Process for manufacturing a high modulus poly-p-phenylene tereph

Details Process for manufacturing a high modulus poly-p-phenylene tereph Process for manufacturing a high modulus poly-p-phenylene tereph

1987-04-27

1989-11-28

Lorin, Hubert

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264234, 264235, 2642905, 264345, 264346, D01D 1002

Patent

active

048836346

ABSTRACT:
High modulus, high tenacity fibers of poly-p-phenylene terephthalamide (PPD-T) are manufactured comprising a fiber heat treating process for increasing the inherent viscosity and the crystallinity index of the PPD-T. Never-dried fibers swollen with water of controlled acidity are heated beyond dryness in an atmoshphere having a flow of greater than Reynolds Number 10,000 throughout the duration of the heating.

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Journal of East China Institute of Textile Science and Technology, vol. 10, No. 2, (1984), pp. 30-34.

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