Compositions – Humidostatic – water removive – bindive – or emissive
Patent
1997-06-30
1998-11-03
McKane, Joseph K.
Compositions
Humidostatic, water removive, bindive, or emissive
252 67, 252 77, 252 783, 523138, H01B 328, C09K 500
Patent
active
058303847
ABSTRACT:
The cool insulator incorporates a water gel coolant and poly-p-ethylene tphthalamide fibers (Kevlar) in an elastomeric rubber binder selected from the group consisting of silicon rubber, ethylene-propylene-diene-monomer, polybutadiene, and polyisoprene. The fiber provides erosion resistance required for long motor burning periods. This insulation includes a submicroscopic particulate water source with high temperature water release properties. The submicroscopic particulate water source is in the form of a flowable solid when formulated and in a weight percent amount from about 10 to about 20. The preferred water source is submicroscopic particulate silica containing over 11.times.10.sup.15 particles per gram and has a surface area of about 200 square meters per gram. The submicroscopic particulate silica is known as "dry water" and specifically described by its method of preparation in commonly assigned U.S. Pat. No. 4,008,170. The submicroscopic particulate silica water source is retained during processing and during a curing temperature up to about of 145.degree. F. The specific water source functions to provide water retention cooling up to about 150.degree. C. to thereby provide more efficient cooling as a result of lowering the thermal conductivity of the cool insulator in which it is formulated.
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Hice Terry E.
Hodges Gregory K.
Prickett Jonathon S.
Salter Christi L.
Stephens William D.
Baxan Deanna
Bush Freddie M.
McKane Joseph K.
Nicholson Hugh P.
The United States of America as represented by the Secretary of
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