Fraunhofer Institute for Wood Research Binders and Coatings
Services
Synthesis and development
Synthesis of monomers and polymers
- Customized modification of renewable raw materials such as sugars, fatty acids and lignins
- Polyesters, polyurethanes, alkyds, poly(meth)acrylates, sugar acrylates, polyitaconates, polyvinyl acetates, UV-crosslinking polymers
- Dispersions
- Functionalized and switchable polymers
Development of coatings
- Coatings on the basis of renewable raw materials
- Aqueous and solvent-containing coatings in accordance with Decopaint and VOC guidelines
- Interior coatings, exterior coatings
- Functional coatings (antimicrobial, hydrophobic, flame-retardant, adhesion to PE, PP)
Development of printing inks and 3D-printing materials
- UV-curable printing inks, thermoplastic screen-printing inks
- UV-curable 3D-printing materials for SLA, DLP and MJM
- Bio-based materials for FFM
Development of adhesives
- Dispersion adhesives
- Hotmelts / reactive hotmelts
- 1 and 2-component PUR adhesives
- UV-curable adhesives
- Formaldehyde-free amino resins
Application and testing methods
Coatings
- Coating laboratory with handling robot, equipped with modern application technology
- Roller coating
- Automatic film applicator
- UV/IR convection dryer
3D printing
- Production of filaments for FFM printing and printing of test specimens and small components
- UV printing using an SLA printer (13 x 13 x 18 cm, 405 nm, 70-micron laser)
Analytics
- Determination of viscosities in accordance with DIN 53019, DIN EN ISO 2884-1, DIN EN ISO 2431
- Determination of density in accordance with DIN EN ISO 2811, DIN 53217
- Determination of particle size and zeta potential
- Measurements using UV/VIS spectrophotometer with integrating sphere in the wave range from 280 to 720 nm
- Determination of molar mass and molar mass distribution
- Determination of surface tension
- Determination of minimum film-forming temperature in accordance with DIN ISO 2115
- Adhesive analytics: We implement a range of methods for the characterization of reactive resins such as UF, MUF, PF and other adhesive systems. Listed below is a selection of analytical methods which we offer to our customers. Upon request, we are also able to offer further analytical methods.
Properties |
Areas of application |
Method |
|---|---|---|
Molar ratio U:F |
UF / MUF |
According to Kjehldahl |
Free formaldehyde |
UF / MUF / PF / PRF / MUPF |
DIN EN 1243 |
Free isocyanate |
PMDI / PUR |
DIN EN 1242 |
Gel time |
All adhesives |
DIN 16945, DIN 16916 |
Viscosity |
All adhesives |
DIN 12092 / ISO 2555 |
Average molar mass ratio/chain length |
UF / MUF |
DIN 55672 |
Acid value |
All adhesives |
DIN EN 1241 |
Minimum film-forming temperature |
Dispersion adhesives |
DIN ISO 2115 |
Pot life |
All adhesives |
DIN EN 14022 |
Water tolerance |
UF /MUF / PF / Dispersion adhesives |
|
Alkali content |
PF / PRF |
DIN EN 1240 |
Melting point/softening range |
All adhesives |
DIN EN ISO 10363 |
Heat capacity/reaction heat |
All adhesives |
By means of DSC |
Determination of composition |
All adhesives |
TGA-FTIR-MS analysis |
Test procedure
- Natural weathering (45° and 90°) and artificial weathering (QUV, XENON)
- Mechanical, chemical and physical measuring methods, including temperature-dependent stress-strain diagrams, DMA, FTIR microscopy, paint analysis, MFT, pendulum hardness
- Product testing and monitoring
- Development of new methods for the determination of paint aging
- Committee functions (CEN/TC 139/WG 2 and DIN NA 002-00-15 AA “Coatings for masonry”)
Natural and artificial weathering
Standard |
Group |
Title |
|---|---|---|
| DIN EN 927-3 | Paints and varnishes | Coating materials and coating systems for exterior wood - Part 3: Natural weathering test |
DIN EN 927-6 |
Paints and varnishes |
Paints and varnishes - Coating materials and coating systems for exterior wood - Part 6: Exposure of wood coatings to artificial weathering using fluorescent UV lamps and water |
DIN EN ISO 2810 |
Paints and varnishes |
Paints and varnishes - Natural weathering of coatings - Exposure and assessment |
DIN EN ISO 4892-1 |
Plastics |
Methods of exposure to laboratory light sources - Part 1: General guidance |
DIN EN ISO 4892-2 |
Plastics |
Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps |
DIN EN ISO 4892-3 |
Plastics |
Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps |
DIN EN ISO 16474-2 |
Paints and varnishes |
Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps |
DIN EN ISO 16474-3 |
Paints and varnishes |
Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps |
Testing of coatings
Standard |
Group |
Title |
|---|---|---|
DIN 55653 |
Paints and varnishes |
Determination of settling |
