Thermal conductivity and diffusivity of high-strength polymer fibers

被引：73

作者：

Fujishiro, H ^{[1
]}

Ikebe, M ^{[1
]}

Kashima, T ^{[1
]}

Yamanaka, A ^{[1
]}

机构：

[1] TOYOBO CO LTD,RES INST,OTSU,SHIGA 52002,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1997年 / 36卷 / 9A期

关键词：

thermal conductivity; thermal diffusivity; polyethylene fiber; polybenzobisoxazole fiber; FRP; anisotropy ratio; phonon mean free path;

D O I：

10.1143/JJAP.36.5633

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The thermal conductivity kappa and diffusivity alpha of high-strength and high-modulus crystalline polymer fibers (polybenzobisoxazole (Zylon(R)) and polyethylene (Dyneema(R))) and their fiber-reinforced plastics (FRPs) were measured in directions parallel and perpendicular to the molecular chain axis of the fibers. The main contribution to thermal conductivity was from phonon conduction along the molecular chains in both fibers and the phonon conduction was limited by boundary-like scattering over the temperature range of 10-260 K. From the analyses using a phenomenological model, the thermal conductivity anisotropy ratio (kappa(parallel to)(fiber)/kappa(perpendicular to)(fiber)) estimated to be 80 at 100 K, which was about two or three times larger than that of Dyneema fiber.

引用

页码：5633 / 5637

页数：5

共 15 条

[1]

BERMAN R, 1975, THERMAL CONDUCTION S

[2] LOW-TEMPERATURE THERMAL-CONDUCTIVITY OF POLYETHYLENE [J].