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Purpose
White Cushion (Amine-Coated Cushion) is a kind of new type drilling cushion for small hole, and is applicable for 0.15mm or less hole on precise multi-layer circuit board. It is designed for substituting bakelite board for meeting the requirements of IS014000.
Technical Parameters:
|
Code |
Items |
Unit |
Standard |
|
1 |
Standard Thickness |
mm |
2.3~2.7±0.2 |
|
2 |
Density (Weight) |
g/cm3 |
880±40 |
|
3 |
Water Content |
% |
[5 |
|
4 |
Non-Straightness of Edge |
mm/m |
±1.0 |
|
5 |
Flexural Strength |
Max Turnup /Diagonal |
[0.5% |
|
6 |
Elastic Modulus |
Mpa |
≥3200 |
|
7 |
Internal Bonding Strength |
Mpa |
＞1.0 |
|
8 |
200C/24hThickness Expansion after Absorbing Water (Bared) |
% |
≤35 |
|
9 |
Static Bending Strength |
Mpa |
≥35 |
|
10 |
Size Stability |
Thickness Direction |
% |
-4.5 or 5 |
|
Length Direction |
% |
-0 or 1.50 |
|
11 |
Surface Hardness |
N/mm2 |
80±5 |
|
12 |
Formaldehyde Release |
mg/100g |
[40 | |