Flame-retarding liquid and preparation method of flame-retarding liquid

Abstract

The invention discloses flame-retarding liquid and a preparation method of the flame-retarding liquid. The flame-retarding liquid is prepared from the following components in parts by weight: 100 parts of water-soluble polyesteramide, 30 to 100 parts of starch, 1 to 5 parts of phosphomolybdic acid, 1 to 3 parts of nickel aminosulfonate, 40 to 60 parts of melamine, 80 to 180 parts of phytic acid, 20 to 35 parts of ethylene urea, 400 to 700 parts of water and 80 to 185 parts of sodium methyl silicate through mixing and reacting. The preparation method can be implemented according to the following steps: mixing the melamine, the phytic acid, the ethylene urea and the water and reacting; then adding the water-soluble polyesteramide, the starch, the phosphomolybdic acid and the nickel aminosulfonate and heating to carry out the second time of reaction; then adding the sodium methyl silicate, and cooling and carrying out the third time of reaction; finally, ageing and standing at room temperature, and filtering to remove dreg. The flame-retarding liquid disclosed by the invention is water-based flame-retarding liquid and does not contain halogen and aldehydes substances; the flame-retarding liquid is used as a flame-retarding coating and has good flame-retarding and weather-resisting performances.

Description

technical field [0001] The invention relates to the technical field of flame retardant and fire protection, in particular to a flame retardant liquid and a preparation method thereof. Background technique [0002] Liquid substances with flame retardant and fireproof functions can be called flame retardant liquids. Flame retardant liquid mainly plays the role of flame retardant and fire prevention through dipping, coating, spraying and curing wrapping, etc. It has extensive and important applications in the aspects of coating flame retardant, interlayer fire prevention and flame retardant finishing. Water-based flame retardant fluids have the advantages of wide sources, low cost, environmental protection, high adhesion to polar substrates, and impregnation, and have been favored in this field. [0003] So far, there are roughly four types of water-based flame retardant fluids: (1) The liquid composite system based on hydrated sodium silicate has the advantages of low cost, n...

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Problems solved by technology

[0003] So far, there are roughly four types of water-based flame retardant fluids: (1) The liquid composite system based on hydrated sodium silicate has the advantages of low cost, no aldehyde pollution, and the ability to form an inorganic film on the surface of the flame retardant. However, the weather resistance of this system is relatively poor, which shows that the cured flame retardant coating is prone to pan-alkali and brittle and cracks when it is damp; (2) a liquid composite system based on ammonium polyphosphate and amino resin, and the amino resin is mainly urea-formaldehyde resin , melamine resin or phenol or melamine modified products of the above resins. This kind of flame retardant liquid has the advantages of wide sources, good flame retardant performance, and high cost performance, but it contains aldehydes, which cause volatile pollution and contact toxicity. (3) Liquid composite system based on ammonium polyphosphate and non-aldehyde resins such as water-based polyurethane and / or water-based acrylic acid; (4) Liquid composite system based on ammonium polyphosphate and inorganic silicon, boron or rare earth compounds

The latter two types of flame retardant liquids have the advantages of being green, harmless or low-toxic and pollution-free, but they not only have complicated preparation processes and high application costs, but also cannot exert ideal flame-retardant effects in most occasions, and often need to be combined with other System synergies

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