Appearance |
Uncured |
naked eye |
- |
Amber resin |
Amber resin |
Amber resin |
Black viscous liquid |
Cured |
naked eye (@ surface) |
- |
No blisters and cracks |
No blisters and cracks |
No blisters and cracks |
No blisters and cracks |
Curing rate |
UV-DSC |
% |
99.4 |
99.7 |
99.1 |
98.6 |
Viscosity |
Rheometer(@25℃) |
cPs |
10,000 |
11,500 |
7,000 |
58,000 |
Hardness |
Shore 00 |
- |
90 |
95 |
100 |
- |
Tensile strength (@break) |
UTM |
N/㎟ |
22.8 |
24.8 |
25.2 |
15 |
Normal strength |
UTM(substrate: LCP/glass) |
N/㎟ |
2.5 |
2.0 |
2.7 |
- |
Shear strength |
After UV curing (substrate: glass/glass) |
N/㎟ |
1.6 |
0.2 |
1.8 |
27.4kgf/20㎟(FR4/ FR4) |
Modulus |
DMA(@30℃) |
N/㎟ |
103 |
104 |
110 |
400 |
Tg |
TMA |
℃ |
91.5 |
95.3 |
96.9 |
80 |
CTE |
α’(ppm/℃) |
ppm/℃ |
70 |
65 |
62 |
80 |
α’’(ppm/℃) |
ppm/℃ |
150 |
163 |
169 |
175 |
Dielectric constant |
Impedence (@ 1KHz) |
- |
2.46 |
2.71 |
4.23 |
- |
Dielectric strength |
Withstand voltage &leak current tester |
V/mil |
5,700 |
5,700 |
5,700 |
- |