High-Modulus wholly aromatic Fibers
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High-Modulus wholly aromatic Fibers by Symposium on High-Modulus Wholly Aromatic Fibers (1972 Boston)

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Published by Dekker .
Written in English

Book details:

Edition Notes

Statemented. by W.B. Black and J. Preston.
ContributionsBlack, W. Bruce., Preston, Jack, 1931-, American Chemical Society.
The Physical Object
Number of Pages372
ID Numbers
Open LibraryOL20234520M

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Fibers were produced from a series of such polymers containing from 50 mole % meta-oriented phenylene rings to mole % para-oriented ones. Fiber from the wholly para-oriented type of polymer exhibited very high strength and modulus: and g/den, respectively, at % by: These fibers were then chemically converted to polyimides by immersing them in an acetic anhydride-pyridine mixture and heat-drawn. Relatively lower crystalline polyimides such as polypyromellitimides of aromatic diamines bearing chlorine substituent on the nuclei or random copolyimides had better drawability and gave fibers having higher tensile strength than higher crystalline by: 5. Wholly aromatic polyesterimide fibers were prepared from rigid aromatic diamines and 4, 4′- (arylene-dioxydicarbonyl) diphthalic anhydride by wet-spinning the N-methylpyrrolidone solutions of their precursor poly- (amic acids) and then imidizing the fibers general, higher crystalline polymers gave fibers having higher initial modulus (M i), but lower tenacity (T) than lower. The IM6 carbon fibers and the IM6/Avimid-N composite are subjected to isothermal heating at selected temperatures up to C. Thermal oxidation of the IM6 fibers is characterize y determining: (1) continuous weight loss, and (2) change of fiber surface morphology, during isothermal heating histories.

High-Modulus Wholly Aromatic Fibers. I. Wholly Ordered Polyamide-Hydrazides and Poly-1,3,4-oxadiazole—Amides. High-Modulus Wholly Aromatic Fibers: Introduction to the Symposium and Historical Perspective. Journal of Macromolecular Science: Part A - Chemistry , 7 (1), DOI: / Colin Clark-Monks, Bryan Ellis. The fibers also exhibit particularly good resistance to organic solvents. High performance wholly aromatic polyamide fibers are provided possessing a novel chemical by: Blends of wool with high performance fibers is studied in order to investigate possible synergistic effect. Blends of wool with PBO do not enhance the FR performance of wool.

A manufactured high-modulus fibre made from a long-chain synthetic aromatic polyamide in which at least 85% of the amide linkages join two aromatic rings. Axial compression fatigue The tendency of a fibre to fail when it is subjected to cyclic loading which exertsFile Size: KB. Poly-p-phenylenebenzobisoxazole (PBO) is one of the rigid-rod polymers, the fiber of which shows high modulus and high strength.   High-strength and high-modulus fibers Super fiber History Liquid crystalline Aramid fiber Polyarylate fiber Ultrahigh molecular weight polyethylene fiber Gel spinning This is a preview of subscription content, log in to check by: 2. High-modulus low-shrinkage PET fibers are used in passenger car tires, mooring ropes, and other large-scale industrial end uses, with strength of 8–9 g per denier and elongations of 10–20% [1]. There are also specialty polyester fibers, such as polyethylene naphthalate, polybutylene terephthalate, by: 2.