what is the tensile diffenence between mormal nylon 6.6 yarn and that of Codura?
552680
Firstly it depends on the denier, manufacturer / source.\n\nSay for 840D N66 would be in the range of 9.5 to 9.75gpd, Cordura would be 9.75+gpd.\n\nYou should check the website www.matweb.com, a fabtastic source for full tech specs.\n\nAlso use spell check option on posting questions.
259548
Hello, You might find this useful :o)\n\n\nDouble Shear Strength\n(Cold Drawn – 0.442” [11.23 mm] start size)\n\n% Cold DrawnShear Strength, ksi (MPa)\n1089 (614)\n2098 (676)\n30106 (731)\n40113 (779)\n50122 (841)\n60130 (896)\n\nCondition     Size   Double Shear \n                             Strength ksi (MPa)\nAnnealed   3/8” Ø (9.6 mm)     86 (593)\n \nNitronic 60 Austentic Stainless, 40% Cold Worked\n\nComponent    Wt. %  \n \nCr 17   \nFe 62   \nMn 8   \nN  0.14   \nNi 8.5   \nSi 4   \n \nDensity 7.62 g/cc 0.275 lb/in³   \n\nMechanical Properties \n  \nHardness, Brinell = 346 (Estimated from Rockwell C)\nHardness, Knoop = 413 (Estimated from Rockwell C)\nHardness, Rockwell A = 69.5 (Estimated from Rockwell C) \nHardness, Rockwell C = 38 \nHardness, Vickers = 362 (Estimated from Rockwell C) \nTensile Strength, Ultimate = 1345 MPa (195000 psi)   \nTensile Strength, Yield = 1055 MPa (153000 psi)  0.2% Offset \nElongation at Break = 20 %\nReduction of Area = 57 %\nModulus of Elasticity = 179 GPa (26000 ksi)  In Tension \nPoisson's Ratio = 0.3\nShear Modulus = 69 GPa (10000 ksi)\n\n\nThanks!\n\nMorgan :o)
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The Basics of Yarn Making for Students \n\nThis summary covers the yarn making processes used by SANS Fibres, including:\n\nWhat the basic raw materials are and why we use them. \nWhat the main requirements of our products are.  \nWhat the steps are in the yarn making process. \nA brief description of how each step is carried out and what its purpose is. \nAt the site below
178413
Not a science major, but nylon is a synthetic not a chemical compound.  Metals are chemical compounds.  They shouldn't fuse together.
730379
Kevlar is DuPont Company's brand name for a particular light but very strong aramid fibre. It was created in DuPont's labs in 1965 by Stephanie Kwolek and Herbert Blades, and was first used commercially in the early 1970s. It can be spun into ropes or sheets of fabric that can either be used as-is, or used in the construction of composite components. It is now used in a wide range of applications - from bicycles to body armor - due to its high strength-to-weight ratio, five times greater than that of steel.\nWhen Kevlar is spun in the same way that a spider spins a web, the resulting fibre has tremendous strength, and is heat- and cut-resistant. The fibres do not rust or corrode, and their strength is unaffected by water. When woven together, they form a good material for mooring lines and other underwater objects. However, unless specially waterproofed, Kevlar's ability to stop bullets and other projectiles is degraded when wet.\n\nThere are three common grades of Kevlar: Kevlar, Kevlar 29, and Kevlar 49. Kevlar is typically used as reinforcements in tires and other rubber mechanical goods. Kevlar 29 is used in industrial applications such as cables, asbestos replacement, brake lines, body armour (knife or bullet resistant). Kevlar 49 is considered to have the greatest tensile strength of all the aramids, and is used in applications such as plastic reinforcement for boat hulls, aeroplanes, and bikes.\n\nKevlar's main weaknesses are that it decomposes under alkaline conditions or when exposed to chlorine or UV light. While it can have a great tensile strength, sometimes in excess of 4.0 GPa, like all fibers it tends to buckle in compression.\n\nKevlar is synthesized from the monomers 1,4-phenyl-diamine (para-phenylenediamine) and terephthaloyl chloride. The result is a liquid-crystalline behaviour and mechanical drawing causing the polymer chains to orientate in the direction of the fibre.\n\nKevlar has a high price, in part, due to the difficulties arising from the use of concentrated sulfuric acid in its manufacture. These harsh conditions are needed to keep the highly insoluble polymer in solution during synthesis and spinning.\n\nFibers of Kevlar consist of long molecular chains produced from poly-paraphenylene terephthalamide. There are many inter-chain bonds making the material extremely strong. Kevlar derives a portion of its improved strength from inter-molecular hydrogen bonds formed between the carbonyl groups and protons on neighboring polymer chains and the partial pi stacking of the benzenoid aromatic stacking interactions between stacked strands. These interactions have a greater influence on Kevlar than van der Waals interactions and chain length that typically influence the properties of other synthetic polymers and fibers like Dyneema. The presence of salts and certain other impurities, especially calcium, could interfere with the strand interactions and caution is used to avoid inclusion in its production. Kevlar's structure consists of relatively rigid molecules, which tend to form mostly planar sheet-like structures that have similarities to silk protein.
