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Title: Silicate stabilization studies in propylene glycol

In most North American and many European coolant formulations, the corrosion inhibition of heat-rejecting aluminum surfaces is provided by alkali metal silicates. But, their tendency towards polymerization, leading to gelation and/or precipitation, can reduce the effectiveness of a coolant. This paper presents the results of experiments which illustrate formulation-dependent behavior of inorganic silicate in propylene glycol compositions. Specific examples of the effects of glycol matrix, stabilizer type, and hard water on silicate stabilization are provided.
Authors:
 [1]
  1. ARCO Chemical Co., Newtown Square, PA (United States)
Publication Date:
OSTI Identifier:
362093
Report Number(s):
CONF-9711247--
TRN: IM9933%%477
Resource Type:
Conference
Resource Relation:
Conference: Symposium on engine coolant testing, Scottsdale, AZ (United States), 5-7 Nov 1997; Other Information: PBD: 1999; Related Information: Is Part Of Engine coolant testing: Fourth volume; Beal, R.E. [ed.]; PB: 438 p.; ASTM special technical publication 1335
Publisher:
American Society for Testing and Materials, West Conshohocken, PA (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 33 ADVANCED PROPULSION SYSTEMS; INTERNAL COMBUSTION ENGINES; COOLANTS; CORROSION INHIBITORS; STABILITY; GLYCOLS; GELATION; PRECIPITATION; SILICATES; ALUMINIUM; CORROSION PROTECTION