| DIN 68861-1 | Furniture surfaces | Furniture surfaces – Part 1: Behaviour at chemical influence |
| DIN 68861-7 | Furniture surfaces | Furniture surfaces – Part 7: Behaviour subjection to dry heat |
| DIN 68861-8 | Furniture surfaces | Furniture surfaces – Part 8: Behaviour subjection to wet heat |
DIN EN 927-1 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Part 1: Classification and selection |
DIN EN 927-2 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Part 2: Performance specification |
DIN EN 927-3 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Part 3: Natural weathering test |
DIN EN 927-5 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Part 5: Assessment of the liquid water permeability |
DIN EN 927-6 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Part 6: Exposure of wood coatings to artificial weathering using fluorescent UV lamps and water |
DIN EN 927-7 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Part 7: Assessment of knot staining resistance of wood coatings |
DIN CEN/TS 927-8 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Part 8: Determination of the adhesion on wood after water exposure by a double-X-cut test |
DIN CEN/TS 927-9 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Part 9: Determination of pull-off strength after water exposure |
DIN EN 927-10 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Part 10: Resistance to blocking of paints and varnishes on wood |
DIN EN 927-11 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Part 11: Assessment of air inclusions/microfoam in coating films |
DIN EN 927-13 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Part 13: Assessment of resistance to impact of a coating on a wooden substrate |
| prEN 927-14 | Paints and varnishes | Paints and varnishes – Coating materials and coating systems for exterior wood - Determination of tensile properties of coating films |
DIN EN 16492 |
Paints and varnishes |
Evaluation of the surface disfigurement caused by fungi and algae on coatings |
| DIN EN 16755 | Fire protection coatings | Durability of reaction to fire performance - Classes of fire-retardant treated wood products in interior and exterior end use application |
DIN EN ISO 1522 |
Paints and varnishes |
Pendulum damping test |
DIN EN ISO 2409 |
Paints and varnishes |
Cross-cut test |
DIN EN ISO 2431 |
Paints and varnishes |
Determination of flow time by use of flow cups |
DIN EN ISO 2808 |
Paints and varnishes |
Determination of film thickness |
DIN EN ISO 2810 |
Paints and varnishes |
Natural weathering of coatings - Exposure and assessment |
DIN EN ISO 2811-1 |
Paints and varnishes |
Determination of density - Part 1: Pycnometer method |
DIN EN ISO 2813 |
Paints and varnishes |
Determination of gloss value at 20°, 60° and 85° |
DIN EN ISO 2884-1 |
Paints and varnishes |
Determination of viscosity using rotary viscometers - Part 1 |
DIN EN ISO 3251 |
Paints and varnishes and Plastics |
Determination of non-volatile-matter content |
DIN EN ISO 3668 |
Paints and varnishes |
Visual comparison of colour of paints |
DIN EN ISO 4624 |
Paints and varnishes |
Pull-off test for adhesion |
DIN EN ISO 4628-1 |
Paints and varnishes |
Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 1: General introduction and designation system |
DIN EN ISO 4628-2 |
Paints and varnishes |
Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 2: Assessment of degree of blistering |
DIN EN ISO 4628-3 |
Paints and varnishes |
Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 3: Assessment of degree of rusting |
DIN EN ISO 4628-4 |
Paints and varnishes |
Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 4: Assessment of degree of cracking |
DIN EN ISO 4628-5 |
Paints and varnishes |
Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 5: Assessment of degree of flaking |
DIN EN ISO 4628-6 |
Paints and varnishes |
Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 6: Assessment of degree of chalking by tape method |
DIN EN ISO 6504-3 |
Paints and varnishes |
Determination of hiding power of paints for masonry and concrete |
DIN EN ISO 7783 |
Paints and varnishes |
Determination of water-vapour transmission properties - Cup method |
DIN EN ISO 15184 |
Paints and varnishes |
Determination of film hardness by pencil test |
DIN EN ISO 16474-2 |
Paints and varnishes |
Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps |
DIN EN ISO 16474-3 |
Paints and varnishes |
Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps |
prEN 16492 |
Paints and varnishes |
Evaluation of the surface disfigurement caused by fungi and algae on coatings |
DIN CEN/TS 16358 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Assessment of air inclusions/microfoam in coating films |
