Thermal Conductive Polyurethane Potting Compound (1.3W)
JOMP 2651A/B is a two-component room-temperature or thermosetting elastomer resin composite material, suitable for two-component sealing and potting applications. The cured samples exhibit excellent flexibility and high thermal conductivity. It is widely used in the potting and encapsulation processes of communication equipment, transformers, control power supplies, ignition controllers, and electronic sensors.
Low viscosity, operable
Excellent low temperature characteristics, excellent weather resistance
High thermal conductivity index up to 1.3W/m.K
Excellent electrical insulation and stability
Good adhesion to most metals and plastics
product details
Thermal Conductive Polyurethane Potting Compound
Product features and uses
JOMP 2651A/B is a two-component solvent-free room temperature or heat-curable resin elastomer compound for dual-component sealing and potting applications. This environmentally friendly material, free from heavy metals, offers versatile processability with superior physical properties and excellent substrate adhesion. Capable of curing at both room temperature and under heat, it achieves deep penetration and solidification. The mixture demonstrates exceptional flow characteristics during mixing, while cured specimens exhibit remarkable flexibility and high thermal conductivity. It is widely used in potting and encapsulation processes for communication equipment, transformers, control power supplies, ignition controllers, and electronic sensors.
Suitable for potting of various components
TWO COMPONENT, Low VISCOSITY
Low viscosity, operable
Excellent low temperature characteristics, excellent weather resistance
High thermal conductivity index up to 1.3W/m.K
Excellent electrical insulation and stability
Good adhesion to most metals and plastics
Conventional performance
| test item | Units and conditions | criterion of detection | A / B | |
| surface | A
B |
visualization | visualization | Black/white viscous fluid |
| visualization | visualization | Brownish liquid | ||
|
dynamic viscosity |
A
B A+B |
25℃, mPa·s | GB/T 10247-2008 | 20,000± 10,000 |
| 25℃, mPa·s | GB/T 10247-2008 | 35±10 | ||
| 25℃, mPa·s | GB/T 10247-2008 | 2,000±800 | ||
|
density |
A
B A+B |
25℃, g/cm3 | GB/T 15223-1994 | 1.80±0.05 |
| 25℃, g/cm3 | GB/T 15223-1994 | 1.23±0.05 | ||
| 25℃, g/cm3 | GB/T 15223-1994 | 1.75±0.05 | ||
| Operational time | 25℃ min 150g
Viscosity to 100000mPa·s |
GB/T 10247-2008 | 60~120 | |
| Gel time | 25℃ hrs 150g | GB/T 10247-2008 | 4~8 | |
| matching | proportion by weight | —- | A :B=100 :10 | |
| condition of cure | ℃/h | —- | 25℃/ 72 h or 70℃/3h | |
|
Characteristics after curing |
||||
| project | Units or conditions | criterion of detection | JOMP2651 | |
| pigment | visualization | visualization | Black or white | |
| hardness | Shore D | GB/T 531-2008 | 45±5 | |
| water absorption | 24hrs, 25℃ , % | GB 8810-2005 | <0.2 | |
| tensile strength | MPa | GB/T 528-2009 | 7.0 | |
| elongation | % | GB/T 528-2009 | 50 | |
| shear strength | MPa, Fe-Fe | GB/T 6328-86 | 1.5 | |
| shear strength | MPa, Al-Al | GB/T 6328-86 | 1.5 | |
| Suitable for potting of various components | |||
| thermal conductivity | W/m.K | GB/T10297-1998 | 1.30 |
| Glass transition temperature Tg | ℃ | GBT 11998-1989 | 10 |
| mass resistivity | 25℃ , Ω·cm | GB/T 1692-92 | 1.5*1014 |
| insulation strength | 25℃ , kV/mm | GB/T 1695-2005 | 18 |
| dielectric constant | 50Hz ,25℃ | GB/T 1693-2007 | 4.50 |
| dielectric loss | 50Hz ,25℃ | GB/T 1693-2007 | 0.012 |
| line shrinkage | % | HGT 2625-1994 | 1.0 |
| linear thermal expansion | μm/( m ,℃ ) | GBT 20673-2006 | <Tg, 35
>Tg, 120 |
| Application temperature | ℃ | GBT 20028-2005 | -50~130 |
| Flame retardant rating | UL | UL94 | V-0 |
Order packing
JOMP 2651 A/B polyurethane potting compound,
Part A, packaged 32 kg/barrel,
Part B, package 3.2kg / pot
Storage temperature:
10-30℃, the storage period
of material A is 12 months; the storage period
of material B is 6 months.
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