Fluorodinitro Silicon Compounds and High Energy Elastomeric Polymers.

Abstract

High energy (HE) orgnosilane esters were prepared from 2, 2, 2-fluorodinitroethanol (ROH) and chlorosilanes in 85-90% yields. Physical property, shock sensitivity, and multinuclear NMR data are reported for the monomeric silanes (RO)(x)SiMe(4-x)(x = 2-4) and the disiloxane Me(RO)2SiOSi(OR) 2Me, along with calculated heat contents and detonation properties. A general hydrolytic sensitivity was observed which increased regularly with the number of RO- groups per Si. Overall, the physical and thermochemical properties of the trisester (RO)3SiMe most closely resembled those of the reference plasticizer FEFO, except for a desirably higher bp. Aminoalkyl (methyl) polysiloxane homopolymers were prepared by hydrolysis of the dialkoxysilanes (R(1)O)2MeSi-Z-NH2, with R(1) = Et or Me and Z = CH2, (CH2)3, (CH2)3NHCH2CH2, or (CH2)4, and analyzed by 29Si NMR. The products could be varied to contain up to approx. 85% linear siloxy units, with the balance as mainly 4 and 5 units cyclics.

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Document Details

Document Type
Technical Report
Publication Date
May 31, 1979
Accession Number
ADA072559

Entities

People

  • Robert S. Neale

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemical Reaction Properties
  • Chemical Synthesis
  • Chemistry
  • Decomposition
  • Explosives
  • Materials
  • Materials Laboratories
  • Materials Science
  • Military Research
  • New York
  • Organic Chemistry
  • Organosilicon Compounds
  • Physical Properties
  • Plastic Explosives
  • Polymers
  • Silicon Compounds
  • Tensile Strength

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  • Organic Chemistry
  • Polymer Science and Technology
  • Rocket Propulsion.