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Relevant bibliographies by topics / LaRC polyimide

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Academic literature on the topic 'LaRC polyimide'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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Journal articles on the topic "LaRC polyimide"

1

Cano, Roberto J., Tan H. Hou, Erik S. Weiser, and Terry L. St Clair. "Polyimide Composites from ‘Salt-Like’ Solution Precursors." High Performance Polymers 13, no. 4 (2001): 235–50. http://dx.doi.org/10.1088/0954-0083/13/4/302.

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Four NASA Langley-developed polyimide matrix resins, LaRC™-IA, LaRC™-IAX, LaRC™-8515 and LaRC™-PETI-5, were produced via a ‘salt-like’ process developed by Unitika Ltd. The salt-like solutions (65% solids in NMP) were prepregged onto Hexcel IM7 carbon fibre using the NASA LaRC™ multipurpose tape machine. Process parameters were determined and composite panels fabricated. The temperature dependent volatile depletion rates, the thermal crystallization behaviour and the resin rheology were characterized. Composite moulding cycles were developed which consistently yielded well consolidated, void-f

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2

Bryant, Robert G. "LaRC ™-SI: A Soluble Aromatic Polyimide." High Performance Polymers 8, no. 4 (1996): 607–15. http://dx.doi.org/10.1088/0954-0083/8/4/009.

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LaRC™-SI (NASA Langley Research Center-Soluble poly Imide) is a wholly aromatic, high-performance thermoplastic with a unique combination of physical, mechanical and adhesive properties. LaRC™-SI is synthesized from equimolar amounts of the dianhydrides 4, 4′-oxydiphthalic anhydride (ODPA) and 3, 3′, 4, 4′-biphenyltetracarboxylic dianhydride (BPDA); 3, 4′-oxydianiline (3, 4′-ODA) and phthalic anhydride (PA) as an endcapping reagent. The most unique property of LaRC™-SI is its initial solubility in conventional high-boiling aprotic solvents. However, when exposed to temperatures above its softe

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3

Hou, T. H., and T. L. St Clair. "IM7/LARC™-IAX-3 Polyimide Composites." High Performance Polymers 10, no. 2 (1998): 193–206. http://dx.doi.org/10.1088/0954-0083/10/2/004.

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LARC™-IAX-3 (Langley Research Center™-improved adhesive experimental resin-3) aromatic polyimide, based on oxydiphthalic anhydride, 3,′4-oxydianiline (3,′4-ODA) and 1,4-phenylenediamine ( p-PDA), was evaluated as a matrix for high-performance composites. Four poly(amide acid) solutions in either N-methypyrrolidone or γ-butyrolactone, end-capped with phthalic anhydride to various theoretical molecular weights, were synthesized. Unidirectional prepreg was fabricated from each of the four resins utilizing NASA-Langley’s multipurpose prepreg machine. The temperature-dependent volatile depletion ra

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4

Hou, T. H., R. J. Cano, and B. J. Jensen. "IM7/LARC™ MPEI-1 Polyimide Composites." High Performance Polymers 10, no. 2 (1998): 181–92. http://dx.doi.org/10.1088/0954-0083/10/2/003.

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LARC™ MPEI-1 (Langley Research Center™ modified phenylethynyl imide-1) phenylethynyl containing aromatic polyimide, is based on the reaction of biphenyl dianhydride (BPDA), 3,4′-oxydianiline (3,4′-ODA), 1,3-bis(3-aminophenoxy)benzene (APB), 2,4,6-triaminopyrimidine (TAP) and 4-phenylethynyl phthalic anhydride (PEPA), presumably resulting in a mixture of linear, branched and star shaped phenylethynyl containing imides which was evaluated as a matrix for high-performance composites. The poly(amid acid) solution of MPEI-1 in N-methypyrrolidinone was synthesized at 35% and 42% solids. Unidirection

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5

Hou, T. H., and R. G. Bryant. "Processing and Properties of IM7/LARC™ -Si Polyimide Composites." High Performance Polymers 9, no. 4 (1997): 437–48. http://dx.doi.org/10.1088/0954-0083/9/4/007.

