
Thermal conductive potting silicone adhesive in a 1:1 ratio
JOMS 5230A/B is a two-component organic silicone thermal conductive potting compound with a thermal conductivity of 0.8W. It can be deeply cured at room temperature and is suitable for the potting protection of various heat dissipation and temperature-resistant components. It fully complies with the EU ROHS directive and the halogen REACH requirements.
Detailed introduction
Property | GB/T | ASTM | Unit | Value A/B |
Colour (Part A/Part B) | White or Black / White | |||
Viscosity at 23°C (Part A/Part B)¹ | 10247-2008 | D1084 | mPa.s | 3000±1000/3000±1000 |
Specific gravity at 23°C (Part A/Part B) | 13354-92 | D792 | g/cm3 | 1.63±0.05 / 1.63±0.05 |
Catalysed, Mixed 1:1 by weight | ||||
Potting life at 23°C | 10247-2008 | D1084 | mins | 50±10 |
Gel time at 23°C | 10247-2008 | D1084 | Hour | 1.5 |
Cure time at 80°C, 70°C | minutes | 30, 60 | ||
Cure time at 23°C | Hour | 5--8 | ||
Physical properties, cured 30 minutes at 150°C | ||||
Colour | White or Light Gray or Dark Black | |||
Specific gravity at 23°C | 13354-92 | D792 | g/cm3 | 1.63±0.05 |
Durometer hardness | 531.1-2008 | D2240 | Shore A | 55±5 |
Tensile strength | 6328-86 | D412 | MPa | >2.0 |
Elongation at break | 6328-86 | D412 | % | >50 |
Thermal conductivity | 10297- 1998 | D2214 | W/(m.K) | 0.75 |
Volume coefficient of thermal expansion | 20673-2006 | ppm | 230 | |
Electrical properties, cured 30 minutes at 150°C | ||||
Dielectric strength, 2mm thickness | 1693-2007 | D149 | kV/mm | ≥18 |
Permittivity at 100Hz/100kHz | 1693-2007 | D150 | 3.00 | |
Dissipation factor at 100Hz/100kHz | 1693-2007 | D150 | 0.009 | |
Volume resistivity | 1692-92 | D257 | Ohm.cm | 1.1x10¹4 |
Basic Characteristics:
Two-component room-temperature vulcanizing silicone rubber
1:1 mixing ratio
Low hardening shrinkage rate
Excellent high-temperature electrical insulation properties and stability characteristics
Excellent waterproof and moisture-proof properties
Application fields:
Automotive electronics, modules
LED power driver module
Solar panel junction box
Electric vehicle charging post module
Lithium battery packs, capacitor packs
Magnetic sensing coil
Inverter power supply
PACKAGING AND STORAGE
When stored at or below 35°C in the original unopened containers, this product has a usable life of 12 months from the date of production.
Have to test if expired.
JOMS 5230 is available in standard industrial container sizes. Other size should be approved.
Part A: 25kg/pail, 250kg/drum; Part B: 25kg/pail, 250kg/drum.
JOMS 5230 White grade ,part A ,code:0105016;part B ,code:0105017.
JOMS 5230 Gray grade ,part A ,code:0105082;part B ,code:0105083.
JOMS 5230 Black grade ,part A ,code:0105460;part B ,code:0105461.
Item | Method | JOMS 5230 | JOMS 5230-15 | JOMS 5130 | JOMS 5135 | JOMS 5250 | JOMS 5125T |
Appreance | Visual | White or Light Gray or Dark Black,fluid | Gray,fluid | White or Dark Black,fluid | Black, fluid | Colorless | colorle,fluid |
Gel time at 23°C | GB/T 2794-2013 | 1.5 Hour | 30-40 min | 30-40 min | 30-40 min | 70 min | 60 min |
Specific gravity at 23°C (Part A/Part B) | GB/T 15223-1994 | 1.63 | 2.6 | 1.35 | 1.35 | 0.99 | 1.02 |
Mix Ratio | mass ratio | 100:100 | 100:100 | 100:10 | 100:10 | 100:10 | 100:10 |
Gel time at 23°C | GB/T 10247-2008 | 3000±1000 | 5000±1000 | 3000±1000 | 3000±1000 | 5000±1000 | 1000 |
Thermal conductivity W/(m.K) | 10297- 1998 | 0.75 | 1.5 | 0.3 | 0.4 | .0.3 | 0.3 |



