Adhesives & Sealants Testing and Analysis
An adhesive can fail even when the formulation looks correct on paper. A sealant can come from the same supplier and suddenly cure differently. Two products may both be labeled “epoxy” or “PU” but behave very differently in production.
Xinbodi provides adhesives and sealants testing and analysis services for manufacturers, product users, suppliers and R&D teams that need to understand what is in a material, why its performance changed, or what caused a bonding or sealing problem.
Adhesives & Sealants We Analyze
Epoxy and Thermosetting Adhesives
- One-component epoxy adhesives
- Two-component epoxy systems
- Structural adhesives
- Epoxy potting compounds
- Encapsulation materials
- Modified epoxy systems
Polyurethane Adhesives
- One-component PU adhesives
- Two-component polyurethane adhesives
- Water-based PU adhesives
- PU laminating adhesives
- PU potting and sealing materials
Hot Melt and Pressure-Sensitive Adhesives
- EVA hot melt adhesives
- Hot melt adhesive pellets and sticks
- Hot melt pressure-sensitive adhesives
- Pressure-sensitive adhesives (PSA)
- Tape adhesives
- Label adhesives
Acrylic, Silicone and Specialty Systems
- Acrylic adhesives
- UV-curable adhesives
- Silicone adhesives
- Silicone sealants
- Polyurethane sealants
- Acrylic sealants
- Water-based adhesives
- PVA / PVAc adhesives
What Do You Need to Find Out?
Tell us your sample and what you need to find out. We will recommend the appropriate analysis plan.
“What Is This Adhesive or Sealant Made Of?”
You may have a finished adhesive, an unknown supplier product or a competitor sample but little information about its formulation. We help identify:
- Base polymer or resin
- Curing agent or hardener
- Tackifier
- Plasticizer
- Solvents
- Fillers
- Pigments
- Stabilizers
- Selected additives
- Approximate component levels where technically feasible
For deeper projects, the objective may go beyond identification and move toward formulation reconstruction or reverse engineering.
“Why Did the Bond or Seal Fail?”
Bonding failure is not always caused by the adhesive itself. Possible causes include:
- Incomplete or incorrect curing
- Wrong component ratio
- Surface contamination
- Poor substrate preparation
- Moisture exposure
- Heat or aging
- Material incompatibility
- Changes in formulation
- Migration of additives or low-molecular-weight components
- Degradation of the adhesive or substrate
A useful investigation often compares the failed sample with a known-good sample.
“Did My Supplier Change Something?”
A product can retain the same grade name while behaving differently in production.
You may notice:
- Different viscosity
- Slower or faster cure
- Lower bond strength
- Increased yellowing
- Different smell
- More filler or sediment
- Changes in flow or dispensing behavior
- Reduced heat or humidity resistance
In these cases, we can compare:
Old batch vs. new batch
or:
Supplier A vs. Supplier B
“Why Does the Competitor Adhesive Perform Better?”
Adhesive Formulation Analysis & Reverse Engineering Services
Differences may involve:
- Resin chemistry
- Curing system
- Tackifier
- Plasticizer
- Filler type or loading
- Crosslinking
- Molecular structure
- Additives
- Solvent system
- Thermal or rheological behavior
Comparative analysis can help identify meaningful formulation differences and provide a technical starting point for product development or reformulation.
