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vacuum-assisted resin transfer molding

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Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003398
EISBN: 978-1-62708-195-5
... the resin selection in designing the composite for use in a particular application. The article illustrates the various methods that are used to process a composite component, namely, wet lay-up, autoclave, resin transfer molding, and vacuum-assisted resin transfer molding. It provides a discussion...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009071
EISBN: 978-1-62708-177-1
... transfer molding, vacuum-assisted resin transfer molding, and resin film infusion. It explains the composite- and matrix-toughening methods for fiber-reinforced composites, such as dispersed-phase toughening and interlayer toughening. The article concludes with information on optical microscopy, which...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003413
EISBN: 978-1-62708-195-5
... applications vacuum-assisted resin injection vacuum infusion resin-film infusion injection-compression molding RESIN TRANSFER MOLDING (RTM) and structural reaction injection molding (SRIM) belong to a family, sometimes denoted liquid composite molding. The common feature is the injection of a liquid...
Book Chapter

By Greg Kress
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003392
EISBN: 978-1-62708-195-5
... methods: Wet lay-up, prepreg lay-up, fiber placement, tape lay-up, pultrusion, resin transfer molding (RTM), vacuum- assisted resin transfer molding, filament winding, compression molding, injection molding, centrifugal casting Processing equipment: Vacuum bagging, molds, ovens, autoclaves, presses...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0005754
EISBN: 978-1-62708-195-5
... W, w psi UV ultraviolet direction of reaction X, x omega VARI vacuum-assisted resin injection VARTM vacuum-assisted resin transfer mold- ing v viscosity; void ...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003431
EISBN: 978-1-62708-195-5
... affordability, out-of-autoclave curing has become a common goal. Processes such as vacuum-assisted resin transfer molding, resin transfer molding, electron beam curing, room- temperature curing, oven curing, and resin-fiber infusion are being adopted to meet the new affordability objectives. The tooling...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003414
EISBN: 978-1-62708-195-5
... Abstract Vacuum infusion is a resin injection technique derived from resin transfer molding. This article discusses the characteristics of the technique and its applications. It presents the theory and background of the technique and provides an illustration of how parts are made. The article...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003432
EISBN: 978-1-62708-195-5
... to document the presence of each ingredient and to ensure that the proper chemical reaction state has been obtained. These resins can be used to make preimpregnated reinforcing fibers (prepreg) or to infiltrate a fiber preform via resin transfer molding, vacuum assisted resin transfer molding, or resin film...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003395
EISBN: 978-1-62708-195-5
... processes, vacuum-assisted resin- transfer molding (VARTM), or structural reaction injection molding (SRIM), when used with preforms, can result in reduced handling time of the resin. The dry reinforcement is placed in the desired orientation, and then the resin is introduced. The ability of the resin...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003018
EISBN: 978-1-62708-200-6
..., and air is blown up through the base plate channel, causing the sheet to billow upward. The plug assist pushes the sheet into the cavity, and vacuum is applied to transfer the sheet from the plug to the mold surface. Fig. 5 Pressure bubble plug-assist vacuum thermoforming. (a) Air blown through...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003020
EISBN: 978-1-62708-200-6
... beyond standard metal-to-metal seals. Precision-ground metal-to-metal shutoffs may be adequate, but in some cases O-rings will be needed to contain resin. Other Similar Processes A common process sometimes referred to as resin transfer molding is the vacuum-assisted resin injection process...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
..., and apply a vacuum after mixing Pour the material slowly into the mold Use pressure casting Products not hardened enough This could occur because the material is not cured enough due to moisture in the resin, improper resin composition, or lower curing temperature or time. Ensure the resin...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.9781627083959
EISBN: 978-1-62708-395-9
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.9781627081955
EISBN: 978-1-62708-195-5
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002465
EISBN: 978-1-62708-194-8
... pattern lay-up is resin transfer molded with resin or carbon CVD densification that is carbonized/graphitized and repeat cycled to the density goal. Alternatively, a fiber preform is placed in a closed chamber and vacuum-pressure resin impregnated, cured, carbonized three to eight times...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003487
EISBN: 978-1-62708-195-5
... and improved composed principally of polymeric esters, in antistatic agents. Agents that, when added to a removal of volatiles from the resin. Lay-up is which the recurring ester groups are an inte- molding material or applied to the surface of usually vacuum bagged with a bleeder and re- gral part of the main...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002492
EISBN: 978-1-62708-194-8
...-catalyzed resin is pumped in until the mold is filled and the pressure reaches about 170 kPa (25 psi). The process can be vacuum assisted (VARTM) to prevent trapped air pockets and to assist with the flow of resin. The curing time is a function of the resin and can vary from about 15 min to on the order...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003367
EISBN: 978-1-62708-195-5
..., adhesive systems, and syntactic core materials. They can be consolidated using autoclave, vacuum bag, press, pultrusion, RTM, Seemans composite resin injection molding process, or vacuum-assisted resin transfer molding methods. Curing of CE resins and prepregs is generally performed at elevated...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003404
EISBN: 978-1-62708-195-5
... shell, mounting the shell to a support structure, and adding heating/ cooling lines, vacuum systems, and ejectors (if required) than machining a mold. It is possible using an electroformed mold to produce parts having a variety of contours at the pressures typically used in most molding processes...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003407
EISBN: 978-1-62708-195-5
... systems with some form of vacuum- assisted consolidation to reduce resin content. Sandwich construction is also widespread. Nevertheless, the design engineer needs to be aware of the fiber content the boat-building yard is capable of achieving with their processes. For a cross-ply, unidirectional glass...