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Title: Compatibility of refrigerants and lubricants with engineering plastics. Final report

Abstract

23 plastics have been subjected to immersion studies using 7 different lubricants at 60 C and 100 C, and 10 different refrigerants at ambient and 60 C. In the first part of the study, 22 hermetic stress crack-creep rupture test chambers were used to determine dynamic effects of a constant dead weight load on plastic test bars immersed at 20 C in a 40% refrigerant 32 ISOVG branched acid polyolester lubricant. The creep modulus data of the 10 refrigerants, using a dead weight load of 25% of ultimate tensile, are compared to values for air and HCFC-22. In the second part, the plastic test bars were aged for 14 d at constant refrigerant pressure 300 psia with 17 refrigerant lubricant combinations at 150 C. Additional evaluations were conducted to elucidate the effects of temperature, refrigerant, and lubricant on the plastics. At 150 C, high acid formation (high TAN) was further examined with dehydrated plastics. These evaluations indicate that dehydrating the plastics reduced, but did not eliminate, high TAN values and that heat alone caused the lost physicals. Alternative HFC refrigerants had little impact on plastics; some polyolester lubricants caused identifiable changes.

Authors:
Publication Date:
Research Org.:
Imagination Resources, Inc., Dublin, OH (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10113619
Report Number(s):
DOE/CE/23810-15
ON: DE94004959; BR: EC0502000/EC2302000
DOE Contract Number:  
FG02-91CE23810
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Dec 1993
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; REFRIGERANTS; COMPATIBILITY; LUBRICANTS; PLASTICS; PROGRESS REPORT; TESTING; EXPERIMENTAL DATA; DIMENSIONS; RUPTURES; CREEP; 360604; CORROSION, EROSION, AND DEGRADATION

Citation Formats

Cavestri, R C. Compatibility of refrigerants and lubricants with engineering plastics. Final report. United States: N. p., 1993. Web. doi:10.2172/10113619.
Cavestri, R C. Compatibility of refrigerants and lubricants with engineering plastics. Final report. United States. https://doi.org/10.2172/10113619
Cavestri, R C. 1993. "Compatibility of refrigerants and lubricants with engineering plastics. Final report". United States. https://doi.org/10.2172/10113619. https://www.osti.gov/servlets/purl/10113619.
@article{osti_10113619,
title = {Compatibility of refrigerants and lubricants with engineering plastics. Final report},
author = {Cavestri, R C},
abstractNote = {23 plastics have been subjected to immersion studies using 7 different lubricants at 60 C and 100 C, and 10 different refrigerants at ambient and 60 C. In the first part of the study, 22 hermetic stress crack-creep rupture test chambers were used to determine dynamic effects of a constant dead weight load on plastic test bars immersed at 20 C in a 40% refrigerant 32 ISOVG branched acid polyolester lubricant. The creep modulus data of the 10 refrigerants, using a dead weight load of 25% of ultimate tensile, are compared to values for air and HCFC-22. In the second part, the plastic test bars were aged for 14 d at constant refrigerant pressure 300 psia with 17 refrigerant lubricant combinations at 150 C. Additional evaluations were conducted to elucidate the effects of temperature, refrigerant, and lubricant on the plastics. At 150 C, high acid formation (high TAN) was further examined with dehydrated plastics. These evaluations indicate that dehydrating the plastics reduced, but did not eliminate, high TAN values and that heat alone caused the lost physicals. Alternative HFC refrigerants had little impact on plastics; some polyolester lubricants caused identifiable changes.},
doi = {10.2172/10113619},
url = {https://www.osti.gov/biblio/10113619}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 01 00:00:00 EST 1993},
month = {Wed Dec 01 00:00:00 EST 1993}
}