What Can Adhesive & Sealant Analysis Determine?
| Your Question | What We May Determine |
|---|---|
What is the base resin? | Epoxy, PU, acrylic, EVA, silicone or other polymer systems |
| What is causing tack or flexibility? | Tackifiers, plasticizers and related formulation components |
| What filler is present? | CaCO₃, silica, talc and other inorganic materials |
| How much filler is used? | Approximate filler loading where feasible |
| Why is viscosity different? | Resin, solvent, filler or molecular differences |
| Why is curing different? | Curing system, component ratio or reaction-related differences |
| Did the supplier change the formulation? | Comparative chemical and physical differences |
| Why did the bond fail? | Evidence related to formulation, cure, interface, contamination or aging |
| Can the formulation be reconstructed? | Major components, estimated ranges and a practical formulation framework |
Industries We Serve
Chemicals
Agrochemicals, Industrial Chemicals, Dyes, Lubricants, Polymers, Plastics, Adhesives, Coatings, Rubber, Inks
Energy
Aerospace, Semiconductors, Oil & Gas, Minerals, Biofuels, Battery Materials
Food & Healthcare
Food, Medical Devices, Pharmaceutical
Cosmetics & Personal Care
Cosmetics Disinfection Products
Standard projects: 5–10 working days
Rush service may be available depending on scope.
How We Design an Adhesive Testing and Analysis Plan
If You Need to Identify the Resin
Possible techniques may include:
- FTIR
- Py-GC-MS
- NMR
- Thermal analysis
If You Need to Investigate Organic Additives or Solvents
Possible techniques may include:
- GC-MS
- LC-MS
- Extraction and targeted analysis
If You Need to Identify Fillers or Inorganic Components
Possible techniques may include:
- TGA
- SEM-EDS
- XRD
- XRF
- ICP-based analysis
If You Need to Compare Performance or Processing
Possible approaches may include:
- Rheology
- Viscosity
- DSC
- DMA
- Adhesion / peel testing
- Environmental exposure
The objective is not to run as many tests as possible.
How Our Adhesive Testing Service Works
1. Tell Us the Problem
Send your sample information and explain what you need to determine.
Examples:
“The new supplier material has a different viscosity.”
“Our competitor’s adhesive cures much faster.”
“This bond fails after high humidity.”
“We want to understand the formulation of this hot melt adhesive.”
2. Receive a Recommended Test Plan
Our team reviews the technical question and recommends the appropriate analysis and sample requirements.
3. Ship Your Samples
For comparison projects, send both samples whenever possible.
Examples:
Your product + competitor product
Good batch + failed batch
Supplier A + Supplier B
Part A + Part B + cured adhesive
4. Receive Results and Interpretation
You receive the analytical data together with conclusions focused on the question you originally needed to answer.
Why Choose Xinbodi Laboratories
7×24 Customer Support
Fast technical response within 24 hours.
Fast 5–10 Day Delivery
Efficient project turnaround after sample receipt.
Advanced Lab Capacity
4,000+ m² R&D labs and 1000+ precision instruments.
Cost-Efficient Analytical Services
Comparable analytical capabilities at typically 50–60% of U.S. and European laboratory pricing for similar project scopes.
100+ Master’s- and PhD-Level Experts Team
Extensive experience in solving complex material challenges.
Practical R&D Support
Actionable solutions and production guidance with protected formulas and sample data.
China Supplier Comparison
Evaluate materials and sourcing alternatives.
FAQs
I do not know which test to order. Can you recommend it?
Yes. Tell us the material, the samples available and the decision you need to make. We will recommend a suitable starting plan.
What if I do not have an approved reference?
We can still identify and characterize the submitted material. A specification, SDS, previous report or supplier document can provide useful context. If no reference is available, the report will focus on what can be established from the sample itself.
Can you tell me whether the material is safe to release?
We provide chemical evidence and sample comparisons to support your internal decision. Final release criteria should be based on your validated specification, process and quality requirements.
Can you compare more than two suppliers or batches?u compare two suppliers or production batches?
Yes. Multiple samples can be compared within one project. Clearly label each sample and tell us which one is the approved or preferred reference.
Can you detect every ingredient or impurity?
No analytical method can guarantee detection of every possible component. Results depend on the material matrix, component level, available reference information and selected methods. We will explain the scope and limits before testing.
How much sample do you need?
It depends on the material and analytical plan. Send us the sample information first, and we will confirm the recommended quantity before shipment.