-
UL94
标准
介绍
UL94
?
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
material 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<
/p>
UL
黄卡
)
UL 94 HB flammability standard(UL94
HB
可燃性标准
)
Specimen
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)].
< br>长
125mm(5
宽
13mm(
1/2
厚度
[
一般为
< br>1.5mm(1/16
、
3.0mm
(1/8
或
6.0mm
(1/4
厚
]
Procedure
程序
1.
Three specimens 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 specimen 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。
3.
Each specimen is marked with two lines,
25 mm and 100 mm from one end of the
specimen.
每一试片在<
/p>
25mm
及
100mm
< br>处画线做记号。
4.
Each specimen 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 flame is applied to the free end of the
specimen
for 30 second and then
removed. If the specimen continues to burn after
the removal of
the test flame, the time
for the flame front to travel between the two
gauge marks is
measured and the burning
rate calculated in millimeters per minute.
一个
20mm
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 specimens may not have
a burn rate exceeding 40 mm per minute over a 75
1
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
specimens may not have a burn rate exceeding 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<
/p>
75mm
距离内燃烧速率超过
75mm/
min
或
8.
The specimens cease to
burn before the flame 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
)
Specimen
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
< br>宽
13mm(1/2
厚度
[
一般为
0.7mm(1/32
、
1.5mm(1/16
、
3mm(1/8
厚
]
Procedure
程序
1.
A total of 10 specimens (2
sets) are tested per thickness.
每一厚度总共
10
个试片
(
分为两组
)
被测试。
< br>
2.
Five
specimens of each thickness are tested after
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 specimens 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
specimen is mounted with long axis vertical
每一试片以长轴垂直地面方式固定。
5.
Each
specimen
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
specimen for 10 seconds
and removed. If burning ceases within 30 seconds,
the flame
is reapplied for an
additional 10 seconds. If the specimen drips,
particles are allowed to
fall onto a
layer of dry absorbent surgical cotton placed 300
mm below the specimen.
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 specimens may not burn
with flaming combustion for more than 10 seconds
after either application of the test
flame.
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<
/p>
秒钟。
8.
The total flaming combustion time may
not exceed 50 seconds for the 10 flame
applications for each set of 5
specimens.
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。
9.
The
specimens may not burn with flaming or glowing
combustion up to the holding
clamp.
没有任何试片被火焰点燃并燃烧到试片被夹住固定的上端。
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