Electronic Manufacturing
Novomer’s polypropylene carbonate (PPC), which under high temperature decomposes into environmentally benign products, can be used in a broad array of applications in the electronics, brazing and ceramics industries. Novomer’s sacrificial binders decompose more uniformly and at lower temperatures than currently available sacrificial binders. Due to the uniformity of our polymer structures and narrow molecular weight distributions, our sacrificial binders have very short burnout times and decompose without violent gas formation, appearing as if they were subliming. Another significant performance attribute is the extremely low ash residue left after decomposing. For material handling purposes, our PPC binders dissolve in many common, inexpensive solvents with the ability to tailor a broad range of viscosities to meet specific application requirements.
NB-180
NB-180 is a sacrificial material that has been used in the precise assembly of micro and nano-scale devices. Use of NB-180 will result in decreased residues and defect rates as well as increase precision and strength during the sintering processes.
TGA of Novomer Binder
illustrating tunable decomposition temperatures
Figure: High molecular weight PPC is well suited as a solution for
electronic manufacturing
Typical NB-180 Properties
Ash Residue: Less than 10 ppm ash by ASTM D482 and less than 1 ppm metals/ions by ICP-OES/ICP-MS
Molecular weight (solution viscosity):
5,000 to 300,000 g/mol
Decomposition temperature (Td):
180 to 240 °C
Glass transition temperature (Tg):
-10 to 120 °C
Soluble in a variety of
organic solvents:
Acetone
Dichloroethane
Methyl acetate
Propionitrile
Acetonitrile
Dioxane
Methyl propasol acetate
Propylene carboante
Benzene
Diglyme
Methylene chloride
Propylene oxide
Dimethylsulfoxide
Methyl ethyl ketone
Styrene
Cellosolve Acetate
Dimethylformamide
N-Methyl-2-pyrrolidone
Tetrahydrofuran
Chloroform
Ethyl acetate
n-Propyl acetate
Vinyl acetate
High Molecular Weight PPC used as a sacrificial binder for silicon chip manufacturing