This material used in Kevlar helmets is produced with the same weave methods as fiberglass ones, then mixed with a very strong plastic compound. The benefit of using composites in a helmet shell is to enable a lighter shell to be produced whilst still being able to meet the regulatory standards and the lighter the helmet the less stress on the neck. Because of its brittleness, that greater flexibility translates into the helmet shell cracking on impact. Simplest fastest way to gain stiffness is to double the sheet thickness.... and double it again if there's room. This next article in our series on motorcycle helmets discusses the various materials used in the construction of the hard outer shell. The helmet … It’s often considered that cheaper results in cheerful, does that also translate to safe? You would think there would be some tradeoffs here. Other than extras such built-in Bluetooth communications, what sets advanced helmets apart from basic ones is mostly the shell - namely, its material. Composites, most metals, and many polymers look good. Polycarbonate is a thermoplastic made from a synthetic plastic resin which contains carbonate groups in its chemical makeup. Polycarbonate vs Fiberglass vs Carbon Fiber Safety. All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only. What Are The Different Types Of Motorcycle Helmets? So if you don’t want a shell at all, look for a helmet that does not have an EPS liner. You can see from the list above that in almost any feature you look at, polycarbonate is at least as good as ABS, and is typically better. Layering a sheet of polycarbonate behind a sheet of glass allows the bulletproof glass to only partially shatter while still absorbing the energy of the bullet. The combination of super high impact resistance and tensile strength, paired with polycarbonate’s transparency, is what makes it so useful. This makes polycarbonate a key ingredient in the manufacture of bulletproof glass. Motorcycle helmets all feature multiple layers of materials. ABS vs Polycarbonate for Folding Helmets Overall, polycarbonate is generally considered a higher end helmet material, due to its having a high impact resistance for its weight. Since the molecular structure of the fibers naturally occurs in even, parallel lines, Kevlar ends up with a much higher tensile strength than fiberglass. That can be dangerous for people with more fragile heads. The acrylonitrile made it resistant to breaking and melting. There's quite a few more considerations, and I think comparing the relative safety of shell materials of a flip-up is not the highest concern, of course, the manufacturers understand that, which is likely why none are Snell-approved. ABS and polycarbonate are amorphous, and very pliable at high temperatures. While it stands to reason that you should buy the best helmet you can afford, not everyone can afford the "best" helmet. If you look at impact strength, or ability to withstand a suddenly applied load, polycarbonate and ABS are both extremely strong. Any prices and availability shown are based on time of publication and may subsequently change. When not at work you can probably find him working on yet another ambitious project. Polycarbonate - flexes as it absorbs energy (less expensive material) Kevlar is actually a trademark name for a composite material developed by DuPont that has an aramid type fiber weave base. However, a consequence of being thin and airy is that an impact can become localized. In pure form, polycarbonate is a clear plastic used to make durable eyeglass lenses, helmet wind visors, bulletproof windows, greenhouse glass, and more. It also offers high tensile strength and excellent compression strength. One benefit of fiberglass composite helmets is greater flexibility under impact, which allows a shock wave to be spread out more evenly across the helmet. This toddler helmet from Nutcase is ideal for first-time riders, featuring an injection-molded ABS shell with Crumple zone EPS foam and MIPS for extreme protection. ABS vs Polycarbonate: Which Helmet Shell Material Is Better? When combined, however, the result is not only safe, but is actually used to save lives. And the polybutadiene made ABS pliable yet tough, and strong even at low temperatures. We couldn't agree more. A helmet shell embodying these characteristics will offer an extremely high level of shock deflection - without breaking. It’s also a very popular 3D printing material. As far as safety goes, all 3 materials will be safe. The hard outer shell is primarily designed to spread force from an impact over a wider section of the helmet, without cracking or becoming punctured. It depends. Of course, it is also used as a shell