Self-Bonding Compounds
 

SILCOTEC'S SELF-BONDING SILICONE COMPOUNDS

Product Information

Introduction:

The SilCoTec SCB system is an innovative approach to bonding high consistency silicone rubber (HCR) to various substrates.  This approach allows SilCoTec to customize its self-bonding compounds to bond to a specific substrate.  When using a SilCoTec self-bonding compound, improved bond strength combined with a more durable bond between the silicone rubber and the substrate are to be expected. All of the above is accomplished without the use of a prime coat.

Uses & Applications:

SilCoTec's self-bonding compounds work in applications that require silicone rubber to bond to a substrate.  Some of the substrates that can utilize SilCoTec's self-bonding compounds include the following:

Metals – Stainless Steel, Anodized Aluminum, Titanium, Chrome Plated Steel
Plastics – Radel, Udel, Ultem
Rubber – Neoprene Rubber, Silicone Rubber
Misc. Polymers – polycarbonates, PEEK

Advantages:

Some advantages of using a SilCoTec SCB System compound include:

  • The Bond Strength and Bond Durability of SilCoTec's SCB system are superior to  standard methods of bonding, including prime coating.  Lab data and field trials have all demonstrated SilCoTec's self-bonding compounds' ability to outperform other methods of bonding silicone to a substrate.
  • Eliminate inefficiencies and costs of prime coating. Possibility of eliminating post cure without sacrificing properties, Bond Strength, or Bond Durability
  • Customized compound that will fit an application based upon physical properties, processing characteristics, specification callouts, and a customer's specialized requirements.

Physical Properties of Self-Bonding Compounds:

Below is a table showing typical physical properties for several SilCoTec self-bonding compounds:

NPC, Addition Cured SilCoTec Self-Bonding Compounds - Physical Properties

40 Duro
50 Duro
70 Duro
Property
Result
Result
Result
Specific Gravity
1.13
1.14
1.17
Durometer
40.0
47.8
68.5
Tensile
1300
1100
1300
Elongation
900
700
700
100% Modulus
110
110
200
Tear B
150
150
200

Special Applications:

In addition to standard self-bonding compounds, SilCoTec can offer self-bonding compounds that are:

  • Addition cured, as opposed to peroxide cured
  • Have conductive properties, including high conductivity requirements for FDA & Medical applications

Requirements for Best Results:

For optimum results when using SilCoTec's self-bonding compounds, the following tips should be kept in mind:

  • The current shelf life for our one-component, self-bonding compound is set at 1 month.  If a longer shelf life is required, a two-component system can be developed that will allow for a shelf life of 6 months or longer.
  • SilCoTec's self-bonding compounds are not substrate specific.  As such, it is strongly recommended that the mold be Nickel-Teflon coated in order to prevent mold-sticking issues.

For further processing tips regarding SilCoTec's self-bonding compounds, a tip sheet is available from the contact information below.

Contact Information:

For further information or sample requests, please use the Contact Us link.

 

 

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