| Customization: | Available |
|---|---|
| CAS No.: | 7085-85-0 |
| Formula: | Mixture |
|
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BESIL9446 brand one-part heat cure (addition-curing) adhesives cure rate is rapidly accelerated with heat (see cure schedules in table) and an optimum cure schedule will balance processing performance and costs.
For thicker sections or if voiding is observed the use of a 30-minute pre-cure at 70 °C (158 °F) or the use of an adhesive with low-void technology may reduce voids. Addition-cure silicones are formulated with all necessary ingredients for cure and there are no by-products generated during the cure process. Deep-section or confined cures are possible as cure reactions progress evenly throughout the material. Beginor BESIL brand adhesives retain their original physical and electrical properties over a broad range of operating conditions which enhance the reliability and service life of electronic devices.
Keyword:silicone sealant adhesive
APPLICACTION AREAS:
Designed to provide long-term thermal stability of various metal bonding, glass, plastic, ceramic substrate design.
suitable for sealing lids and housings, attaching baseplates, gasketing, connector sealing, engine control, ABS, transmission, and lighting applications, Plastic shell and aluminum plate bonding, electric steam chamber sealed, microwave floor seal, heating element bonding.
TYPICAL PROPERTIES:
|
Property |
Unit |
Result |
|
One or Two-part |
- |
One |
|
Color |
- |
Black/Gray/White |
|
Viscosity |
Cps |
Semi-flowable |
|
Heat cure time at 100 ºC |
Minutes |
180 |
|
Heat cure time at 125 ºC |
Minutes |
120 |
|
Heat cure time at 150 ºC |
Minutes |
60 |
|
Specific Gravity(Cured) |
g/cm3 |
1.30 |
|
Tensile Strength |
MPa |
3.2 |
|
Elongation |
% |
260 |
|
Tensile Modulus |
MPa |
1.8 |
|
Tear Strength(Die B) |
N/cm |
56 |
|
Durometer Shore A |
- |
38 |
|
Lap shear to Aluminum |
MPa |
2.8 |
|
Dielectric Strength |
Kv/mm |
20 |
|
Volume Resisitivity |
Ohm.cm |
5E+14 |
|
Dielectric Constant at 100 Hz |
- |
3.9 |
|
Dissipation Factor at 100 Hz |
- |
0.009 |
|
Working temperature |
ºC |
-60--250 |
|
Hardening Transition by DSC |
ºC |
-45 |
Marked: all value was tested after cured 60mins at 150 ºC.The adhere strength was quite different if cured under 100 ºC,
125 ºC or 150 ºC.
PREPARING SURFACES
All surfaces should be thoroughly cleaned and/or degreased with naphtha, mineral spirits, methyl ethyl ketone (MEK) or other suitable solvent. Solvents such as acetone or isopropyl alcohol (IPA) do not tend to remove oils well, and any oils remaining on the surface may interfere with adhesion. Light surface abrasion is recommended whenever possible, because it promotes good cleaning and increases the surface area for bonding.
A final surface wipe with acetone or IPA is also useful. Some cleaning techniques may provide better results than others; users should determine the best techniques for their particular applications.
USABLE LIFE AND STORAGE
Syringes should be kept tightly closed and kept in cold storage at all times to extend shelf life. The product should be stored in its original packaging with the cover tightly attached to avoid any contamination. Store under -5 ºC and shelf life is 6 months.
PACKAGING INFORMATION
10cc and 30cc syringes are available for this product, also 1kg and 5gallons.
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