material for helmets. The GROW Flex Fit system ensures ultimate fit and comfort with a heat-sealed 3-piece pad set and snap-n-go Fidlock magnetic buckle. What does "ABS" mean in helmet manufacturing? What Else Should I Look for in a Folding Helmet, Non-toxic, but not suitable for medical implants, Non-toxic, used exclusively in medical implants. Since polycarbonate is so strong– yet transparent– it has become a hugely popular material for a variety of products. It’s incredibly tough and lightweight and when it’s combined with a polystyrene liner, offers great impact resistance. Under our MATERIALS Refine Search menu, you'll sometimes see check boxes for helmets made of Lexan. We mentioned earlier how virtually all helmets labeled as fiberglass, Kevlar, or carbon fiber contain some kind of composite mix of more than one fiber material. We use cookies to improve your experience on our site. Double Shell helmets use a very tough ABS plastic outer shell making for a viable multi-sport helmet. Polycarbonate plastics are more popular. Another requirement for hard hats is that they should be inexpensive and low weight. What the helmet is made of influences a number of factors including weight, comfort and safety rating. Youth leagues such as Pop Warner make wearing adult Polycarbonate helmets illegal, since, in a helmet-to-helmet collision, a Polycarbonate helmet could damage an ABS helmet… A resident expert and professional, Mike is passionate about all things technical and loves to share his knowledge. In fact hard hats are mainly made from polycarbonate or ABS and fitted via adjustable polyethylene straps inside the shell. As mentioned earlier, thermoset plastics differ from thermoplastics mainly in the way they cure and harden. The main drawback of ABS is that it degrades in UV light. Once the chemical reaction is complete and the helmet shell hardens, it is final. Often, carbon fiber helmets include some amount of Kevlar mixed into the weave to boost strength. Hybrid Shells use a combination of a hard shell and an In-Mold shell. which is lighter, and how durable are each? On the other hand, if you’re looking for a helmet that’s cheap, or offers more scratch resistance, then ABS is the better bet. In fact, Kevlar is so strong that it’s used to make bulletproof vests. These helmets are designed for commuters and people living in cities who don’t have space in their briefcases, offices, or homes for a bulky helmet. The GROW Flex Fit system ensures ultimate fit and comfort with a heat-sealed 3-piece pad set and snap-n-go Fidlock magnetic buckle. Because carbon fiber helmets can effectively absorb shocks that would fragment a lesser helmet, carbon fiber offers an extremely high level of protection against helmet failure and head injury at the higher speeds involved in motorcycle racing. But recently, two folding helmets have entered the market that are not based in EPS and therefore do not need a hard plastic shell at all. on ABS vs Polycarbonate: Which Helmet Shell Material Is Better? Overall, polycarbonate is generally considered a higher end helmet material, due to its having a high impact resistance for its weight. Helmet materials we offer fall into two groups: more basic thermoplastics (ABS, polycarbonate, and compounds that are a blend of both) and composite materials made of more complex fiber and resin mixes (fiberglass, Kevlar, carbon fiber, and composite blends). That's why we offer the choices we do, and that is one of the concluding points of this article: ALL of the helmet materials will protect your head, and we will always want you to be best informed about the variety we have. This toddler helmet from Nutcase is ideal for first-time riders, featuring an injection-molded ABS shell with Crumple zone EPS foam and MIPS for extreme protection. Box begin at the end of the price and quality spectrum with synthetic polycarbonate shells. Since inner layers of foam and padding tend to be more similar than different throughout the helmet spectrum, this article will focus on the most popular materials used to make outer shells. And being that it’s made out of relatively cheap synthetic products, ABS is extremely affordable. ABS and polycarbonate don’t crack under cold temperatures, or burn or melt at high temperatures. Polycarbonate is stronger than ABS, the other popular thermoplastic frequently used to construct helmet shells, but also more expensive and therefore tends to be featured on more expensive helmets. by Things That Fold Team updated on January 5, 2020 July 10, 2019 Leave a Comment on ABS vs Polycarbonate: Which Helmet Shell Material Is Better? Because of this property, polycarbonate helmets are often thinner and lighter, while offering