Resist 65 and Resist ZES are two-component, solvent based inorganic zinc ethyl silicate
Slurries used in the ceramic core process are based upon modified ethyl silicate
binder and a ceramic aggregate of controlled density and particle size distribution.
com/research/4bwlhx/global_and) has announced the addition of the "Global and Chinese Ethyl Silicate
Industry Report 2014" report to their offering.
The slurry-like mixture hardens when gelling agent, which is 15 % sodium hydroxide solution, is added in amount of 10-12 g per 1 kg of the mixture to ethyl silicate
Seventy-five microns of zinc ethyl silicate
with 86% zinc dust in dry film gave by far the lowest electrical potential.
Rolls-Royce examines its replacement of an ethyl silicate
shell system with a water-based colloidal silica system.
w] zinc epoxy 90 92 TABLE 2 Comparison of properties of water-borne and solvent-borne zinc silicate paints Properties WB IOZ alkali SB IOZ ethyl silicate
silicate Surface reparation -/+ + Ease of application - + Mud cracking ++ -/+ Overcoating + -/+ Hardness ++ + Solvent content +++ - Popping when overcoating - - Volume solids +++ + Drying + ++ Chemical resistance +++ +++ Corrosion protection +++ +++ (+++ = excellent, ++ = very good, + = good, -/+ = not so good,- = bad) TABLE 3 Average rust creep from scribe after 25 cycles (4200 hours) in the cyclic test of NORSOK M-501 rev.
Chadwicks, New York, introduced an alternative binder system to ethyl silicate
binders that allows drying rates comparable to ethyl silicate
while using any standard refractory.
Though colloidal silica takes longer to dry than the ethyl silicates
because of its lower vapor point, environmental disposal problems with ethyl silicate
binders have given the 35-year-old colloidal process new life.
The ethyl silicate
material emits volatile organic compounds to the environment, but the colloidal silica-base material does not.
Duriron made changes in their filled wax and shell formulations, and now runs a water-base binder system at, "essentially the same rate as with ethyl silicate
Ceramic molding may be accomplished through three techniques: "true" ceramic molding, ethyl silicate
slurry molding and the Shaw process, a variation of the ethyl silicate