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Evonik

Organofunctional Silanes

Evonik has developed a range of Silanes helping to reach higher performance to adhesives and sealants and brings excellent substrate adhesion, mechanical strength, storage stability, chemical resistance among many other benefits.

Dynasylan® Silanes

Improve product performance

End use applications

End use applications

Dynasylan® Organofunctional silanes can be used in various end use applications such as:

Construction

Civil Engineering has extensively used Adhesives and Sealants as alternatives to traditional joining methods.

Construction application helpls in simplify surface preparation to builder For Construction applications, Adhesives and Sealants are expected to meet the following objectives:

  • Simplify surface preparation to builders
  • Provide high resistance to temperature and climatic variations


Dynasylan® Silanes can help to reach these objectives by providing the following benefits:
  • Ease the bonding of dissimilar materials
  • Contribute to solve surface preparation issues
  • Enhance ageing resistance even in harsh conditions

Also for DIY applications, silanes give in e.g. repair adhesives the right "tack". Environmentally friendly and green adhesives can easily be formulated by using the right VOC reduced silane additive.


Dynasylan® grades for Building and Construction Chemical nature Technical features
Dynasylan® VTMO Vinyl-functional silane Water scavenger (stabilizer) in 1K polyurethane and SMP systems to improve storage and stability of formulations
Dynasylan® 6490 Oligomeric vinylsilane Excellent compatibilizer between inorganic fillers and organic polymers

Can improve filler dispersion, reduce water uptake and bring excellent balance between tensile strength and elongation at break at a high level
Dynasylan® TRIAMO Triamino-functional silane Can be used in RTV silicones as efficient adhesion promoter and in PVC-plastisols to improve adhesion between PVC and metal
Dynasylan® 1146 Oligomeric aminosilane Superior adhesion promoter - especially dedicated to SMP, silicones and butyl

Can also impart outstanding hydrophobicity by offering reduced VOC


Select the best grade for your construction application depending on your system and the benefits you are looking for and download its TDS:

Dynasylan product for construction applications VPS SIVO 260 VPS SIVO 260 VPS SIVO 280 VPS SIVO 280 Dynasylan SIVO 203 Dynasylan SIVO 203 Dynasylan 1146 Dynasylan 1146 Dynasylan 1189 Dynasylan 1189 Dynasylan 1124 Dynasylan 1124

Evonik Organofunctional silanes for Automotive


Select the best grade for your automotive application depending on the features you are looking for and download its TDS:  


Evonik’s Dynasylan® products for A&S-applications in Automotive
Evonik’s Dynasylan® products for A&S-applications in Automotive Dynasylan 1124 Dynasylan MTMO Dynasylan 1146 Dynasylan MEMO Dynasylan GLYMO

Transportation

One of the key challenges today for transportation OEMs is to reduce weight with the main objective to optimize the consumption of energy during use. To that purpose, this industry has seen the emergency of new types of joining methods and a large variety of materials (plastics, composites, etc.) that can be difficult to bond.

 Excellent mechanical performance When used in Transportation applications, Adhesives and Sealants have to exhibit the following performance:
  • Excellent mechanical performance with high resistance to vibrations
  • Good resistance to temperature and climatic variations
  • Versatility towards the different types of materials to be bonded

Dynasylan® Silanes when added to the Adhesive or Sealant formulations can provide the following benefits:

  • Contribute to solve surface preparation issues
  • Provide superior wet and dry adhesion
  • Enhance mechanical performance
  • Ease bonding of dissimilar materials
  • Provide resistance to chemicals, heat and moisture over time 

 

Underbody sealers

Underbody sealers are widely used for underbody protection

Underbody sealers are widely used for underbody protection against corrosion for motor vehicles.

Underbody sealers consist mainly of PVC-plastisols or PMMA-plastisols. They are applied by airless-spray guns and cure at temperatures of 130 °C to 140 °C.

Dynasylan® MTMO, a mercaptofunctional silane, enhances the adhesion of the PVC-plastisols to the sheet metals.



Windows/Windshields

An important application for sealants in the automotive industry

An important application for sealants in the automotive industry is the window glass segment for the direct sealing of windshields and side windows. Windshield sealants were introduced to the automotive industry in the 1970s, and remain standard practice today. Polyurethane sealants are used for this application.

Dynasylan® GLYMO, an epoxy silane, is an ideal adhesion promoter for polyurethane windshield sealants. Finally, Dynasylan® 1124, which is a secondary aminosilane, is used successfully as high performance additive for polyurethanes primers



Dynasylan® grades for Automotive and Transportation Chemical nature Technical features
Dynasylan® 1122 Secondary aminosilane Adhesion promoter between inorganic materials and organic polymers
Exceptionally suitable to form highly crosslinked networks
Dynasylan® 1124 Secondary aminosilane Adhesion promoter - especially suitable for amine hardeners for PU- products including primers. High crosslinking potential
Dynasylan® 1146 Oligomeric aminosilane Superior adhesion promoter - especially dedicated to SMP, silicones and butyl
Can also impart outstanding hydrophobicity by offering reduced VOC
Dynasylan® AMMO Primary aminosilane Traditional adhesion promoter - especially suitable for amine hardeners of EP- and PU-products

Renewable energies

Dynasylan® for windmill bonding pastes

Large quantities of bonding pastes are used in the manufacturing of wind turbine rotor blades. The normal production procedure is to manufacture the upper and lower shell of the rotor blade shell in separate moulds and glue them together by the bonding pastes. These bonding pastes must have good thixotropic and specific slump properties.