the same level of protection as ABS helmets. Often, such mixes contain glass fibers, carbon fibers and/or other fibers mixed with an epoxy resin to create a new material. Polycarbonate 3D printing guide and tips. Polycarbonate (Thermoplastic) Close-Up Look At Thermoplastic Material. But it's worth noting that helmet design and technology have advanced enough so that even value-priced helmets provide higher levels of protection than they used to. There are several types of thermoplastics. The Cyber Helmets ABS plastic Solid Full Face Helmet. Polycarbonate, Fiberglass composite and Carbon Fiber compose most helmets with a layer of expanded polystyrene (EPS) foam. Which isn’t bad because there’s some real humdingers in there scoring one star and dragging the average right down. The noticeable difference is that thermoplastic helmets must be thicker (and heavier) to provide the same level of protection. That’s because the inside of helmets, or the liner, is typically made of a relatively fragile material called Expanded Polystyrene (EPS) which needs to be held together by a harder plastic to keep it from quickly degrading. This makes it super easy to turn them into a helmet shell through either a vacuum forming or injection molding process. Polycarbonate plastic is one of the most common materials motorcycle helmets are made from. Thermoplastics will harden and cure on their own (without the addition of curing agents) after they cool down. Aside from the shell material, you should also think about what kind of buckle your helmet has. There are two basic kinds of plastic materials used in helmet construction: thermoplastics, and thermoset resins. Having a thermoplastic shell means that the shell can be made in the same mold as the rest of the helmet, rather than being glued on after the fact like some lower end helmets. The second benefit of thermoplastics is that they can, theoretically, be recycled. Unless indicated otherwise, official helmet designation will follow whatever material is most prevalent in the composite mix used. ABS is used for youth football helmet shells because it offers excellent protection at a lighter weight. ABS is white or translucent ivory and polycarbonate is transparent. This process is repeated with strands at different angles until a weave pattern is reached and very high strength is achieved. Up to certain higher velocities, thermoplastic helmets can be equally as safe as more expensive composite fiber ones. Beneath the visible rigid outer shell, there's an impact-absorbing Styrofoam liner along with one or more layers of padding which is there for comfort, proper fit, and moisture absorption. After the epoxy is added, the mix is then heated and forced into a helmet mold via an injection molding process. ABS is the material that certain Petzl helmet shells are made of. Like all thermoplastics, ABS plastic is less expensive and heavier than woven compounds. Polycarbonate is a thermoplastic made from a synthetic plastic resin which contains carbonate groups in its chemical makeup. Kevlar is typically added to carbon fiber helmets to increase overall tensile strength. Across 109 polycarbonate helmets, the average SHARP star rating was 3.33 out of 5. The advantage of plastic helmets is, however, their lower cost. There are many different materials helmets can be made out of. Bottom Line: Should I Buy a Helmet Made of ABS or Polycarbonate? But first, let’s begin with an overview of what makes ABS and polycarbonate special. In fact hard hats are mainly made from polycarbonate or ABS and fitted via adjustable polyethylene straps inside the shell. Many new folding helmets have hit the market recently, so there’s a lot of competition in this space, and a lot of thought has gone into making them super convenient. An old motorcycle magazine in 2005* tested two helmets, and the polycarbonate transfered less energy to the riders head than (size S/M) Construction: EPS & EPP w/ABS shell. There are many different materials helmets can be made out of. Because ABS plastic is chemical- and heat-resistant and offers good protection against dents, it's widely used in helmets. While fiberglass materials are basically inexpensive, they are easily molded into a form that makes them lightweight and strong. How Do I Determine My Correct Motorcycle Helmet Size? So now i am in the market for a new helmet. Petzl Boreo ($60) Weight: 10.1 oz. which is lighter, and how durable are each? ABS had the best qualities of each of its components. High-end helmet shells are often made from polycarbonate (GE's Lexan for example). This means that the force gets focused on one area. Snell (M2015) - A non-profit in the United States founded after the death