Homepage | Myers Consulting Services About Dr. Myers Services Offered Technology Portfolio Patents


Nanotechnology and Nanomaterials
  Chemical Mechanical Planarization (CMP) Slurries Containing Nano-abrasive Particles for Micro-electro-mechanical Systems (MEMS) Applications
  Field Emitters Based on Low-Cost Carbon Black or Carbon Black/Silica Nanoparticles or Diesel Exhaust in a Polymer Matrix
Specialty Coatings
  Corrosion Resistant Coatings for Turbomachinery
  Intumescent Fire Resistant Coatings
  Thermal Management Coatings/Formulations
Specialty Polymers
  Preceramic Polymers
  Inorganic-Organic Hybrid Polymers
  Electrically Conducting Polymers

 

Chemical Mechanical Planarization (CMP) Slurries Containing Nano-abrasive Particles for Micro-electro-mechanical Systems (MEMS) Applications
  • A high removal rate copper CMP slurry developed specifically for bulk copper removal for MEMS applications. This slurry provides a copper removal rate more than 6x that of iCue 5001 (a commercial copper CMP slurry used in IC applications).
  • A series of high removal rate oxide CMP slurries developed specifically for bulk silicon dioxide removal for MEMS applications. These slurries, having controllable and "tunable" removal rates, provide oxide removal rates of 1.5x to 3x that of Semi-Sperse 25 (a commercial colloidal fumed silica CMP slurry used in IC applications).
  • A series of CMP slurries developed specifically for controllable and "tunable" removal rates on polymeric substrates, especially polyimide substrates of the type commonly used in microelectronics applications. CMP removal rates, shown to be highly dependent upon polyimide structure/property characteristics, were demonstrated on both blanket and patterned wafers coated with various photosensitive and standard polyimides manufactured by HD Microsystems; polyimide product designations: PI-2525, PI-2611, HD-4000, HD-8000).


back to top
Field Emitters Based on Low-Cost Carbon Black or Carbon Black/Silica Nanoparticles or Diesel Exhaust in a Polymer Matrix
  • Inexpensive nanoparticles of carbon black (with optional fumed silica nanoparticles), dispersed in a polymeric matrix, result in electrically conducting films that exhibit field emission performance comparable to that shown by much more expensive carbon nanotubes. Ordinary diesel exhaust soot in a polymer binder also shows field emission performance comparable to that of carbon nanotubes. The carbon black/polymer or diesel exhaust/polymer formulations can be applied to various substrates by brushing, dipping, spin coating or spraying. After thermal cure, the resulting field emitter films are stable under ultra-high vacuum and at temperatures exceeding 450 C. Applications for these patent-pending emitters include: large area displays and billboards, sensors, microwave amplifiers and large-area x-ray sources. This emitter technology is based on the original ideas of Dr. Heinz H. Busta, with supporting technical contributions from Dr. Ron Myers. See US Patent Application: 20040198892


back to top

Corrosion Resistant Coatings for Turbomachinery
  • A patented series of environmentally compliant, chromate-free, corrosion-resistant coatings are currently used worldwide on power-generating and turbomachinery components. The SermeTel Process 2000 coatings are sacrificial aluminum-ceramic compositions consisting of aluminum powder dispersed in an aqueous, acidic binder. The sacrificial aluminum-ceramic basecoat is further sealed with a chemically inert, glassy ceramic topcoat, resulting in an aerodynamically smooth surface that resists corrosion and fouling. ASTM B117 salt fog testing of SermeTel Process 2000 coated at 50 microns on mild steel substrate, unscribed, shows > 2500 hours without substrate corrosion. SermeTel Process 2000 was recognized by the worldwide readership of "Aerospace Engineering" as being "one of the top ten best new products of 1998". Dr. Myers led the project team that developed the original SermeTel Process 2000 coating systems. See U.S. Patents: 6,368,394; 6,224,657; 6,074,464; 5,968,240.


back to top

Intumescent Fire Resistant Coatings
  • Low cost, non-halogenated, ammonium pentaborate (APB) is shown to be a highly effective intumescent flame retardant additive for various polymers. APB, at low levels(<10 phr) greatly enhances char formation and increases burn through resistance of polymer coatings. A 0.18 cm thick thermoplastic polyurethane coating (Estane 58202 black) containing 8-10 phr of APB provides 7-10 minutes of thermal protection to heat sensitive substrates when directly exposed to a 800 C propane torch flame. In comparison, the Estane 58202 black control, which is a UL 94 V-O rated polyurethane, provides less than 1 minute of burn-through resistance under identical propane torch testing. APB functions as a char-promoting, intumescent additive and also retards flaming drip and suppresses char afterglow.
  • Low melting, inorganic phosphate-sulfate glasses are shown to be inexpensive and highly effective, non-halogenated flame and smoke retardant additives for a variety of organic polymers. These patented glass/ceramic compositions, when added to polymers such as polyvinylchloride (PVC), plasticized PVC, polyurethanes, polyamides, polyolefins, polystyrene, and polyacrylonitriles, show increased oxygen index values, increased char formation and decreased smoke generation (relative to controls). The low melting glasses also exhibit a pronounced intumescent effect, especially in rigid PVC, polyamides and polyurethanes. The low melting glass additives strengthen the resulting carbon/glassy ceramic char, providing a highly effective thermal barrier. Synergistic effects are noted when the low melting glasses are combined with other flame retardants such as ammonium pentaborate. See U.S. Patent 4,544,695.


