10:1 Condensation type high bonding strength silicone potting compound

JOMS 3150B is a two-part Condensed cure RTV. Comparing to addition cure system, JOMS 3150B has following features:
.   Stable operating process and potting time
.   Could reduce or improve the curing time by modified the mix ratio
.   Will not suffer catalyst poisoning
.   Two-part, 10:1 mixing ratio
APPLICATIONS
.    Designed to protect against moisture, environmental attack, mechanical and thermal shock as well as vibration especially where good adhesion is required.
.    Typical applications include: encapsulation of amplifiers, automotive electronic units, ballast, bleed
resistors, connectors, flyback transformers, high voltage resistor packs, lifting magnets, power controllers, power supplies, radio frequency induction transformers and sensing devices.

product details

FEATURES

JOMS 3150B is a two-part Condensed cure RTV. Comparing to addition cure system, JOMS 3150B has following features:

. Stable operating process and potting time

. Could reduce or improve the curing time by modified the mix ratio

. Will not suffer catalyst poisoning

. Two-part, 10:1 mixing ratio

. Medium viscosity Room temperature cure

. Condensation cure system: Methanol by-products

. Flame retardant: meets Underwriters Laboratories

. Stable and flexible from -50°C(58°F) to +250°C (432°F)

. Flexible rubber – protects against mechanical shock and thermal cycling stress at components

. Excellent dielectric properties

APPLICATIONS

. Designed to protect against moisture, environmental attack, mechanical and thermal shock as well as vibration especially where good adhesion is required.

. Typical applications include: encapsulation of amplifiers, automotive electronic units, ballast, bleed

resistors, connectors, flyback transformers, high voltage resistor packs, lifting magnets, power controllers, power supplies, radio frequency induction transformers and sensing devices.

TYPICAL PROPERTIES

Specification writers: These values are not intended for use in preparing specifications.

Please contact your local Jome sales representative prior to writing specifications on this product.

Property	GB/T	ASTM	Unit	Value A/B
Colour (Part A/Part B)				White or Black
Viscosity at 23°C (Part A/Part B)¹	10247-2008	D1084	mPa.s	2000~2500/ 5~10
Specific gravity at 23°C (Part A/Part B)	13354-92	D792	g/cm3	1.26/0.99
Catalysed, Mixed 10:1 by weight
Potting life at 23°C	10247-2008	D1084	mins	30±10
Gel time at 23°C	10247-2008	D1084	Hour	1
Cure time at 23°C			Hour	12
Physical properties, cured 7days at RT
Colour				Black or White
Specific gravity at 23°C	13354-92	D792	g/cm3	1.26
Durometer hardness	531.1-2008	D2240	Shore A	40±5
Tensile strength	6328-86	D412	MPa	1.5
Elongation at break	6328-86	D412	%	120
Shear strength	6328-86	D624	kN/m	0.8
Thermal conductivity	10297- 1998	D2214	W/(m.K)	0.38
Volume coefficient of thermal expansion	20673-2006		ppm	200
Electrical properties, cured 7days at RT
Dielectric strength, 2mm thickness	1693-2007	D149	kV/mm	20
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	1.1×10¹4

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 3150B is available in standard industrial container sizes. Other size should be approved.

. Part A: 20kg/pail ; Part B: 2kg/pot. 22kg/group

HOW TO USE

Substrate preparation

All surfaces should be cleaned and degreased with a suitable solvent prior to potting. Care should be taken to ensure that all solvent is removed. For best adhesion, coat surfaces with PM 1200, following the

instructions and precautions given for use of these products.

Mixing

. JOMS 3150B is supplied in lot matched kits . The two components should be thoroughly

consisting of Part A and Part B in separate mixed using a weight ratio of 10:1 until the

containers. During long periods of storage, mixture has a uniform colour. Vacuum de-airing some of the filler may settle at the bottom of the is recommended. A residual pressure of 10-20 containers and should be individually mm mercury applied for 5- 10 minutes will

homogenised prior to use. sufficiently de-air the material.

How to apply

Being careful to avoid air entrapment, apply the encapsulant. Vacuum encapsulation is recommended for complex geometries. For information on appropriate dispensing equipment for your application, please

contact JOME marketing department.

Curing

JOMS 3150B should be cured using one of the following recommended schedules:

3 hours at 23°C cured the surface.

12 hours at 23°C cured 3cm thickness.

Deeper components and assemblies may require longer times in order to reach the bottom cured.