of Pete Snell, a sports car racer who died from head injuries. Part 1: The Essentials, How Helmet Construction And Materials Protect Your Head, X-803 Puro Flat Ultra Carbon Full Face Helmet. Polycarbonate Motorcycle Helmet Reviews. ABS is the lighter weight of the two but that is only one factor when considering what luggage to buy. You can also color them however you want, or even keep them translucent. While Kevlar material naturally has high tensile strength, it does not hold up as well under compression. Both ABS and polycarbonate are plastic, like much of the rest of your helmet. Synthetic Reinforced Shell (SRS) helmets are made from a heat-cured thermoplastic resin (see 3.3 Advanced Thermoplastic Resin Helmets), but with multiple layers of glass fibers and other organic fibers added. Obsessed with motorcycles just like with anything else with a motor and wheels, Michael is ready to handle all of your service and upgrade needs. On a high level, polycarbonate is more expensive, flexible, softer, and lighter. Lightweight luggage is desirable as it means you can pack more of your own belongings within the limits of an airline. The combination of those three chemicals produced Acrylonitrile Butadiene Styrene– ABS. His articles and write-ups cover everything from routine maintenance to performance and styling modifications. When considering polycarbonate, consider that polycarbonate plastic is clear, transparent in color, making it the ideal choice of material. It can even be as cheap as $1.50/lb. Until recently, all of the folding helmet shells have been made of either ABS or polycarbonate. Polycarbonate & Lexan. We’ve mentioned some “hardshell helmets” with ABS plastic shells, such as the Black Diamond Half Dome and CAMP USA Armour. Polycarbonate is stronger than ABS, the other popular thermoplastic frequently used to construct helmet shells, but also more expensive and therefore tends to be featured on more expensive helmets. ABS is an acronym for Acrylonitrile Butadiene Styrene. 2 oz. Composite fiber helmets are constructed by placing criss-crossing layers of fiber strands into an existing mold, adding resins or other fillers, then heating the mix. Unless indicated otherwise, a carbon fiber helmet will be made mostly of carbon fiber material. With thermosets, however, a curing agent (usually an epoxy, polyurethane, or other ingredients) must be added to create a chemical reaction that will allow the plastic to harden. Key Difference – Polycarbonate vs ABS Polycarbonate and ABS are widely used thermoplastic elastomers and have their unique set of properties. Polycarbonate helmets tend to be thinner and lighter, but also more expensive and will scratch more easily. ABS vs Polycarbonate: Which Helmet Shell Material Is Better? While all these plastics offer a good combination of rigidity and flexibility, they are less strong pound-for-pound than composite weave materials. Nevertheless, ABS helmets do have an aesthetic advantage over polycarbonate helmets in that their surface does not scratch as easily. Motorcycle Boots | Making the Best Choice Based on Your Bike & Riding Style, Choosing The Best Cover For Your Motorcycle, What Tools Do You Need To Work on Your Motorcycle? Let’s look at that list again, this time comparing ABS to polycarbonate side-by-side. Lighter weight helmets make riding more comfortable - especially if you're doing any kind of aggressive riding on or off the road. SAE certified mechanic and technical writer, X.G100R Motordrome 2X-Large Yellow Full Face Helmet. Copyright © 2018-2020 MOTORCYCLEiD.com. When thousands of these high-strength fibers are woven together and combined with plastic resin and other aramid type fibers, that fabric is known as reinforced "carbon fiber" material. by Things That Fold Team updated on January 5, 2020 July 10, 2019 Leave a Comment on ABS vs Polycarbonate: Which Helmet Shell Material Is Better? What ABS and Polycarbonate Have in Common, Side-By-Side Comparison of ABS versus Polycarbonate. There are a few physical properties that make both ABS and polycarbonate useful for engineering. ABS plastic is a thermoplastic blend which combines the strength and rigidity of certain polymers with the ruggedness of polybutadiene rubber. Conversely, the main drawback of polycarbonate is its high price and that it can get scratched. Since color, shape, size, and design are key factors in selecting a helmet, the ability to make ABS or polycarbonate take on any form and color makes them ideal materials for a helmet. It has been associated with high quality helmets for more than 20 years, particularly those that are inmolded. There are many different materials helmets can be made out of. But the two most common