Article, in particular air spring bellows, a metal-rubber element, or a vibration damper

Abstract

In order to improve its flame retardant properties, the main body of the article consists of or contains at least one layer D constructed from a rubber mixture which is free from halogen-containing flame retardants and contains at least one carbon black having a BET surface area according to DIN-ISO 9277 between 35 and 140 m2/g and an oil absorption number (OAN) according to ISO 4656 between 70 and 140 ml/100g and a first aluminum trihydrate (ATH_1) and at least a further aluminum trihydrate (ATH_2), wherein the first aluminum trihydrate (ATH_1) and the further aluminum trihydrate (ATH_2) each have a different particle size.

1 - 7 . (canceled) 
     
     
         8 . An article comprising at least a single-layered main body having elastic characteristics, wherein at least a layer D of the main body is constructed from a rubber mixture which is free from halogen-containing flame retardants, wherein the rubber mixture comprises at least one carbon black having a BET surface area according to DIN-ISO 9277 between 35 and 140 m 2 /g and an oil absorption number (OAN) according to ISO 4656 between 70 and 140 ml/100 g, a first aluminum trihydrate (ATH_1) and at least a further aluminum trihydrate (ATH_2), wherein the first aluminum trihydrate (ATH_1) and the further aluminum trihydrate (ATH_2) each have a different particle size; and,
 wherein the particle size d 50  of the first aluminum trihydrate (ATH_1) determined by laser diffraction is between 0.1 and 0.6 μm and the further aluminum trihydrate (ATH_2) has a particle size d 50  determined by laser diffraction of between 0.9 and 1.5 μm.   
     
     
         9 . The article as claimed in  claim 8 , wherein the amount of carbon black is 5 to 30 phr. 
     
     
         10 . The article as claimed in  claim 8 , wherein the first aluminum trihydrate (ATH_1) is incorporated in the layer D in an amount of from 30 to 150 phr. 
     
     
         11 . The article as claimed in  claim 8 , wherein the at least one further aluminum trihydrate (ATH_2) is incorporated in the layer D in an amount of from 60 to 70 phr. 
     
     
         12 . The article as claimed in  claim 8 , wherein the layer D comprises 100 phr of CR or 100 phr of a blend of CR and NR (CR/NR) as the rubber component. 
     
     
         13 . The article as claimed in  claim 8 , wherein the article is an air spring bellows, a metal-rubber element, a vibration damper, a damping element of a bearing of a bushing, a damping element of a multilayered spring, a damping element of a conical spring, a tubular body or a drive belt.