Discussion centers on elastomeric material used for liners in automotive air conditioning systems. The following facts must be taken into consideration: The three materials that are discussed are NBR, HNBR and CM (an example of heat-resistant elastomers containing chlorine, CM).HNBR is a heat-resistant alternative to NBR and withstands both R 12 and R 134a.HNBR has good low-temperature bending behavior. It, therefore, has the widest, most useful temperature range of all the elastomers tested.Where NBR is in use at present, the introduction of R 134a does not necessitate the use of a different elastomer. However, CM is a more suitable elastomer for R 22.
Elastomers for Automotive Air Conditioning Hoses
Sae Technical Papers
International Congress & Exposition ; 1990
01.02.1990
Aufsatz (Konferenz)
Englisch
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