shell materials for folding bike helmets are ABS and polycarbonate. to stay up-to-date on our promotions, discounts, sales, special offers and more. SNELL vs DOT vs ECE Helmets - Motorcycle Helmet Safety Ratings - Jafrum.com - Duration: ... Polycarbonate vs Acrylic Plastic - Duration: 3:08. They will typically give the material of the helmet. So - whats the differences and pros and cons of Kevlar reinforced fiberglass, vrs polycarbonate, vrs ABS? You’ll notice right away that they have a lot in common. If you’d like to see more helmets, you can look at our list of folding helmet reviews. Therefore, any plastic helmet shell must be thicker in order to meet safety guidelines - and that additional material makes them larger and heavier. So now i am in the market for a new helmet. Thermosets are among the harder types of plastics. These properties have made these polymers to be used in wide range of applications. Composite fiber helmets are made from various fibers such as Kevlar, fiberglass, and carbon fiber, and categorized accordingly under the "MATERIAL" Refine Search menu. The key difference between polycarbonate and ABS is that polycarbonate is an amorphous polymer made from melt polycondensation of bisphenol A and diphenyl carbonate, whereas ABS is a polymer blend made of acrylonitrile, butadiene, and styrene. Weight: 1 lb. The cheap ones are made from ABS, the more expensive ones are made from fiber reinforced plastic such as polycarbonate. The cheap ones are made from ABS, the more expensive ones are made from fiber reinforced plastic such as polycarbonate. Like the helmets of other occupations over time, or the game of football itself, the football helmet has evolved: first made of leather, now manufactured from polycarbonate (PC), its abilities have grown with our technological advances. This durability is also beneficial if a carbon fiber helmet is accidently dropped, because it will be more resistant to scratches and cracks. Many fiberglass helmets feature additional high-strength materials such as carbon fiber and Kevlar in the weave pattern. Damascus Gear Damascus Gear® Riot Control Helmets feature a high-impact ABS molded shell with neck protector and clear/polycarbonate tactical face shield that is gasket sealed. Polycarbonate (PC) is the product of two rather unappealing chemicals: BPA and a gas used primarily as a chemical weapon in WWI. Polycarbonate plastic is one of the most common materials motorcycle helmets are made from. Thermoplastics are easy to mold at high temperatures. Despite polycarbonate’s extraordinary impact strength, ABS still has a higher impact strength than any of the other common engineering plastics. The fact that they work in freezing or hot conditions is critical if you want your helmet to get approved by almost any standard helmet safety test. Inside the shell is a fully developed In-Mold design. In general, helmets made of ABS are cheaper and heavier, but don’t scratch as easily. Fans of the material appreciate how well fiberglass can achieve the difficult task of combining flexibility and hardness. Because a chemical reaction is not necessary to cure these plastic mixes, they simply need to be heated into liquid form and poured into a helmet-shaped mold where they will cool and harden. Polycarbonate is extremely strong– it has a much higher impact strength than the next strongest common engineering plastic, ABS. And of course, you’ll find it on helmets. You can see from the list above that ABS is a pretty good material, but not as good as polycarbonate. You can see in the image above that polycarbonate has twice the impact strength of ABS. Pricing on these helmets will vary depending on their makeup. Ventilation: Adjustable … The discovery of ABS began in the 1930s with polystyrene, a clear, hard, brittle, plastic that’s prone to melting if it gets hot. However, do note that helmets marketed as "fiberglass", "carbon fiber", etc., usually contain a mix of more than one of these fiber types. Another requirement for hard hats is that they should be inexpensive and low weight. Technically, they're all "composite" helmets. What makes them great for helmets is that they are resilient to impact, and can survive a wide range of temperatures. Polycarbonate plastics are more popular. Like polystyrene, it was hard and colorless. Although note that in practice it’s not so easy to recycle your helmet. 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Quality spectrum with synthetic polycarbonate shells complete and the helmet you are considering buying or or. Damage an ABS helmet … polycarbonate vs fiberglass vs carbon fiber has the benefits of being strong!
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