PRODUCT DESCRIPTION
Hysol® OS2800 is a fast curing, water-white epoxy casting system designed specifically for the encapsulation of seven segment displays. This new system will cure rapidly at temperature above 100°C and can be colored by the addition of specific dye concentrates, AC7113 red, AC7044 green and AC7112 yellow. AC7117 is recommended as a standard diffusant for OS2800.
TYPICAL APPLICATIONS
Optoelectronic Liquid Encapsulant
PROPERTIES OF UNCURED MATERIAL
OS2800 OS2800
Part A Part B
Color Clear Blue Clear
Lt. Yellow
Specific Gravity @ 25°C, (77°F) 1.15 1.18
Gm/cc ASTM D1475
Shelf Life @ 25°C, (77°F), months 12 6
Typical Value
Viscosity @ 25°C, (77°F)
ASTM D2393
Brookfield RVF , cP 6,500 225
PHYSICAL PROPERTIES, CURED MATERIAL
OS2800
Color Water-white
Coefficient of Thermal Expansion, in/in/°C
ASTM D3386 70 x 10-6
Glass Transition, T(g),°C 130
Moisture Absorption, % (ASTM D570)
24 hours @ 115°C 1.88
7 days @ 25°C 0.45
Hardness, Shore D, (ASTM D2240) 90
Tensile Strength, psi, (ASTM D790) 10,000
Flexural Strength, psi (ASTM D790) 20,000
Cured Electrical Properties
25°C
K D
100 Hz 3.17 0.006
1 kHz 3.13 0.011
10 kHz 3.05 0.014
100 kHz 2.96 0.012
K = Dielectric constant by ASTM D150
D = Dissipation Factor by ASTM D150
Performance Properties
T-Cycles (55°C-+100°C)
<1% failures 1,000 cycles
Light Transmittance 400 nm 800 nm
Initial 75% 90%
After 500 hours @ 121°C 56% 90%
Handling
(Recommended mix ratio and typical mixed properties)
Mix Ratio, parts by weight* 100/106
Pot Life, Hours 5-6
Initial Mixed Viscosity @ 25°C, cP 1100
*Mix ratio of these materials is fixed by their chemistry. Any attempt to increase or decrease the cure rate by adding more or less hardener will result in degraded materials.
GENERAL INFORMATION
For safe handling information on this product, consult the Material Safety Data Sheet, (MSDS).
This product is not recommended for use in pure oxygen and/or oxygen rich systems and should not be selected as a sealant for chlorine or their strong oxidizing materials
Cure Schedule
(Recommended for optimum properties)
Recommended Cure 4 hours @ 105°C
Note: Larger parts may require 2 hours @ 85°C pre-cure to minimize exotherm. If exotherm temperature exceeds 140°C, severe yellowing will occur. Typical cured properties were determined using the recommended cure schedule. Some differences in properties may occur with the alternate or other cure schedules.
Note
The data contained herein are furnished for information only and are believed to be reliable. We cannot assume responsibility for the results obtained by others over whose methods we have no control. It is the user’s responsibility to determine suitability for the user’s purpose of any production methods mentioned herein and to adopt such precautions as may be advisable for the protection of property and of persons against any hazards that may be involved in the handling and use thereof. In light of the foregoing, Loctite Corporation specifically disclaims all warranties expressed or implied, including warranties of merchantability or fitness for a particular purpose, arising from sale or use of Loctite Corporation’s products. Loctite Corporation specifically disclaims any liability for consequential or incidental damages of any kind, including lost profits. The discussion herein of various processes or compositions is not to be interpreted as representation that they are free from domination of patents owned by others or as a license under any Loctite Corporation patents that may cover such processes or compositions. We recommend that each prospective user test his proposed application before repetitive use, using this data as a guide. This product may be covered by one or more United States or foreign patents or patent applications.
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