Structural Adhesives

1C Epoxy – 2C Epoxy – 2C MMA

The structural adhesives from DREI BOND are particularly suitable for applications in which the power transmission of the adhesive connection is in the foreground. The strength of the connection allows high forces to be transmitted between the components and at the same time to absorb shock or vibration loads. The structural bonds often replace conventional mechanical connections and thus offer the possibility of reducing costs through lower material thicknesses or simplified production processes.

Due to the properties mentioned, structural adhesives from DREI BOND can be used in a variety of ways to connect high-strength components (including different materials), ex. for box bodies, magnetic bonding or for bonding fiber composite materials.

 

1C epoxy

One-component adhesives based on epoxy resins have the advantage that they only cure at a selected point in time that is adapted to the production process. This means that there is no time limit for further production steps and there is also the option of curing several bonds at the same time. In the case of one-component epoxy adhesives, the resin and hardener are already reliably mixed with one another in an optimized ratio, which simplifies both manual and automated application of the adhesive.

 

2C epoxy

In the case of two-component epoxy resin adhesives, a hardener (mostly amines) is added to the epoxy resin during application via a static mixer, thus starting the curing process. Storage stability is achieved by keeping both components in separate containers (ex. two chambers of a double cartridge). Mixing the components is done by the user and, like curing, typically takes place at room temperature. After the pot life has expired (= processing time, see technical data sheet), the strength of the mixed adhesive increases significantly so that the components must be joined by this point at the latest. A further increase in strength can be achieved if the curing is carried out at an elevated temperature or if a temperature treatment takes place after the curing (annealing).

 

2C MMA (methyl methacrylate)

The 2C MMA adhesives are used in particular when high strength levels combined with a certain deformability are required. This is especially the case when materials with a slightly increased flexibility or different coefficients of thermal expansion are to be glued together and used in a wide temperature range. The processing of the 2C MMA is comparable to the 2C epoxy. The two components are initially separate until they are mixed in a static mixer during use. The components must be joined within the pot life (= processing time, see technical data sheet).

DREI BOND - Structural Adhesives

NameDescriptionColorViscosity [Pas]Temperature Range [°C]Pot Time [min]Hand Strength [min]Full Strength [h]Special FeaturesContainer [ml]
7568-11C epoxy resinivory100 - 200-40 up to +18025 min (135°C)300, 20000Request Product Sheet
76011C epoxy resinblack1 - 3-40 up to +18040 min (120°C)self-leveling1000Request Product Sheet
76081C epoxy resinblack250 - 500-40 up to +18075 min (130°C)300, 20000Request Product Sheet
81212C epoxy resin (mod.)graythixotropic paste-40 up to +12010 - 1550 - 90*72flexible50, 400Request Product Sheet
84292C epoxy resinblack50 - 80-40 up to +120150 - 200360 - 540*7250, 400Request Product Sheet

* corresponds to 0.1 N / mm2 tensile shear strength

** Functional strength = approx. 60% of the final strength

*Container (PU): 25ml (20), 50ml (10), 300ml (12), 400ml (6)

NameDescriptionColorViscosity [Pas]Temperature Range [°C]Pot Time [min]Hand Strength [min]Full Strength [h]Special FeaturesContainer [ ]
84362C epoxy resingray75 - 150-40 up to +12072 - 9650, 400Request Product Sheet

* corresponds to 0.1 N / mm2 tensile shear strength
** Functional strength = approx. 60% of the final strength

NameDescriptionColorViscosity [Pas]Temperature Range [°C]Pot Time [min]Hand Strength [min]Full Strength [h]Special FeaturesContainer [ml]
85442C epoxy resintransparent12 - 24-40 up to +8010 - 2040 - 60**2450Request Product Sheet
81422C epoxy resintransparent12 - 30-40 up to +803 - 820 - 30**2425, 50, 400Request Product Sheet
84512C epoxy resinoff-white5 - 25-40 up to +200150480**168high temperature stable50, 400Request Product Sheet
85522C epoxy resinoff-white100 - 150-40 up to +1201060**4850, 400Request Product Sheet
86002C methyl methacrylatecream20 - 75-40 up to +120818*2450, 400Request Product Sheet
86022C methyl methacrylateamber1 - 7-40 up to +12028*2450, 400Request Product Sheet
86042C methyl methacrylatetransparent40 - 60-40 up to +12018*2450, 400Request Product Sheet
86102C methyl methacrylateoff-white20 - 70-40 up to +1202035*2450, 400Request Product Sheet
86202C methyl methacrylateblack6 - 11-40 up to +1202 - 410 - 15*2450, 400Request Product Sheet
86622C methacrylate estersamber3 - 6-40 up to +1204 - 710 - 12*24 - 48low odor50, 400Request Product Sheet
86802C methyl methacrylatewhite25 - 35-40 up to +120815*24white50, 400Request Product Sheet
42612C methacrylate esterstransparent15 - 30-40 up to +1205 - 812 - 15*36 - 48polyolefin bonder: suitable of PE, PP, HDPE etc.50, 400Request Product Sheet

* corresponds to 0.1 N / mm2 tensile shear strength
** Functional strength = approx. 60% of the final strength

F.A.Q.

What are structural adhesives?

Structural adhesives are one- and two-component adhesives that are characterized by very high strengths. They are suitable for the high-strength bonding of a wide variety of materials and are used where high forces are to be transferred via the bond. They can therefore often be used as a substitute for mechanical joining techniques or welding, etc.

In which industry are structural adhesives used?

Structural adhesives are used in both trade and industry. The most important sectors include the automotive industry, the aerospace industry, the electronics industry, medical technology and the consumer goods industry. 

What advantages does structural adhesive offer?

Structural adhesives can often be used to create reliable, long-lasting connections more cost- effectively than mechanical fastening methods. They also offer many possibilities in terms of improved aesthetics. A further advantage is that smaller component thicknesses can be realized due to the two-dimensional force transmission and the reduction of stress peaks. In addition, the parts to be joined are neither mechanically nor thermally damaged. Furthermore, component tolerances can be compensated for.

What should be considered when selecting structural adhesives?

For optimal bonding results, it is important to select the right adhesive for the respective application. Which products are suitable depends on the type of load (tensile force, compressive force, peel force, shear force, splitting force) that will later act on the bond, as well as the stresses caused by temperature, chemicals, UV radiation and similar. In addition, the curing conditions and speed must be suitable for the production process and the components.

What different types of structural adhesives are there?

There are a variety of different structural adhesives, such as epoxy resin adhesives (1K, 2K) or acrylate-based adhesives (including 2K MMA). There are both one-component (1C) and two-component (2C) systems. One-component systems cure thermally, for example, while two-component systems usually react at room temperature by mixing the two components to form the end product. 

Are structural adhesives suitable for bonding metal objects?

In principle, many structural adhesives adhere to various metal surfaces without pre-treatment. The suitability for the respective application must be tested on a case-by-case basis. Both epoxy resin adhesives and 2K MMAs are suitable for metal bonding.