Waterborne polyurethane and modified polyurethane acrylate composites

• Published in: Plastics, rubber & composites Vol. 39; no. 10; pp. 454 - 459
• Main Authors: Qiu, F. X., Zhang, J. L., Wu, D. M., Yang, D. Y.
• Format: Journal Article
• Language: English
• Published: London, England Taylor & Francis 01.12.2010; SAGE Publications; Maney
• Subjects: ACRYLATE; Acrylates; Applied sciences; Dispersions; Exact sciences and technology; Finishes; Mechanical properties; MECHANICAL PROPERTY; MODIFICATION; Organic polymers; Physicochemistry of polymers; Polycondensation; Polymer matrix composites; POLYURETHANE; Polyurethane resins; Preparation, kinetics, thermodynamics, mechanism and catalysts; Propionic acid; Rubber; Wood; POLYURETHANE; ACRYLATE; MECHANICAL PROPERTY; MODIFICATION; Modification; Transparency; Property composition relationship; Butyl acrylate copolymer; Polyaddition; Solvent resistance; Thermal stability; Optical properties; Surface properties; Acid copolymer; Chemical properties; Polymer blends; Methyl acrylate copolymer; Mechanical property; Ester polymer; Mechanical properties; Experimental study; Urethane copolymer; Thermal properties; Particle size distribution; Preparation; Acrylate; Polyurethane; Surface tension; Aqueous dispersion
• ISSN: 1465-8011; 1743-2898
• DOI: 10.1179/174328910X12691245470194

Waterborne polyurethane (PU) and a series of PU acrylate (PUA) composite dispersions were synthesised from isophorone diisocyanate, polyester polyols, dimethylol propionic acid, hydroxyethyl methyl acrylate, butyl acrylate and methyl acrylate. Fourier transform infrared, ultraviolet visible and differential scanning calorimetry were used to demonstrate structures, optical transparency and thermal stabilities of PU and PUA. The PUA sample had lower glass transition temperature of hard segment and higher decomposition temperature than the PU sample. Performances of the dispersion and film were studied by means of apparent viscidity, particle size and particle size distribution index, surface tension and mechanical property. The results indicated that the solvent resistance and mechanical property of PUA film were improved compared with the pure PU film. The obtained stable PUA composite samples have excellent integrated properties and have a great potential application in meeting the highly diversified demands in modern technologies, such as coatings, leather finishing, adhesives, sealants, rubbers, plastic coatings and wood finishes.