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Fabric Weight 9 ounce per square yard (8.95 oz/yd2 or 303 g/m2) Is one of the most widely used weave style used in the composites industry.This style fabric is one of the easiest fabrics to use and it is ideal for laying up cowls, fuselages, ducts and other contoured surfaces with minimal distortions. Note how the fabric can be folded without separation or weave distortion. Volan Finished cloths exhibits faster and complete wet out with most thermoset resins for less air bubble entrapment and porosity. Cured laminates tend to dent rather than crack making it an ideal fabric for high impact applications. Use this fiberglass cloth when high strength parts are desired and where curved and contoured parts are to be produced. It is ideal for structural construction, composites reinforcement, mold making, aircraft and auto parts tooling, marine and other composite lightweight applications. Volan is also known as Chrome Finish due to presence of chromium applied to glass fibers . The Volan sizing or finish is applied to fiberglass fabric during the manufacturing process to give good bonding to epoxy, vinyl ester and polyester resins. If used with clear resins, volan cloth will appear to have a slight greenish tint. STYLE 7781-60 US System SI Units Type of Yarns Warp Yarn: ECDE 75 1/0 EC6 66 Fabric Weight, Dry 8.95 oz/yd2 303 g/m2 Nominal Construction Warp Count Aircraft Advanced Composites, Marine and Boat Building, General Composites Click on the picture to pause or play slide show Wood for kayak reinforcing using MAX CLR-HP with 7781 Fiberglass MAX CLR HP used for this construction For multiple yard purchase, request for an invoice and The minimum cut length is 1 yard or 3 feet lenght by 60 inches wide (folded and packaged in sealed bag) Cut lenght greater than 10 yards will be supplied rolled on cardboard core For Laminating or Reinforcing with Fiber Fabric Materials. MAX BOND LV A/B works well as a laminating resin for composite fabrics such as canvas, fiberglass, carbon fiber, Aramid fiber and other hybrid and synthetic fabrics. Apply a thin layer of the mixed MAXBOND LV A/B unto the pre-cleaned substrate to be reinforced. Apply a layer of fiberglass and aide the resin to wet-out the fiberglass using a brush and apply subsequent layers of fabric sandwiching a layer of resin until the desire thickness is achieved. Use a rubber squeegee to remove excess resin. Allow curing for 24 hours. If using a vacuum bag technique or a platen press, please review our “Lay-up sequence for bagging operations†bulletin. MAX BOND LOW VISCOSITY FOR MARINE APPLICATIONS MAX GPE FOR GENERAL CONSTRUCTION LOW COST APPLICATIONS MAX CLR HP CRYSTAL CLEAR HIGH PERFORMANCE APPLICATION Step Three: Proper Fiberglass, Carbon Fiber, Kevlar And Other Composite Fabric Technique Pre-lay-up notes * Lay out the fabric and precut to size and set aside * Avoid distorting the weave pattern as much as possible * For fiberglass molding, insure the mold is clean and adequate mold release is used * View our video presentation above "MAX EPOXY RESIN MIXING TECHNIQUE" * Mix the resin only when all needed materials needed are ready and within reach Mix the proper amount of resin needed Over saturation or starving the fiberglass or any composite fabric will yield poor mechanical performance. Don't how much resin to use to go with the fiberglass? A good rule of thumb is to calculate 65% fiberglass to 35% resin by weight, this is the optimum ratio used in high performance prepreg (short for pre-impregnated fabrics) typically used for aerospace and high performance structural application. If a scale is available, measuring by weight will insure better composite fabrication and repeatability . Place all the precut fiberglass to be used on a scale and determine the weight. (FW) 1 yard of 8 ounce fabric at 38 inches wide weighs 224 grams 1 yard of 10 ounce fabric at 38 inches wide weighs 280 grams (ounces per square yard also know as aerial weight which is the most common unit of measurement for composite fabrics) To determine how much resin is needed to adequately impregnate the fiberglass, use the following equation: (Total Weight of Fabric used divided by 60%) and then multiply it by 40% = weight of mixed resin needed (224 grams of dry fiberglass / 60%) X 40% = 149.3 grams of resin needed for 1 square yard of 8 ounce fiberglass Common Factors Of 100% Solids (Zero volatiles and unfilled epoxy resin) 1 gallon of resin = 4239 grams (1.12 g/cc) 1 fluid ounce of resin = 33.17 grams So for every square yard of 8 ounce fabric, you will need 4.50 fluid ounces of mixed resin Apply the mixed resin unto the surface and then lay the fabric and allow the resin to saturate the fabric.NOT THE OTHER WAY AROUND This is one of the most common processing error that yields sub-standard laminates.By laying the fiberglass unto a film of resin, less air bubbles are entrapped during the wetting-out stage. Air is pushed up and outwards instead of forcing the resin through the fabric which will entrap air bubbles This technique will displace air unhindered and uniformly through the fiberglass with minimal mechanical agitation or spreading. Given enough time and the proper selection of the fabric's surface treatment, most dry fabric will equalize the distribution of the applied resin naturally thus creating less air bubbles to be entrapped within the laminant. It is then very important that the proper viscosity, working time and surface treatment of the fabric must considered. There are also fabricating techniques that can be employed to reduce air entrapment within the laminante matrix. Dependig on thr size of the part processes such as high pressure pressing, vacuum bagging or autoclaving are proven methods. Air voids or porosity within the laminate is typically where failure (fracturing, compression failure, tearing, tourque, tensile stength, creep) propagates when load is applied. Note the slide show presentation Typical Fiberglassing ReinforcingTechnique Unto A Wood Substrate CARBON FIBER FLAT PANEL PRODUCTION PLACE CURSOR ON THE PICTURE TO PAUSE AND PLAY SLIDE SHOW Step Four: Proper Curing Room Temperature Cured Epoxy Resins Proper and thorough mixing of the epoxy resin and curing agent is to achieve the optimum mechanical property of any epoxy resin. Please view our "Epoxy Mixing Technique" video presentation above for more information. Adding more curing agent more than the recommended mix ratio will not promote a faster cure. Improving performance via post heat cure Typically a short heat post cure will further improve the mechanical performance of most epoxy resins. In general room temperature cured epoxy resin has a maximum operating temperature of 250°F AND 160°F under stress or load. Some darkening or yellowing of the epoxy resin may occur over heat cured. We are direct manufacture and formulators of high performance polymers for the industry for over 15 years. We have hundreds of large corporations that use our polymers in thousands of applications. Please inquiry for volume discount. If you have any questions or special applications, our staff polymer chemist will be more than happy to answer your questions. For our complete listing, please click the logo OUR PHOTO SHARING SITE CAN BE VIEWED AT: Hundreds of posted pictures from many other applications with our MAX EPOXY SYSTEM (We do not proofread any ads submitted by members) |
Alisha-goodman@desmoines-classifieds.com (Alisha Goodman) for more information. Your emails will be instantly forwarded to the poster's private address.