DIN CEN/TS 16359 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Assessment of knot staining resistance of wood coatings |
DIN CEN/TS 1636 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Assessment of film extensibility by indentation of a coating on a wooden substrate |
DIN CEN/TS 16498 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Assessment of tannin staining |
DIN CEN/TS 16700 |
Paints and varnishes |
Coating materials and coating systems for exterior wood - Assessment of resistance to impact of a coating on a wooden substrate |
Testing of diverse materials
Standard |
Group |
Title |
|---|---|---|
DIN 19268 |
pH-measurement |
pH-measurement of aqueous solutions |
DIN EN 318 |
Wood-based panels |
Determination of dimensional changes associated with changes in relative humidity |
DIN EN 321 |
Wood-based panels |
Determination of moisture resistance under cyclic test conditions |
DIN EN 322 |
Wood-based panels |
Determination of moisture content |
DIN EN 438-2 |
High-pressure decorative laminates (HPL) |
Sheets based on thermosetting resins (usually called laminates) - Part 2: Determination of properties |
DIN EN 438-7 |
High-pressure decorative laminates (HPL) |
Sheets based on thermosetting resins (Usually called Laminates) - Part 7: Compact laminate and HPL composite panels for internal and external wall and ceiling finishes |
DIN EN 12086 |
Thermal insulating products for building applications |
Determination of water vapour transmission properties |
DIN EN 12087 |
Thermal insulating products for building applications |
Determination of long term water absorption by immersion |
DIN EN 12091 |
Thermal insulating products for building applications |
Determination of freeze-thaw resistance |
DIN EN 15534-1 |
Plastics (WPC / NFC) |
Composites made from cellulose-based materials and thermoplastics (usually called wood-polymer composites (WPC) or natural fibre composites (NFC)) - Part 1: Test methods for characterisation of compounds and products |
DIN EN 15534-4 |
Plastics (WPC / NFC) |
Composites made from cellulose-based materials and thermoplastics (usually called wood-polymer composites (WPC) or natural fibre composites (NFC)) - Part 4: Specifications for decking profiles and tiles |
DIN EN 15534-5 |
Plastics (WPC / NFC) |
Composites made from cellulose-based materials and thermoplastics (usually called wood-polymer composites (WPC) or natural fibre composites (NFC)) - Part 5: Specifications for cladding profiles and tiles |
DIN EN ISO 62 |
Plastics |
Determination of water absorption |
DIN EN ISO 291 |
Plastics |
Standard atmospheres for conditioning and testing |
DIN EN ISO 527 |
Plastics |
Determination of tensile properties |
DIN EN ISO 4892-1 |
Plastics |
Methods of exposure to laboratory light sources - Part 1: General guidance |
DIN EN ISO 4892-2 |
Plastics |
Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps |
DIN EN ISO 4892-3 |
Plastics |
Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps |
DIN EN ISO 6507 |
Metallic materials |
Vickers hardness test |
DIN EN ISO 8510 |
Adhesives |
Peel test for a flexible-bonded-to-rigid test specimen assembly - Part 2: 180 degree peel |
DIN EN ISO 11502 |
Plastics |
Determination of blocking resistance |
DIN EN ISO 11664 |
Colorimetry |
CIE standard colorimetric observers |
DIN EN ISO 12572 |
Thermal insulation of buildings and components |
Hygrothermal performance of building materials and products - Determination of water vapour transmission properties - Cup method |
DIN EN ISO 18314-1 |
Analytical colorimetry |
Analytical colorimetry - Part 1: Practical colour measurement |
prEN 16492 |
Paints and varnishes |
Evaluation of the surface disfigurement caused by fungi and algae on coatings |
DIN ISO 2115 |
Plastics |
Polymer dispersions - Determination of white point temperature and minimum film-forming temperature |
ISO 554 |
|
Standard atmospheres for conditioning and/or testing |
Damage analysis
The fast and unequivocal clarification of cases of damage to coated wood, wood bondings, wood-based materials and solid wood requires a combination of practical experience and specialized scientific methods. For damage analyses, we apply specific scientific and forensic methods and continuously develop these techniques further. Ongoing research as well as our participation on technical committees and in standardization bodies provides us with the latest findings at first hand. The experience gained from damage analyses also serves as a basis for the planning of new research projects.
- Analysis of defects in coatings, bondings, wood-based materials and solid wood
- Application of microscopic, spectroscopic, mechanical and forensic methods
- Clarification of claims for companies, courts and assessors