Custom Black Acid Alkali Resistant Rubber Sheet

Main Characteristics of Acid and Alkali Resistant Rubber Sheets

Acid and alkali resistant rubber sheets are core materials in industrial applications to resist corrosion from acidic and alkaline media. Their performance characteristics are closely linked to application scenarios. This analysis covers material properties, physical performance, chemical stability, environmental adaptability, and application fields, combined with the latest industry data and practical cases to illustrate their technical advantages:

I. Acid proof rubber sheet Material System and Core Properties

1. Base Material Types

• Ethylene Propylene Diene Monomer (EPDM): Copolymerized from ethylene, propylene, and non-conjugated diene, with high molecular chain saturation, offering excellent resistance to acids, alkalis, and salt solutions. For example, after immersion in 20% sulfuric acid for 24 hours, its volume swelling rate is only 3.5%, and hardness change rate ≤ 5%.
• Fluororubber (FKM): Fluoropolymer chains endow it with super-strong corrosion resistance, tolerating highly corrosive media such as 98% concentrated sulfuric acid and 40% sodium hydroxide, with an operating temperature range of -20°C to 200°C.
• Polytetrafluoroethylene (PTFE) Composite Rubber: A PTFE coating reduces the surface friction coefficient to below 0.05, with excellent anti-adhesion, suitable for acid-alkali environments containing solid particles, such as linings for chemical reaction kettles.

2. Reinforcement System Design

• Fiber Reinforcement: Aramid or glass fiber reinforcement increases tensile strength to 18–25 MPa and tear resistance to 30–40 kN/m, suitable for high-pressure pipeline sealing.
• Nanomaterial Modification: Adding graphene or carbon nanotubes increases thermal conductivity by 40%, addressing thermal failure issues in high-temperature acid-alkali environments.