FATIGUE CRAZE INITIATION IN POLYCARBONATE - STUDY BY TRANSMISSION ELECTRON-MICROSCOPY

被引：19

作者：

HRISTOV, HA

YEE, AF

GIDLEY, DW

机构：

[1] UNIV MICHIGAN,DEPT MAT SCI & ENGN,ANN ARBOR,MI 48109

[2] UNIV MICHIGAN,DEPT PHYS,ANN ARBOR,MI 48109

来源：

POLYMER | 1994年 / 35卷 / 17期

关键词：

FATIGUE; CRAZE INITIATION; POLYCARBONATE;

D O I：

10.1016/0032-3861(94)90535-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Fatigue craze initiation in bulk, amorphous polycarbonate (PC) is investigated by means of transmission electron microscopy. The results agree very well with small angle X-ray scattering measurements of the same set of samples, and confirm that void generation is the main characteristic of the initiation process. The evolution of the initial void-like structures or 'protocrazes' with dimensions of approximately 50 nm into crazes with dimensions of several micrometres is presented in considerable detail. It is found that some similarities exist between crazes induced by cyclic fatigue at room temperature and crazes produced in monotonic loading at temperatures close to the glass transition. The similarties suggest that disentanglement of polymer chains plays an important role in the fatigue craze initiation process in bulk, amorphous PC near room temperature.

引用

页码：3604 / 3611

页数：8

共 35 条

[1]

Argon A. S., 1990, CRAZING POLYM, V91, P301, DOI DOI 10.1007/BFB0018024

[2] INITIATION OF CRAZES IN POLYSTYRENE [J].

ARGON, AS ;

HANNOOSH, JG .

PHILOSOPHICAL MAGAZINE, 1977, 36 (05) :1195-1216

[3] ROLE OF HETEROGENEITIES IN CRAZING OF GLASSY POLYMERS [J].

ARGON, AS .

PURE AND APPLIED CHEMISTRY, 1975, 43 (1-2) :247-272

[4] PHYSICAL BASIS OF DISTORTIONAL AND DILATIONAL PLASTIC-FLOW IN GLASSY POLYMERS [J].

ARGON, AS .

JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS, 1973, B 8 (3-4) :573-596

[5]

ARGON AS, 1983, ADV POLYM SCI, V52-3, P275

[6]

Brown H, 1987, MATER SCI REP, V2, P317

[7]

BROWN HR, 1985, J POLYM SCI PP, V25, P1765

[8]

BUBECK RA, 1991, J MATER SCI, V26, P6249, DOI 10.1007/BF02387801

[9]

DOLL W, 1983, ADV POLYM SCI, V52-3, P105

[10]

DOLL W, 1989, FRACTOGRAPHY FAILURE, P387

← 1 2 3 4 →