2 results about "Urea formaldehyde foam" patented technology

The present invention discloses a hydrophobic microporous urea-formaldehyde foam material and a preparation method thereof, which belong to the field of polymer chemical modification. The preparation of the above-mentioned urea-formaldehyde foam material includes the following raw materials: urea-formaldehyde resin modified by amphiphilic macromolecules, a foaming agent and a curing agent, the amphiphilic macromolecules including a hydrophilic end and a hydrophobic end, the hydrophilic end is used for reaction connection with the urea-formaldehyde resin, and the hydrophobic end is used for reaction connection with the foaming agent. The present invention connects the amphiphilic macromolecule bond to the urea-formaldehyde molecular network, so that it self-assembles in the urea-formaldehyde water-based system to form a micro-nano assembly structure with rich morphology; adjusts the affinity of the foaming agent and the hydrophobic chain segments in the assembly structure, induces the foaming agent to be dispersed in the hydrophobic chain segment aggregates of the assembly, and simultaneously regulates the foaming and curing process, restricts the nucleation and growth of the foam cells and fixes them inside or around the hydrophobic chain segment aggregates of the micro-nano assembly, exerts the strong hydrophobic coating effect of the hydrophobic chain segments on the bubble wall, gives the urea-formaldehyde foam a long-lasting hydrophobic function, and realizes the construction of a microporous structure.

The utility model discloses a titanium porcelain silicate decorative plate belongs to the technical field of decorative plate, titanium porcelain silicate decorative plate, titanium porcelain silicate decorative plate includes silicate fibre framework, first outer wrapping layer, second outer wrapping layer, and the inner middle part of silicate fibre framework is fixed with small silk screen, and is fixed with urea -formaldehyde foam block through small silk screen, and the outside of urea -formaldehyde foam block is fixed with large silk screen, first outer wrapping layer, second outer wrapping layer all are located the outside of large silk screen, and first outer wrapping layer, second outer wrapping layer are glued through high temperature resistance glue, and form the sealed package of silicate fibre framework outside, and the outside of first outer wrapping layer, second outer wrapping layer is sprayed titanium porcelain paint, and forms the dense titanium porcelain paint layer. It has total mass light, high temperature resistance, fire -resistant not flammable, resistant to enjoy etc. characteristics, can realize the effective recycling of silicate decorative plate, has improved the practical value of titanium porcelain silicate decorative plate.