Preparation and Properties of High-Strenght and High-Modulus Aramid Fibers Having High Hydrolytic Stability at High Temperature

Takuma Jinda; Hajime Kimura

doi:10.2115/fiber.51.2_100

Takuma Jinda, Hajime Kimura

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JOURNAL FREE ACCESS

1995 Volume 51 Issue 2 Pages 100-103

DOI https://doi.org/10.2115/fiber.51.2_100

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Published: February 10, 1995 Received: September 12, 1994 Available on J-STAGE: June 30, 2008 Accepted: September 12, 1994 Advance online publication: - Revised: -
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Date of correction: June 30, 2008 Reason for correction: - Correction: ABSTRACT Details: Wrong : In order to obtain high-strength and high-modulus aramid fibers which are hydrolytically stable at high temperatures and can be applicable to cement reinforcement by autoclave curing, disubstituted benzidines (60-40 mole%) such as 2, 2′-dimethylbenzidine (2, 2′-Di-Me-Bz) and 1, 4-bis(ρ-aminophenoxy) benzene (BAP) (40-60 mole%) were copolymerized with terephthaloyl chloride. The resultant polymer solutions were wet-spun and hot-drawn.
The fibers obtained had good mechanical properties and high hydrolytic stability at high temperatures. A typical example was as follows: the fiber from 2, 2′-Di-Me-Bz/BAP(60/40) terephthalamide had tenacity of 22g/d and initial modulus of 700 g/d and retained 84-92% of tenacity after hydrolysis in aqueous alkaline solution (pH 13.6) for 6 hr at 180°C.
Right : In order to obtain high-strength and high-modulus aramid fibers which are hydrolytically stable at high temperatures and can be applicable to cement reinforcement by autoclave curing, disubstituted benzidines (60-40 mole%) such as 2, 2'-dimethylbenzidine (2, 2'-Di-Me-Bz) and 1, 4-bis(ρ-aminophenoxy) benzene (BAP) (40-60 mole%) were copolymerized with terephthaloyl chloride. The resultant polymer solutions were wet-spun and hot-drawn.
The fibers obtained had good mechanical properties and high hydrolytic stability at high temperatures. A typical example was as follows: the fiber from 2, 2'-Di-Me-Bz/BAP(60/40) terephthalamide had tenacity of 22g/d and initial modulus of 700 g/d and retained 84-92% of tenacity after hydrolysis in aqueous alkaline solution (pH 13.6) for 6 hr at 180°C.

Date of correction: June 30, 2008 Reason for correction: - Correction: PDF FILE Details: -

Abstract

In order to obtain high-strength and high-modulus aramid fibers which are hydrolytically stable at high temperatures and can be applicable to cement reinforcement by autoclave curing, disubstituted benzidines (60-40 mole%) such as 2, 2'-dimethylbenzidine (2, 2'-Di-Me-Bz) and 1, 4-bis(ρ-aminophenoxy) benzene (BAP) (40-60 mole%) were copolymerized with terephthaloyl chloride. The resultant polymer solutions were wet-spun and hot-drawn.
The fibers obtained had good mechanical properties and high hydrolytic stability at high temperatures. A typical example was as follows: the fiber from 2, 2'-Di-Me-Bz/BAP(60/40) terephthalamide had tenacity of 22g/d and initial modulus of 700 g/d and retained 84-92% of tenacity after hydrolysis in aqueous alkaline solution (pH 13.6) for 6 hr at 180°C.

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