. 0 GPa. Kevlar is an aromatic polyamide, or aramid, which is a lyotropic liquid crystal polymer (LCP), where the liquid crystalline phase exists upon dissolution of the polymer in a solvent. On the other hand, generic aramid fibers might be more budget-friendly and accessible. 2000, Comprehensive Composite Materials Hung Man Yang 1. The above describes the basic strand by composition, type and diameter. May 23, 2022 · High-performance fibers have many similarities and differences. The collections of C–H stretches in the range 2500-3100 cm–1 were unique for each fiber due to processing specifics. It was the first organic fiber with sufficient tensile strength and modulus to be used in advanced composites. The answer you want is dependent on so many variables. Its exceptional strength and stiffness led to the invention of Kevlar, a synthetic fibre, woven into a fabric and layered, that, by weight, has five times the tensile strength of steel. Dyneema isn't a woven fabric like Kevlar but is instead a thin, flexible composite made from two layers of unidirectional fibers held in place with a flexible resin. The numbers identify strand weight and construction. Dyneema/Spectra[edit] Dyneema and Spectra are brand names for similar Ultra-high-molecular-weight polyethylene fibers. Sailing ropes are made from many different materials, mainly synthetic fibres. Kevlar has stated that it is 5 times stronger than steel and Dyneema 15 times stronger. Here’s a breakdown of each fiber: 1. These materials have been tested in yarn, tether/cable, and fabric forms. Notably, it boasts a superior strength-to-weight ratio and very low stretch, making it stronger than comparable wire rope while remaining lightweight enough to float. Spectra is kind of the new Kevlar (super high molecular weight polymer) it's very hard to work with as far as weaving goes. Kevlar was originally developed as tire chord material for belts and carcasses in radial tires. At least for carbon outer A variety of high-performance fibers, including Kevlar, Nomex, Vectran, and Spectra, have been tested for durability in the space environment, mostly the low Earth orbital environment. UHMWPE is lightweight and durable, while Kevlar excels in tensile strength. Laser Pro Gold is a popular brand of Spectra that is specifically woven for kite flying and is standard on Revolution kites. Jun 13, 2023 · Like Kevlar, Twaron can degrade over time, and it’s also on the more expensive side. The QCSquared 3-A was certified in 2010 and is made with Kevlar XP and Spectra 3118, about 50/50, and we see examples of that laminate vest that just keeps going and going because of the previously aforenoted improvements in laminates. It is worthwhile to have some knowledge of the most commonly used fibres and their characteristics. Many high-quality constructions of Spectra® are being made. The strand We would like to show you a description here but the site won’t allow us. Its base polymer is poly (p-phenylene terephthalamide) (PPD-T or PPTA in some literature). The non-twisted equivalent for 7781 would be ECDE 75 1/0. The Kevlar fiber/epoxy matrix composite materials can be used in marine current turbines (MCT) or wind turbines due to their high specific strength and light weight compared to other fibers. Sep 21, 2022 · In this article we review the specs, uses, and differences between Kevlar vs Nomex. Feb 18, 2009 · hello, Kevlar is sometimes used in the outer laminate of a cored hull, right next to the core, for impact protection. Prepreg Composite Materials There are a variety of prepreg composite fibers available, including Kevlar, Aramid, Dyneema, Spectra, and more. Kevlar GDbot Thermal Soaring 16 Sep 28, 2008 01:55 PM Hitec Eclipse w/spectra vs Futaba 9Z w/spectra Sloper Mario Radios 9 Oct 03, 2003 04:22 PM Jun 13, 2023 · Like Kevlar, Twaron can degrade over time, and it’s also on the more expensive side. Aug 1, 2011 · Comparison of the spectra of a) as-received and b) Kevlar sample aged for 12 days at 60 °C + 0. Kevlar GDbot Thermal Soaring 16 Sep 28, 2008 01:55 PM Hitec Eclipse w/spectra vs Futaba 9Z w/spectra Sloper Mario Radios 9 Oct 03, 2003 04:22 PM Aug 13, 2020 · Since their creation, Kevlar and Dyneema have been rivals in the string-knit glove world. This new substance is changing the face of bullet proof wear for police and the military, but what are the differences and the big advantages of SPECTRA? Let's first examine the structure of each of the two materials. Sep 4, 2022 · Spectra Spectra lasts just as long as Dyneema because of their identical chemical composition. The resin systems are going to vary wildly by manufacturers, what is your end goal here? Resin systems are also closely guarded trade secrets. However, two of the most popular options on the market today are carbon-fiber and fiberglass composite fabrics. Spectra is