Composites based on waste products from the production of 5-hydroxymethylfurfural - "humins" and melamine or urea (as a cross-linking agent) with wood fl our filler, 70 % by weight) were obtained. Studies physical mechanical properties materials different contents have been carried out, which shown that composites humins: (2,5: 1) humins:urea (2:1) tensile strength 150 165 MPa, respectively, si...

The manufacturing of novel melamine-formaldehyde rigid foam material, by blowing the (MF) resin emulsion with pentane and further catalytic thermal curing, is presented in this work. process foaming described terms particular parameters, which are; proportions blowing, emulsifying agents. examination foam, SEM images, shows that pore sizes are range from 150 to 250 µm. characterization obtained...

Iodine sorption by polyurethane (PU) and melamine-formaldehyde (MF) foams was studied using both iodine sublimation and iodine solutions with hexanes and toluene. In the sublimation process, the diffusion kinetics was investigated and the interaction between iodine and PU foams was characterized by DSC, TGA, Raman spectroscopy and electrical conductivity measurements. In the solution process, t...

We have successfully synthesized relatively monodisperse and cross-linked melamine-formaldehyde (MF) microspheres by dispersed polycondensation and subsequent pH adjustment with serum replacement cleaning. The average particle sizes ( : weight-average and : number-average), the polydispersity index ( ), the number of particles Np, and the gel content of the M-F microspheres were observed by var...

To effectively improve the strength of Plectocomia pierreana rattan cane without reducing its toughness, the cane was impregnated with a new water-soluble melamine-urea-formaldehyde (MUF) resin modified with low-molecular-weight polyethylene glycol (PEG), marked as PMUF. The PMUF synthetic process was optimized using an orthogonal test L9(3). Results showed that the dimensional stability, densi...