1140159
Not sure.  I shoot a couple of long bows that were hand made by my grandfather.  Also have a re-curve, but no compounds.\nSorry, this hardly answers your question.\nGood luck.
640615
Well depending on your application for it, there can be different pros and cons. But generally PDC has alright impact properties, not the best out there by far. Has good hardness. You can find these properties on matweb: http://www.matweb.com/search/SpecificMaterial.asp?bassnum=PMO861\nas well at Basell's website:\nhttp://www.basell.com/portal/site/basell/index.jsp?epi-content=GENERIC&range2_from=&grade=1287&brochure_start_doc=0&epi_menuItemID=483732eb145b68bdf5305285a0f034a0&displayproperty03=&displayproperty02=&range3_from=&region=0&displayproperty01=&staticcontent_title_sort_order=&searchType=ProductGradeSearch&resin=0&pressrelease_start_doc=0&brochure_title_sort_order=&displaycategory03=id1&displaycategory02=id2&displaycategory01=id0&staticcontent_start_doc=0&range1_to=&viewID=single_product_grade&VCMChannelID=9039ea2b61a89f00vcm100000000c53f3cc3____&range2_to=&pressrelease_title_sort_order=&range3_to=&range1_from=&productgrade_start_doc=0&product_name=aa54563d2f437010VgnVCM100000646f3c14RCRD&beanID=936658885\nas for price, I'm not 100% sure, but I'd say a safe bet is less than $1/lb.
775136
when ever two dissimilar metals are joined  they produce a specific millivoltage at each degree of temperature\nif you graft the changes you will find a bell curve \nunique to each type \nthis is how you determine which is proper one for your use\ntype K alumel and cromel  is used at medium temperature ranges 90 to 1600 degrees F
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Carpet is formed from nylon and polypropylene.  The polypropylene depending on its isomeric state (isotactic, syntactic, etc.) and its chain length will have different thermal properties, thus a low or high softening temperature.
182388
fibers are pieces of substance....for instance nylon is made from chemicals and spun to create a long fillament of fiber (a single strand).  fabric is made from strands of fibers woven together.
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SPECTRA® Double Braided\n\nOne of the most popular high performance lines, G-Force is a double braided rope consisting of 100% polyester braided cover and a 100% Allied Signal's Spectra® braided core. It was engineered for General Marine, Industrial, and Commercial Fishing applications where extra low elongation and extremely high strength-to-weight ratio of Spectra® are required. Spectra® double braided rope often replaces wire of the same diameter. Great for Merchant Marine, Industrial, Commercial Fishing, and Recreational Boating applications. \n\nThis rope offers extremely high strength and low stretch, and is one of the toughest lines around. The HMPE minor tendency to creep is minimized with advanced core design, and this rope is much more tolerant of standard size sheaves than an aramid (e.g. Kevlar®, Twaron®) rope. Because the specific gravity of Spectra® is less than 1.0, size-for-size G-Force is one of the lighter ropes around. Downsize and your weight savings is twofold. This is one tough rope, built to withstand mistrals and gale force winds! The cover is a dazzling tri-color weave, a base color combined with two separate multi-tracers running in opposite directions.
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There are all kinds of different materials lumped under the generic heading of "plastics".  The variations run into hundreds, perhaps even thousands of compounds!\n\nFor example, there's nylon.  The most familiar form, nylon 66, is a copolymer of adipic acid or adipoyl chloride and hexamethylene diamine.  But I can substitue various hydrocarbon chains in those two components to make nylon 55, nylon 65, nylon 48, nylon 83, etc.\n\nThen there are the families of polyaramid polymers, and polyester polymers, and polycarbonates, and . . . .\n\nNobody will ever be able to give you an exhaustive list here.  Try looking up some books on polymer chemistry at your library.