the same as Dyneema, but is produced by Jan 11, 2021 · Honeywell’s Spectra ® gel-spun UHMWPE fiber continues to be their workhorse, used in the Spectra Shield ® 6000 composites series. Don't be afraid of all the technical or chemical terms. Kevlar is available in fiber form including chopped fiber. Sprint - Specta 900 Fiber Sailing Rope Sprint is a 12 strand single braid composite line constructed from a blend of Spectra™ 900 and polyester fibers. Kevlar is slightly lower, at 3. There are multiple different types of synthetic winch lines available today, many of them are made from Dyneema fibers, while others are made from, Technora®, Vectran®, Spectra®, or Kevlar®. Apr 1, 2014 · Fiber-Metal Blends: Many durable, abrasion-resistant gloves are made of a woven fabric blend of Spectra, Kevlar and stainless steel. However, dyneema has a slight edge over spectra with its slightly higher tensile strength range. It has approximately five times the tensile strength of steel with a corresponding tensile modulus. The use of covers will help prolong its lifespan, but at the cost of higher windage. There are performance differences in the specific fiber properties (product grades) and manufacturing process. It is also known as the strength-to-weight ratio or strength/weight ratio. Oct 31, 2024 · The fiber is known especially from Dupont Kevlar, which was the first company with a commercial version for bullet proof vests, followed by Twaron from Teijin. Jul 16, 2025 · Kevlar vs Carbon Fiber: Material Properties and Performance Comparison Carbon fiber typically offers higher tensile strength, ranging from 3. The lyotropic LPC is then spun into fibers, with the liquid crystalline order resulting in the highly-oriented fiber structure. Kevlar is a high strength, high Spectra P60 Spectra P60 is an advanced fiber variant engineered for maximum flexibility and comfort without compromising on protection. Jun 21, 2025 · Spectra offers better flexibility and a softer feel, while Kevlar is stiffer and less pliable, affecting fabric drape and comfort. Here is the comparison between Vectran vs Kevlar fibers. This makes it five times stronger than steel on an equal weight basis. The unique properties and distinct chemical composition of wholly aromatic polyamides (aramids) distinguish them—and especially Kevlar®—from other commercial, man-made fibers. Spectra and Dyneema might as well be steel chain - no stretch, so no reduction in the shock load, so they must hold a greater force. The above description would be for ECG 150 1/2 yarn, or more simply G-150 1/2, used in style 1581 fabric. Instead, they’re often interwoven with cheaper fibers like aramid (Kevlar) and nylon for many Jun 22, 2025 · Kevlar®, a specific aramid fiber brand, often carries a premium price due to its trademark status and specialized manufacturing. More shock to other pieces of protection puts more wear on them, you need to replace them more often, etc. Aramid fibers are often blended with even lower-stretch and higher strength carbon fibers within the same racing sail. These “superlines” or “superbraids” are dense, thin, and taut, with almost no ability to stretch or forgiveness. Fiber-Metal Blends—Blending of old and new technology there are several styles of cut & abrasion-resistant gloves made of a woven fabric blend of Spectra, Kevlar and stainless steel. Jul 17, 2013 · Cruising World Currently, there are eight different fibers used in sailmaking: carbon fiber, Spectra/Dyneema, Twaron, Technora, Kevlar, Vectran, polyester, and Pentax (which is basically “Dacron on steroids”). Use our comprehensive fiber guide to understand the different rope materials available and choose the right one for your needs. While both of these features would make it wonderful for standing rigging, it is very susceptible to UV damage. Oct 30, 2021 · Despite of the fact that more and more accessory devices are integrated to functionalize a ballistic helmet system, its core ballistic protective function needs to be improved with weight reduction was and still is the main course in engineering design. May 27, 2003 · Spectra v. The common uses for Kevlar® today include: adhesives and sealants, ballistics and defense, belts and hoses, composites, fiber optic and Electro-mechanical cables, friction products and gaskets, protective apparel, tires, and ropes and cables. The S-glass version for style 6581 fabric would be SCG 150 1/2, where “S” denotes S-glass. Some material samples were tested in a simulated space environment, such as the Atomic Oxygen Beam Facility and solar simulators in the However today a new material called SPECTRA has been released on the market and SPECTRA is more flexible, lighter and stronger than KEVLAR. Jan 1, 2006 · The strength loss of Spectra ® and Kevlar ® yarns is the least among the four yarns with Kevlar ® being better