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High-strength, high-modulus fibers from hydrazide polymers and copolymers

✍ Scribed by Frank Dobinson; C. A. Pelezo; W. B. Black; K. R. Lea; J. H. Saunders


Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
351 KB
Volume
23
Category
Article
ISSN
0021-8995

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πŸ“œ SIMILAR VOLUMES


High-strength/high-modulus fibers of p-p
✍ Hartwig C. Bach; Frank Dobinson; K. R. Lea; J. H. Saunders πŸ“‚ Article πŸ“… 1979 πŸ› John Wiley and Sons 🌐 English βš– 389 KB

## Abstract __p__‐Phenylene oxadiazole/N‐methyl hydrazide copolymers were prepared by polymerization of terephthalic acid, dimethyl terephthalate, and hydrazine sulfate in fuming sulfuric acid, and coagulation of the polymer was obtained in aqueous sulfuric acid. Fibers spun from these copolymers h

122. Large diameter high strength, high
✍ C.M Krutchen; D.G Flom; B Gorowitz; B.W Roberts πŸ“‚ Article πŸ“… 1973 πŸ› Elsevier Science 🌐 English βš– 106 KB

A carbon ribbon has been produced from a polyimide film whose microstructure can be varied by the degree of restraint or stretch during pyrolysis. The microstructure was varied from a coarse lamellar structure to a welldefined lamellar structure typical of a highly ordered graphite. Increasing the d

134. Characterization of high modulus an
✍ M Yamamoto; S Yamada πŸ“‚ Article πŸ“… 1969 πŸ› Elsevier Science 🌐 English βš– 112 KB

are considerably under-estimated. This difficulty must be understood before defect structure calculations can be carried out adequately for graphite. The Morse potential yields a much larger anharmonic coefficient than is deduced from thermal expansion measurements.

Preparation of high-strength/high-modulu
✍ R. D. Gilbert; Xuechao Hu; R. E. Fornes πŸ“‚ Article πŸ“… 1995 πŸ› John Wiley and Sons 🌐 English βš– 445 KB πŸ‘ 2 views

Cellulose triacetate (CTA) fibers were spun from a 35% (w/v) solution of CTA (molecular weight, 95,000) in trifluoroacetic acid (TFA)/CH2CL2 (60/40, v/v) using laboratory-scale spinning equipment, an air gap, and cold MeOH as the coagulant. The resulting fibers, of large diameter (ca. 80 pm) were sa