Gap Filler

Gap Filler 4000

Features & Benefits

  • Thermal Conductivity: 4.0 W/m-K
  • Extended working time for manufacturing flexibility
  • Ultra-conforming with excellent wet-out
  • 100% solids - no cure by-products
  • Excellent low and high temperature chemical and mechanical stability

Description

Gap Filler 4000 is a two-part, high performance, thermally conductive, liquid gap filling material. The mixed material will cure at room temparature and can be accelerated with the addition of heat. Gap Filler 4000 offers an extended working time to allow greater flexibility in the customer's assembly process. Liquid dispensed thermal materials offer infinite thickness variations and impart little to no stress on sensitive components during assembly. Gap Filler 4000 exhibits low level natural tack characteristics and is intended for use in applications where a strong structural bond is not required. As cured, Gap Filler 4000 provides a soft, thermally conductive, form-in-place elastomer that is ideal for fragile assemblies or for filling unique and intricate air voids and gaps.

Typical Applications include

  • Automotive electronics
  • Computer and peripherals
  • Between any heat-generating semiconductor and a heat sink
  • Telecommunications

Properties

Typical properties of Gap Filler 4000
Properties Imperial Value Metric Value Test Method
Density (Bulk Rubber) (g/cc) 3.1 3.1 ASTM D792
Color / Part A Blue Blue Visual
Color / Part B White White Visual
Mix Ratio 1:1 1:1 ***
Shelf Life @ 25ºC (months) 5 5 ***
Viscosity / Part A, High Shear (Pa-s) 50 50 ASTM D5099
Viscosity, High Shear (Pa-s) (1) 50 50 ASTM D5099
Typical properties of Gap Filler 4000
Electrical Imperial Value Metric Value Test Method
Dielectric Constant (1000 Hz) 7.9 7.9 ASTM D150
Volume Resistivity (Ohm-meter) 10^10 10^10 ASTM D257
Flame Rating V-O V-O U.L. 94
Dielectric Strength (V/mil)/(V/mm) 450 450 ASTM D149
Dielectric Constant (1000 Hz) 450 450 ASTM D149
Typical properties of Gap Filler 4000
Thermal Imperial Value Metric Value Test Method
Thermal Conductivity (W/m-K) 4.0 4.0 ASTM D5470
Typical properties of Gap Filler 4000
Property as Cured Imperial Value Metric Value Test Method
Color Blue Blue Visual
Hardness (Shore 00) (2) 75 75 ASTM D2240
Heat Capacity (J/g-K) 0.8 0.8 ASTM D1269
Continuous Use Temp (°F) / (°C) -76 to 392 -60 to 200 ***
Typical properties of Gap Filler 4000
Deflection (% strain) 10 20 30
Thermal Impedance (°C-in2/W) 0.020" V-O V-O U.L. 94
Typical properties of Gap Filler 4000
Cure Schedule Imperial Value Metric Value Test Method
Cure @ 25ºC (min) (3) 24 24 ***
Cure @ 100ºC (min) (3) 30 30 ***
Working Time @ 25ºC (min) (3) 240 min (4 hrs) 240 min ( 4 hrs) ***
Typical properties of Gap Filler 4000
Electrical As Cured Imperial Value Metric Value Test Method
Dielectric Constant (1000 Hz) 450 450 ASTM D149
Volume Resistivity (Ohm-meter) 7.9 7.9 ASTM D150
Flame Rating 10^10 10^10 ASTM D257
  • (1) Capillary Viscosity, 1500/sec, Part A and Be measured seperately.

  • (2) Thirty second delay value Shore 00 hardness scale.

  • (3) Parallel plate rheometer, see reactivity application note.

Configurations

Configurations available

  • Supplied in catridge and kit form

Downloads

Data Sheet

Gap Filler

Data Sheet

Gap Filler 4000

RoHS Certificate

Gap Filler

RoHS Certificate

Gap Filler 4000

Halogen Testing Report

Gap Filler

Halogen Testing Report

Gap Filler 4000

Safety Data Sheet (SDS)

Gap Filler

Safety Data Sheet (SDS)

Gap Filler 4000
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