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Yocosil® is a high temperature silicon.
There are several variants available
:
- Yocosil H.T.®
- Yocosil-7®
- Yocosil-14®
- Yocosil-18®
Yocosil
H.T.®
Thermomechanical
and chemical characteristics
Characteristics
/ Initial state
DIDC hardness
(NFT46-003) : 87 points
Instantaneous Shore hardness (NFT46-052) : 89 points
Density (NFT46-030) : 1,21
Tensile resistance (NFT46-002) : 3,8 MPa
Tensile elasticity : 73%
Tear resistance (NFT46-007) : 13,2 kN/m
Residual
deformation under 25 % compression
After a period
of 70h at 150°C (NFT46-011) : 20,9%
70 hour
ageing at 300°C in the open air (NFT46-004)
DIDC hardness
: 80 points
Variation in DIDC hardness : -7 points
70 hour
ageing at 100°C in oil ASTM N° 1 (NFL17-106)
DIDC hardness
: 81 points
Variation in DIDC hardness : -6 points
Tensile resistance : 3,1 MPa
Variation in tensile resistance : -0,7%
Tensile elasticity : 78%
Variation in tensile elasticity : +5%
Volume variation : +3,4%
Cold performance
(NFT46-018)
Temperature of
non fragility
Measured at
-65°C : neither fissures or cracking
Thermal characteristics
Thermal
conductivity (CT)
Measurement taken
at 30°C, 65% HR and pressure of 1 bar : 0,199W/m°C
Thermal
dilation coefficient (a)
Measurement taken
at between 10 and 130°C (5°C/minute) under
nitrogen : 802,10
°C
Thermal
barrier/performance
Heat source :
500°C±30°C
(controlled at the thermocouple 2mm from the screen
in YOCOSIL HT)
Screen made of
YOCOSIL HT : 4 mm in depth
Distance source/screen
: 20 mm
Temperature reached,
2mm behind the screen, after 30 minutes : 85°C
(temperature controlled according to a calibrated
probe)
Performance of Yocosil
HT in a fire
According to UL
94 (class V)
1)
tests carried out after treatment at 23±2°C
and 50±5% HR
| |
Combustion
period |
Incandescence
period after the 2nd flame application |
Combustion
up to the top level |
Inflammation
of the cellulose wadding |
| After
1st flame |
After
2nd flame |
trial
1
trial 2
trial 3
trial 4 |
0
0
0
0 |
0
0
0
0 |
7,8
5,2
12,1
15,3 |
N
N
N
N |
N
N
N
N |
N = no
2) Tests
carried out after 18hours in an oven (70±1°C)
and cooling in a dessicator for 4 hour
| |
Combustion
period |
Incandescence
period after the 2nd flame application |
Combustion
up to the top level |
Inflammation
of the cellulose wadding |
| After
1st flame |
After
2nd flame |
trial
1
trial 2
trial 3
trial 4
trial 5 |
0
0
0
0
0 |
0
0
0
0
0 |
10,4
0
0
7,5
1,8 |
N
N
N
N
N |
N
N
N
N
N |
N = no
Test conclusions : grade VO
All values
indicated are average values given in good faith.
The companies of the Dedienne Multiplasturgy® Group
cannot be held responsible for their accuracy. |
