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Search Results for Acrylonitrile-butadiene-styrene
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Book Chapter
Inclusion within an Acrylonitrile-Butadiene-Styrene Handle
Available to PurchaseSeries: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0090430
EISBN: 978-1-62708-222-8
... source was an undispersed gel particle formed during the production of the molding resin. Chemical analysis Handles Inclusions Injection moldings Molding resins Polybutadiene acrylonitrile-butadiene-styrene (Other, general, or unspecified) processing-related failures The handle from...
Abstract
The handle from a consumer product exhibited an apparent surface defect. The handle had been injection molded from a medium viscosity grade ABS resin. The anomalous appearance was objectionable to the assembler of the final product and resulted in a production lot being placed on quality-control hold. Investigation included visual inspection, 24x micrographs, and FTIR in the reflectance mode. The spectrum obtained on the included material was characteristic of polybutadiene, the rubber-modifying agent present in ABS. This supported the conclusion that the inclusion's most likely source was an undispersed gel particle formed during the production of the molding resin.
Book Chapter
Cracking of Acrylonitrile-Butadiene-Styrene Protective Covers
Available to PurchaseSeries: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0090445
EISBN: 978-1-62708-222-8
... identified, but a likely source appeared to be the use of improper regrind. Contaminants Electric appliances Embrittlement Housings Molding resins Protective covers Stress cracking Thermal analysis Acrylonitrile-butadiene-styrene Brittle fracture Numerous protective covers, used...
Abstract
Numerous protective covers, used in conjunction with an electrical appliance, failed during assembly with the mating components. The failures were traced to a particular production lot of the covers and occurred during insertion of the screws into the corresponding bosses. The parts had been injection molded from an ABS resin to which regrind was routinely added. Inspection of both the failed covers and retained parts, which exhibited normal behavior during assembly, included visual inspection, micro-FTIR in the ATR mode, and analysis using DSC. The FTIR results indicated the presence of contaminant material exclusively within the ABS resin used to mold the failed covers, and the thermograms suggested contamination with a PBT resin. Further TGA analysis showed the contamination was estimated to account for approximately 23% of the failed cover material. The conclusion was that the appliance covers failed via brittle fracture associated with stress overload. The failures, which occurred under normal assembly conditions, were attributed to embrittlement of the molded parts, due to contamination of the ABS resin with a high level of PBT. The source of the PBT resin was not positively identified, but a likely source appeared to be the use of improper regrind.
Book Chapter
Chemical Attack of Acrylonitrile-Butadiene-Styrene Grips
Available to PurchaseSeries: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0090427
EISBN: 978-1-62708-222-8
... attack Embrittlement Feedstock Glycerides Grips Injection moldings Acrylonitrile-butadiene-styrene Brittle fracture Environmental cracking (plastics) A set of plastic grips from an electric consumer product failed while in service. The grips had been injection molded from a general-purpose...
Abstract
A set of plastic grips from an electric consumer product failed while in service. The grips had been injection molded from a general-purpose grade of ABS resin. The parts had cracked while in use after apparent embrittlement of the material. Investigation (visual inspection, SEM imaging, and micro-FTIR in the ATR mode) showed that the spectrum representing the grip surface contained absorption bands associated with ABS as well as additional bands of significant intensity. A spectral subtraction removed the bands associated with the ABS resin resulting in a very good match with glyceride derivatives of fats and oils. This supported the conclusion that the grips failed via brittle fracture associated with severe chemical attack of the ABS resin. A significant level of glyceride derivatives of fatty acids, known to degrade ABS resins, was found on the part surface.
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Parabolic markings on acrylonitrile-butadiene-styrene fracture surface. 12....
Available to PurchasePublished: 01 January 2002
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Surface microcracking network developed on acrylonitrile-butadiene-styrene ...
Available to PurchasePublished: 15 May 2022
Fig. 9 Surface microcracking network developed on acrylonitrile-butadiene-styrene material due to ultraviolet exposure. Courtesy of Engineering Systems, Inc.
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Parabolic markings on acrylonitrile-butadiene-styrene fracture surface. 12....
Available to PurchasePublished: 15 May 2022
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SEM fractographs of an injection-molded acrylonitrile-butadiene-styrene spe...
Available to PurchasePublished: 15 May 2022
Fig. 35 SEM fractographs of an injection-molded acrylonitrile-butadiene-styrene specimen fractured by impact at ambient temperatures, illustrating parabolas of various shapes. (a) U-shaped parabola. Original magnification: 1000×. (b) Petal-shaped parabola. Original magnification: 1000×. (c) U
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SEM fractographs from an acrylonitrile-butadiene-styrene sheet fractured by...
