Short-term aging study at 90/sup 0/C in air: Halthane 73-18 and 73-18A
A ninety-day aging study was performed on Halthane 73-18A to determine the thermal aging effects due to the presence of DABCO, a catalyst. Samples were taken after 14 days, 30 days, 60 days, and 90 days of exposure to air at 90/sup 0/C. Tests used to evaluate aging effects were: ring tensile, differential scanning calorimetry, dynamic dielectric spectroscopy, and solvent swell. Results of tensile tests indicated an increase in tensile properties that peaked at 30 days and decayed to 70 percent loss of peak strength in 90 days. DSC, DDS, and solvent swell data all followed the same trend. Comparative analysis of all data support the hypothesis that the presence of DABCO increases the oxidative cleavage of the polyether chain segment.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7330739
- Report Number(s):
- UCID-17342
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of halthane polyurethane adhesives. I. Dynamic mechanical and thermal properties. [-150/sup 0/ to 200/sup 0/C]
Time-temperature correspondence of the dynamic mechanical properties of halthane 73-18 and halthane 87-1
Related Subjects
ADHESIVES
AGING
AIR
MEDIUM TEMPERATURE
POLYURETHANES
TENSILE PROPERTIES
FLUIDS
GASES
MECHANICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYAMIDES
POLYMERS
360403* - Materials- Polymers & Plastics- Mechanical Properties- (-1987)