(Filled
urethane system with low viscosity, after curing, exhibiting very good
electric properties、mechanic
properties and low water absorption, suited for potting or casting of
electric electronic units. )
l
Properties:
|
Item
|
Testing Method or Unit
|
WL-4500-1A/-1B
|
|
Appearance
|
A
|
By visual
|
Brown liquid
|
|
B
|
Black liquid
|
|
Viscosity
|
A
|
25℃ mPa·s
|
50-100
|
|
B
|
3000-5000
|
|
A+B
|
500-1000
|
|
Density
|
A
|
25℃ g/cm3
|
1.13±0.05
|
|
B
|
1.36±0.05
|
|
Tack-free time
|
30g 25℃ min
|
>30
|
|
Mixing Proportion
|
By weight
|
A ：B=30 ：100
|
|
Curing
Schedule
|
℃/h
|
25℃/24 or 60/3-4
|
|
Shelf life
|
R.T. sealed
|
3 months
|
l
Properties after Curing：
|
Item
|
Testing Method or Condition
|
|
|
Hardness
|
Shore-A
|
85±5
|
|
Volume Resistance
|
25℃，Ω·cm
|
>1013
|
|
Water Absorption
|
24h, 25℃，%
|
<0.3
|
|
Insulation Strength
|
25℃，kV/mm
|
>20
|
|
Tensile strength
|
MPa
|
12
|
|
Flammability
|
UL-94
|
V-0
|
l
Storage:
The products should be stored in a
dry place and in the tightly closed original container. Under these
conditions their shelf life will be as shown above.
l
Packaging:
4500-1A: 20kg metal
container.
4500-1B: 18kg metal
container.
l
Remarks:
(Working Place Safe Protection)
Working Overall
Needed
Gloves
Must
Sleeve
Recommended while contacting skin
Goggle/ Safety Glass
Needed
Anti-toxic Mask/ Anti-dust Mask
Not needed
( Skin Protection)
Before Working
Bare skin need to be rubbed with protection oil or paste.
After Working
Rubbed with protection or nutrition oil or paste.
Contaminated skin washing
Slightly rub with paper tissue, then wash with warm water
and non-alkali soap, Don’t use solvents!
( Cleaning for the working place)
Use light color paper to cover working
table, or use disposable beaker etc.
( Spilled materials tereatment)
Use sawn wood powder or cotton to absorb it, then put into
Garbage Bin lined with plastic film.
(Ventilation)
Workshop
Vent,
often have air changing
Working Place
Install Vent Fan, Prevent from inhaling steam.
Ú
Note:
The data above are typical tested at a relative humidity of 70 % and a
temperature of 25℃.
They are just for customers’ reference. We cannot wholly guarantee all the
listed data will be reached under specific test conditions. When applying the
product, the customers should use data obtained through their own testing.