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LARC™-SI (NASA Langley Research Center-Soluble Imide) is an aromatic thermoplastic polyimide. LARC™-SI is synthesized from equimolar amounts of oxydiphthalic anhydride (ODPA), 3, 3′, 4, 4′-biphenyltetracarboxylic dianhydride (BPDA) and the equivalent amount of 3, 4′-oxydianiline (3, 4′-ODA). Phthalic anhydride (PA) was used as an endcapper to control molecular weight. A 30% solid LARC™-SI solution (in NMP/Xylene: 9/1 v/v) with 3% stoichiometric imbalance was made into unidirectional long-fibre-reinforced prepregs. Thermal properties, volatile depletion behaviour and resin rheology were thoroug

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6

Hawkins, Brian P., Jeffrey A. Hinkley, Ruth H. Pater, and Joanne Moore. "Stretch-orientation of LaRC™ RP50 Polyimide Film." High Performance Polymers 18, no. 4 (2006): 469–78. http://dx.doi.org/10.1177/0954008306066334.

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7

Teverovsky, Justyna B., David C. Rich, Yoshihiko Aihara, and Peggy Cebe. "Effect of zone annealing on LARC-CPI thermoplastic polyimide." Journal of Applied Polymer Science 54, no. 4 (1994): 497–505. http://dx.doi.org/10.1002/app.1994.070540410.

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8

Hou, T. H., S. P. Wilkinson, N. J. Johnston, R. H. Pater, and T. L. Schneiderk. "Processing and Properties of IM7/LARC ™ -RP46 Polyimide Composites." High Performance Polymers 8, no. 4 (1996): 491–505. http://dx.doi.org/10.1088/0954-0083/8/4/002.

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LARC™-RP46 resin system is a PMR type polyimide and is prepared by replacing methylenedianiline in the PMR-15 composition with 3,4′-oxydianiline. This resin system retains the same processing characteristics as PMR-15 but also offers enhanced fracture toughness. Rheological measurements were conducted on pre-imidized LARC™-RP46 moulding powder subjected to various ramp and hold temperature schemes. Adequate flow properties were found with theoretical (formulated) molecular weight 6 ≤1500 g mol−1. Critical transition temperatures for optimizing the process cycle were identified. They included t

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9

Peterside, David T., Joseph E. Palaia, Andrew C. Schuerger, Melanie J. Correll, and Ray A. Bucklin. "Testing of Greenhouse Cladding Materials for Space Environments, Part 2: Laminates." Applied Engineering in Agriculture 34, no. 3 (2018): 575–80. http://dx.doi.org/10.13031/aea.12465.

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Abstract. Plants grown in greenhouse-type structures are potential sources of food, oxygen, clean water, fiber, and other resources needed for bioregenerative life support systems during long-term space missions. Identification of cladding materials with appropriate optical and physical properties that can withstand the high ultraviolet radiation, low pressure, and low temperature Martian environment is necessary for greenhouse design. The objective of this study was to evaluate the effects of simulated Mars environmental conditions on yield strength and light transmissivity of composites comp

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10

Brillhart, Mark V., Yao-Yi Cheng, Pradnya Nagarkar, and Peggy Cebe. "Molecular modelling and structure studies of LARC-CPI semicrystalline polyimide." Polymer 38, no. 12 (1997): 3059–68. http://dx.doi.org/10.1016/s0032-3861(96)00817-8.

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Dissertations / Theses on the topic "LaRC polyimide"

1

Brandom, Donald Keith. "Crystallization and melting behavior of an aromatic semicrystalline polyimide, LaRC CPI-2." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-10032007-171904/.

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2

Dorsey, Kyra. "Formation, morphology, and properties of oriented LaRC-IA filaments." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/10948.

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3

Muellerleile, Joan Thérèse Polesnak. "Crystallization behavior and morphological features of two LARC polyimides and local orientation studies of two semicrystalline model composites." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/39082.

