Materials Testing for Adhesives & Sealants

Adhesives & Sealants Testing & Analysis

A bond usually fails because of something that was missed: a contaminated surface, incomplete curing, or an adhesive that was not suitable for the application.MatX Lab helps analyze adhesives and sealants to identify materials, confirm cure conditions, measure bond performance, and understand the reasons behind joint failures. Our analysis looks at the adhesive, the surfaces it bonds with, and the fracture area to determine whether the failure occurred within the adhesive, the substrate, or at the interface between the two.

What We Analyze in Adhesives & Sealants

Adhesive analysis focuses on understanding the material, its cure condition, and how well the bond performs. We identify the adhesive chemistry, assess the level of cure, measure bond strength, and investigate the reasons behind joint failures. The same analytical methods used to verify incoming adhesives can also support deformulation studies and detailed failure investigations.

• Adhesive and sealant identification and deformulation.
• Cure state, glass transition, and thermal stability.
• Lap shear, peel, and tensile bond strength.
• Bond-surface chemistry and contamination.
• Adhesive versus cohesive failure.
• Fluid resistance and aging behavior.

How We Test Adhesives & Sealants

Adhesive work usually combines an identity method with mechanical bond testing and surface analysis, and we scope the combination your question needs. The methods below are the ones we reach for most, and each links to its own page.

Spectroscopy:

Enables deformulation and uses FTIR to identify the adhesive chemistry and additives. It is the quickest method for flagging a substitute or verifying a product.

Mechanical Testing:

Measures lap shear, peel, and tensile bond strength. These numbers determine whether a joint meets its specification and how it fails under load.

Thermal Analysis:

Uses DSC and TGA to measure the cure state, glass transition, and thermal stability. Weak bonding is frequently caused by undercure, which is frequently undetectable.

Surface Analysis:

Characterizes bond-surface chemistry and contamination by XPS. Adhesion problems frequently trace back to what was on the surface before bonding.

Imaging & Microscopy:

Examines fracture surfaces to distinguish adhesive from cohesive failure and to reveal voids, contamination, or incomplete wetting.

Elemental Analysis:

Identifies fillers and inorganic contaminants that affect performance or point to a formulation change.

Failure Analysis:

Determines whether a bond failed from surface contamination, undercure, the wrong adhesive, or overload, and reports the root cause with supporting evidence.

Industries That Rely on Adhesives & Sealants Testing

Adhesive testing is needed in many industries where materials are joined, sealed, or used to protect components. When a bond fails, it can cause problems ranging from leaks and unwanted noise to serious structural issues.

Aerospace · Automotive · Electronics · Manufacturing · Medical Devices

Standards & Test Methods

Adhesive testing is method-driven, and your specification usually names the standard. Where an applicable standard exists, testing is aligned to it and cited in your report. We align to the method your specification requires and document it.