Add to ORKGChemistry and processing modifications of the poly(Diels Alder) polyimide (PDA) resin were performed to obtain structural composites suitable for 589 K (600 F) service. This work demonstrated that the PDA resin formulation is suitable for service at 589 K (600 F) for up to 125 hours when used in combination with Hercules HTS graphite fiber. Sandwich panels were autoclave molded using PDA/HTS skins and polyimide/glass honeycomb core. Excellent adhesion between honeycomb core and the facing skins was demonstrated. Fabrication ease was demonstrated by autoclave molding three-quarter scale YF-12 wing panels
Statistically significant quantitative structural imperfection measurements were made on samples fro...
Crosslinked polyimide-poly(alkylene oxide) copolymers capable of holding large volumes of liquid whi...
Various topics relating to composite structural materials for use in aircraft structures are discuss...
The use of difluoromaleimide-capped prepolymers to provide improved moisture resistant polymers was ...
Work performed in the last three phases of the program included: (1) face sheet processing; (2) hone...
A series of tests was performed to determine an optimum resin to be used as a UV rigidizable matrix ...
Subsequent to the design review, a series of tests was conducted on simulated modules to demonstrate...
A hyperpure vitreous silica material is being developed for use as a reflective and ablative heat sh...
The large size and the requirement for precise lightening cavities in a considerable portion of the ...
Mechanical properties of neat resin samples and graphite fiber reinforced samples of thermoplastic r...
Thirty-seven cured phenolic resin compositions were prepared and tested for their ability to provide...
Thermal, optical, structural, and electrical isolation analyses are decribed. Major factors in the d...
Progress in the development of processes for production of Celion/LARC-160 graphite-polyimide materi...
Progress from October 1, 1977, through December 31, 1977, is reported in the design of the 50 MT/yea...
Significant accomplishments include development of a procedure to correct for the substantial differ...
Statistically significant quantitative structural imperfection measurements were made on samples fro...
Crosslinked polyimide-poly(alkylene oxide) copolymers capable of holding large volumes of liquid whi...
Various topics relating to composite structural materials for use in aircraft structures are discuss...
The use of difluoromaleimide-capped prepolymers to provide improved moisture resistant polymers was ...
Work performed in the last three phases of the program included: (1) face sheet processing; (2) hone...
A series of tests was performed to determine an optimum resin to be used as a UV rigidizable matrix ...
Subsequent to the design review, a series of tests was conducted on simulated modules to demonstrate...
A hyperpure vitreous silica material is being developed for use as a reflective and ablative heat sh...
The large size and the requirement for precise lightening cavities in a considerable portion of the ...
Mechanical properties of neat resin samples and graphite fiber reinforced samples of thermoplastic r...
Thirty-seven cured phenolic resin compositions were prepared and tested for their ability to provide...
Thermal, optical, structural, and electrical isolation analyses are decribed. Major factors in the d...
Progress in the development of processes for production of Celion/LARC-160 graphite-polyimide materi...
Progress from October 1, 1977, through December 31, 1977, is reported in the design of the 50 MT/yea...
Significant accomplishments include development of a procedure to correct for the substantial differ...
Statistically significant quantitative structural imperfection measurements were made on samples fro...
Crosslinked polyimide-poly(alkylene oxide) copolymers capable of holding large volumes of liquid whi...
Various topics relating to composite structural materials for use in aircraft structures are discuss...