GAS PERMEATION AND VISCOELASTIC DEFORMATION OF PREPREGS IN COMPOSITE MANUFACTURING PROCESSES

被引：14

作者：

NAM, JD

SEFERIS, JC

KIM, SW

LEE, KJ

机构：

[1] UNIV WASHINGTON,DEPT CHEM ENGN,POLYMER COMPOSITES LAB,SEATTLE,WA 98195

[2] SEOUL NATL UNIV,DEPT CHEM ENGN,SEOUL,SOUTH KOREA

来源：

POLYMER COMPOSITES | 1995年 / 16卷 / 05期

关键词：

D O I：

10.1002/pc.750160505

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Gas permeation and creep deformation of a commercial prepreg, which exhibits viscoelastic characteristics, were investigated as a function of time, temperature, and consolidation pressure. Experiments using a prepreg stack demonstrated that the material exhibited a linear viscoelastic bulk deformation under vacuum/auto-clave pressure and furthermore, the in-plane gas flow exhibited non-Darcian flow behavior with a permeation hysteresis, This behavior was viewed and analyzed by two viscoelastic relaxation processes: (1) bulk dimensional relaxation, and (2) microscopic pore structure rearrangement. A modified standard linear solid (SLS) viscoelastic model was used to interpret the creep compliance and dynamic gas permeability utilizing two independent relaxation parameters. By visual investigation of pore sizes and their distribution, air permeation was found to take place mostly through the interlaminar porosity network for the prepreg system examined.

引用

页码：370 / 377

页数：8

共 14 条

[1] ANALYSIS AND CHARACTERIZATION OF PREPREG TACK [J].

AHN, KJ ;

SEFERIS, JC ;

PELTON, T ;

WILHELM, M .

POLYMER COMPOSITES, 1992, 13 (03) :197-206

[2]

AHN KJ, 1991, SAMPE J, V27, P19

[3] PREPREG PROCESSING SCIENCE AND ENGINEERING [J].

AHN, KJ ;

SEFERIS, JC .

POLYMER ENGINEERING AND SCIENCE, 1993, 33 (18) :1177-1188

[4]

ALTENEDER AW, 1993, THESIS U WASHINGTON

[5]

BREUKERS JJ, 1988, P ANN TECH C AM SOC, P12

[6]

Greenkorn R., 1983, ENERGY POWER ENV, V16

[7] NON-DARCIAN FLOW, HEAT AND MASS-TRANSFER IN CATALYTIC PACKED-BED REACTORS [J].

HUNT, ML ;

TIEN, CL .

CHEMICAL ENGINEERING SCIENCE, 1990, 45 (01) :55-63

[8]

JOUIN P, 1992, J COMPOS MATER, V10, P293

[9]

MORGAN PE, 1974, CARBON FIBERS THEIR, P154

[10]

PELTON T, 1991, 23RD P SAMPE TECHN C, P196

← 1 2 →