Organic Processing Binders for the Electronics Industry

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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.

QPAC® Organic Binders - Ideally Suited to the Electronic Industry

QPAC® organic binders are ideally suited to electronic applications as a processing/organic/casrificial binder for ceramic, metal and cermet powders. This includes pressing, sintering and injection molding operations to fabricate tapes, electronic pastes and parts.

The Benefits of Using QPAC25® and QPAC40® Organic Binders

The benefits of using QPAC25® and QPAC40® organic binders includes the following:

  • Decomposition at low temperature. QPAC® decomposes completely between 220°C - 340°C, which can be 100°C or more below the decomposition temperatures of other binders.
  • Decomposition can occur in a wide range of atmospheres including air, oxygen, nitrogen, hydrogen, argon and vacuum.
  • Upon decomposition, QPAC® leaves less than10 ppm ash residue with the complete burn-out of carbon.
  • QPAC® is soluble in many common solvents.
  • The controlled polymer debinding process allows for improved part structure and pore size management.
  • The use of QPAC® as a binders allow for parts with excellent green strength and density.
  • QPAC® has excellent film-forming and coating capabilities.

QPAC® has superior binder burn-off characteristics compared to other materials. With the trend toward miniaturization of electronic components, these features are more important than ever.

Available Product Forms of QPAC25® and QPAC40® Organic Binders

The QPAC25® and QPAC40® organic binders are available in various forms such as:

  • Powder
  • Pellets
  • Granulates
  • Solution
  • Aqueous Emulsion

Properties of QPAC25 and QPAC40 Organic Binders

The properties of QPAC25® and QPAC40® are outlined in the following table.

QPAC®25 - PEC - polyethylene carbonate

Density

1.42

Chemical formula

[CH2CH2OCO2]n or C3H4O3

Tensile strength

500 - 1,500 psi

Solvents

Methylene chloride, Chloroform, and 1,2-Dichloroethane

Tg

25°C

QPAC®40 - PPC - polypropylene carbonate

Density

1.26

Chemical formula

[CHCH3CH2OCO2]n or C4H6O3

Tensile strength

5,000 - 6,000 psi

Solvents

Methylene chloride, MEK, Acetone & Propylene carbonate

Tg

40°C

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

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

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