RapidVAC  
Innovative Polymers, Inc. specifically formulated this family of polyurethane for use with vacuum-assisted polyurethane casting machines. These rapid prototyping systems offer generous working times with short demold cycles. The low viscosity of these materials facilitates the vacuum degassing process that is key in producing void-free parts.  

 

Product Name
VA-150
VA-160
VA-180
VA-190
VA-270
VA-272
VA-285
VA-300
VA-322
Mix Ratio (parts by weight)
48:100
43:100
32:100
38:100
100:50
100:50
100:58
100:100
100:65
Mixed Viscosity (cps)
325
325
975
975
200
1,200
500
1200
950
Gel Time (seconds)
170 ± 30
170 ± 30
170 ± 30
170 ± 30
150 ± 30
300 ± 60
240 ± 60
360 ± 60
300 ± 60
Approx. Demold Time (mins.)
60
60
60
60
60
60
60
60
60
Hardness (Shore)
50 ± 5 A
60 ± 5 A
80 ± 5 A
90 ± 5 A
70 ± 5 D
80 ± 5 D
85 ± 5 D
80 ± 5 D
85 ± 5 D
Tensile Strength (psi)
400
750
2,500
2,500
6,000
9,700
11,700
8,000
12,900
Tear Strength (pli)
125
125
227
250
N/A
N/A
N/A
N/A
N/A
Flexural Modulus (psi)
N/A
N/A
N/A
N/A
200,000
250,000
365,000
370,000
350,000

Notched Izod Impact (ft.lbs./in.)
N/A
N/A
N/A
N/A
0.5
0.7
0.8
0.6
0.5

Elongation at Break (%)
250%
600%
250%
300%
5%
5%
12%
5%
108°C
Deflection Temp (264psi load)
N/A
N/A
N/A
N/A
60°C
60°C*
84°C
70°C
93°C
Color
Off White
Off White
White
White
White
Water Clear
Off White
Tan
Tan