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sheet molding compounds

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003035
EISBN: 978-1-62708-200-6
... Abstract Sheet molding compounds (SMCs) refers to both material and process for producing glass-fiber-reinforced polyester resin items. This article discusses the material components incorporated into the resin paste for desirable processing and molding characteristics and optimum physical...
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Published: 01 December 2004
Fig. 1 Composite cross sections. (a) Sheet molding compound made from carbon-black-filled epoxy resin and chopped glass fiber. Bright-field illumination, 65 mm macrophotograph montage. (b) Quasi-isotropic unidirectional prepreg laminate. Slightly uncrossed polarized light, 5× objective More
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Published: 01 January 2001
Fig. 1 Sheet molding compound processing machine More
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Published: 01 November 1995
Fig. 1 Sheet molding compound processing machine More
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Published: 01 November 1995
Fig. 2 Sheet molding compound paste thickening curve More
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Published: 01 November 1995
Fig. 3 Continuous sheet molding compound paste mixing system More
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Published: 01 January 2001
Fig. 5 Cure of sheet molding compound in shear sandwich mode. Cross-linking reaction indicated by sharp increase in shear modulus. Frequency: 1 Hz; amplitude: 20 μm More
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Published: 01 January 2001
Fig. 2 Sheet molding compound and prepreg production versus total reinforced plastics production in the United States More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003019
EISBN: 978-1-62708-200-6
... Abstract The compression molding process is most commonly called the sheet molding compound (SMC) process in reference to the precursor sheet molding compound material it uses. This article discusses the types of materials used for sheet manufacture, and describes the manufacturing...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003370
EISBN: 978-1-62708-195-5
... of sheet molding compounds (SMC). The three types of resin paste mixing techniques, such as batch, batch/continuous, and continuous, for an SMC operation are reviewed. The article discusses the design features and functional operations of the two types of SMC machines, namely, continuous-belt and beltless...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003415
EISBN: 978-1-62708-195-5
... materials, namely, glass-fiber-mat-reinforced thermoplastics, long-fiber-reinforced thermoplastics, and sheet molding compounds. The article also presents information on the application examples and market volume of compression molding. compression molding automotive composite applications composite...
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Published: 01 January 2001
Fig. 1 Production volume and relative part performance that can be achieved with various production techniques. SMC, sheet molding compounds; GMT, glass mat thermoplastics; RTM, resin transfer molding; SRIM, structural reaction injection molding; P/T, pressure/temperature More
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Published: 01 November 1995
Fig. 5 Paste metering blade setting versus resin paste weight for typical sheet molding compound More
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
... stereolithography VHP vacuum hot pressing identical with SLS selective laser sintering VLS vapor-liquid-solid greater than SM standard modulus Vm volume fraction of matrix k much greater than SMC sheet molding compound VOC volatile organic compound greater than or equal to SMC-C sheet molding compound...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006945
EISBN: 978-1-62708-395-9
... polyethylene heat-de ection temperature high-impact polystyrene high-strength sheet molding compound high-performance liquid chromatography high-pressure polyethylene high-speed liquid chromatography International Electrotechnical Commission butyl rubber (or isobutylene-isoprene rubber) infrared; synthetic...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006935
EISBN: 978-1-62708-395-9
... for such processes as resin transfer molding and pultrusion, in which the resin must flow through preplaced glass reinforcements. For other processes, such as extra-high-strength molding compound and prepreg compression molding, the resin must be thickened by reaction to stay on the glass reinforcements. With sheet...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003474
EISBN: 978-1-62708-195-5
... Airplane parts, surfboards Hand lay-ups 40 60 Strand mat Polyester Boat hulls Spray-up 30 70 Random chopped Polyester, others Fast, fumes RTM and SRIM 20–50 50–80 Fiber preforms Polyester, others Low pressure, tooling issue Compression molding (sheet molding compound) 20–50 50...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003366
EISBN: 978-1-62708-195-5
... or durability ( Ref 5 ). Phenolic Sheet Molding Compounds The use of phenolics for sheet molding compounds (SMC) has been researched since the 1980s ( Ref 33 ). The technology challenge was to match resin viscosity, handling, and cure properties of the polyester SMC to avoid any special processing...
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
... molding compound (BMC) or sheet molding compound (SMC). Bulk molding compound is a prepared mixture of thermosetting resin, chopper fibers (glass, carbon, or aramid, with lengths ranging from 3 to 50 mm, or 1 8 to 2 in.), filler, catalyst, and other additives. It is supplied in bulk form...
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
... such as preimpregnated fabrics and tapes, sheet-molding compounds, and bulk- molding compounds may be assembled prior to the manufacturing process. Handling Qualities The ability of the preimpregnated (“prepreg”) material to stick to itself and other materials is called tack . A tacky material will stay in place...