back to top

Thermal Management Coatings/Formulations
  • Silicone-based and silicone-free thermal grease formulations, with Tc > 2 W/mK, are used for heat dissipation in computers and electronic devices.

back to top

Preceramic Polymers
  • Prepared via controlled hydrolytic polycondensation of cyclic silazanes, these liquid polysilazoxanes provide high yields of Si-C-O-N ceramic compositions. The preceramic polymers are useful as composite preform impregnants and densification resins as well as matrix resins and can be combined with refractory particulates or fibers to prepare high temperature composites. The preceramic polymers are especially useful as impregnants and densification resins for carbon/carbon composites and ceramic matrix composites. These preceramic polymers show TGA ceramic char yields of 75% to 85% at 1500 C in air or inert atmosphere. See U.S. Patents 5,256,487 and 5,136,007.
  • Silazane-modified phenolic resins are prepared by reacting cyclic silazanes with phenolic resins, such as SC-1008 phenolic. The resulting inorganic-organic polymer exhibits thermal stability substantially greater than that of an unmodified phenolic. The unmodified phenolic control shows a TGA char yield of only 43 weight % at 1500 C/inert atmosphere, while the silazane-modified phenolic has char yields of 70-85 weight % under identical TGA pyrolysis conditions. In addition, the char derived from the unmodified phenolic consists primarily of carbon, while the silazane-modified phenolic generates a thermo-oxidatively stable ceramic/carbon char. These inorganic-organic polymers are useful as: high temperature adhesives and laminating resins, ablative coatings, and matrix resins for high temperature composites such as carbon/carbon composites. See U.S. patent 5,089,552.

back to top

Inorganic-Organic Hybrid Polymers
  • A reaction product of a cyclic phosphazene and an amine terminated reactive liquid polymer (Hycar ATBN). The resulting product is an elastomer (300% ultimate elongation) that remains flexible at low temperatures (- 66 C). The phosphazene-modified ATBN is also inherently flame resistant and self-extinguishing. See U.S. Patent 4,535,147.
  • A reaction product of a cyclic phosphazene and a carboxyl terminated reactive liquid polymer (Hycar CTB). The resulting composition is inherently flame resistant and is hydrophilic, absorbing more than 3 times its weight in water. See U.S. Patent 4,533,726.

back to top

Electrically Conducting Polymers
  • Electrically conducting polypyrrole is instantaneously generated via reaction of pyrrole monomer with transition metal halides, anhydrous FeCl3 being preferred. The resulting polypyrroles have room temperature conductivities in the range of 0.001 to 150 S/cm, depending upon reaction conditions. Organo-substituted pyrrole monomers result in organic-soluble, electrically conducting polypyrroles. Also described is a process for converting otherwise electrically insulating substrates into electrical conductors. Virtually any porous substrate such as paper, polymers, fabrics, textiles, inorganic or organic particulates, inorganic or organic fibers and the like is first exposed to pyrrole monomer and then exposed to initiator/oxidant, thereby instantaneously forming the conducting polypyrrole as a coating on and/or impregnant within the porous substrate. This process has been used to prepare electrically conducting particles of alumina, silica, zeolites, etc. The process has been used to prepare lightweight polymer composites having use as aircraft de-icers, snow/ice melting systems for roofs, and vehicle seat heaters. See U.S. Patents: 5,407,699; 4,764,573; 4,680,236.
  • An electrically conducting polymer blend is formed by in situ polymerization of pyrrole monomer in a solution of various organic polymers such as polyurethanes, polyvinylchloride, polyamides, polyacrylates and the like. The resulting polymer blend can be further cold pressed or thermoformed, as appropriate, to produce a polyblend having electrical conductivity in the range of 0.001 to 150 S/cm, depending on reaction conditions. The polyblends have utility as lightweight resistance heaters (aircraft de-icers, roof de-icers), anti-static packaging, etc. See U.S. Patent 4,617,353.

back to top

Copyright 2010 Myers Consulting Services. ALL RIGHTS RESERVED. | Contact Information