Read Dynasylan SIVO 160 text version

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

Outline

Dynasylan® Silane Systems Dynasylan® Primers and Binders Dynasylan® SIVO 160 Conclusions

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Organofunctional Silanes:

Siliconfunctional group: Fast hydrolysis Reacts with inorganic substrate

RO RO RO Si (CH2)n Y

Organofunctional group: Chosen depending on use Reacts with organic resins

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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New Silane Developments: Ever more Sophisticated

From solvent-borne silanes to water-borne resin systems

Sophistication Sophistication

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Formulating with Dynasylan®

... as primer

Dynasylan®

Silanes HYDROSIL Silicic acid esters SIVO 110 SIVO 160

Adhesion promotion ... as resin Binder for inorganic and hybrid coatings Binder for special coatings ... as pigment modifier Surface modification ... as additive In conventional metal primers Adhesion promoter

SIVO® SOL Technology

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Outline

Dynasylan® Silane Systems Dynasylan® Primers and Binders Dynasylan® SIVO 160 Conclusions

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Dynasylan® HYDROSIL 2909: Example for Primer Application

Adhesion upon water storage: Cross-cut test (ISO 2409):

Coating without primer pre-treatment

1.0 wt.-% silane primer Dynasylan® HYDROSIL 2909

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Silanes as Binders: Beyond Adhesion Promotion

Silanes are excellent adhesion promoters

Inorganic Binders can do more:

Hydrophobation of the surface Reaction with fillers, pigments and the substrate Barrier to chloride and water penetration Excellent substrate wetting properties

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Dynasylan® SIVO 110 Inorganic Resin with Inorganic Particles

Particle distribution of functionalized SiO2 particles in Dynasylan® SIVO 110

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Dense Coatings with SiO2-Particles in Dynasylan® SIVO 110

SEM-Micrographs:

Small inorganic particles allow:

Low coating thickness Dense coatings Hard coatings

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160 Page 10 Seite | 10

Example: Corrosion Protection on a Sand Blasted Steel Surface

Substrate:

Sand blasted steel (surface roughness 50 ) 500 h salt spray

Pre-treatment:

Formulation of Dynasylan® SIVO 110 + 111 Wet coating thickness Pre-dried at 60 to 100 °C, 10 min

Without Primer

Topcoat:

Polyester powder coating, 60 Cured at 200 °C, 10 min

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160 Page 11

SIVO® SOL Technology

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Development of New LowTemperature Curing Technology

Dynasylan® SIVO 110:

Dynasylan® SIVO 160:

Resin for the formulation of corrosion protection system Cured at high temperature: 200°C for 10 minutes Excellent for the formulation of primers below powder coatings

New Silane Technology

Resin for the formulation of corrosion protection system Cured at low temperature: 60 to 80°C for 10 minutes Excellent for the formulation of primers and blank corrosion protection systems

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Outline

Dynasylan® Silane Systems Dynasylan® Primers and Binders Dynasylan® SIVO 160 Conclusions

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Dynasylan® SIVO 160 on an Aluminum Substrate

SIVO 160 coates an aluminum substrate without defects (accoring to XPS)

Aluminum substrate

Coated aluminum substrate

SIVO 160 1.Dipping 2.Curing 80 °C Layer thickness ~ 150 nm

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Thin Silane Films on Metal Substrates

O O Si O Si R O Si O O O Si O Si O O Si O O O O O Si Si O O O O O Si Si O Si R O Si O Si O O Si R O R O R O O R Si O O Si Si R Si Si O O O O O HO Si O O O Si Si Si R O O O O O O HO O Si

R

O

Adhesion promoter for a subsequent coating

Hydrophobic inner layer Barrier layer for chloride and water

Metal substrate

Passivation of metal surface due to reaction with substrate

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Dynasylan® SIVO 160 Designed to be Formulated

Formulation

Thinnable with water and polar organic solvents Compatible with other silane systems

Stability

Dynasylan® SIVO 160 is stable in acidic aqueous solutions (pH < 7) Shelf life: 1 year

Dynasylan® SIVO 160

Films properties

SIVO 160 films are very thin (0,1 to 1 m) and transparent Films are homogeneous Drying at 30 to 80 °C High crosslinking density

Compatibility with topcoats

SIVO 160 is compatible with liquid and powder coatings Wide range of topcoats possible

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Technical Features: Dynasylan® SIVO 160

Low viscosity liquid (9 mPa·s) Solid content: 9 % Water-based Active ingredient: Polymeric silane Solvent-free pH ~4.0 ­ 4.6 Shelf life: 1 year

Dynasylan® SIVO 160

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Advantages of Dynasylan® SIVO 160

Improved wetting on substrate and pigments Polymeric nature Improved adhesion to surface Forms a homogeneous surface layer

Water-borne

Expensive solvent abatement systems not needed Can be used in existing equipment

Silane-based

Heavy-metal-free Organic-Inorganic binder system

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A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

Example Application of Dynasylan® SIVO 160 on Aluminum

Alkaline degreasing

60°C midly alkaline

Deionized water rinse

Acidid pickling

H2SO4 (1%)

Deionized water rinse

Curing

Coating Application

Drying

(room temperature to 60°C)

Treatment with a Formulation containing Dynasylan® SIVO 160

Spraying Immersion

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Corrosion Protection on Aluminum with Epoxy Powder Coating

Substrate:

Aluminum 500 h CASS (copper accelerated salt spray) Blank Chromated SIVO 160

Degreasing:

Alkaline degreasing Acid pickling

Pre-treatment:

Dynasylan® SIVO 160 formulation Pre-dried at 60 °C, 10 min

Topcoat:

Epoxy/polyester powder coating, 60 Cured at 180 °C, 10 min

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Corrosion Protection on Magnesium with Polyester Powder Coating

Substrate:

Magnesium Blank 1000 h CASS Chromated SIVO 160

Degreasing/Cleaning:

Alkaline degreasing Dynasylan® SIVO 160 applied after alkaline degreasing (no acid pickling)

Pre-treatment:

Dynasylan® SIVO 160 formulation Pre-dried at 60 °C, 10 min

Topcoat:

Polyester powder coating, 60 Cured at 180 °C, 10 min

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160 Page 21 Seite | 21

Blank Corrosion Protection of Dynasylan® SIVO 160 as Sealer

Substrate:

Hot dip galvanized steel with chemical passivation 250 h salt spray HDG passivated SIVO 160

Degreasing:

Ethyl acetate

Treatment:

Dipping in SIVO 160 formulation Cured at room temperature Layer thickness: ~ 1.0 m

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160 Page 22 Seite | 22

Outline

Dynasylan® Silane Systems Dynasylan® Primers and Binders Dynasylan® SIVO 160 Conclusions

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Key Features: Dynasylan® SIVO 160

Low curing temperature: 60° to 80 °C depending on system

Free of heavy-metals or fluoride

Waterborne

Flexible formulating capabilities: as resin as additive

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Conclusions

Dynasylan® silanes adhere well to metal surfaces

Dynasylan® silanes react with the metal surface

Dynasylan® silanes are excellent for the formulation metal treatment systems

Dynasylan® silanes can be used as additive, resin or primer

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Dynasylan® HYDROSIL and SIVO® SOL Technology

Like a green centipede

No VOC

O

Si

Si O OH O

Si

O

Si

O

H

R1

R2

R3

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A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

A New Water-Borne Inorganic Resin That Cures at Low Temperature Dynasylan® SIVO 160

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Information

Dynasylan SIVO 160

27 pages

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