Explosive and thermic compositions or charges – Structure or arrangement of component or product – Solid particles dispersed in solid solution or matrix
Patent
1994-12-07
1997-02-04
Michl, Paul R.
Explosive and thermic compositions or charges
Structure or arrangement of component or product
Solid particles dispersed in solid solution or matrix
149 4, 149 88, 524189, 524259, 524260, 524296, 524441, 524590, C06B 4536, C06B 4510, C08J 300, C08L 7500
Patent
active
056000898
ABSTRACT:
Elastomers having a polyurethane binder are formed from a mixture including tetrastar polyethylene oxide polyol with a molecular weight of at least 16000 daltons and a plasticizer present in a ratio of at least five parts by weight to one part of the polyol and provide high tensile strength, extreme elongation, great flexibility, and absence of voids. Energetic elastomers use a nitrate ester plasticizer with a curative having a functionality of at least three and an NCO/OH equivalent ratio of about 2.5 and may include an energetic particulate filler. Inert elastomers use a non-volatile ester plasticizer, as dimethyl phthalate, with a curative having a functionality of two and an NCO/OH equivalent ratio not over 2.0. Inert elastomers simulating mechanical properties of energetic elastomers including a nitrate ester use plasticizers, as a non-volatile ester and a mixture including a bromoaromatic derivative, having densities above and below the nitrate ester density, 1,2,4-butanetriol trinitrate being replaced with dimethyl phthalate and a mixture of pentabromodiphenyl ether and an aryl phosphate. A particulate energetic organic filler is simulated by an inert organic chlorine derivative of similar density, cyclotetramethylenetetranitramine being replaced by 1,2,3,4,7,8,9,10,13,14,14-dodecachloro-1,4,4a,5,6,6a,7,10,10a,11,12,12a-do decahydro-1,4,7,10-dimethanodibenzo (a,e) cyclooctene and permitting particulate aluminum to be used in the same proportions as in an energetic elastomer.
REFERENCES:
patent: 4706567 (1987-11-01), Schmid et al.
patent: 4799980 (1989-01-01), Reed, Jr.
Odian, George, Principles of Polymerization, 2nd ed., 1981, pp. 20-25.
Brady Vicki L.
Reed, Jr. Russell
Church Stephen J.
Forrest, Jr. John
Michl Paul R.
Niland P. D.
Sliwka Melvin J.
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