Organic Binders for Use in Brazing Pastes - QPAC®

Poly(alkylene carbonates) are synthesized through the polymerization of carbon dioxide and epoxides. The products of their combustion are carbon dioxide and water vapor, which are non-toxic, non-flammable, and environmentally safe. They burn cleanly in any environment, oxidizing or inert. They are colorless, amorphous thermoplastic polymers with low glass transition temperatures.

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QPAC Organic Binders for Brazing Applications

QPAC® is ideally suited for use as an organic binder in brazing pastes and solutions.

The Benefits of Using QPAC25 and QPAC40 Organic Binders

The benefits of using QPAC®25 and QPAC®40 organic binders include the following:

• QPAC® is compatible with a variety of filler metals.
• The viscosities and molecular weights of QPAC® can be custom-tailored for specific solution or paste requirements.
• Both grades of QPAC® is naturally “tacky” and their degrees of plasticity can be adjusted as necessary.
• Decomposition is complete through three phases: solid, liquid, and vapor.
• Upon decomposition, QPAC® leaves very low ash residue with the complete burn-out of carbon.
• QPAC® decomposes completely between 250°C - 300°C, which can be as much as 100°C below the decomposition temperatures of other binders.

Other QPAC25 and QPAC40 Organic Binder Applications

Applications of QPAC®25 and QPAC®40 organic binders includes:

• Diamond Powder Bonding
• High Energy Capacitors
• Air Bag Inflator Propellants
• Thick Film Inks
• Die Attach Adhesives
• Ceramic Fiber Processing

Properties of QPAC25 and QPAC40 Organic Binders

The properties of QPAC®25 and QPAC®40 organic binders are outlined in the following table.

This information has been sourced, reviewed and adapted from materials provided by Empower Materials.

For more information on this source, please visit Empower Materials.