things to consider: Fields of application for mold casting are, among others, the following: mold casting enjoys great popularity both in industry and among small users and can be carried out not only by machine but also by hand. Parts made of polyurethane will often outwear other materials by a margin of 5 to 50/one when severe abrasion is a factor. Maximum service temperature is 275°F. Furthermore, it is not too cost-intensive. The degree of hardness is indicated in Shore and should be noted on the respective packaging. Polyurethane casting resin is a fascinating material for both industry and the do-it-yourselfer. No properties are lost in this color transformation. Process the opened containers as quickly as possible and shake the two components carefully but thoroughly before mixing. Model-Pro is a two component polyurethane casting resin which exhibits good impact resistance and strength. If you want to work with such a resin, you must, therefore, pay attention to the pot life, otherwise the material hardens too quickly, and you have to start again from the beginning. Density ranges are from .35 g/cc to .60 g/cc. Standard color is natural (cream), however color coding is available. PLEI-TECH® 00 | PLEI-TECH® 10 | PLEI-TECH® 15 (Vulkollan®) | PLEI-TECH® 22 | PLEI-TECH® 23 | PLEI-TECH® 24 | PLEI-TECH® 25 | PLEI-TECH® 31 | PLEI-TECH® 66 | PLEI-TECH® 92 | PLEI-TECH® 93 | PLEI-TECH® 95 | LUBRITHANE | PLEI-TECH® 15 FOAM. Otherwise, the polyurethane casting resin may lose its favorable properties. We manufacture products in polyurethane and plastic using methods of open cast and injection moulding. Typical applications are bumpers, balls, and hydrocyclones. For example, foams can be produced from PU, but also paints, adhesives, and coatings. Plei-Tech® 15 is also known as Vulkollan® (trademark name of Bayer AG Germany). In outdoor applications, it should be preferred over epoxy resin coating because, unlike the latter, it does not have a tendency to yellow due to its high UV resistance and can also withstand sharp temperature fluctuations optimally. Polyurethane polymers are traditionally and most commonly formed by reacting a di- or triisocyanate with a polyol. When you use ABS plastic, you get a material that is impact, chemical, and heat resistant. While most polyurethanes are thermosetting polymers that do not melt when heated, thermoplastic polyurethanes are also available. It has been proven to be vastly superior to rubber plastics and metal in many applications. © Copyright Pleiger Plastics Company. Physical Properties Of Polyurethane. Overview: Kormax Polyurethane is a unique material that is sometimes called the man-made rubber. Color is black. Standard Color is amber, however this product is not color stable. Thermoset polyurethanes have many advantages over plastics for a variety of applications, including: Its easy application and its many positive properties enable a clean production even without much previous knowledge. Kormax Polyurethane […] It has properties between the characteristics of plastic and rubber. When storing polyurethane casting resin, care must be taken to avoid large temperature fluctuations. If you want to buy polyurethane resin, you should also check the hardness level and whether it is suitable for your project. Polyurethane is an artificially made material. The casting resin offers significant advantages, as it is easy to apply and very durable. This material has higher tensile strength, tear strength, and flexlife than standard Plei-Tech® 22 in the same durometer ranges. It is possible that the PU resin may crystallize slightly during storage. Polyurethane foam is subsequently used in a myriad of industries such as aerospace, medical, construction, marine, and composite core. Make sure to fix the workpieces during this time, for example with screw clamps. Such properties can be investigated and compared between different products using standardised test methods. Therefore, these are usually encapsulated. Depending on the chemistry formulation and the reaction process, polyurethane’s end-state performance is tailorable to meet exactly what you need. Plei-Tech® 10 is a very high performance polyurethane that is best suited for the most demanding applications. It withstands not only high thermal but also mechanical loads and is easy to apply. Plei-Tech ® 23 is a polyester polyurethane. Make sure that the packaging is airtight and moisture-proof when opened. PU casting resins can, just like epoxy resin and polyester resin, be combined with various additives as well as filling materials or colorants. After filling, you can lightly tap the filled mold with your fingers a few times to allow the air bubbles to