Thermal Conductive potting Silicone Compound(1.5W)

FEATURES

JOMS 5230-15 is a two-part addition cure RTV. Comparing to condensation cure system, JOMS 5230-15 has

following features:

.   long potting life, But rapidly cured under heat.

.   Contain all the ingredients needed for cure with no by-products from the cure mechanism. Deep-section or confined cures are possible.

.   Require no post-cure

.     Two-part, 1:1 mixing ratio

.     Medium viscosity Room temperature cure or rapid heat cure

.     Addition cure system: no cure by-products

.     Flame retardant: meets Underwriters Laboratories

.     Stable and flexible from -60°C(-76°F) to +200°C (392°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)				Black /white
Viscosity at 23°C (Part A/Part B)¹	10247-2008	D1084	mPa.s	4500±1000/ 4000±1000
Specific gravity at 23°C (Part A/Part B)	13354-92	D792	g/cm3	2.20/ 2.20
Catalysed, Mixed 1:1 by weight
Potting life at 23°C	10247-2008	D1084	mins	40±10
Gel time at 23°C	10247-2008	D1084	mins	100-150
Cure time at 80°C, 70°C			minutes	30, 50
Cure time at 23°C			Hour	6hr
Physical properties, cured 30 minutes at 150°C
Colour				Gray
Specific gravity at 23°C	13354-92	D792	g/cm3	2.20
Durometer hardness	531.1-2008	D2240	Shore A	25±5
Tensile strength	6328-86	D412	MPa	0.6
Elongation at break	6328-86	D412	%	40
Tear strength- die B	6328-86	D624	kN/m	0.15
Thermal conductivity	10297-1998	D2214	W/(m.K)	1.50±0.10
Volume coefficient of thermal expansion	20673-2006		ppm	130
Electrical properties, cured 30 minutes at 150°C
Dielectric strength, 2mm thickness	1693-2007	D149	kV/mm	≥20
Permittivity at 100Hz/100kHz	1693-2007	D150		4.80
Dissipation factor at 100Hz/100kHz	1693-2007	D150		0.01
Volume resistivity	1692-92	D257	Ohm.cm	1.1×10¹4

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 JOMS 5060 series, following the instructions and precautions given for use of these products.

Mixing

.     JOMS 5230-15 is supplied in lot matched kits

consisting of Part A and Part B in separate

containers. During long periods of storage,

some of the filler may settle at the bottom of the

containers and should be individually

homogenised prior to use.

How to apply

.     The two components should be thoroughly

mixed using a weight ratio of 1:1 until the

mixture has a uniform colour. Vacuum de-airing is recommended. A residual pressure of 10-20  mm mercury applied for 5-10 minutes will sufficiently de-air the material.

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 5230-15 should be cured using one of the following recommended schedules:

6-8 hours at 23°C, or 50-60 minutes at 70°C, or 20-30 minutes at 100°C, or 10-15 minutes at 150°C. Large components and assemblies may require longer times in order to reach the curing temperature.

Compatibility

In some cases, JOMS 5230-15 may fail to cure to optimum properties when in contact with certain plastics or rubbers. Cleaning the substrate with solvent or baking slightly above the cure temperature will normally  eliminate the problem. Certain chemicals, curing agents and plasticisers can inhibit cure. These include:

– Organotin compounds

– Silicone rubber containing organotin catalysts

– Sulphur, polysulphides, polysulphones and other sulphur containing materials

– Amines, urethanes, amides and azides.

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 5230-15 is available in standard industrial container sizes. Other size should be approved.

.     Part A: code 0105466, 15kg/pail;    Part B: code 0105467, 15kg/pail.