Molecular Structure and Cohesive Properties of Polymeric Adhesives.

reportActive / Technical Report | Accession Number: ADA069517 | Open PDF

Abstract:

The objective of the program was to develop quantitative relationships between molecular structure and cohesive strength properties of modified epoxy adhesives. Two commercial adhesives, a nylon-epxoy resin and a rubber-epoxy resin, were characterized and quantitatively analyzed. Model compositions were prepared in the laboratory equivalent to these two commercial materials. The rheological behavior as a function of curing conditions was characterized by torsional braid analysis. Results showed that at fixed composition the glass transition of the epoxy varied from 110 C to 140 C depending on cure history. The compatibility of the main components of the rubber modified the model adhesive versus compostion and temperature was determined by cloud point measurements. The observed morphology of cured CTBN modified epoxy resins was consistent with the miscibility diagram. Author

Author(s):
Doyle, Michael J.
Author Organization(s):
PITTSBURGH UNIV PA DEPT OF MECHANICAL ENGINEERING
Descriptive Note:
Final rept. 15 Apr 76-15 Apr 78,
Supplementary Note:
DOI: 10.21236/ADA069517
Pagination:
0168

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFML-TR-78-117, GIDEP-E164-1085
Contract/Grant Number(s):
F33615-76-C-5108
Task Number(s):
Q4
Project Number(s):
2303
Monitor Series:
TR-78-117, E164-1085
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_6.3.3_Spectrum Management; JCA_5.3_Planning; JCA_6_Net Centric; JCA_6.3_Net Management; JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_6.1_Information Transport; JCA_1.2.7_Experimentation; JCA_5.3.3_Develop Strategy; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_1.3_Human Capital Management; JCA_4.6_Engineering; JCA_1.3.2_Personnel Management; JCA_1.2.5_Lessons Learned; JCA_1.2.3_Educating
Modernization Areas:
Microelectronics
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*EPOXY RESINS, *ADHESIVES, LABORATORY TESTS, ADHESION, NYLON, SYNTHESIS(CHEMISTRY), RUBBER, CHEMICAL COMPOSITION, TRANSITION TEMPERATURE, RHEOLOGY, MOLECULAR STRUCTURE, CURING
Field(s)/Group(s):
Polymer Chemistry
Keyword(s):
WUAFML2303Q404, PE61102F
Report Date:
1978 Nov 01