Technical Data Sheet
BERGQUIST GAP FILLER TGF 4500CVO
November -2020
PRODUCT DESCRIPTION
BERGQUIST GAP FILLER TGF 4500CVO provides the
following product characteristics:
Technology 2K Silicone
Appearance (Part A) White
Appearance (Part B) Pink
Appearance (cured) Pink
Components Two components - requires mixing
Mix Ratio by weight:
Part A: Part B
1 : 1
Mix Ratio by volume:
Part A: Part B
1 : 1
Product Benefits ● Thermal conductivity: 4.5 W/mK
● Extended working time for
manufacturing flexibility
● Controlled Volatile Silicones
● High dispense throughput
● Optimized viscosity for
automated dispensing
processes
Cure Room temperature or heat cure
Operating Temperature -60 to 200ºC
Application Thermal material, Liquid gap filler
Typical Applications ● Power inverter
● Surface mount power switching
● EV charger
● Use between heat generating
semiconductor packages and
heat sink
BERGQUIST GAP FILLER TGF 4500CVO is a two-part, high
performance, thermally conductive, liquid gap filling material.
The mixed material will cure at room temperature. Cure can be
accelerated with the addition of heat.
BERGQUIST GAP FILLER TGF 4500CVO has controlled
volatile outgassing silicones for sensitive applications and high
dispensing rate in customer application. This liquid-dispensed
material offers infinite thickness variation and impart little and
reduced stress on components during assembly. As cured,
BERGQUIST GAP FILLER TGF 4500CVO offers a soft,
thermally conductive, form-in-place elastomer to fill voids and
gaps in the customer assembly.
TYPICAL PROPERTIES OF UNCURED MATERIAL
Part A Properties
Viscosity, mPa∙s (cP):
High shear rate, 1,500 s
-1
, ASTM D5099
20,000
Low shear rate, 1.0 s
-1
, DIN 53019
522,000
Shelf Life @ 25°C, days 180
Part B Properties
Viscosity, mPa∙s (cP):
High shear rate, 1,500 s
-1
, ASTM D5099
11,000
Low shear rate, 1.0 s
-1
, DIN 53019
361,000
Shelf Life @ 25°C, days 180
Mixed Properties
Density, ASTM D792, g/cc 3.2
Work Life, ASTM D4473:
@ 25°C, hours 21
@ 50°C, minutes 60
@ 85°C, minutes 3
_______________________________________________________________________________________________________
TDS BERGQUIST GAP FILLER TGF 4500CVO, November -2020
TYPICAL CURING PERFORMANCE
Cure Schedule (Room Temperature cure)
48 hours @ 25°C
Alternate Cure Schedule
4 hours @ 50°C or
30 minutes @ 85°C
The above cure profile(s) are guideline recommendation(s).
These conditions (time and temperature) may vary based on
customers’ experience and specific application requirements,
as well as customer curing equipment, oven loading and
actual oven temperatures.
TYPICAL PROPERTIES OF CURED MATERIAL
Physical Properties
Hardness, Shore 00, ASTM D2240 70
Heat Capacity, ASTM E1269, J/g-K 0.8
Siloxane Content, ΣD4-D10 , ASTM F2466, ppm <300
Flammability, UL 94 V-0
Electrical Properties
Volume Resistivity, ASTM D257, ohm-m 1×10
11
Dielectric Strength, ASTM D149, V/mm 10,000
Dielectric Constant , ASTM D150 @ 1,000 Hz 8.1
Thermal Properties
Thermal Conductivity, ASTM D5470, W/(m-K) 4.5
Thermal Impedance @ 40 mil, ºC-in
2
/W:
10% Deflection 0.45
20% Deflection 0.38
30% Deflection 0.32
GENERAL INFORMATION
Please consult the Safety Data Sheet (SDS) for safe
handling information of this product.
This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected as
a sealant for chlorine or other strong oxidizing materials.
CONFIGURATIONS AVAILABLE
Cartridges Kits 50cc, 200cc, 400cc, 1,200cc
Pail Kits 6 gallons
Not for product specifications
The technical data contained herein are intended as reference
only. Please contact your local quality department for
assistance and recommendations on specifications for this
product.
Storage
Store product in the unopened container in a dry location.
Storage information may be indicated on the product container
labeling.
Optimal Storage: 25°C. Storage above 25°C can adversely
affect product properties.
Material removed from containers may be contaminated during
use. Do not return product to the original container. Henkel
Corporation cannot assume responsibility for product which
has been contaminated or stored under conditions other than
those previously indicated. If additional information is required,
please contact your local Henkel Representative.
Conversions
(°C x 1.8) + 32 = °F
kV/mm x 25.4 = V/mil
mm / 25.4 = inches
N x 0.225 = lb/F
N/mm x 5.71 = lb/in
psi x 145 = N/mm²
MPa = N/mm²
N·m x 8.851 = lb·in
N·m x 0.738 = lb·ft
N·mm x 0.142 = oz·in
mPa·s = cP
For the most direct access to local sales and technical support visit: https://www.henkel-adhesives.com/