than Spectra ®. Fib2(16). dyneema: When comparing the tensile strength properties of spectra and dyneema, it becomes evident that both materials exhibit remarkable strength. The absorption band of the newly formed carboxylic acid groups is circled. Vectran and Technora are brand names too and 'cousins' so to speak of Kevlar and heavier, weaker and bulkier for the same strength. There is no question that sailcloth manufacturers have gotten better at incorporating aramid fibres in their offerings so that the sails don’t explode after just a few regattas like Kevlar sails did in the bad old days—or good old days, if you were a sailmaker. Dye is added directly to the AMSTEEL ® BLUE AmSteel-Blue is a high-performance, 12-strand single braid made from 100% Dyneema fiber, offering exceptional strength and durability. 07. Only three of these—Dacron, Vectran, and Spectra—can be readily woven into a viable sail fabric. A variety of high-performance fibers, including DuPontTM Kevlar®, DuPontTM Nomex®, Kuraray VectranTM, and Honeywell Spectra® have been tested for durability in the space environ-ment, mostly the low Earth orbital environment. 68 W/m 2. Dyneema or Spectra, which are brands of UHMWPE fibre win hands down over the others. Spectra® is a register Jan 11, 2016 · It is in the Kevlar family and exhibits incredible strength with virtually no creep. Inegra might be your solution. Aug 12, 2009 · read on here recently where someone said that carbon fiber may be stiff and brittle. A lot of the time, they are self-reinforced (they use PE as the matrix, and they are UHWPE. Feb 11, 2016 · Dyneema, Spectra, Dynex or Nylon. Kevlar, Dynemma, Spectra, all are good impact and abrasion resistant materials. Nov 10, 2017 · The paper reviews the characterization of high-performance hybrid textile composites and their hybridization effects of composite’s behavior. Polyester and Nylon Double Braid, 3 Strand Twisted or Polypropylene, Manila, this rope strength guide helps determine diameter, tensile and working load of the various ropes specific for your use. SSL 2. does kevlar keep it's load spreading properties when laminated with epoxy? for instance, i can get 5. Anybody have experience with these two materials? May 2, 2008 · This chapter covers recent developments in the production of well established high performance fibers such as Kevlar, PBO, Spectra and Dyneema fibers and depicts a new super strong M5. Yet their tensile strength is similar Dyneema has a lighter density and thus it has […] Fans of Spectra will point out that it will stretch only about 3%, or about half as much as Dyneema. The problem with Spectra and Dynemma is, they are low-surface entergy plastics. [26] In the mid-1970s, DuPont, the company which employed Kwolek, introduced Kevlar. UHMWPE as a fibre is higher in strength and lower in weight compared with Kevlar. While they share some similarities, there are differences in their chemical composition, manufacturing processes, and properties. Metal Mesh: Interlocked stainless steel mesh offers superior cut and puncture protection due to its strength. It was found that spectra of the fibers could be combined into two groups of Kevlar-Twaron-Taparan and Heracron-Rusar NT. Materials with high specific strengths are widely used in aerospace applications where weight savings are worth the higher material cost. 7oz E glass, 5. Twaron, the tradename for the material by Teijin, is very similar in its chemical structure. Compare Kevlar®, Vectran®, and Spectra® High Performance Fibers for strength and heat resistance in aerospace and industrial applications. Dyneema, Spectra, and Kevlar are all high-performance fibers commonly used in various applications where strength and durability are crucial. The promising performance of Kevlar fabrics and aramid had widely implemented in numerous ballistic Mar 17, 2023 · While Kevlar is quite sturdy with its tensile strength of 3,620 megapascals (compared to the 400 megapascals of structural steel), it pales in comparison to UHMWPE, which has a tensile strength so high it can stretch from 4 to 10 giga pascals, making it the world’s strongest fiber. Kevlar Kevlar is a type of para-aramid synthetic fiber, renowned for its high tensile strength-to-weight ratio. Aug 17, 2024 · Description: Kevlar rope is made from a fiber called Kevlar (an aramid fiber), known for its exceptional heat resistance and high strength, making it ideal for use in various specialized fields. UHMWPE fibers have an extremely high strength-to-weight ratio, but a very low melting point (266-277F) compared to other common rope materials. Your problem is, finding an epoxy grade sizing/system. The latest introduction, Spectra Shield 6166 for hard body armor, provides the highest energy adsorption for high-power rifle or high-energy threats. In fiber or textile applications, tenacity