| Being the raw materials of the woven-glass PTFE copper-clad subsrtate,the woven-glass PTFE is made up of non-alkali;woven-glass varnished with the dispersed PTFE emulsion by way of diying,baking and sintering processes.It is a kind of heat resisting,insulation,and low loss microwave material with good electrical performances,non-adhesive and high-temperature abilities.It is suitable to electronic,electrical machinery,aviation,textile,chemical and food industries.It can be also used in microwave circuit devices as the separating layer for multi-layer printed-circuit boards. |
|
1.Types:
|
| a.F4B-N Ant adhesive Woven-glass PTFE |
| b.F4B-J Insulation Woven-glass PTFE |
| c.F4B-T Air Permeable Woven-glass PTFE |
| 2.Technical Specifications: |
| a.Exterior Looks:Surface with well paleness and emulsion dispersed homogeneously without cracks and mechanical scars. |
| b.Dimensions:A(length)=1～50m B(width)=900mm～1000mm |
| c.Thickness and Tolerance: |
|
Type
|
Guards against sticks uses F4B-N
|
Insulation F4B-J
|
The ventilation guards against
sticks the varnished cloth F4B-T
|
|
Thicknessδ(mm)
|
0.08
|
0.10
|
0.15
|
0.40
|
0.1
|
0.15
|
0.24
|
0.04
|
0.07
|
|
Tolerance(mm)
|
±0.01
|
±0.02
|
±0.03
|
±0.04
|
±0.05
|
±0.01
|
±0.02
|
±0.004
|
±0.005
|
|
| Mechanical,Physical,Chemical and Electrical Properties: |
|
No.
|
Item
|
Test Conditions
|
Unit
|
Technical Specifications
|
|
1
|
Tonsil Strength
|
Pulling Force Machin
|
Kg/cm²
|
1000
|
|
2
|
Donating Temperature
|
In Back Oven
|
℃
|
250℃ long-term operation 300℃
operation with interruption
|
|
3
|
Chemical Temperature
|
Immersed in Acid Sal Alkali Liquid
|
|
All being inertial
|
|
4
|
Surface Resisant Coefficient
|
Under Atmospheric Temperature
|
Ω
|
≥10¹²
|
|
5
|
Bullk Resistant Coefficient
|
Under Atmospheric Temperature
|
Ω.cm
|
≥10¹³Ωcm
|
|
6
|
Break down Voltage
|
δ=0.8
|
KV
|
≥0.6
|
| |
|
δ=0.1
|
KV
|
≥0.8
|
| |
|
δ=0.15
|
KV
|
≥1.1
|
| |
|
δ=0.20
|
KV
|
≥1.3
|
| |
|
δ=0.40
|
KV
|
≥1.5
|
|
7
|
Dialectical Constant
|
1GHz
|
εr
|
2.7±0.1
|
|
8
|
Dialectical Loss Tangent
|
1GHz
|
tgδ
|
≤2～5×10-4
|
|
