Ultraclear™ is a series of crystal clear casting resins that are easily poured, have high physical properties, and are available in a wide range of gel times.
- Exceptional clarity with refractive indices ranging from 1.502-1.585
- Available in 20, 30, 50, 200, and 900 min. gel times.
- Extremely UV resistant.
- High physicals such as: HDT, tensile strength, and impact resistance.
Ultraclear™ can be used in a wide variety of applications that require exceptional clarity; e.g., encapsulation, optical components, part overmolding, test models, and display pieces. The wide range of gel times makes Ultraclear™ suitable for small, average sized or extremely large castings.
NOTE: These products may have a negative reaction to silicone based rubbers and release agents. Contact a Hapco representative for more information.
| Physical Properties |
435 |
436 |
437 |
438 |
439 |
| Mix Ratio by Volume A:B |
100:75 |
100:75 |
100:75 |
100:75 |
100:75 |
| Mix Ratio by Weight A:B |
100:70 |
100:70 |
100:70 |
100:70 |
100:70 |
| Gel Time 100 grams @ 25˚C |
20 min. |
30 min.
|
50 min.
|
200 min.
|
900 min.
|
| Color (cured) |
Crystal Clear |
Crystal Clear |
Crystal Clear |
Crystal Clear |
Crystal Clear |
| Hardness Shore |
78D |
78D |
78D |
78D |
78D |
| Viscosity mixed at 25˚C |
570 |
570 |
570 |
570 |
570 |
| Specific Gravity mixed at 25˚C |
1.03 |
1.03 |
1.03 |
1.03 |
1.03 |
| Shrinkage |
.002-.006 |
.002-.006 |
.001-.003 |
.0005-.001 |
.0005-.001 |
Demold Time @ 70˚F
1/8" thick |
5-8 hrs.
|
12-16 hrs.
|
24 hrs.
|
See Note #2
|
See Note #2
|
Weight per cubic inch (lbs) |
0.0372 |
0.0372 |
0.0372 |
0.0372 |
0.0372 |
| Physical Properties |
465 |
466 |
467 |
468 |
469 |
| Mix Ratio by Volume A:B |
100:75 |
100:75 |
100:75 |
100:75 |
100:75 |
| Mix Ratio by Weight A:B |
100:75 |
100:75 |
100:75 |
100:75 |
100:75 |
| Gel Time 100 grams @ 25˚C |
20 min. |
30 min.
|
50 min.
|
200 min.
|
900 min.
|
| Color (cured) |
Crystal Clear |
Crystal Clear |
Crystal Clear |
Crystal Clear |
Crystal Clear |
| Hardness Shore |
82D |
82D |
82D |
82D |
82D |
| Viscosity mixed at 25˚C |
575 |
575 |
575 |
575 |
575 |
| Specific Gravity mixed at 25˚C |
1.04 |
1.04 |
1.04 |
1.04 |
1.04 |
| Shrinkage |
.002-.006 |
.002-.006 |
.001-.003 |
.0005-.001 |
.0005-.001 |
Demold Time @ 70˚F
1/8" thick |
5-8 hrs.
|
12-16 hrs.
|
24 hrs.
|
See Note #2
|
See Note #2
|
Weight per cubic inch (lbs) |
0.036 |
0.036 |
0.036 |
0.036 |
0.036 |
Notes:
1. Hardness was tested after curing @ 80°C for 16 hours. For best properties, cure @ room temperature (21-23ºC) and postcure @ 60-80ºC for 4-12 hours. HDT and flexural strength increase with a postcure.
2. Ultraclear 438, 439, 468, & 469 have been developed with a slow cure and low exotherm for large castings. Cure is mass and temperature dependent. A step cure is recommended. Overnight @ 70°F (21°C), plus 12 hours @ 122°F (50°C) and 12 hrs. @ 149°F (65°C). The step cure may be varied depending on mass and final use. Step cures may not be necessary in some applications. Contact Hapco for more information.
Sample Parts
Ultraclear™ - 467
Lens |
Ultraclear™- 436
Cat Sculture |
Ultraclear™- 465
Threaded Component |
|