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Results are presented for two unrelated studies. The primary topic involved the crystallization behavior and morphological features of two polyimides, namely LARCCPI (Langley Research .Center Crystalline folyimide) and LARC-TPI (Thermoplastic folyimide). The LARC-CPI study first considered feature~ affecting crystallization behavior including inherent viscosity, crystallization temperature, and melt temperature and time. Data were analyzed using the A vrami analysis. Morphological features were investigated using techniques including scanning electron microscopy (SEM), transmission electron mi

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4

Li, Kuo-An. "Modeling Time-dependent Responses of Piezoelectric Fiber Composite." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7437.

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The existence of polymer constituent in piezoelectric fiber composites (PFCs) could lead to significant viscoelastic behaviors, affecting overall performance of PFCs. High mechanical and electrical stimuli often generate significant amount of heat, increasing temperatures of the PFCs. At elevated temperatures, most materials, especially polymers show pronounced time-dependent behaviors. Predicting time-dependent responses of the PFCs becomes important to improve reliability in using PFCs. We study overall performance of PFCs having unidirectional piezoceramic fibers, such as PZT fibers, disper

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Books on the topic "LaRC polyimide"

1

Nelson, James B. Effect of long-term thermal aging on coated celion/LARC-160 composites. National Aeronautics and Space Administration, Langley Research Center, 1987.

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2

L, St Clair Terry, and Langley Research Center, eds. LARC-IA: A flexible backbone polyimide. National Aeronautics and Space Administration, Langley Research Center, 1990.

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3

L, St Clair Terry, and Langley Research Center, eds. LARC-IA: A flexible backbone polyimide. National Aeronautics and Space Administration, Langley Research Center, 1990.

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4

L, St Clair Terry, and Langley Research Center, eds. LARC-IA: A flexible backbone polyimide. National Aeronautics and Space Administration, Langley Research Center, 1990.

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5

Center, Langley Research, ed. Development of LaRC [superscript TM] - IA thermoplastic polyimide coated aerospace wiring. National Aeronautics and Space Administration, Langley Research Center, 1995.

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6

Center, Langley Research, ed. Development of LaRC [superscript TM] - IA thermoplastic polyimide coated aerospace wiring. National Aeronautics and Space Administration, Langley Research Center, 1995.

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7

Center, Langley Research, ed. Processing and properties of fiber reinforced polymeric matrix composites: I.IM7/LARC(TM)-PETI-7 polyimide composites. National Aeronautics and Space Administration, Langley Research Center, 1995.

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8

Center, Langley Research, ed. Effect of long-term thermal aging on coated celion/LARC-160 composites. National Aeronautics and Space Administration, Langley Research Center, 1987.

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9

Center, Langley Research, ed. Effect of long-term thermal aging on coated celion/LARC-160 composites. National Aeronautics and Space Administration, Langley Research Center, 1987.

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10

An improved compression molding technology for continuous fiber reinforced composite laminate: Part 1: AS-4/LaRC-TPI 1500 (HFG) prepreg system. National Aeronautics and Space Administration, Langley Research Center, 1991.

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Book chapters on the topic "LaRC polyimide"

1

Yost, William T., John H. Cantrell, Thomas S. Gates, and Karen S. Whitley. "Effects of Molecular Weight on Mechanical Properties of the Polyimide Larc-SI™." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5339-7_182.

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Conference papers on the topic "LaRC polyimide"

1

Holloway, Nancy M., Kevin N. Barnes, Gregory K. Draughon, and Lisa A. Scott. "Fabrication of adhesiveless lightweight flexible circuits using Langley Research Center soluble-imide "LaRC-SI" polyimide film." In SPIE's 9th Annual International Symposium on Smart Structures and Materials, edited by Anna-Maria R. McGowan. SPIE, 2002. http://dx.doi.org/10.1117/12.475076.

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2

Gierow, Paul, and William Clayton. "Inflatable concentrators utilizing NASA LARC polyimides." In Space Programs and Technologies Conference. American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-3797.

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3

Morris, Senan, Anupam R. Chandran, Nick Timmons, and Jim Morrison. "The fabrication and analysis of a polyimide based loop antenna for 2.45GHz WBAN applications." In 2016 Loughborough Antennas & Propagation Conference (LAPC). IEEE, 2016. http://dx.doi.org/10.1109/lapc.2016.7807510.

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