Several Dynasylan® Organo-functional silanes can act as adhesion promoters in bonding pastes, and further improve the crosslinking density of suitable bonding pastes:


Dynasylan® grades for windmill bonding pastes Technical features
Dynasylan® AMMO Primary aminosilane. Conventional adhesion promoter - especially suitable for amine hardeners
Dynasylan® GLYMO Epoxysilane. Classical adhesion promoter, can be formulated into the resin part.
Dynasylan® 1124 Secondary aminosilane. Adhesion promoter - especially suitable for amine hardeners for bonding pastes. High crosslinking potential.
Dynasylan® 1146 Oligomeric aminosilane. Adhesion promoter - especially dedicated to 2K-PU and 2K-EP chemistries. Can also improve the crosslinking densities of bonding pastes and can impart outstanding hydrophobicity. Reduced VOC.


Dynasylan® for Glass fibers


Glass fiber products, such as endless glass fibers, chopped strands, mats, rovings, yarns and milled glass fiber are used as reinforcing materials in thermoplastics and resins. Natural glass fiber shows poor adhesion to polymers, especially in the presence of moisture. For this reason, the glass surface is made organophilic by a sizing or finishing treatment. 
Dynasylan® products are essential components in sizing or finishing and positively affect the following properties:
  • Transmission of glass fiber strength to the polymer
  • Improvement of adhesion
  • Minimization of moisture sensitivity
  • Mechanical protection of glass fibers


Depending on the polymer to bond, various Dynasylan® grades can be used for glass fibers:


Dynasylan® grades for glass fibers Technical features
Dynasylan® AMEO Aminosilane. Adhesion promoter for PA, PU, EP, Phenolic, Melamine
Dynasylan® GLYMO Epoxysilane. Adhesion promoter for EP, PU, Phenolic, Melamine
Dynasylan® MEMO Methacrylsilane. Adhesion promoter for UP, Acrylic
Dynasylan® 2201 EQ Ureidosilane. Applications: PA, Phenolic
Dynasylan® 1189 Sec. Aminosilane. Applications: PP, PA
Dynasylan® SIVO 214 Proprietary aminosilane composition. Applications: PP, PA, Phenolic
Dynasylan®1175 Cationic aminosilane. Applications: PA, EP, Phenolic
Dynasylan® HYDROSIL 1151 VOC free water borne silane system. Applications: PA, PU, EP, Phenolic

Dynasylan® for Solar cells and Photovoltaic


Adhesion of solar cells In addition to wind energy, various polymer systems are also used to glue solar cell or photovoltaic equipment.

The following Dynasylan® grades can be used for solar cells or Photovoltaic equipment:


Dynasylan® grades Technical features
Dynasylan® GLYMO
For solar cells
Epoxysilane. Excellent adhesion promoter for glass and metals
Dynasylan® 1146
For solar cells or
Photovoltaic
Amino-functional silane oligomer. Improves adhesion. Repels undesirable moisture penetration. Low yellowing of white and transparent Adhesives & Sealants
Dynasylan® SIVO 203
For solar cells
New aminosilane system for SMP and silicone based sealants to improve adhesion to plastics

Electronics

Electronic adhesives for electrical engineering

Electronic adhesives for electrical engineering
Among others, Industrial adhesives for electronics and electrical engineering are used in the following situations:
  • Bonding of loudspeakers
  • Fixing of SMD components
  • Casting electronic parts inside a safety sensor
  • Contacting of flip chips for smart card modules

Electronic packaging materials

Electronic packaging refers to the enclosure of integrated circuit chips

Electronic packaging refers to the enclosure of integrated circuit chips, passive devices, the fabrication of circuit cards and the production of a final product or system.



EMC - Epoxy molding compounds

Epoxy molding compounds are widely used to encapsulate semiconductor devices due to superior properties such as high mechanical strength and high productivity.
Epoxy molding compounds are widely used to encapsulate semiconductor devices

Basically, epoxy molding compounds are solid epoxy polymers that are heated to a liquid and then injected over a circuit for protection.



Surface mounted device electronic adhesives

Mounting of circuit boards

Surface mounted device electronic adhesives play an important role in the mounting of circuit boards with subsequent soldering. They attach the electronic devices to the circuit board before the completed circuit boards are flipped for immersion in the soldering bath.