926602
There are a couple of different fibers being used.\n\nKevlar by DuPont, Spectra by Honeywell, Aramid by Aramid and various combinations of the fibers woven together to form hybrid weaves.
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You might be refering to this:\n\nhttp://textileinfo.com/en/tech/imada/kennrou/page08.html\n\nMore on the subject can be found with a web search.
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This question has very little available on the Internet about it. This is the closest thing I could find: \n\nTends machine that forms (twists) rope-fiber yarn into strands preparatory to being laid into rope: Installs specified size tubes that gather and compress yarn preparatory to twisting.
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hi!\nGo through these links. hope you will get useful information\n\nhttp://composite.about.com/od/books/\nhttp://composite.about.com/od/referencematerials/l/aa040797.htm\nhttp://composite.about.com/library/weekly/aa051297.htm
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The yarn count expresses the thickness of the yarn, and must be known before calculating the quantity of yarns for a known length of fabric. The yarn count number indicates the length of yarn in relation to the weight.\nThree systems of yarn count are currently in use: the fixedweight; the fixed length and the Tex systems. The foxed weight can be used with British and American weights and systems. The fixed length system and the Tex system are based on metric weights and measures. Tex is an internationally agreed system of yarn numbering that applies to all types of yarns, regardless of the method of production.\n \n    A textile softener is a chemical or chemical mixture, intended to give fabric a soft hand. Softeners act primarily as lubricants for fibers, allowing them to slide over each other more easily, giving a softer feel. Some also help reduce static electric charge build up and some are anti-microbial. Many softeners are surfactants and they may be Cationic, Anionic or non-ionic. Household laundry softeners are often based on Cationic Surfactants. Softeners can interfere with dyeing, so they should be removed by scouring. Some, such as Silicones, can be quite difficult to remove.\n\n          Cationic Softener\n  Americos Catasilk\nAmericos Catasilk based on cationic, with blend of composite Silicone, prepared for various textiles such as cotton, polyester, denim and their blends. It imparts cotton garment excellent limpy, softening and brilliant look.\nAmericos Catasilk is a versatile pre-treatment formulation that ensures 100 percent hassle-free processing for cellulosic fabrics and garments that require an enhanced bio-polishing effect, softness and hand feel. Americos Catasilk makes a garment shine.\nThe product is designed in such a way that it remains in contact with the bath liquor for a very limited period. Thus, it not only saves the process time and other resources but also make sure that there is a negligible color loss.\nApplication Procedure\nLoad water 1-3-5 Kg (WOF)\nAdd Americos Catasilk 0.2-0.4% (WOF)\nRaise temperature 50°C\nLoad-soak garments (Inside out) 5 minutes\nRun machine 15 minutes\nDrop bath liquor  \nRinse with fresh water  \nDrop \n\n                Non-ionic\nKenensoft is an excellent softener, cold water rapid soluble for cotton, T/C knitting blend fabrics, and for resin processing industry. It has a very good hand feeling and anti-static properties. Because of its low-yellowing specific character, it is very suitable for blue and white jeans laundry or stone-wash processing. It provides body to garment / fabric.\n\nCharacteristics\nAppearance: Off white\nIonic: Non-ionic\npH (2% SOL): 6.7 to 7\nContent: Peg with Stearic Acid\nSolubility: Soluble in cold water\n\nAdvantages\n    * Provides fabric/garment with body\n    * Provides silky like handling when used on synthetics\n    * Does not yellow when treated fibers are heated\n    * Does not influence dye fastness\n    * Dissolves rapidly in cold water if its solution is very soluble.\n    * Does not irritate human skin.\n    * Suitable for cheese dyeing process.\nHow to use (making KENENSOFT NON -IONIC SOFTENER)\n1. Adjust solution to 10% active contents; put 10Kg Non-Ionic into water at more than 25° °C about 30 - 60 min, and mix until completely dissolved.\n2. After completely dissolved, please filter before packing.\n3. Using quantity suggestion: based on 20% solution 2% O.W.F.