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.
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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
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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
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| Dynasylan® VTMO |
Vinyl-functional silane |
Water scavenger (stabilizer) in 1K polyurethane and SMP systems to improve storage and stability of formulations
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| 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
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| Dynasylan® TRIAMO |
Triamino-functional silane
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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
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Superior adhesion promoter - especially dedicated to SMP, silicones and butyl
Can also impart outstanding hydrophobicity by offering reduced VOC
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Select the best grade for your construction application depending on your system and the benefits you are looking for and download its TDS:
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:
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.
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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
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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
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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.
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Windows/Windshields
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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
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| Dynasylan® grades for Automotive and Transportation |
Chemical nature |
Technical features
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| Dynasylan® 1122
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Secondary aminosilane
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Adhesion promoter between inorganic materials and organic polymers
Exceptionally suitable to form highly crosslinked networks
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| Dynasylan® 1124 |
Secondary aminosilane
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Adhesion promoter - especially suitable for amine hardeners for PU- products including primers. High crosslinking potential
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| Dynasylan® 1146
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Oligomeric aminosilane
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Superior adhesion promoter - especially dedicated to SMP, silicones and butyl
Can also impart outstanding hydrophobicity by offering reduced VOC
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| Dynasylan® AMMO
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Primary aminosilane
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Traditional adhesion promoter - especially suitable for amine hardeners of EP- and PU-products
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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
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In addition to wind energy, various polymer systems are also used to glue solar cell or photovoltaic equipment.
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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
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Dynasylan® SIVO 203
For solar cells |
New aminosilane system for SMP and silicone based sealants to improve adhesion to plastics
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Electronics
Electronic adhesives for electrical engineering
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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
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Electronic packaging materials
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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.
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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.
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Basically, epoxy molding compounds are solid epoxy polymers that are heated to a liquid and then injected over a circuit for protection.
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Surface mounted device electronic adhesives
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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.
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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
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For epoxy SMD adhesives. Improved adhesion. Better resistance to heat and moisture
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- Electronic packaging materials
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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
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Excellent adhesion promoter for epoxy molding compounds |
| Dynasylan® AMEO |
- Electronic adhesives for electrical engineering
- Surface mounted device electronic adhesives
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For epoxy SMD adhesives. Improved adhesion. Better resistance to heat and moisture. |
| Dynasylan® MEMO |
- Electronic adhesives for electrical engineering
- Surface mounted device electronic adhesives
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For acrylate-based adhesives. Improved adhesion. Better resistance to heat and moisture. |
| Dynasylan® VTMO |
- Electronic adhesives for electrical engineering
- Surface mounted device electronic adhesives
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For acrylate-based adhesives. Improved adhesion. Better resistance to heat and moisture |
Evonik’s Dynasylan® Products for Electronic Adhesives:
Aerospace
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:
Figure 1: Dynamic viscosity (Pa.s)
Dispersion in filled unsaturated polyester resin - 200 phr ATH