-
UL94
标准
?
UL94 HB
flammability standard (UL94
HB
可燃性标准
)
o
Requirements
for HB (HB
的要求条件
)
?
UL94 V-0,
V-1, V-2 flammability standard (UL94 V-0, V-1,
V-2
可燃性标准
)
o
Requirements
for V-0 (V-0
的要求条件
)
o
Requirements for V-1
(V-1
的要求条件
)
o
Requirements
for V-2 (V-2
的要求条件
)
?
UL94 5VA & 5VB flammability standard (UL94 5VA &
5VB
可燃性标准
)
o
Requirements
for 5VA (5VA
的要求条件
)
o
Requirements for 5VB
(5VB
的要求条件
)
?
UL94
criteria summary
(UL94
判定标准摘要
)
?
Glow Wire
testing
?
Obtaining m
aterial
recognition
(
取得材料认证
)
?
UL test
descriptions (UL
测试描述
)
?
UL file numbers for RTP Company (RTP
公司的
UL
档案号码
)
?
Requesting a UL Yellow Card from RTP Company (
向
RTP
公司要
UL<
/p>
黄卡
)
UL 94 HB flammability standard(UL94
HB
可燃性标准
)
Specim
en
试片
Length 125 mm
(5 in) x Width
13 mm
(0.5 in) x Thickness [typically
1.5 mm
(1/16
in) or 3.0
mm
(1/8 in) or 6.0 mm (1/4 in)].
长
125mm(5
< br>宽
13mm(1/2
厚度
[
一般为
1.5mm(1/16
、
3.0mm
(1/8
或
6.0mm
(1/4
厚
]
Procedure
程序
1.
Three specim
ens of each
thickness are tested after
conditioning for 48 hours at
23 degrees C and 50% RH.
每一种厚度准备了三个试片，测试前先在
23
℃和
50%
相对湿度下放置
48
小时。
2.
Each specim
en
is mounted with its long axis horizontal and its
short axis at a
45 degree angle.
每一试片以长轴呈水平、短轴呈
45°
方式固定。<
/p>
3.
Each specim
en is marked
with two lines, 25 mm and 100 mm from one end of
the specim
en.
每一试片在
25mm
及
100mm
处画线做记号。
4.
Each
specim
en
is supported at one
end such that its lower edge
is 10
mm
above a piece of wire
gauze.
每一试片之一端固定，低缘下方
10mm
处水平放置一片金属细网。
5.
A
20
mm
high
blue
Bunsen
burner
flam
e
is
applied
to
the
free
end
of
the
specim
en for 30 second and
then rem
oved. If the
specim
en continues to burn after
the rem
oval of the test
flam
e, the tim
e
for the flame front to
travel between
the
two
gauge marks is
measured and the burning rate
calculated in millim
eters
per minute.
一个
20
mm
高蓝色本生灯火焰燃烧试片未固定之一端
30
秒钟然后移开。
在火焰移开后假如试
片继续燃烧，
则测出火焰由前缘燃烧至
2
个记号之间所用的时间。
燃烧速率以
mm/min
计算。
Requirements for HB
HB
等级的判定标准
6.
The specim
ens
m
ay not have a burn rate
ex
ceeding 40 mm
per minute
over a
75 mm
span for
specimens having a thickness of 3.0 mm to 13 mm,
or
3.0mm
到
13mm
厚度之试片，没有一个在
75mn
距离内燃烧速率超过
40mm/min
或
7.
The
specim
ens m
ay not have a
burn rate ex
ceeding 75 mm
per minute over a
75 mm
span
for specimens having a thickness less than 3.0 mm,
or
小于
3mm
厚度之试片，没有一个在
75mm
距离内燃烧速率超过
75mm/min
或
8.
The
specim
ens cease to burn before the
flam
e reaches the 100 mm mark.
火焰在接近
100mm
记号前中止燃烧。
[
Top ]
UL 94 V-0, V-1, V-2 flammability
standard(UL94 V-0, V-1,
V-
2
可燃性标准
)
Specim
en
试片
Length 125
mm
(5 in) x Width 13 mm
(0.5
in) x Thickness [typically 0.7 mm
(1/32
in) or 1.5 mm
(1/16 in) or
3.0 mm
(1/8 in)].
长
125mm(5
宽
13mm(1
/2
厚度
[
一般
为
0.7mm(1/32
、
1.5m
m(1/16
、
3mm(1/8
厚
]
Procedure
程序
1.
A total of 10
specim
ens (2 sets) are tested per
thickness.
每一厚度总共
10
个试片
(
分为两组
)
被测试。
2.
Five specim
ens
of each thickness are tested aft
er
conditioning for 48 hours at
23 degrees
C and 50% RH.
每一厚度取
< br>5
个试片为一组在
23
℃和
50%
下放置
48
小时后再测试。
3.
Five specim
ens of each
thickness are tested after
conditioning
for 7 days at 70
degrees C.
同一厚度另取
5
个试片为一组在
70
℃下放置
7
天后
再测试。
4.
Each specim
en is mounted
with long axis vertical
每一试片以长轴垂直地面方式固定。
5.
Each
specim
en is supported such that its
lower end is 10 mm above Bunsen
burner
tube.
试片上端被支撑以致下端高于本生灯
10mm
。
6.
A blue 20
mm
high flame
is applied to the center of
the lower edge
of the
specim
en for
10
seconds and
removed. If burning ceases
within 30 seconds, the
flam
e
is reapplied for an additional 10 seconds. If the
specim
en drips, particles are
allowed to fall onto a layer of dry
absorbent surgical cotton placed 300 mm below
the specim
en.
蓝色
20mm
高火焰燃烧试片下端边缘中心
10
秒钟，
然后移开。
假如试片在
30
秒之内停止
燃
烧，则本生灯火焰再次燃烧试片下端边缘中心
10
秒钟。假如试片熔化，则滴下来的火焰分子会
掉落在距试片下端
300mm
处之棉花层。
Requirements for V-0
(V-0
的要求条件
)
7.
The
specim
ens
may
not
burn
with
flaming
com
bustion
for
more
than
10
seconds after either application of the
test flam
e.
在每一次
本生灯火焰燃烧
10
秒钟移开后，没有任何一个试片被火焰点燃
超过
10
秒钟。
8.
The
total
flaming
com
bustion tim
e
m
ay not exceed 50 seconds for the 10
flam
e
applications for each
set of 5 specim
ens.
每一组的
5
个试片中，
共
10
次火焰燃烧
10
秒钟移开后，
总共火焰燃烧的时间不超过
50
秒钟。
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