PHOTOACOUSTIC CHARACTERIZATION OF THE EFFECTS OF AIR INCLUSION ON THE THERMAL-PROPERTIES OF FOAMED POLYURETHANE

被引：11

作者：

LEITE, NF ^{[1
]}

MIRANDA, LCM ^{[1
]}

机构：

[1] INST POLITECN RIO DE JANEIRO,BR-28600 NOVA FRIBURGO,RJ,BRAZIL

来源：

JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 20期

关键词：

D O I：

10.1007/BF00541605

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The usefulness of the open photoacoustic cell technique for investigating the effects of air inclusions on the thermal properties of foamed polyurethane is demonstrated. It is shown that the thermal diffusivity and thermal expansion coefficients increase with decreasing values of the resin to catalyst ratio, which corresponds to greater air inclusion in the resin.

引用

页码：5449 / 5452

页数：4

共 22 条

[1] ANALYTICAL OPTOACOUSTIC SPECTROMETRY .3. OPTOACOUSTIC EFFECT AND THERMAL-DIFFUSIVITY [J].

ADAMS, MJ ;

KIRKBRIGHT, GF .

ANALYST, 1977, 102 (1213) :281-292

[2]

[Anonymous], 1892, PHILOS MAG

[3]

BENTO AC, 1987, PHYS CHEM GLASSES, V28, P127

[4] PHOTO-ACOUSTIC DETERMINATION OF THERMAL-DIFFUSIVITY OF SOLIDS - APPLICATION TO CDS [J].

CESAR, CL ;

VARGAS, H ;

MENDES, J ;

MIRANDA, LCM .

APPLIED PHYSICS LETTERS, 1983, 43 (06) :555-557

[5] INVESTIGATION OF POLING FIELD EFFECTS ON PVDF PYROELECTRIC DETECTORS - PHOTOACOUSTIC THERMAL-DIFFUSIVITY MEASUREMENTS [J].

FRANZAN, AH ;

LEITE, NF ;

MIRANDA, LCM .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1990, 50 (04) :431-438

[6] PHOTOACOUSTIC MEASUREMENT OF THERMAL-PROPERTIES OF A THIN POLYESTER FILM [J].

LACHAINE, A ;

POULET, P .

APPLIED PHYSICS LETTERS, 1984, 45 (09) :953-954

[7]

LEITE NF, 1987, J APPL PHYS, V61, P3023

[8]

MAXWELL JC, 1904, TREATISE ELECTRICITY, P135

[9] GENERALIZED THEORY OF PHOTOACOUSTIC EFFECT [J].

MCDONALD, FA ;

WETSEL, GC .

JOURNAL OF APPLIED PHYSICS, 1978, 49 (04) :2313-2322

[10] THERMAL-DIFFUSIVITY OF POLYMER FOILS - SEMICRYSTALLINE PETP AND PE - AS A FUNCTION OF DRAWING [J].

MERTE, B ;

KORPIUN, P ;

LUSCHER, E ;

TILGNER, R .

JOURNAL DE PHYSIQUE, 1983, 44 (NC-6) :463-467

← 1 2 3 →