Intumescent fire retardant and the method of its manufacture

摘要

The topic of this invention is an intumescent fire retardant and a method for its manufacture. The application of modifiers in the form of so-called “nano-particles” in intumescent systems improves the efficiency fire retardancy and the effectiveness of the system's thermal insulation. The high dispersion of particles influences the decomposition of intumescent systems and the combustion process. Therefore, the structure and thermal resistance of the carbon layer formed are improved.

主权项

1. An intumescent fire retardant agent based on condensed amine-formaldehyde resins and phosphorus compounds comprising:
(a) urea or melamine; (b) dicyanate diamide; (c) formaldehyde; (d) phosphoric acid or its nitrogen containing derivatives; (e) starch; (f) methoxylated or butoxylated melamine-formaldyde resin; (g) modifiers in the form of nanoscale silica molecules of 2 to 100 nanometers amounting to 1.21-5% of total condensate mass introduced during condensation of the amine-formaldehyde resin in solid form or as a colloidal dispersion; (h) low-order alcohols; and (i) a surface-active hydrating agent.