Full definition
Fabric-reinforced neoprene is a specialized material combining polychloroprene (CR) rubber with one or multiple layers of woven fabric such as nylon (PA6/PA66), polyester (PET), or aramid. This composite structure significantly enhances the material's tensile strength—achieving up to 5 times that of unreinforced neoprene—along with superior tear resistance and dimensional stability. The incorporation of fabric layers reduces elongation, making it ideal for applications requiring structural integrity under stress. The construction typically consists of a 1-ply standard version or a more robust 2-ply variant, with the fabric sandwiched between neoprene rubber layers of specified thickness. The total thickness of the sheet can range from 1.5 mm to 12 mm, depending on the application requirements.
To ensure a strong bond between the neoprene rubber and the fabric, the latter is treated with a resorcinol-formaldehyde-latex (RFL) adhesive system. This treatment ensures a minimum bond strength of 3.5 N/mm as per ISO 252 standards, which is critical for applications exposed to high pressures and mechanical loads. Fabric-reinforced neoprene maintains its shape and performance without the distortion and cold flow often seen in unreinforced sheets, making it a preferred choice in various industrial settings. Its ability to withstand higher pressures makes it particularly suitable for applications like pump and valve diaphragms, where the fabric effectively prevents ballooning under pressure.
In addition to diaphragms, fabric-reinforced neoprene is commonly utilized in the manufacturing of bellows, expansion joints for piping and ducting systems, reinforced gaskets designed for higher pressure environments, rubber-lined equipment, and flexible connectors. When selecting the appropriate fabric for reinforcement, nylon is favored for its flexibility and impact resistance, while polyester is chosen for its lower elongation properties and improved dimensional stability. The material specifications should also adhere to ASTM D2000 standards, ensuring that they meet the requisite performance criteria for industrial applications.