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Fiberglass cloth 2X2 twill weave 9 oz/sq/yd hexcel 7725


What is for sale: Fiberglass cloth 2X2 twill weave 9 oz/sq/yd hexcel 7725
8.8 Ounce Per Square Yard Fiberglass Fabric
(3 Feet Long By 38 Inches Wide)
Type of Yarns Warp Yarn: ECG 75 1/0 EC9 68
Fill Yarn: ECH 25 1/0 EC11 204
Fabric Weight, Dry 8.80 oz/yd2 298 g/m2
Nominal Construction Warp Count: 54/in 21.3/cm
Fabric Thickness 9.3 mils 0.24 mm
Yarn Breaking Strength Warp 300 lbf/in 263 daN/5cm
Filling 300 lbf/in 263 daN/5cm
For multiple yard purchase, request for an invoice or total before paying and
Also available in full rolls at wholesale pricing
Please inquire and we will list the full roll price and availability.
The minimum cut length is 1 yard or
3 feet length by 38 inches wide
(folded and packaged in sealed bag)
Cut lengths greater than 10 yards will be supplied rolled on cardboard core
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.
Aircraft Advanced Composites, Marine and Boat Building, General Composites
Composite Fabricating Basics Step One: Choose the best fabric to use for the application.
In this most simple weave pattern, warp and fill yarns are interlaced over and under each other in alternating fashion. The plain weave provides good stability, porosity and the least yarn slippage for a given yarn count.
The mock leno weave is used where relatively low numbers of yarns are involved. The leno weave locks the yarns in place by crossing two or more warp threads over each other and interlacing with one or more filling threads.
The four harness satin weave is more pliable than the plain weave and is easier to conform to curved surfaces typical in reinforced plastics. In this weave pattern there is a three by one interfacing where a filling yarn floats over three warp yarns and under one.
The eight harness satin is similar to the four harness satin except that one filling yarn floats over seven warp yarns and under one. This is a very pliable weave and is used for forming over curved surfaces.
This twill weave is more pliable than the plain weave and has better drapability while maintaining more fabric stability than a four or eight harness satin weave. The weave pattern is characterized by a diagonal rib created by one warp yarn floating over at least two filling yarns.
Chrome Finishes (Volan A) F-16 & F-3
Heat cleaned fabric is saturated in a methacrylate chromic chloride solution, cured, and washed to remove any soluble salts. Both F-16 and F-3 are Volan type finishes with F-3 being a high chrome content version. Used with polyesters, phenolics, and epoxies, F-16 and F-3 fabrics make a light green laminate.
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 Lay-Up 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 and impliments needed are ready and within reach
Mix the proper amount of resin needed and be accurate proportioning the resin and curing agent. Adding more curing agent than the recommended mix ratio will not promote a faster cure.
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 maintain a minimum of 30 to 35% resin content by weight, this is the optimum ratio used in high performance prepreg (or pre-impregnated fabrics) typically used in aerospace and high performance structural application.
Place the entire precut fiberglass to be used on a scale and determine the weight.
Typical fabric weights regardless of weave pattern
1 yard of 8 OSY fabric at 38 inches wide weighs 224 grams
1 yard of 10 OSY fabric at 38 inches wide weighs 280 grams
Ounces per square yard or OSY is also know as aerial weight which is the most common unit of measurement for composite fabrics.
If a scale is available, measuring by weight will insure better composite
fabrication and repeatability, rather than using OSY data.
To determine how much resin is needed to adequately impregnate the fiberglass, use the following equation:
(Total Weight of Fabric divided by 60%) X( 40%)= weight of mixed resin needed
(224 grams of dry fiberglass / 60%) X 40% = 149.3 grams of resin needed
So for every square yard of 8 ounce fabric, you will need 4.50 fluid ounces of mixed resin.
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
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 disperse through out the fiberglass with minimal mechanical agitation or spreading.
Air voids or porosity within the laminate is typically where failure propagates when load is applied(fracturing, compression failure, tearing, tourque, tensile stength, creep) .
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
Proper and thorough mixing of the epoxy resin and curing agent and with equal importance is to achieve 100% polymerization . Most binay or 2 part epoxy resins system undergoes 3 distinct stages to achieve full cure.
The ideal cure condition of most room temperature epoxy resin is 22 to 27 degrees Celsius at 20% relative humidity.
Higher ambient curing temperatures will promote faster polymerization and less cure time.
Improving mechnical performance via post heat cure
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 when over exposed to high temperature (>250 F).
MAX CLR-HP is resistant to amine blush but curing any epoxy resin at high humdity will create amine blush.
Do not mix the resin when the ambient humdity is above 60%
The affinity of an amine compound (curing agent) to moisture and carbon dioxide
creates carbonate compound and forms what is called amine blush.
Amine blush is a wax-like layer that forms as most epoxies cure
If the epoxy system is cured in extreme humidity (>70%),
it will be seen as a white and waxy layer that must be removed by
physical sanding of the surface followed by an acetone wipe.
Amine blush is due to moisture as well as the amount of carbon dioxide
present during the curing process.
Most heat cured resin will fall into two catagories of heat curing.
USE Our MAX CLR HP With This Fabric for best Results
PolymerProducts, The Epoxy Experts
For All Your Composite Fabric Needs
We Have Just Acquired Thousands Of Yards
· Aluminum and Phenolic Honeycomb Cores
Factory woven by one of the largest weavers and producers of composite fabrics for aerospace, marine, electronic and structural composite materials.
CLICK ON THE PICTURE TO PAUSE SLIDE SHOW
Other Fabric Weave Types And Finishing Available
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)
TEMPORARY PERSONALIZED EMAIL: eloise-hobbs@desmoines-classifieds.com (Eloise Hobbs)
Contact eloise-hobbs@desmoines-classifieds.com (Eloise Hobbs) for more information. Your emails will be instantly forwarded to the poster's private address.

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Fiberglass cloth 2X2 twill weave 9 oz/sq/yd hexcel 7725