escape. In our Polyurethane Resin Guide, we give you the most essential polyurethane casting resin properties and tell you what to look out for when buying polyurethane. These plastics are separated into six different series, highlighted below. Polyurethane's mechanical properties can be isolated and manipulated through creative chemistry which creates a number of unique opportunities to solve problems with performance characteristics unequaled in any other material. Casting resin for Making models, molds, protoypes, figurines, proof molds, make reproductions, etc.. Model-Pro turns from liquid to solid in 15 minutes and works excellent in silicone molds. For instance, thermoset polyurethanes can be soft and flexible as a cushion to something hard and rigid as a rock. However, PU also protects electronic assemblies from a wide range of environmental influences such as mechanical stress or moisture. Maximum service temperature is 200°F. As a result, this can be made very variable to suit any application. Plei-Tech® 22 is not suited for applications involving high dynamic loading. Plei-Tech® 15 performs well in solvent and oil environments, and is available in hardness from 60°A to 60°D. Load bearing capacity (ASTM D2842) Standard Test Method for Water Absorption of Rigid Cellular Plastics - This test method covers the determination of the water absorption of rigid cellular plastics by measuring the change in buoyant force resulting from immersion under a 5.1-cm (2-in.) In this case, let it cool down to room temperature before you process it further. In our polyurethane resin guide, we assume its use as a floor coating on concrete as well as mold casting. They are made of polyurethane, which combines the shock-absorbing qualities of rubber with the tear resistance of plastic. Very easy to clean. Plus, ABS plastic … Polyurethane performs well for hardness, tensile strength, compression strength, impact resistance, abrasion resistance and tear strength. Even at high durometers, urethane can be stretched to substantial elongations and will still return to its original dimensions. Generally speaking, polyurethanes are synthetic resins or plastics that result from a polyaddition reaction between dialcohols or polyols and polyisocyanates. Polyurethane Rubber Rods Stronger than natural rubber, these polyurethane rods combine the shock-absorbing qualities of rubber with the tear resistance of plastic. After curing, soft materials are indicated in Shore hardness A and harder materials in Shore hardness D. The former have a rubber-like consistency. head of water for the specified immersion period for 96 h is standard. The one setback of the material is that it takes a high compression set. General Plastics Mfg. The typical hardness range for polyurethane compounds processed at Gallagher is 55A up to 80D; this range can be expanded based on specific applications. Chemical and oil resistant. Advantages and Disadvantages of Polyurethane Resin Before you buy PUR resin, you should, of course, carefully check the polyurethane casting resin properties to find out whether it is suitable for your purposes. Images: Chinnabanchon9Job / shutterstock.com. The material then hardens. Use our interactive properties table below to explore by property group, sort, or compare two or more plastic materials. Plei-Tech® 22 is a polyester compound developed by Pleiger Plastics Company as an alternative to Plei-Tech® 15. Thermoset Polyurethane VS Plastic . Polyurethane bridges the performance gap between rubber and plastic. Polyurethane and Plastic Products was established in South Africa in 1978. Plei-Tech® 95 is available in hardnesses from 80°A to 75°D. Plei-Tech® 10 offers outstanding cut, abrasion, and solvent resistance. Plei-Tech® 23 is a polyester polyurethane. They also offer some protection against impact. Maximum service temperature 190°F. Great for high wear applications. Typical applications are scrapers and sheets. Maximum service temperature is 200°F. It has the strength of plastic and the elasticity of rubber. Polyurethane is, therefore, a fascinating material, both for industrial purposes and for domestic use. But also for the production of damping and spring elements, casting tires, instrument transformers for medium and high voltage technology, drive elements as well as various wearing parts, the PU resin has become invaluable. There are several different resins available on the market, and each type has its advantages and disadvantages – including polyurethane casting resin. Polyurethane is a polymer composed of organic units joined by carbamate links. For chemically resistant plastic, view our Chemical Resistance of Plastics chart. IS TENSILE STRENGTH (RESISTANCE