is the usual measure of specific strength. It’s similar to Dyneema, which is also an HDPE fiber. Mar 6, 2018 · Spectra®- or Vectran®-based rope is a great option for this. 3 p-Aramid Fibers Kevlar fiber was the first p -aramid fiber commercialized by DuPont Company in 1972. We would like to show you a description here but the site won’t allow us. We sourced the information for this article from sailcloth manufacturers, sailors, and sail repair experts. It’s a relatively new material to the market and many Service Thread clients have requested more information about it. pmd Kevlar® (a Dupont product) and Teijin’s Twaron® and Technora® are commonly used aramid fibers in sails. Sep 20, 2016 · IR and Raman spectra of the aramid fibers Kevlar, Twaron, Heracron, Taparan, and Rusar NT that were produced under identical conditions are presented. The dielectric constant of a "Kevlar" laminate is about one unit lower, and the loss tangent equivalent, to that of a glass fiber reinforced item that uses the s_me resin. 6 GPa, but still strong enough for most protective and industrial uses. Both electrically and thermally it is an insulator, Table V Mar 18, 2005 · If this is a whitewater boat, I'd suggest kevlar, or spectra or dyneema cloth as yokebutt suggests. Thus, "Kevlar" is transparent to elec-tromagnetic radiation and can be used a_vantageously as radome material. We can custom color Fiberglass, Kevlar, Spectra, Dyneema & Hybrid fabrics Yes, we also sell flat wide & narrow composites fabrics The Federal Trade Commission 's official definition of olefin fiber is “A manufactured fiber in which the fiber forming substance is any long-chain synthetic polymer composed of at least 85% by weight of ethylene, propylene, or other olefin units” [6] Polymerization of propylene and ethylene gases, controlled with special catalysts, creates olefin fibers. Sep 1, 2019 · Ballistic impact mechanism is a very complex mechanical process mainly depends on the thickness, strength, ductility, toughness and density of the tar… Other materials, such as Kevlar, carbon fiber, Spectra, Technora, and Vectran, are also common in some applications. Spectra is incredibly strong and lightweight, making it ideal for use in body armor. Spectra® and stainless steel core gloves are excellent for cut protection in food preparation operations. Not approved for food use in spun yarn form. Jul 1, 2021 · Considering changing you boat rigging to composite but confused by the options? Sam Fortescue takes a look at the pros and cons of various solutions Sep 30, 2019 · Learn more about the benefits of Innegra™ and how it can be put to the best use in a variety of applications. Park’s Aerospace Composite Materials ark of E. du Pont de Nemours and Company. What are bulletproof vests made of? This guide breaks down Kevlar, UHMWPE, ceramic, and steel, comparing strengths and weaknesses for soft and hard armor. Kevlar® (a Dupont product) and Teijin’s Twaron® and Technora® are commonly used aramid fibers in sails. 7oz carbon fiber, and 5. Spectra Spectra is a high-density polyethylene (HDPE) fiber produced by Honeywell. We’ll look at Kevlar, Spectra Shield, Dyneema, Ceramic, and Steel. While untreated/unexposed Zylon ® yarn is initially the strongest among the four yarns; it became weaker after exposure to UV. We also share where to purchase these textiles depending on your needs. 97 g Nov 18, 2015 · Kevlar is an aromatic polyamide or aramid fiber introduced in early 1970s by DuPont. Aramid is commonly used in both bulletproof and stab-proof vests due to its exceptional strength and flexibility. 0 Breakaway Link - SSL 2. Rope Fiber Selection Guide: Fiber Properties and Typical Values STRENGTH: Kevlar® is an organic fiber in the aromatic polyamide family. Nov 8, 2025 · While Kevlar offers superior heat resistance, Spectra is significantly stronger and lighter pound-for-pound. 7oz kevlar. This allows the fibers to cross Jan 21, 2025 · Choosing the right body armor often comes down to the UHMWPE vs Kevlar debate. Dyneema® has a manufacturing facility in Greenville, North Carolina for the fiber and all fabrics are developed in Mesa, Arizona. You’ve already probably heard about these fibres’ weight-to-strength ratio before. In dyneema grid, a popular fabric used by Golite, ULA, MLD, even McHale only the white threads are dyneema, the rest is regular nylon. Dyneema ®, polyester, aramid fibres, and others are explained on this page and their typical applications on board sailing yachts. Spectec 12 - High Strength 100% Spectra™ Fiber Rope Spectec-12 is a hollow braided 12-strand rope using 100% Spectra™ fiber. Carbon fiber is stiffer, with a modulus between 200 and 800 GPa. Kevlar resists UV degradation better than Spectra, which is more vulnerable to sunlight but excels in damp conditions. 