Elastomer-Toughened Polyamide 66. Super-Toughened PA Resin Containing Modified-Elastomer with High Tensile Modulus and Functionalized Oligomer.

Elastomer Toughened Polyimide Adhesives Origin of the Invention

In accordance wi th the procedures agreed upon by Code GP-4 and Code NST-44 , the at tached NASA-owned U . S . Patent is being forwarded tor abstracting and announcement in NASA STAR. The following in format ion is provided: U . S . Patent No. : 4, 389,504 . Issue Date : June 21. 1983 Government or Contractor Employee: NASA Case No. : U.S. Government LAR-12,775-1 NOTE If this patent covers an i...

Multifunctional Elastomer Nanocomposites with Functionalized Graphene Single Sheets

We demonstrate the use of functionalized graphene sheets (FGSs) as multifunctional nanofillers to improve mechanical properties, lower gas permeability, and impart electrical conductivity for several distinct elastomers. FGS consists mainly of single sheets of crumbled graphene containing oxygen functional groups and is produced by the thermal exfoliation of oxidized graphite (GO). The present ...

Microstructural Design of Toughened Ceramics

The fracture toughness of ceramics can be improved by the incorporation of a variety of discontinuous, elastic reinforcing phases that generate a crack-bridging zone. Recent models of toughening by crack-bridging processes are discussed and used to describe the behavior observed in whisker-reinforced ceramics. The toughening response in ceramics reinforced with other types of discontinuous rein...

Toughening mechanisms in elastomer-modified epoxies

The role of matrix ductility on the toughenability and toughening mechanism of elastomermodified, diglycidyl ether of bisphenol A (DGEBA)-based epoxies is investigated. Matrix ductility is varied by using epoxide resins of varying epoxide monomer molecular weights. These epoxide resins are cured using 4,4' diaminodiphenyl sulphone (DDS) and, in some cases, modified with 10vol % carboxyl-termina...

Dielectric Elastomers Conductive Elastomer Insulating Elastomer