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Polyurethanes and Polymeric Binders

Research areas


  • Synthesis of moisture-curable and water-dispersible polyurethanes and silicone-urethanes

  • Polyurethane, silicone-urethane, urethane-acrylic, silicone-acrylic and alkyd-acrylic aqueous dispersions, in particular in coating applications

  • Processes of emulsion polymerization and their modernization

  • Modification of asphalts, coal tar pitches and hydrocarbon resins with isocyanates

  • Associative polyurethane thickeners

  • Ageing and application studies of adhesives, coatings, sealants and compositions

  • Binders for solventless and aqueous dispersion-based uv-curable coatings

  • Polymeric nanopowders as impact modifiers for powder coatings, and also resins and plastics

  • Silicone-urethanes as scaffolds for live cells

  • Silicone-urethanes as solid polymer electrolytes for lithium batteries

  • Silicone-urethanes as membranes for separation of liquid and gaseous mixtures

  • New curing agents for polyurethane coatings

  • Polymeric plasticizers for PVC

  • Reticulated vitreous carbon (RVC)

  • Self-healing polymer coatings

  • Polymer materials applied in 3D printers.


Experience


High experience in development and implementation of technological processes of:

  • Polyurethane and silicone-urethane elastomers for various applications

  • Polyurethane and polyurethane-bitumen materials for use in building industry for filling and sealing joints, and for making hydroinsulating coats

  • Aqueous polyurethane and hybrid dispersion systems,in paricular as binders for coatings

  • Emulsion polymerization and copolymerization.


We are also experienced in studies on new methods of synthesis of various polymers used as binders for paints, varnishes, sealants and adhesives, in investigations on the effect of chemical structure and composition on physical and application properties of various polymer systems and compositions and in testing the properties of coatings (paints and varnishes).


Equipment


  • Bohlin CVO 100 Rheometer (Bohlin Instruments Ltd) for determinations of dynamic viscosity of liquids, viscosity and shear stress vs. shear rate, yield stress. Investigations of curing processes of resins according to ASTM D 4473-01.

  • Apparatus for investigations of curing and gelling processes - SVNC (Scanning Vibrating Needle Curemeter) from Rapra Technology Ltd. allowing for controls of the curing process of polyurethane, silicone, polysulphide, epoxy or unsaturated polyester resins and other curable resins.

  • Pendulum Hardness apparatus (Model 299/300 from Erichsen Testing Equipment Gmbh&Co KG) for determination of relative hardness of coatings on glass substrate or (in cases justified e.g. due to the specific method of coating application) on metallic substrate, according to PN-79/C-81530 standard.

  • Apparatus for determination of white point temperature and minimum film forming temperature - Coesfeld Material Test Gradient Plate Thermostair Model MFT.20F, allowing for controls of film formation from aqueous dispersions of polymers and copolymers according to PN-90/C-89415 standard.

  • Rotation viscometer Brookfield Model HB DV II CP, allowing for determination of apparent viscosity of polymers in a state of melt, dispersion or solution according to PN-ISO 2555:1999.

  • Chamber for uv-curing UVALOC 1000 type G 2001 from Loctite. Application - for determination of uv-curing ability of coatings and adhesives or other resins (according to the in-house procedure), modification of the plastics surface using uv irradiation, studies on new kind of uv-curable binders for coatings.

  • Accelerated ageing chamber containing uv fluorescence lamps and moisture condensation unit UV2000 (ATLAS), allowing for cyclic uv irradiation and moisture condensation (without simultaneous irradiation) treatments of various materials. It is primarily used for selecting tests applied for elimination of coatings which do not meet weatherability requirements.

  • Climatic chambers: Feutron chamber (type 3423/15), Mytron chamber (model KPK 60), Sanyo chamber (model CF 4). Application - ageing tests in summer and winter conditions (constant temperature and humidity inside the chambers) or in changing conditions following the cycles, conditioning of samples at constant temperature and humidity according to the product standard (before testing the sample according to the standardized method), investigations of moisture-curable polymers.

  • Apparatus for determination of percentage of open and closed pores in the rigid foams. The test comprises determination of the geometric sample volume followed by determination of the sample volume that is not transparent for air. The method is consistent with PN-ISO 4590:1994, item 4.

  • Differential Scanning Calorimeter Q2000 from TA Instruments with liquid nitrogen cooling system (LNCS). Range of measurement: -180 oC do 300 oC. Determination of temperature and heat of chemical and physical transformations for polymers and other substances. Measurements are consistent to PN-EN ISO 11357 standard.


    Equipment for testing the substantial properties of coating binders and coatings using the following methods:

    • Determination of viscosity according to PN-81/C-81508 (Ford cups)

    • Determination of drying time and drying stage according to PN-79/C-81519

    • Determination of elasticity of coatings through bending according to PN-76/C-81528

    • Determination of adhesion of coatings according to PN-80/C-81531

    • Determination of water resistance of coatings according to PN-76/C-81521

    • Determination of mechanical stability of aqueous dispersions and suspensions using rotary separator at temperature range -10oC - +40oC and up to 18 000 rpm

    • Determination of sedimentation of aqueous dispersions according to BN-74/6531-01

    • DSC.


Contact

Janusz Kozakiewicz, D. Sc., professor of ICRI
phone +48 22 568 23 78,

+48 22 568 25 64