0 to 3. Jul 22, 2024 · Manufacturers create braided lines by weaving together numerous extra-strong synthetic microfibers such as Dacron, Kevlar, Dyneema, and Spectra. Apr 22, 2021 · Dyneema® vs Spectra Though similar, Dyneema® is not the same as Spectra. Each fiber has benefits and disadvantages and can be chosen depending on your unique application. Dyneema and Spectra fibers are rarely sold in their pure form because they’re so expensive. The two major generic classes of synthetic fibres for ballistic composites are Ultra High Molecular Weight Polyethylene (UHMWPE) fibre (0. This allows a high level of abrasion resistance to be achieved with much less fibre, reducing the trade off between comfort, style and performance. 5 to 6. New covers are even being made out of Spectra® and Technora®, which adds greater grip around winches and reduces abrasion to practically zero. Metal mesh gloves are very cut- and abrasion-resistant and are used often in meat or poultry Jan 20, 2023 · Today, sailcloth has evolved into high-performance fabrics, including blends of Kevlar, Spectra (UHMWPE), carbon fibers and laminated composites, designed for extreme strength and minimal stretch in racing and cruising yachts. However today a new material called SPECTRA has been released on the market and SPECTRA is more flexible, lighter and stronger than KEVLAR. Considered are research works based on the finite-element modeling, simulation, and experimental characterization of various mechanical properties of such composites. The latter Feb 22, 2021 · Even though natural fiber reinforced polymer composites (NFRPCs) have been widely used in automotive and building industries, there is still a room to promote them to high-level structural applications such as primary structural component specifically for bullet proof and ballistic applications. Read pro's and con's and best uses (and see full explanations for each along with links to geek out even further). Fans of Spectra will point out that it will stretch only about 3%, or about half as much as Dyneema. Typical applications: The extreme tensile strength and lightness of Kevlar leads to applications including knife-and bullet-proof clothing, boat hulls, racing cars, cut-resistant gloves, fiber-optic cable-sheathing, firefighters suits, fuel hoses, helmets, aircraft components, radial tires, spacecraft, bicycles, tennis and squash SPECTRA, DYNEEMA, Ultra High Molecular Weight Polyethylene Bullet Proof Panels, also known as just Polyethylene or PE or UHMWPE are the strongest, lightest, composite ballistic material made today. if i was only interested in ding resistance, would kevlar be my best bet? i've done searches and found not much other than how hard it is to sand and cut I’ve heard of kevlar and vectran being used to resist impact and i have some experience with kevlar but none with vectran, in fact i haven’t seen it much at all even online. It features ultra-thin filaments that are tightly woven to create a silky-smooth, lightweight fabric ideal for extended wear in tactical and law enforcement applications. Now, let’s delve into the different materials used in the construction of bulletproof vests. Twaron is another PPD-T fiber manufactured by Akzo Nobel since the early 1980s. Fiber Options and Descriptions Applied Fiber – Synthetic Fiber Technology Utilizing: Spectra, Vectran, Kevlar, Zylon, Dyneema, Technora, Twaron, Plasma Technology improvements have allowed for stronger more durable synthetic fibers that can be spun into cords, ropes, cables, and tendons. Apr 5, 2022 · AlliedSignal, with its license in hand and no potential intellectual property disputes on the horizon, started marketing its own fiber, Spectra Shield®, as a ballistic competitor to Dupont’s Kevlar®. I. Dyneema (also known as Ultra High Molecul Apr 4, 2022 · While UHMWPE and Kevlar are both notable for their strength and overall effectiveness, the two materials do share some differences, and knowing how each fiber differs can help you choose the right one for the job. Jun 24, 2024 · Spectra fiber is a high-performance polyethylene material that is made from ultra-high molecular weight polyethylene (UHMWPE) and is known for its exceptional strength, durability, and resistance to abrasion and impact. Dyneema vs Spectra: Cost Cost is hard to quantify. Sep 28, 2017 · I think Dyneema and Spectra are trade names for the same fiber. All of these fabrics are much harder to obtain, and to work with as they float in the resin. Sailing rope materials compared May 23, 2022 · High-performance fibers have many similarities and differences. Kevlar is a high strength, high Sep 11, 2008 · Kevlar is a brand name from Dupont for their version of P-Aramid ballistic material. This guide compares their properties for ballistic and protective applications. Dec 12, 2024 · Spectra vs.

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