Best adhesive for Composites
When selecting an appropriate adhesive for bonding composites there generally isn't a one size fits all solution. Each adhesive technology has its benefits and depending on the application is how an adhesive should be chosen. Factors such as which specific substrate(s), load requirements, environmental resistance and production speed all play a critical role in determining the right adhesive. Some applications may require high structural strength, toughness and impact resistance, while others prioritise long open times and gap filling capability or fast fixture times for high speed production environments.
This page provides an overview of the common composite bonding adhesive types. Detailed recommendations and product guidance can be found within the material specific sections linked below. For a tailored recommendation to your application contact our expert team.
Click the links below for information on bonding specific composites
- Carbon FibreÂ
- Fibreglass (GRP)
- Fibre Reinforced Plastic (FRP)
Types of Adhesives Used for Composite Bonding
Methyl Methacrylate (MMA)
Methacrylate adhesives are high strength adhesives capable of bonding composites and are considered the gold standard in the industry. They provide excellent load bearing performance, impact resistance and durability. Methacrylate's also work well with dissimilar material bonding and are widely used in industry manufacturing and repairs.
Instant Adhesives (Cyanoacrylate)
Instant adhesives are fast curing, single component adhesives ideal for composites where rapid handling strength is required. They are commonly used for small to medium components where high-speed assembly is necessary. They are ideal for attaching rubber components to composites.Â
Structural Polyurethanes
Structural polyurethane adhesives provide flexible and durable bonds for composites. They can be exposed to vibration, impact or thermal movement. They are suitable for both composite to composite and composite to dissimilar substrate bonding where toughness and environmental resistance are required.
Epoxy Adhesives
Epoxy adhesives offer high strength, excellent chemical resistance and good thermal stability. They are widely used for applications that require high strength, rigid bonds where long-term durability is critical.
MS Polymers
MS Polymer are single part adhesives that allow for long term durability and flexibility. They bond a wide range of composites and other substrates while also providing good resistance to weathering. They are ideal for both sealing applications and panel bonding.
How to select the best glue for composite bonding?
To select the best adhesive for composite bonding the adhesive should match the application as well as what the composite is being bonded to. The service environment is just as important as the material itself. Exposure to impact, vibration, movement, chemicals, moisture and temperature changes will all affect adhesive performance. Proper surface preparation is critical. By assessing these factors together you can select the correct adhesive that provides reliable, long term performance.
Surface Preparation Best Practices
Proper surface preparation is essential for achieving a reliable bond on composites. In most cases, a simple solvent wipe is best practice, as it removes oils, dust and handling contaminants that can prevent a good bond. We recommend using NEXTITE PROPREP Surface Preparation Cleaner as it is fast evaporating and non harmful to delicate surfaces.
Professional Adhesive Solutions for Plastic Applications
NEXTITE Adhesives are designed to meet the demands of industrial, trade and manufacturing environments. Selecting the correct adhesive system ensures long term performance.
For detailed guidance and material specific composite bonding pages explore the links above.
Our team is always ready to help. Contact us to get expert advice on selecting the right adhesive for your materials and application.