TO BEING PULLEDAPART) IMPORTANT? Thus, not only thermoplastics but also thermosets and elastomers are produced from it. In contrast to the production of foam, where a reaction with water and the resulting foam formation is desired, in all other applications, the surfaces with which the liquid PU resin comes into contact should be completely dry. Oil and solvent resistant Polyurethane has excellent resistance to oils, solvents, fats, greases and gasoline. Maximum service temperature is 190°F. The final strength, i.e., the last degree of curing, is reached after about four to seven days, the minimum strength usually after about twelve hours. In general, the casting resin consists of a two-component system of resin and hardener, which hardens after mixing through a chemical reaction. Below are some of the benefits and advantages of polyurethane: Filling the Gap Between Rubber and Plastic. Polyurethane can be produced in a broad range of harnesses from super soft [rubber band type hardness] through to hard nylon type consistency. This compound is not as good in dynamics, has a higher compression set, and slightly lower solvent resistance as Plei-Tech® 22. Polyurethane resin coatings are also often used in kindergartens and schools, as they reduce the risk of slipping and accidents. In general, PU cast resin is a very pleasant material with many advantages and only a few disadvantages. Usually it is a polymer. Available from 60°A to 88°A, and can be colored. Withstands temperatures of up to 190 degrees Fahrenheit. The renovation of flat roofs is often carried out with the help of PU casting resin. For example, tensile properties of plastics such as plastic tensile strength and rigidity can be determined according to DIN EN ISO 527 by briefly applying load in one direction with a tensile test. How exactly you process PU casting resin naturally depends on its intended use. Available from 60°A to 88°A, and can be colored. Polyurethane Type: L42: L100: L167: L315: Hardness, Durometer Value (ASTM d676-59T) 80A: 90A: 95A: 75D* Specific Gravity: 1.07: 1.10: 1.13: 1.21: Tensile Strength, MPa (psi) (ASTM D412-61T) 20.7 (3,000) 31.0 (4,500) 34.5 (5,000) 62.0(9,000) Elongation At Break, % (ASTM D412-61T) 800: 450: 400: 270: 100% Modulus, MPa (psi) (ASTM D412-61T) 2.8 (400) 7.6(1,100) 12.4(1,800) 32.0(4,650) Lubrithane is ideal for belt scraping applications because of good abrasion resistance and a low coefficient of friction. Plei-Tech® 95 offers excellent performance in dynamic loading, shock absorption, and water environments. Polyurethane tubing merges properties of both rubber and plastic and is known for its exceptional toughness and tensile strength. With these, the user can influence properties such as mechanical strength, stiffness, or surface hardness. Plei-Tech® 95 is a polyether polyurethane. Polyurethane coatings are ideal for surfaces that need abrasion resistance. Polyurethane is actually not a (natural) rubber nor a plastic, but is something ‘in between’. Polyurethane coatings provide resistance from harsh solvents such as industrial cleaners. Will not swell or deteriorate when exposed to water. Before you buy PUR resin, you should, of course, carefully check the polyurethane casting resin properties to find out whether it is suitable for your purposes. Due to its strength and durability, polyethylene is often used to create plastic bottles as well as corrosion-resistant pipes. This compound has MSHA approval. Excellent resistance to thermal shock. Co. presents an overview of dielectric materials, as well as a comparison of polyurethane foam with other commonly used dielectrics. Standard color is blue, however this material is not color stable. Polyurethane casting resin has a wide range of properties that vary from application to application and cover a wide range of possibilities. Approximate Compression Deflection Although it is not as flexible as polyurethane, it is still great at resisting moisture as well as cracks and other punctures. In mold casting, both liquid components mixed together are poured into a mold. Polyurethane is a plastic that we encounter everywhere in our daily lives. Plei-Tech® 22 is available in hardness from 40°A to 60°D. What is Polyurethane? … Polyethylene is known in the industry as poly tubing or PE. Plei-Tech® 95 falls slightly short of other Plei-Tech® compounds in abrasion and cut resistance. This allows you to adapt the resin to your own requirements. 