CREEP OF AROMATIC POLYAMIDE FIBERS

被引：50

作者：

ERICKSEN, RH

机构：

[1] Sandia Natl Lab, Albuquerque, NM,, USA, Sandia Natl Lab, Albuquerque, NM, USA

来源：

POLYMER | 1985年 / 26卷 / 05期

关键词：

The interest in synthetic aromatic polyamides (aramids) has increased with the commercial availability of the high-strength; high-modulus fibre Kevlar. Symposia reports and reviews1 -t 5 now summarize a large number of papers in the literature concerning Kevlar and related fibres. Because of its unique combination of physical and mechanical properties Kevlar has found many applications in textiles and in reinforced composites. In many cases the high strength and high modulus of Kevlar are primary factors which dictate its use. Studies have been reported concerning stress-strain; fatigue; compressive and other strength-related properties 16-26. In particular; the work of Northolt and van Aartsen 27; and Northolt 2a on the deformation mechanism of poly(p-phenylene terephthalamide); PPTA; fibres has provided a basis for understanding the mechanism of aromatic fibre deformation. It has been reported that the fibres are essentially 100~o crystalline 9. Northolt 2a has shown that the stress-strain curve for PPTA fibres is a result of elastic strain and irreversible rotation of the crystallites. In the case of time-dependent deformation; the stress-rupture of Kevlar strands and composites has been investigated29-a t but relatively little information is available concerning Kevlar fibre creep. Room temperature creep curves for Kevlar strands are reported in Dupont's Kevlar Data Manual 32. Bunsell x 8 has described a creep curve for a single Kevlar 49 fibre at 85~o of the fibre breaking load; and some room temperature creep data for single fibres were reported as part of an earlier study of the creep of Kevlar/epoxy composites 33. These data indicate that Kevlar fibres exhibit more creep than other com- * This work performeda t Sandia National Laboratories supported by the US Departmenr of Energy under contract DE-AC04-DP00789;

D O I：

10.1016/0032-3861(85)90111-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

引用

页码：733 / 746

页数：14

共 77 条

[1] MACROSTRUCTURE AND MECHANICAL-BEHAVIOR OF FIBERS OF POLY-P-PHENYLENE BENZO-BIS-THIAZOLE [J].

ALLEN, SR ;

FILIPPOV, AG ;

FARRIS, RJ ;

THOMAS, EL .

JOURNAL OF APPLIED POLYMER SCIENCE, 1981, 26 (01) :291-301

[2]

ARAGON AS, 1968, J APPL PHYS, V39, P4080

[3] CREEP AND STRAIN RECOVERY IN HOT-PRESSED SILICON-NITRIDE [J].

ARONS, RM ;

TIEN, JK .

JOURNAL OF MATERIALS SCIENCE, 1980, 15 (08) :2046-2058

[4]

AVAKIAN P, 1980, POLYM PREPR, V21

[5]

BALLOU JW, 1978, POLYM PREPRINTS, V17, P1

[6]

BERRY GC, 1978, J POLYM SCI, V65, P222

[7] HIGH-MODULUS WHOLLY AROMATIC FIBERS - INTRODUCTION TO SYMPOSIUM AND HISTORICAL PERSPECTIVE [J].

BLACK, WB .

JOURNAL OF MACROMOLECULAR SCIENCE-CHEMISTRY, 1973, A 7 (01) :3-41

[8] HIGH MODULUS HIGH-STRENGTH ORGANIC FIBERS [J].

BLACK, WB .

ANNUAL REVIEW OF MATERIALS SCIENCE, 1980, 10 :311-362

[9]

BLACK WB, 1979, FLOW INDUCED CRYSTAL, P245

[10]

BLACK WB, 1973, HIGH MODULUS WHOLLY

← 1 2 3 4 5 6 7 8 →