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Product introduction
ARCHCELL® WP
ARCHCELL® is a closed-cell rigid PMI (Polymethacrylimide) foam, which used as the core of lightweight sandwich structure.
WP (Wave permeability) is a grade specially designed for wave-transparent needs. ARCHCELL®, as a foaming material, actually has a good overall performance in wave transmission, and WP is optimized on this basis, with very low dielectric constant and favorable high frequency transmission characteristics, as well as good elongation at break, making it a good choice for antenna and medical applications. This grade can be compatible with process conditions of 130°C and 0.3 MPa. And it is suitable for various curing processes (autoclave, vacuum infusion, RTM, VARTM, VARI, HP-RTM, etc.). Also, it has good processability and can be easily thermoformed or CNC machined. The fine cell size of this grade and the closed cell structure of the foam ensure a good balance between peel strength and product weight of the sandwich structure parts.
TYPICAL PROPERTY VALUE
|
Properties |
Unit |
31 WP |
51 WP |
71 WP |
Standard |
|
Density |
kg/m3 |
32 |
52 |
75 |
ISO 845 |
|
lbs/ft3 |
2 |
3.25 |
4.68 |
ASTM D1622 |
|
|
Compressive Strength |
MPa |
0.42 |
0.95 |
1.81 |
ISO 844 |
|
psi |
60.9 |
137.8 |
262.5 |
ASTM D1621 |
|
|
Tensile Strength |
MPa |
1.06 |
1.98 |
3.11 |
ISO 527-2 |
|
psi |
153.7 |
287.1 |
451.0 |
ASTM D638 |
|
|
Shear Strength |
MPa |
0.41 |
0.82 |
1.4 |
DIN 53294 |
|
psi |
59.5 |
118.9 |
203.0 |
ASTM C273 |
|
|
Elastic Modulus |
MPa |
34.5 |
71.3 |
98.7 |
ISO 527-2 |
|
psi |
5002.5 |
10338.5 |
14311.5 |
ASTM D638 |
|
|
Shear Modulus |
MPa |
13.7 |
21.4 |
36.1 |
DIN 53294 |
|
psi |
1986.5 |
3103.0 |
5234.5 |
ASTM C273 |
|
|
Elongation at Break |
% |
5.56 |
4.04 |
4.17 |
ISO 527-2 |
|
ASTM D638 |
|||||
|
HDT |
℃ |
184.6 |
185.6 |
188.5 |
DIN 53424 |
|
°F |
364.3 |
366.1 |
371.3 |
The above technical data are typical values at nominal densities
ARCHCELL ® 71 WP DIELECTRIC PROPERTIES
Test Rrequency Range：7.0GHz-18.0GHz; Test Mothod: GB/T 5597-1999
|
Properties |
Unit |
ARCHCELL® 71WP |
|
ε (f=7205MHz) |
［-］ |
1.07 |
|
tanδ(f=7205MHz) |
［-］ |
0.000419 |
|
ε (f=8606MHz) |
［-］ |
1.07 |
|
tanδ(f=8606MHz) |
［-］ |
0.000364 |
|
ε (f=10248MHz) |
［-］ |
1.07 |
|
tanδ(f=10248MHz) |
［-］ |
0.000512 |
|
ε (f=12031MHz) |
［-］ |
1.07 |
|
tanδ(f=12031MHz) |
［-］ |
0.000489 |
|
ε (f=13903MHz) |
［-］ |
1.07 |
|
tanδ(f=13903MHz) |
［-］ |
0.000502 |
|
ε (f=15833MHz) |
［-］ |
1.07 |
|
tanδ(f=15833MHz) |
［-］ |
0.000521 |
|
ε (f=17804MHz) |
［-］ |
1.07 |
|
tanδ(f=17804MHz) |
［-］ |
0.000459 |
The above technical data are typical values at nominal densities
Sales Range
|
Grade |
Size（mm） |
Standard Sheet Thickness （mm） |
Possible Sheet Thickness（mm） |
|
31 WP |
2500*1250 |
110 |
1-185 |
|
51 WP |
2500*1250 |
90 |
1-155 |
|
71 WP |
2500*1250 |
90 |
1-140 |
Thickness tolerance±（0.2mm）