When to use Nextel™ 720 Industrial Fibers & Nextel™ 720 Composite Fibers
3M™ Nextel™ Fabric 720, composed of 85% alumina and 15% silica, offers the lowest creep of any Nextel™ Fiber at temperatures up to 2102°F (1150°C). This makes the fiber or fabric suited for load bearing ceramic matrix composites used in industrial, aerospace and automotive applications.
When selecting the fiber type for a particular application, it is important to consider all these factors. Other factors, such as corrosion, chemical resistance, or atmospheric conditions may influence the final selection.
3M™ Nextel™ 720 Ceramic Fiber Typical Properties
3M™ Nextel™ Roving 720 – Typical Properties
Note: All yields are based upon sized rovings and yarns. The allowable range in add-ons for sizing is 1.1 to 3.0% by weight. The allowable tolerance on final twist is ± 30%.
3M™ Nextel™ 720 Roving Strength – Maximum Temperature Limit
* Strain rate = 12.5 mm/min
Fiber Weight Loss Nextel™ 720 Ceramic Fiber Roving
Roving samples were subjected to 2192°F (1200°C) for fifteen hours. Fibers were weighed before and after the fifteen hour exposure in order to determine weight loss. The fiber evolves B2O3 at temperatures greater than 2012°F (1100°C).
Shrinkage on Nextel™ 720 Fiber
Roving samples were held at each temperature for fifteen hours. After that time they were measured for shrinkage. All fiber compositions showed less than three percent shrinkage after fifteen hours at 2372ýF (1300ýC). Nextel™ 720 Fiber compositions showed shrinkage of less than 1.5% at these conditions.
Nextel™ Ceramic Fiber 720 Moisture Absorption
The 3M™ Nextel™ Ceramic Fibers 720 absorb very little moisture due to their smooth, non-porous surface. Fibers exposed to 100% relative humidity for several hours at room temperature had 0.08% weight gain.
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Further information on 3M™ Nextel™ 720 Ceramic Textiles
Further information on other 3M™ Nextel™ Ceramic Textiles
Thermostatic Industries, Inc, 9654 Hermosa Ave., Rancho Cucamonga, CA. 91730
Offices Located in the Los Angeles, California Area - Stock Textiles & Custom Fabricated Textiles Delivered Globally.
Phone (800) 345-4217 or (323) 277-0900 (International) • Fax (800) 710-0270 or (323) 277-0909 (International)