A kind of melamine resin, preparation method and melamine foaming liquid

Abstract

The invention discloses a melamine resin, a preparation method and a melamine foaming liquid. The resin is polymerized from raw materials including the following components: 100 parts by weight of melamine; 30-120 parts by weight of formaldehyde; 2-50 parts by weight of modified monomer; 0.5-5 parts by weight of functional compound; 1-3 parts by weight of catalyst . The melamine foaming solution comprises: 100 parts by weight of melamine resin; 1-10 parts by weight of surfactant; 1-15 parts by weight of foaming agent; 0-8 parts by weight of foam stabilizer; The present invention can make the density of foamed plastics in the range of 6-60kg / m 3 Controllable adjustment; the functional compound, especially the functional compound synthesized by the present invention can efficiently reduce the formaldehyde emission of the foamed plastics, making the formaldehyde emission of the foamed plastics <0.2mg / l (0.2ppm).

Description

technical field [0001] The invention relates to the field of melamine foamed plastics, and furthermore, relates to a melamine resin, a preparation method, and a melamine foamed plastic foaming liquid containing the melamine resin. Background technique [0002] Melamine foam is an intrinsically high flame-retardant foam material, because of its excellent sound absorption, noise reduction, heat insulation, high temperature resistance, low smoke rate, chemical corrosion resistance, convenient post-processing, etc. Its performance makes it widely used in more and more fields such as architectural decoration, public places, electromechanical equipment, and transportation vehicles. [0003] At present, the commonly used foam materials (such as polyurethane, polystyrene, etc.) not only have poor flame retardancy, but also produce a lot of smoke and toxic gases in a fire. According to statistics, more than 80% of fire deaths are related to inhalation of toxic fumes. Melamine foam ...

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Problems solved by technology

[0007] But the melamine foamed plastics in the prior art is all at 4~12kg / m because of its density 3 (density > 12kg / m 3 The foams are all prepared by secondary processing such as hot pressing), the residual free formaldehyde is at least 10ppm (10mg / l), and the rationality of the molecular structure design in the melamine foam production process is insufficient, so that some ether bonds in the melamine foam etc. may degrade under long-term environmental factors or heating conditions, and slowly release formaldehyde, resulting in serious shortage or even restricted

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