The adhesive is dispensed from a cartridge; this requires the adhesive to have a suitable drop profile. The drop profile of the adhesive is defined by the thixotropy, or viscosity in a resting state, and the surface tension. Both epoxy resin and acrylate-based adhesives are available for use as SMD adhesives.

 

Various Dynasylan® grades are successfully used in Electronics:



Dynasylan® grades for Electronics Applications Technical features
Dynasylan® GLYMO
  • Electronic adhesives for electrical engineering
  • Surface mounted device electronic adhesives
For epoxy SMD adhesives. Improved adhesion. Better resistance to heat and moisture
  • Electronic packaging materials
Successfully used in epoxy and polyurethane resins.
Improves the adhesion to the electronic parts. Provides better resistance to heat and moisture.
  • EMC - Epoxy molding compounds
Excellent adhesion promoter for epoxy molding compounds
Dynasylan® AMEO
  • Electronic adhesives for electrical engineering
  • Surface mounted device electronic adhesives
For epoxy SMD adhesives. Improved adhesion. Better resistance to heat and moisture.
Dynasylan® MEMO
  • Electronic adhesives for electrical engineering
  • Surface mounted device electronic adhesives
For acrylate-based adhesives. Improved adhesion. Better resistance to heat and moisture.
Dynasylan® VTMO
  • Electronic adhesives for electrical engineering
  • Surface mounted device electronic adhesives
For acrylate-based adhesives. Improved adhesion. Better resistance to heat and moisture


Evonik’s Dynasylan® Products for Electronic Adhesives:

Evonik’s Dynasylan® Products for  Electronic Adhesives Dynasylan® GLYMO Dynasylan® 1146 Dynasylan® 6490 Dynasylan® VTMO Dynasylan® MEMO

Aerospace

Adhesives and Sealants are the bonding and sealing of various aerospace applications

A large number of different adhesive and sealant systems have gained significance in the aerospace industry. Some examples of some important applications requiring adhesives and sealants are the bonding and sealing of cockpits, fuel tanks, pressurized cabins, and the embedding of electronic components.

Adhesives and sealants based on epoxy resins, methacrylates, polysulfides and silicones are used to seal cockpits and window panes. Epoxy structural adhesives are typically used for cobonded wing and tail structures.

Sealants are used to seal joints or entire inside walls of fuel tanks. The sealants used for fuel tanks are based on polysulfide polymers, epoxy resins, or silicones. Sealants are also required in the aerospace industry to seal cabins, which have to withstand high pressure.

Potting compounds and adhesives systems on polyurethanes, silicones or epoxy resins are additionally used to encapsulate and protect electronic components.

Finally, adhesives and sealants based on cyanacrylates, methacrylates, or epoxy resin are also used to prevent corrosion.

Various Dynasylan® grades are suitable for Aerospace applications:

 

Dynasylan® grades for Aerospace Technical features
Dynasylan® GLYMO Epoxysilane. Adhesion promoter for polysulfide sealants, epoxy and polyurethane systems
Dynasylan® 1124 Secondary amino-functional silane. Adhesion promoters with high crosslinking potentials in epoxy amine hardeners
Dynasylan® 1146 Adhesion promoters with high crosslinking potentials in epoxy amine hardeners
Dynasylan® VTMOEO Vinyl-functional silane, Water scavenger in polysulfide sealants
Dynasylan® VTMO Vinyl-functional silane. Water scavenger and stabilizer in 1K polyurethane systems
Dynasylan® MEMO Methacryl-functional silane. Adhesion promoter in methacrylate and cyanacrylate systems

Marine

One of the key challenges for the Marine industry is to use materials and systems that resist to humid and saline environments.

In addition, various materials such as wood, foam and composites are used to build boat. All these different materials are bonded together with adhesives and sealants.

 

Dynasylan® silanes can enhance Adhesive/Sealant formulations by providing the following benefits:
  • Contribute to solve surface preparation issues
  • Enhance mechanical performance and ease bonding of dissimilar materials
  • Provide long-lasting ageing resistance

 

The 3 following Dynasylan® silanes are used in Marine applications:

 

Dynasylan® grades for Marine Technical features
Dynasylan® MEMO Methacryl-functional silane. Coupling agent between fillers and/or fiber glass with unsaturated polyester or vinyl ester resin
Dynasylan® VTMO Drying agent and coupling agent.
Dynasylan® 4148 Wetting agent. Dispersing aid for fillers used in unsaturated polyester resins

 

In addition, Dynasylan® 4148 dramatically reduces viscosity in filled resin formulations and allows for extremely high fillers loadings:

 

Dynasylan® 4148 dramatically reduces viscosity

Figure 1: Dynamic viscosity (Pa.s) Dispersion in filled unsaturated polyester resin - 200 phr ATH

Polymer systems

Dynasylan®: a multi-purpose technology

Infographic: Technology overview

Oligomers selection guide

Structural Adhesives selection guide

The right silane for your application

Primer selection guide

Epoxy Functional Silanes

Silanes for Reactive PU Hotmelts

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