BS-2000 Series | Silyl Modified Polymers (SMP)

Main features

High Temperature Gap Filler
Silicone-Free & Silyl Modified Polymer (SMP) Chemistry
Stable thermal performance during Aging test

Product Description

BS-2000 is a high-performance, silicone-free, dual-component gap filler specifically designed for efficient thermal management in electronics and automotive applications. BS-2000 is ideal for filling and leveling gaps between heat-generating components and cooling plates, ensuring optimal heat dissipation and enhancing the longevity and reliability of your devices.

BS-2000 features SMP (Silyl Modified Polymer) chemistry, which significantly enhances adhesion throughout its entire service life. Unlike silicones or polyurethanes (PUs), the thermal resistance of this material improves over time, allowing for the use of lower initial thermal conductivity values without compromising long-term performance. This ensures consistent and reliable thermal management, making it an ideal choice for reliability demanding applications.

Specifications
Additional Information

Technical Specifications

General Properties

Chemistry Type

SMP

Density (g)

2.45 g/cm3

Filler Content

Non-abrasive ceramic filler %

Mix Ratio

Mix Ratio
The amount of a constituent divided by the total amount of all other constituents in a mixture

10:1

Pot Life

Pot Life
Pot life is the amount of time it takes for the viscosity of a material to double (or quadruple for lower viscosity materials) in room temperature after a material is mixed.

It is closely related to work life but it is not application dependent, less precise and more of a general indication of how fast a system is going to cure.

0.5 hours

Physical Properties

Viscosity

Viscosity
Viscosity is a measurement of a fluid’s resistance to flow.

Viscosity is commonly measured in centiPoise (cP). One cP is defined as
the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP.

A product like honey would have a much higher viscosity -around 10,000 cPs-
compared to water. As a result, honey would flow much slower out of a tipped glass than
water would.

The viscosity of a material can be decreased with an increase in temperature in
order to better suit an application

0.000130 mPa.s

Electrical Properties

Dielectric Strength

Dielectric Strength
Dielectric strength is measured in kV per mm and is calculated by the Breakdown voltage divided by the thickness of the tested material.

Those two properties go hand in hand and while Breakdown voltage is always thickness dependent, dielectric strength is a general material property.

As an example, the dielectric strength of Polyimide is 236 kV/mm. If we place 1mm of Polyimide between two electrodes, it will act as an insulator until the voltage between the electrodes reaches 236 kV. At this point it will start acting as a good conductor, causing sparks, potential punctures and current flow.

≥10 kV/mm

Volume Resistivity

Volume Resistivity
Volume resistivity, also called volume resistance, bulk resistance or bulk resistivity is a thickness dependent measurement of the resistivity of a material perpendicular to the plane of the surface.

1.0x10¹¹ Ohms⋅cm

Mechanical Properties

Hardness Hardness Hardness is a dimensionless quantity. There is no direct relationship between measurements in one scale and their equivalent in another scale or another hardness test.
Durometer (Shore A)	80

Elongation

Elongation
Elongation is the process of lengthening something.

It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks.

It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.

9.2 %

Shear strength
Shear Strength	1.6 N/mm2

Tensile Strength

Tensile Strength
The tensile strength of a material is the maximum amount of tensile stress that it can withstand while being stretched or pulled before failure.

Some materials break very sharply, without plastic deformation, in what is called a brittle failure. Others, which are more ductile, including most metals, experience some plastic deformation and possibly necking before fracture.

Tensile Strength

Tensile Strength
Tensile strength determines the resistance of a material to break under tension and it measures how much elongating load (or tensile stress) it can handle before fracture.

To make it simple, it measures how much force we have to apply when pulling apart a material before it breaks.

1.15 MPa

Thermal Properties

Operating Temperature

150 °C

Thermal Conductivity

Thermal Conductivity
Thermal conductivity describes the ability of a material to conduct heat. It is required by power packages in order to dissipate heat and maintain stable electrical performance.

Thermal conductivity units are [W/(m K)] in the SI system and [Btu/(hr ft °F)] in the Imperial system.

≥ 2.0 W/m.K

Additional Information

Simple processing using dispensing equipment customized cartridges.
Ease of automation process
Processing at elevated temperature (60 ℃) decreases viscosity which enables excellent dispensing properties
The material can be removed in a non-crosslinked state by simple wiping, and with commercially available solvent/cleaners
Crosslinking occurs 24h after mixing.