Available to PurchasePublished: 15 May 2022
Fig. 36 SEM fractographs from an acrylonitrile-butadiene-styrene sheet fractured by impact at ambient temperatures, illustrating parabolas of various shapes. (a) Deep U-shaped parabola. Original magnification: 1000×. (b) Deep U-shaped parabolas. Original magnification: 1000×. (c) Various
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SEM fractographs from an acrylonitrile-butadiene-styrene sheet fractured by...
Available to PurchasePublished: 15 May 2022
Fig. 37 SEM fractographs from an acrylonitrile-butadiene-styrene sheet fractured by slow bending at ambient temperature, with deep U-shaped parabolas. (a) Original magnification: 100×. (b) Original magnification: 500×. (c) Original magnification: 1000×. (d) Original magnification: 3500×
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Hysteresis loops after various cycles in acrylonitrile-butadiene-styrene te...
Available to PurchasePublished: 15 May 2022
Fig. 4 Hysteresis loops after various cycles in acrylonitrile-butadiene-styrene tested at stress amplitude (σ a ) = 25.4 MPa (3.68 ksi) and in high-impact polystyrene tested at σ a = 11.6 MPa (1.68 ksi)
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Published: 15 May 2022
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Tear versus punched-hole fracture of acrylonitrile-butadiene-styrene at 8 k...
Available to Purchase
in Physical, Chemical, and Thermal Analysis of Thermoplastic Resins
> Characterization and Failure Analysis of Plastics
Published: 15 May 2022
Fig. 23 Tear versus punched-hole fracture of acrylonitrile-butadiene-styrene at 8 km/h (5 miles/h), 25 °C (77 °F). Source: Ref 30
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Dynamic temperature ramp of ABS (acrylonitrile butadiene styrene) in torsio...
Available to PurchasePublished: 15 May 2022
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Characterization of a flame retardant in acrylonitrile-butadiene-styrene (A...
Available to PurchasePublished: 15 May 2022
Fig. 16 Characterization of a flame retardant in acrylonitrile-butadiene-styrene (ABS). (a) Fourier transform infrared analysis of a polymer with a flame retardant. (b) Gas chromatography/mass spectrometry analysis of a polymer extract. RT, retention time
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Drop test evaluating an acrylonitrile-butadiene-styrene 3D-printed prototyp...
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in Avoiding Plastic Product Failure by Proper Plastic Selection and Design
> Characterization and Failure Analysis of Plastics
Published: 15 May 2022
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001767
EISBN: 978-1-62708-241-9
... Abstract Six transformer brackets failed in service, sending a group of three pole-mounted transformers to the ground below. The brackets were made from acrylonitrile-butadiene-styrene (ABS) resin and had been in service for more than 30 years. Remnants of the fractured brackets were analyzed...
Abstract
Six transformer brackets failed in service, sending a group of three pole-mounted transformers to the ground below. The brackets were made from acrylonitrile-butadiene-styrene (ABS) resin and had been in service for more than 30 years. Remnants of the fractured brackets were analyzed using optical and scanning electron microscopy, Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). The exterior surfaces of all six brackets were alike and shared similar features, including witness marks, discoloration, mechanical deformation, and secondary cracking, along with crack networks. Both FTIR and TGA analyses indicated that the surface material was in a highly degraded state, likely due to weathering and thermal and ultraviolet exposure. This, in turn, led to the formation of cracks that propagated under the cyclic forces of vibration and wind. As the cracks grew larger, the weight of the transformer eventually overloaded the brackets, resulting in failure.
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Thermomechanical analysis (TMA) properties of commercial polymers. PSU, pol...
Available to PurchasePublished: 15 May 2022
Fig. 28 Thermomechanical analysis (TMA) properties of commercial polymers. PSU, polysulfone; PPO, polyphenylene oxide; PVC, polyvinyl chloride; PTFE, polytetrafluoroethylene; PS-BD, polystyrene-butadiene; PMMA, polymethyl methacrylate; PS, polystyrene; PC, polycarbonate; ABS, acrylonitrile
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Properties of commercial polymers according to thermomechanical analysis. P...
Available to PurchasePublished: 15 May 2022
Fig. 19 Properties of commercial polymers according to thermomechanical analysis. PS, polystyrene; PPO, polyphenylene oxide; PSU, polysulfone; ABS, acrylonitrile-butadiene-styrene; PC, polycarbonate; PVC, polyvinyl chloride; PMMA, polymethyl methacrylate; PE, polyethylene; PS-BD, polystyrene
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Notched impact strength versus flexural modulus of acrylonitrile-butadiene-...
Available to Purchase
in Function and Properties Factors in Plastics Processing Selection
> Characterization and Failure Analysis of Plastics
Published: 15 May 2022
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Comparison of the cyclic and monotonic stress-strain curves for several pol...
Available to PurchasePublished: 15 May 2022
Fig. 12 Comparison of the cyclic and monotonic stress-strain curves for several polymers, including nylon, polycarbonate, polypropylene, and acrylonitrile-butadiene-styrene (ABS)
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