AATCC 76-2005 纺织品表面电阻试验方法.pdf

AATCC Test Method 76-2005
Electrical Surface Resistivity of Fabrics
Developed in 1954 by AATCC Commit
4.3 The radio
tee RA32; revised 1963. 1968. 1970 di
iis alpha r:は- the fabr
hich is externall hamlg'ss to
1972. 1973. 1982, 1995, 2000(with I-the human bod. The radioactive ise
tie change); reaffirmed 1969, 197.
7. Proced ifre
1978, 1989; editorially revised 19
chould be exercised 1o prevent ingestion
7.1 Calibrate the elcu
1984, 1985, 1997, 2004; editorially re- or inha ation of the solid material. Do not ctcr according ta the nanuaclurcr's
vised and reaffirmed 1987. 2005
ke the radioactive har apart or touch thc recommendations. This calibration should
coactive strip under the grid. If the be
1. Purpose and Scope
strip is touched or handled, wash hand
R
7. 2 Condition the test specimens in a
r condit
manufacturer when it loses its effe
room at a predetermined relative humid
to determine the eiectrical surfacc resi
livens
ity that will reflect the conditio
nics. The surface electrica
posal il use is to be discontinued. Do no which information on the electrical resi
Sistivity may influence the accumulation
discard as scrap.
tivity ofthe fabric is neede
of electrostatic chargc of a fabric(refer to
7. 2.I For most fabrics which require an-
AATCC Method 84 for deermination of 5. Apparatus and Materials
tistatic treatnlcnts or whose static propen.
ents at 20%0 rela
tive humidity xilf be
Principle
7.2.2Jn!c
5.2 Conditioning and test chamber (see ative humidity mr: a
I Specimens
librium with 11.2
7.2.3For
specified atmospheric conditions of rc)a
ments oth
5.3 Standard resistors (see 11.3
tive
idities may be used, F
tive humidity and tempcrature are me
5.4 Radioacti
sured for electrical resisance be
upl
arallel electrodes by mcans of an electri- of suitable size to serve as electrod:s es at 21 4 2"C is required for antistatic
al resistance meter
sheeting, film and textiles for use in hos.
5.5.] As an alternative. two concentr
I operating rooms(see 11.2.1). Mca
made under oth
3. Terminology
malerial being measured and the purpose ditions or ranges of conditions that are
3.I electrical resistivity
of the resulis(see 11.1.1
able to the
propcrty of a substance whose numerical
RH and 24C). It is preferable to keep the
value is equal to the ratio of the voltage 6, Test Specimens
tempcrature or humidity consistent for all
gradient to the current density
measurements
NOTE: For the purposes of this method
6.1 Adjust the size of fabric test spec
7.2, 4 f it is necessar to measu
suriace resistivity is calculated by usi
n
mens to suit the electrodes of the parlicu-tricad resistivity under a broad range of
the measured electrical resistance be lar equipment being used. When using
nditions, additionai tests may be run at
tween superficially positioned paralle! parallel plate electrodes, the width of the 65%Ril and at 24"C or thr settings ap.
plates or concentric rings and their spac. specimen must not exceed the width of plicable to the end use. It is preferable to
on55
]his test method in eftect measures the rings. any size specimen at least as large tent fo