Accession Number : AD0855661

Title :   Microencapsulated Sealant and Self-Sealant Components.

Descriptive Note : Technical Documentary rept.,

Corporate Author : NATIONAL CASH REGISTER CO DAYTON OH

Personal Author(s) : Hanny, John F.

Report Date : AUG 1964

Pagination or Media Count : 55

Abstract : The purpose of this research program was to encapsulate potential sealant and self-sealant components. The microcapsules formed were to be chemically and environmentally resistant, yet possess the capability of being ruptured by such forces as pressure, shock and shear. Two mixtures of triethylene tetramine and Quadrol (1,1,1',1'-ethylenedinitrilo tetra-2-propanol) have been encapsulated by interfacial polycondensation and formulated into single package capsular self-sealant systems. Evaluations have indicated that both of these systems can be activated by high velocity projectiles and will seal the penetration cavity. Encapsulation of other sealant and self-sealant components include stannous octoate, dibutyltin dilaurate, Adiprene L-100, Hysol hardener and a boron trifluoride etherate complex. The properties and requirements that must be inherent in the capsule for rupture by shock and/or shear mechanisms have been defined. Capsular self-sealant formulations were evaluated for shelf-life over a period limited to eight (8) weeks and remained stable. (Author)

Descriptors :   *ENCAPSULATION), (*SEALING COMPOUNDS, (*SPACECRAFT, SEALING COMPOUNDS), COATINGS, POLYMERS, AMINES, PROPANOLS, ETHYLENEDIAMINE, POLYMERIZATION, CONDENSATION REACTIONS, POLYAMIDE PLASTICS, PHTHALIC ACIDS, SEBACIC ACID, TIN COMPOUNDS, BORON COMPOUNDS, SHEAR STRESSES, POLYESTER PLASTICS.

Subject Categories : Adhesives, Seals and Binders
      Plastics
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE