3D Ceramic Printing
QPAC® binders are emerging as a temporary adhesive additive for paste extruder based 3D ceramic printers. Selective laser sintering, SLS 3D printing technology is one type of additive manufacturing technique that can benefit from QPAC®’s debinding properties
- Upon decomposition, QPAC® leaves virtually no residue or contamination.
- QPAC® produces benign emissions; products of combustions are carbon dioxide and water vapor, which are non-toxic, non-flammable, and environmentally safe.
- Low temperature burnout for sensitive materials. QPAC® decomposes completely between 220°C and 350°C, which can be as much as 100°C below the decomposition temperatures of other binders.
- QPAC® provides excellent green strength and results in high strength and density in final products.
Energy Storage / Batteries
QPAC®25 polyethylene carbonate and QPAC®40 polypropylene carbonate are both being investigated as polymer candidates for electrolytes. Carbonate based solvents are usually used as the electrolyte solution in Li-ion batteries because of their high dielectric constant. Therefore the carbonate groups of QPAC®25 and QPAC®40 provides a good structure for the polymer framework. QPAC® may have additional benefits in the construction of fuel cells. Recent work shows QPAC® polyalkylene carbonates can form a high performing polymer matrix for the electrolyte in solid lithium ion batteries.
Read more about QPAC for flexible solid lithium batteries
The growing interest in QPAC® as an organic nanoparticle binder can be attributed to the following properties:
- QPAC® is compatible with a variety of nano powders including metals and ceramics.
- Both QPAC®25 polyethylene carbonate and QPAC®40 polypropylene carbonate are 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 burnout of carbon.
- QPAC® decomposes completely between 220°C to 350°C which can be as much as or more than 100°C below the decomposition temperature of other binders.
- QPAC® binders are also unique in that they burn out mild, without violent gas formation. Thus, whether the process operates in an oxidizing, reducing or inert atmosphere, there is less cracking in the part.
These properties result in structures with superior properties compared to structures prepared with more conventional binders. Additionally, QPAC®40 polypropylene carbonate and QPAC®25 polyethylene carbonate use up to 50% less petrochemicals than traditional plastics.
Other new and exciting areas where QPAC® polyalkylene carbonates are being used include freeze casting and as an adhesive for semiconductor wafers.