Chemical Tankers: Lining Solutions using Bromobutyl Rubber for Acid Resistance.

Chemical Tankers: Lining Solutions using Bromobutyl Rubber for Acid Resistance

Problem Statement

Chemical tankers transporting concentrated acids face severe material degradation. Conventional rubbers like NBR and EPDM exhibit poor resistance to acidic environments, leading to swelling, cracking, and delamination. These failures compromise tank integrity and safety.

Material Science Analysis

Bromobutyl rubber excels in acid resistance due to its halogenated structure. The bromine groups provide superior chemical inertness, preventing acid penetration and swelling. Unlike NBR, which degrades in acidic media, Bromobutyl maintains structural integrity. Its low permeability also minimizes acid diffusion, ensuring long-term performance.

Technical Specs

• Shore A Hardness: 50-70
• Tensile Strength: 10-15 MPa
• Elongation at Break: 400-600%
• Temperature Range: -40°C to +150°C
• Compression Set: ≤20% (70 hours at 150°C)

Material Comparison

Material	Acid Resistance	Temperature Range (°C)	Compression Set (%)	Permeability
Bromobutyl Rubber	Excellent	-40 to +150	≤20	Low
NBR	Poor	-20 to +120	≥50	High
EPDM	Moderate	-40 to +150	≤30	Moderate

Standard Compliance

RubberQ adheres to IATF 16949 standards for batch-to-batch consistency. Our Bromobutyl formulations comply with ASTM D2000 for material callouts and ISO 3601 for sealing performance. Surface preparation and bonding processes meet ASTM D429 adhesion testing requirements.

CTA

For custom material compound development or IATF 16949 documentation, consult RubberQ’s engineering department.