1 4

Description

Polytec PT offers a range of thermally conductive adhesives for technology applications. The products are two-part and single-part epoxy systems designed for all applications where heat transfer is essential, including heat-sinking and ceramic packaging.

“With Polytec we have about three times the pot life we had before, and the bubbles rise to the top so we can pretty much do what we want with it. Polytec TC 437 is now our preferred material” – Ben Moffat, Variohm

Polytec Thermally Conductive table

 

Features & Benefits

  • Excellent thermal conductivity – up to 4W/mK
  • Both ambient and thermal cure options
  • Process convenient packaging, including twin-packs and premixed and frozen syringes
  • Can bond difficult combinations of materials such as copper and aluminum
  • Gap-filling
  • Thermally conductive over large areas
  • Resistant to most process media such as water, oil or gas

Applications

  • Heat dissipation
  • Chip bonding
  • Heat sink bonding
  • Power semiconductors
  • Electronics
  • Opto-electronics
  • Hybrid microelectronics
  • Automotive
  • Potting sensors and thermistors
  • Heat exchangers
  • Battery cells

Selector Guide

Product Name Features Application
Polytec TC 301 · Number of components: 1
· Temperature range: -55 to +180°C
· Colour: grey
· Thermal conductivity (W.m-1.K-1): 1.9
· Consistency: creamy paste
Polytec TC 301 is a standard single component, thermally conductive epoxy with excellent thermal conductivity. It was designed for all applications where heat transfer is essential (heat-sinking, aluminum or ceramic packaging).
Polytec TC 301 has a conveniently long pot and shelf life. It is ideal for all dispensing and screen applications. It has an excellent adhesion on metals, ceramic, glass and most plastics.
Polytec PT TC 301 Thermally Conductive Adhesive
Polytec TC 304 · Number of components: 1
· Temperature range: -55 to +180°C
· Colour: metal grey
· Thermal conductivity (W.m-1.K-1): 1.4
· Consistency: creamy paste
Polytec TC 304 is a single component, thermally conductive epoxy with excellent thermal conductivity. It was designed for all applications where heat transfer is essential (heat-sinking, aluminum or ceramic packaging etc.). Polytec TC 304 has a convenient long pot and shelf life. It is ideal for all dispensing and screen printing applications. Polytec TC 304 has an excellent adhesion to metals (e.g. aluminum, copper, brass), ceramic, glass and most plastics. Polytec PT TC 304 Thermally Conductive Adhesive
Polytec TC 351 · Number of components: 1
· Temperature range: -55 to +200°C
· Colour: black
· Thermal conductivity (W.m-1.K-1): 0.8
· Consistency: creamy paste
Polytec TC 351 is a single component, thermally conductive epoxy with good thermal conductivity. It was designed for all applications where electrically insulating and thermally conductive bonds are desirable.
Polytec TC 351 has a conveniently long pot and shelf life which is ideal for high volume dispensing techniques. Typical applications are bonding of sensors in metal holders and fixation of single devices on PCBs.
Polytec TC 351 thermally conductive adhesive
Polytec TC 417 · Number of components: 2
· Mix ratio by weight: 100:13
· Temperature range: -55 to +180°C
· Colour: black
· Thermal conductivity (W.m-1.K-1): 0.80
· Consistency: flowable paste
Polytec TC 417 is a two component, thermally conductive, electrically insulating epoxy. It is used in various thermal management applications, like potting of large volumes. It has an excellent chemical and moisture resistance. It has an excellent adhesion to glass, metal, ceramic, FR4 and most plastics. The room temperature cure allows bonding of temperature sensitive substrates very conveniently. Polytec TC 417 thermally conductive adhesive
Polytec TC 423 · Number of components: 2
· Mix ratio by weight: 100:1.7
· Temperature range: -55 to +260°C
· Colour: blue
· Thermal conductivity (W.m-1.K-1): 3.0
· Consistency: tough-flowing paste
Polytec TC 423 is a pasty, two component, highly thermally conductive, electrically insulating epoxy adhesive curing at room temperature. It has an excellent adhesion to glass, metal, ceramic, FR4 and most plastics.
