Entity

Time filter

Source Type


Li P.,Jiangsu University | Ren H.,Jiangsu University | Qiu F.,Jiangsu University | Xu J.,Jiangsu University | And 6 more authors.
Polymer - Plastics Technology and Engineering | Year: 2014

A series of graphene oxide-modified waterborne polyurethane-acrylate (GEO/WPUA) hybrids were prepared and characterized by FT-IR, SEM, TEM and XRD. The result shows that graphene oxide in the hybrid has good dispersion. The mechanical property, thermal stability and water resistance of hybrids with different content of GEO were investigated. The results indicate that GEO/WPUA films have bigger tensile strength and hardness than pure WPUA. When the content of GEO is 0.015%, the hybrid has the best water resistance. The obtained GEO/WPUA hybrids have great potential application such as coatings, leather finishing, adhesives, sealants, plastic coatings and wood finishes. © 2014 Taylor & Francis Group, LLC. Source


Dai Y.T.,Jiangsu University | Qiu F.X.,Jiangsu University | Xu J.C.,Jiangsu University | Xu J.C.,Zhenjiang College | And 5 more authors.
Plastics, Rubber and Composites | Year: 2014

In this work, the waterborne graphene oxide/polyurethane-acrylate (GO-WPUA) oligomer wasprepared based on isophorone diisocyanate (IPDI), polyether polyol (NJ-220), graphene oxide(GO), dimethylol propionic acid (DMPA) and hydroxyethyl methylacrylate (HEMA). A series of theUV-curable waterborne graphene oxide/polyurethane-acrylate composites containing differentcontent of GO were obtained with oligomer, monomers (BA and TPGDA) and photoinitiatorDarocur 1173. The structure, viscosity, particle size and surface tension of emulsions weremeasured. Some mechanical performances, solvent resistance, the water absorption and thermalproperty of films were investigated. When the content of GO is 0̇01%, the UV-curable film has thebest mechanical property. The obtained composites have great potential application such ascoatings, leather finishing, adhesives, sealants, plastic coatings and wood finishes. © Institute of Materials, Minerals and Mining 2014 Published by Maney on behalf of the Institute. Source


Dai Y.,Jiangsu University | Qiu F.,Jiangsu University | Wang L.,Jiangsu University | Zhao J.,Jiangsu University | And 4 more authors.
E-Polymers | Year: 2014

UV-curable electromagnetic shielding composite films (UV-EMSF) were prepared with graphene oxide/polyurethane-acrylate (GO-PUA) oligomers, different diluents (styrene-butyl acrylate or tripropylene-glycol diacrylate-butyl acrylate or trimethylol propane triacrylate-butyl acrylate) and photoinitiator (2-hydroxy-2-methyl-1-phenyl-1-propanone). The chemical structures, morphology, crystallinity and thermal behavior of UV-EMSF were investigated by Fourier transform-infrared spectroscopy, scanning electron microscope, X-ray diffraction and thermogravimetric analysis. The stability, optical transparency and electrical conductivity of emulsions were measured. The effects of different diluents on the properties such as gel content, solvent resistance, hardness, tensile strength, contact angle and adhesion force were systemically studied. It was found that the emulsions had a good stability and the electrical conductivity of the emulsions indicated that the addition of GO had an effect on the electric conductivity. The prepared UV-EMSF composites with low-cost, low pollution and easy-to-prepare low resistivity have a great potential application in different areas such as electronic, electrical, communications, plastic coatings and wood finishes. Source


Dai Y.,Jiangsu University | Qiu F.,Jiangsu University | Wang L.,Jiangsu University | Zhao J.,Jiangsu University | And 4 more authors.
Journal of Polymer Engineering | Year: 2015

A series of UV-cured electromagnetic shielding composites (UV-EMSC) containing different content of graphene oxide (GO) were prepared with oligomer, acrylate active diluents and different photoinitiators (Darocur 1173, Irgacure 184 or Irgacure 651). To fabricate conductive oligomer with low resistivity, polyurethane-acrylate (PUA) was used as the polymer matrix to help construct two-dimensional conductive networks consisting of GO. For forming conductive network structure, the surface functional groups (-OH, -COOH) of GO served as slightly conductive particles bonded with -NCO from the chain of polyurethane. The UV-EMSC exhibited a low resistivity of approximately 402 Ω·cm and an outstanding enhanced electrical conductivity of 249 mS/m at a GO content of 0.0200%. The effects of different photoinitiators on the properties of UV-cured films were investigated. The results indicate that the prepared UV-EMSC has great potential applications in different regions, such as in coatings of electronic, electrical, communications, plastic coatings and wood finishes. © 2015 by De Gruyter. Source

Discover hidden collaborations