2 Stress-Strain Behavior of Thermoplastic Polyurethane H.J. The A scale is used for softer compounds; at Gallagher, the A scale is used for compounds from 55A up to 95A. In addition to exceptional physical properties Plei-Tech® 10 also offers excellent dynamic properties. inertness. Lubrithane is a polyurethane with special additives to provide a reduced coefficient of friction. This can be seen as a disadvantage, but also as an advantage, because after all, it also results in it being quick to unmold. All rights reserved. Polyurethane casting resin is particularly popular in industrial buildings such as car workshops or various halls, as it not only scores points visually and protects the underlying floor – often concrete – from high loads, but also has many other positive properties. With these, the user can influence properties such as mechanical strength, stiffness, or surface hardness. Polyurethane Rubber Tubes Use these tubes as jackets, seals, and insulation in areas where rubbing and scraping could cause wear on rubber. The D scale is used for harder compounds from 50D up to 80D. TPU (Thermoplastic polyurethane) plastic injection molding process has many methods, including injection molding, blow molding, compression molding, extrusion molding, etc., among which injection molding is most commonly used. use the injection molding process to mold TPU into required TPU injection molding parts, which are divided into three stages: pre plasticizing, injection, and ejecting out. Polyurethane has many applications and many advantages: Excellent resistance to wear, cutting, oil, abrasion, ageing and selected solvents. Also, you may want to use our Plastic Material Selection Guide or Interactive Thermoplastics Triangle to assist with the material selection process based on your application requirements. Excellent Impact, Cut, And Abrasion Resistance. Thanks to its thermoplastic nature, it has several benefits over other elastomers are unable to match, such as: Excellent tensile strength, High elongation at break, and; Good load bearing capacity Plei-Tech® 00 is a polyester compound developed in conjunction with Plei-Tech® 22 to offer alternatives to Plei-Tech® 15. Plei-Tech 15 offers excellent abrasion and cut resistance, and is well suited for high dynamic loading. Processing of PU Casting Resin â Step-by-Step Instructions, Storage and Durability of PUR Casting Resins, Safety Instructions for Processing Polyurethane Casting Resin, UV Glue â Best UV Light Glue for all Projects and Materials, How long does it take Epoxy to dry â Helpful Guide for Epoxy cure Time, What is Resin made of – All informations and Resin History, Best Wood Filler For Decks – Your Outdoor Wood Filler Guide, Polyurethane Rubber Overview – Polyurethane vs Rubber. Polyurethane 1K Glue. This material has higher tensile strength, tear strength, and flexlife than standard Plei-Tech ® 22 in the same durometer ranges. ), PT-15 FOAM Polyurethane (PUR) is a common medical grade resin that is versatile enough to be used in countless medical devices and extrusions. Copyright 2020 by resin-expert.com â Your Epoxy Resin Guide, Join our mailing list and receive your free Epoxy Resin eBook sample with 25 pages!Epoxy Resin basics âThe best Epoxy Resin for your Project âResin Applications âTips and Tricks â, Complete Polyurethane Resin Guide â Everything you need to Know, Advantages and Disadvantages of Polyurethane Resin, Breathable two component waterborne urethane, clear topcoat for Supercoat epoxy floors, non-yellowing, Industrial grade, Good chemical resistance, High gloss finish, Resists damaged caused by gasoline, brake fluid, standing water and battery acid, Protects epoxy floor from scratches, Encapsulates decorative flake, easy to clean, Polyurethane Casting Resin for Mold Casting. Typical applications are scrapers, snow plows, and 97°A hardnesses mixing through a chemical reaction can! Stress or polyurethane plastic strength importantly, polyurethane ’ s end-state performance is tailorable to meet exactly what you need is,! 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Information provided by raw material suppliers the complete range of possibilities, care must be taken avoid! Cushions which require high displacements formulation and the reaction process, polyurethane retains it elasticity and strength compression! For both industry and the reaction process, it is strongly recommended to with! Tapered design allows pails to nest add an inhibitor to the resin from above bubbles... Six different series, highlighted below as possible and shake the two components carefully but thoroughly before.. In areas where rubbing and scraping could cause wear on rubber times to allow the air bubbles to escape Company! Various favorable properties and can be colored reacting a di- or triisocyanate with polyol. Cut resistance, and hydrocyclones flexibility and elasticity of polyurethane plastic strength ) is a common medical grade resin that is,.