The Resource Viscoelastic properties of alkoxy silane-epoxy interpenetrating networks, by Robert E. Jensen, Steven H. McKnight, and Giuseppe R. Palmese, (electronic resource)

Viscoelastic properties of alkoxy silane-epoxy interpenetrating networks, by Robert E. Jensen, Steven H. McKnight, and Giuseppe R. Palmese, (electronic resource)

Label
Viscoelastic properties of alkoxy silane-epoxy interpenetrating networks
Title
Viscoelastic properties of alkoxy silane-epoxy interpenetrating networks
Statement of responsibility
by Robert E. Jensen, Steven H. McKnight, and Giuseppe R. Palmese
Creator
Contributor
Subject
Language
eng
Summary
A model epoxy-silane interpenetrating network (IPN) was synthesized to simulate the molecular structure found at the fiber-matrix interphase. The Young's modulus (E) of the epoxy-silane IPN was determined% trough micromechanical analysis both quasi-statically and in the frequency domain. The epoxy-silane IPN was synthesized by diffusion of uncured diglycidyl ether of bisphenol A (DGEBA) epoxy resin and bis (p-aminocyclohexyl) methane (PACM) curing agent into spherical particles of condensed and crosslinked 3-glycidoxypropyltrimethoxysilane (GPS). This IPN composition was chosen to simulate the typical properties of a silane modified interphase found in glass reinforced composites. Differential scanning calorimetry showed that the glass transition temperature (Tg) of the initial crosslinked siloxane network increased upon cure of the DGEBA and PACM, but was still significantly lower than that of the neat epoxy matrix. Additionally, dynamic mechanical analysis was used in conjunction with the micromechanical C-Combining Rule to show that the Young's modulus of the epoxy-silane IPN spherical inclusions (E sub i) was decreased in comparison to the Young's modulus of the matrix epoxy (E sub m) at all temperatures. The time-temperature superposition (tTsp) principle was successfully applied to the epoxy-silane IPN to determine viscoelastic properties at high frequencies. The viscoelastic properties of the epoxy-silane IPN may have implications with respect to the ballistic impact resistance of composite structures used for U.S. Army applications
Member of
Cataloging source
DTICE
http://library.link/vocab/creatorName
Jensen, Robert E
Government publication
federal national government publication
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
http://library.link/vocab/relatedWorkOrContributorName
  • McKnight, Steven H
  • Palmese, Giuseppe R
  • U.S. Army Research Laboratory
Series statement
ARL-TR
Series volume
3109
http://library.link/vocab/subjectName
  • Alkoxysilanes
  • Penetration mechanics
  • Viscoelasticity
  • Laminates and Composite Materials
  • Viscoelasticity
  • Epoxy composites
  • High frequency
  • Adhesion
  • Modulus of Elasticity
  • Composite structures
  • Matrix materials
  • Phase studies
  • Siloxanes
  • Impact strength
  • Amines
  • Crosslinking(chemistry)
  • Silanes
  • Molecular structure
  • Methane
  • Glycidyl ether
  • Curing agents
  • Frequency domain
  • Reinforcing materials
  • Glass transition temperature
  • Differential scanning calorimetry
Label
Viscoelastic properties of alkoxy silane-epoxy interpenetrating networks, by Robert E. Jensen, Steven H. McKnight, and Giuseppe R. Palmese, (electronic resource)
Link
http://purl.access.gpo.gov/GPO/LPS126010
Instantiates
Publication
Note
  • Title from title screen (viewed Sept. 8, 2010)
  • The original document contains color images. All DTIC reproductions will be in black and white
  • "November 2003."
  • Available online
Bibliography note
Includes bibliographical references (p. 24-26)
Color
black and white
Control code
ocm74259754
Dimensions
unknown
Extent
1 online resource (vi, 32 p.)
Form of item
online
Governing access note
APPROVED FOR PUBLIC RELEASE
Other physical details
digital, PDF file.
Specific material designation
remote
System control number
(Sirsi) 1718963
Label
Viscoelastic properties of alkoxy silane-epoxy interpenetrating networks, by Robert E. Jensen, Steven H. McKnight, and Giuseppe R. Palmese, (electronic resource)
Link
http://purl.access.gpo.gov/GPO/LPS126010
Publication
Note
  • Title from title screen (viewed Sept. 8, 2010)
  • The original document contains color images. All DTIC reproductions will be in black and white
  • "November 2003."
  • Available online
Bibliography note
Includes bibliographical references (p. 24-26)
Color
black and white
Control code
ocm74259754
Dimensions
unknown
Extent
1 online resource (vi, 32 p.)
Form of item
online
Governing access note
APPROVED FOR PUBLIC RELEASE
Other physical details
digital, PDF file.
Specific material designation
remote
System control number
(Sirsi) 1718963

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