Polytec TC 423 is used in various thermal management applications, especially for potting of large volumes in electrical and power engineering.
Polytec PT TC 423 Thermally Conductive Adhesive
Polytec TC 430 · Number of components: 2
· Mix ratio by weight: 100:4
· Temperature range: -55 to +250°C
· Colour: yellow
· Thermal conductivity (W.m-1.K-1): 0.7
· Consistency: thixotropic paste
Polytec TC 430 is a two-component, thermally conductive, electrically insulating epoxy. It is suggested for applications where heat dissipation and insulating properties are required. Typical applications include attaching heat sinks, die attach, die bonding power devices and thermally conductive underfill.
Polytec TC 430 has an excellent adhesion to ceramic, glass, semiconductor materials, ferrous and non-ferrous metals and most plastics.
Also available pre-mixed, frozen, bubble-free and thixotropic and non-flowing version.
Polytec TC 430 thermally conductive adhesive
Polytec TC 432 · Number of components: 2
· Mix ratio by weight: 100:7
· Thermal conductivity (W.m-1.K-1): 1.8
· Colour: white/white
· Consistency: thixotropic paste
Polytec TC 432 is a thixotropic, two component, highly thermally conductive, electrically insulating epoxy for thermal management in micro and power electronics, energy engineering etc. It has an excellent adhesion to ceramic, glass, semiconductor materials, ferrous and non-ferrous metals and most plastics. Polytec PT TC 432 Thermally Conductive Adhesive
Polytec TC 433 · Number of components: 2
· Mix ratio by weight: 100:5
· Thermal conductivity (W.m-1.K-1): 2.0
· Colour: white/brown
· Consistency: thixotropic paste
Polytec TC 433 is a thixotropic, two component, highly thermally conductive, electrically insulating epoxy for thermal management in micro and power electronics, energy engineering etc. It has an excellent adhesion to ceramic, glass, semiconductor materials, ferrous and non-ferrous metals and most plastics. Polytec TC 433 thermally conductive adhesive
Polytec TC 437 · Number of components: 2
· Mix ratio by weight: 10:1
· Thermal conductivity (W.m-1.K-1): 0.6
· Colour: white/yellow
· Consistency: thixotropic paste
Polytec TC 437 is a two-component, thermally conductive electrically insulating epoxy which can be cured at room temperature within 16 hours. Typically applications include attaching heat sinks, thermally conductive underfill, thermistor potting, die attach and heat management for power semiconductor devices. Excellent adhesion to ceramic, glass, semiconductor materials, metals and most plastics. Polytec PT TC 437 Thermally Conductive Adhesive
Polytec TC 451 · Number of components: 2
· Mix ratio by weight: 100:6
· Temperature range: -55 to +180°C
· Colour: black
· Thermal conductivity (W.m-1.K-1): 0.80
· Consistency: flowable soft paste
Polytec TC 451 is a thermally conductive, electrically insulating adhesive and potting system with high glass transition temperature. It is used in various applications for bonding, potting, coating and sealing in the automotive and electronics industry.
Polytec TC 451 shows an excellent resistance to chemicals and moisture and has a good adhesion to glass, metal, ceramic, ferrite and most plastics.
Polytec TC 451 thermally conductive adhesive

Other Information

See how Polytec TC 437 works as part of a real application in this Potting Compound Case Study:

Case Study Polytec TC 437 Variohm web We pot the green for Variohm with custom thermal potting compound

Potting compound requiring good thermal conductivity and an extended pot life in a custom made colour.

All Downloads

Filename Size Download
Polytec Thermally Conductive Adhesives Brochure 0.37MB
Polytec Thermally Conductive Materials for Electric and Hybrid Vehicle Batteries 0.42MB
We pot the green for Variohm with custom thermal potting compound 1.21MB
Polytec Adhesives Selector Guide 1.46MB
  • Last updated: June 2018
  • Version: 4.0

Statements, technical information and recommendations contained herein are based on tests we believe to be reliable but they are not to be construed in any manner as warrantees expressed or implied. The user shall determine the suitability of the product for his intended use and the user assumes all risk and liability whatsoever in connection therewith.