Multi-layered structures and uses thereof

A method of making a vulcanized article, the method comprising:

• placing a first cap layer of a multi-layered structure in direct contact with a layer of uncured rubber to form a layered article, wherein the first cap layer has a cap layer first side and an opposing cap layer second side, and the cap layer second side is in direct contact with the layer of uncured rubber;
• and
• exposing the layered article to a condition effective to vulcanize the layer of uncured cured rubber in direct contact with the cap layer, thereby fully curing the layer of uncured rubber into a layer of cured rubber and bonding the multi-layered structure to the layer of cured rubber, producing the vulcanized article;
• wherein the multi-layered structure comprises the first cap layer and a core layer, wherein the cap layer first side is adjacent with a first side of the core layer, and the core layer has a gas transmission rate of about 0.05 to 0.1 cc/(m2 24 hr atm) for N2 measured at 23 degrees Celsius and 0 percent relative humidity;
• wherein the first cap layer comprises a cap layer material, the cap layer material comprising at least one polydiene polyol-based polyurethane, an uncured rubber compound, and a curing package;
• the uncured rubber compound of the cap layer material includes less than 5 weight percent of volatile compounds, the volatile compounds are volatile compounds released from the uncured rubber compound when the uncured rubber compound is heated to a temperature of about 200 degrees Celsius, and the weight percent of volatile compounds in the uncured rubber compound is based on a total amount of the uncured rubber compound present in the cap layer material,
• the curing package of the cap layer material comprises a sulfur-based or peroxide-based curing agent;
• and
• the cap layer material comprises about 50 weight percent to about 80 weight percent of the at least one polydiene polyol-based polyurethane, about 25 weight percent to about 50 weight percent of the uncured rubber compound, and up to 2 weight percent of the curing package.