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prepreg tape

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Published: 01 November 2010
Fig. 2.24 Unidirectional prepreg tape, towpreg, and broadgoods (unidirectional tape and woven cloth). Source: The Boeing Company More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860035
EISBN: 978-1-62708-338-6
... of programming various geometries using advanced software tools and discusses how various materials, such as rovings, tow-preg, prepreg tape, and woven materials, affect winding program generation. computer numerical controlled winding machines computer-aided manufacturing filament winding prepreg tape...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870031
EISBN: 978-1-62708-314-0
... winding. Tape —A composite product form in which a large number of parallel filaments (such as tows) are held together with an organic matrix material (such as epoxy) commonly referred to as prepreg (preimpregnated with resin). The length of the tape in the direction of the fibers is much greater...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870119
EISBN: 978-1-62708-314-0
...-intensive method, but it may be the most economical if the number of parts to be built is limited, the part size is small, or the part configuration is too complex to automate. 5.2.1 Manual Lay-Up Manual hand collation is conducted using either prepreg tape (24 in. (0.6 m) maximum width...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870489
EISBN: 978-1-62708-314-0
... by the material supplier. Prepreg rovings and tapes are usually used in automated processes (for example, filament winding and automated tape laying); unidirectional tape and prepreg fabrics are used for hand lay-up. Unidirectional prepreg tapes offer improved structural properties compared to woven prepregs...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030147
EISBN: 978-1-62708-349-2
... ( Ref 8 ). Furthermore, many prepreg-matrix formulations rapidly absorb moisture from ambient humidity during lay-up. Therefore, it is frequently observed that more voids are found in parts that require longer lay-up times. Many studies have found that absorbed water is the main factor in void...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
..., knitting, carding, and felting. Yarns and rovings are used in the filament winding, prepreg tape, and pultrusion processes. Applications include missile cases, pressure vessels, sporting goods, cables, and tension members. Although continuous filament forms dominate composite applications, discontinuous...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870183
EISBN: 978-1-62708-314-0
... a function of the product form used. For example, well-consolidated hot melt–impregnated tape can be successfully consolidated in very short times (minutes if not seconds), while woven powder coated or comingled prepregs require longer times for the resin to flow and impregnate the fibers. Occasionally...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030001
EISBN: 978-1-62708-349-2
... of prepreg materials, automated tape lay-up of prepreg materials, resin transfer molding, vacuum-assisted resin transfer molding, resin film infusion, wet lay-up, filament winding, pultrusion, and compression molding of sheet molding or bulk molding compound. While these processes are general in description...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.9781627083492
EISBN: 978-1-62708-349-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780383
EISBN: 978-1-62708-281-5
... (polystyrene or polypropylene are common), glass containers, and even plain white typing paper are all acceptable ways of storing or shipping samples that will later be analyzed by one or more surface analysis methods. If tape must be used to secure samples during shipping, avoid using tapes that are laden...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870517
EISBN: 978-1-62708-314-0
... concern with wet lay-up patches is that it may be difficult or impossible to match the strength and stiffness of the original structure if the structure is thin and made from unidirectional tape, since the wet lay-up material will be woven cloth. Both prepreg and wet lay-up patches have the advantage...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870201
EISBN: 978-1-62708-314-0
... content prepreg or prebled to remove resin and compact the lay-up if the material is an excess resin content prepreg. These two factors, namely, large and heavy matched metal dies with slow heat-up rates and compacted net resin content plies that have been advanced during the hot debulking or prebleeding...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870063
EISBN: 978-1-62708-314-0
...), methyl methacrylate (improved weatherability), and diallyl phtalate, which has low viscosity and is often used for prepregs. The properties of the resultant polyester are strongly dependent on the crosslinking or curing agent used. One of the main advantages of polyesters is that they can be formulated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540319
EISBN: 978-1-62708-309-6
... in various forms; the most common is the 76 to 1219 mm (3 to 48 in.) wide unidirectional tape, with a thickness slightly greater than the fiber diameter. The fibers are placed parallel to one another, and closely spaced. The prepreg (preimpregnated) tapes can be stored in a refrigerator for future use...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870373
EISBN: 978-1-62708-314-0
... conventional textile operations, such as twisting, weaving, knitting, carding, and felting. Yarns and rovings are used in filament-winding, prepreg tape, and pultrusion processes. Applications include missile cases, pressure vessels, sporting goods, cables, and tension members. Although continuous-filament...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860095
EISBN: 978-1-62708-338-6
... for aircraft designers, B-basis allowables, that are provided for unidirectional or woven prepreg laminates which are hand or automatically laid up and cured and compacted in an autoclave, but these data are not generally available for the filament-wound component, even in MIL-HDBK-17C ( Ref 8.8 ) or from...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870573
EISBN: 978-1-62708-314-0
... to provide environmental protection layers in the presence of in-service-generated matrix cracks. Fig. 21.5 Interfacial coating 21.4 Fiber Architectures Fiber architecture is similar to that used for polymer matrix composites. Either unidirectional or woven cloth can be prepregged...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.9781627083386
EISBN: 978-1-62708-338-6
Book Chapter

By M. B. Kasen
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860413
EISBN: 978-1-62708-348-5
...-pressure requirement permits in situ fabrication of completed parts from the basic composite components: For example, structures may be built up by filament winding or from an intermediate product called a prepreg . The latter is a tape containing the fiber and a partially cured (B-staged) polymer–resin...