Self-flame-retardant aqueous polyurethane industrial wood lacquer
Technical field
The invention belongs to the polyurethane coating technical field, particularly self-flame-retardant aqueous polyurethane industrial wood lacquer.
Background technology
Advantages such as polyurethane industrial wood lacquer has the hardness height, and sticking power is good, wear resistance is good, fast drying, paint film light is plentiful are widely used in the protection and the decoration of products such as furniture, wood artwork.But do not have the polyurethane material of anti-flaming function to discharge toxic gases such as HCN, CO in combustion processes, great potential safety hazard is arranged, the polyurethane material with anti-flaming function is subjected to extensive concern.
Korea S KR 20090017123A patent disclosure a kind of preparation method of flame-proof thermoplastic polyurethane, its anti-flaming function obtains by adding fire retardant such as phosphinate and trimeric cyanamide urate.Though the flame retardant effect that this method that adds the small molecules fire retardant can obtain to expect, but owing to there is not the flame retardant additive levels of reactive behavior bigger, wherein melamine cyanurate consumption 〉=25 part often cause the mechanical property of paint film and the decline of hardness of paint film.And oiliness urethane needs a large amount of solvents, does not meet environmental requirement.
China CN 101143988A patent disclosure a kind of water anti-flaming carpentry paint.The base-material of this water anti-flaming carpentry paint is an acrylic ester emulsion, though have good flame retardant efficiency and decorative effect.But still be to add fire retardant, and there is the shortcoming of " hot sticky cold crisp " in the base-material polyacrylic ester, limited its application at aspects such as industrial wood lacquers.
Summary of the invention
The purpose of this invention is to provide a kind of self-flame-retardant aqueous polyurethane industrial wood lacquer that can reach " promptly putting out " requirement, with the security and the feature of environmental protection of improving the conventional urethane woodwork coating from fire.
Its technical scheme is: a kind of self-flame-retardant aqueous polyurethane industrial wood lacquer, it is characterized in that it is made by following parts by weight of raw materials: polycarbonate type aqueous polyurethane emulsion 75-85, film coalescence aid 6-10, flow agent 0.1-0.2, wetting agent 0.05-0.3, thickening material 0.1-0.3, wax emulsion 1-3, deionized water 8-10.
Above-mentioned polycarbonate type aqueous polyurethane emulsion is one or both in negatively charged ion polycarbonate type aqueous polyurethane emulsion, positively charged ion polycarbonate type aqueous polyurethane emulsion, nonionic polycarbonate type aqueous polyurethane emulsion, negatively charged ion nonionic polycarbonate type aqueous polyurethane emulsion and the positively charged ion nonionic polycarbonate type aqueous polyurethane emulsion.
Above-mentioned film coalescence aid is one or both in N-Methyl pyrrolidone, propyl group phenylate and the butyl glycol ether.
Above-mentioned wetting agent is one or both in polyacrylic acid sylvite, polyacrylic acid sodium salt, polyacrylic acid aluminium salt and the polyoxyethylene.
Above-mentioned flow agent is one or both in polyether-modified polysiloxane, N-BUTYL ACETATE Mierocrystalline cellulose, soluble cotton and the polyvinyl butyral acetal.
Above-mentioned thickening material is one or both in aerosil, Natvosol and the polyvinylpyrrolidone.
Above-mentioned wax emulsion is one or both in paraffin, polythene wax emulsion and the tetrafluoroethylene wax emulsion.
Self-flame-retardant aqueous polyurethane industrial wood lacquer of the present invention is a base-material with the aqueous polyurethane emulsion, cooperates other auxiliary agents to make.With existing flame retardant type industrial wood lacquer relatively, self-flame-retardant aqueous polyurethane industrial wood lacquer of the present invention under the condition that does not add fire retardant, realized from fire promptly put out, the purpose of safety and environmental protection; And its mechanical property and ageing-resistant performance excellence, good decorating effect is applicable to the decoration of aspects such as furniture, wood artwork.
Embodiment
Embodiment 1.Negatively charged ion polycarbonate type aqueous polyurethane emulsion with 80kg, add dispersion tank, the propyl group phenylate that when rotating speed is 400 rev/mins, adds 7.5kg while stirring, continue to stir after 10 minutes, add soluble cotton 0.15kg, polyacrylic acid sylvite 0.2kg, improve about rotating speed to 800 and mixed high speed dispersion 20-30 minute, aerosil 0.15kg will be added then about speed drop to 500 rev/min, add paraffin 2kg and deionized water 9.5kg after blending dispersion 10-20 minute, 400 rev/mins were stirred 10 minutes, filtered at last, test package gets product.
Embodiment 2.Nonionic polycarbonate type aqueous polyurethane emulsion with 80kg, add dispersion tank, the butyl glycol ether that when rotating speed is 400 rev/mins, adds 7.5kg while stirring, continue to stir after 10 minutes, add N-BUTYL ACETATE Mierocrystalline cellulose 0.15kg, polyacrylic acid sodium salt 0.2kg, improve about rotating speed to 800 and mixed high speed dispersion 20-30 minute, Natvosol 0.15kg will be added then about speed drop to 500 rev/min, add polythene wax emulsion 2kg and deionized water 9.5kg after blending dispersion 10-20 minute, 400 rev/mins were stirred 10 minutes, filtered at last, test package gets product.
Embodiment 3.Positively charged ion polycarbonate type aqueous polyurethane emulsion with 80kg, add dispersion tank, the N-Methyl pyrrolidone that when rotating speed is 400 rev/mins, adds 7.5kg while stirring, continue to stir after 10 minutes, add polyether-modified polysiloxane 0.15kg, polyacrylic acid aluminium salt 0.2kg, improve about rotating speed to 800 and mixed high speed dispersion 20-30 minute, polyvinylpyrrolidone 0.15kg will be added then about speed drop to 500 rev/min, add tetrafluoroethylene wax emulsion 2kg and deionized water 9.5kg after blending dispersion 10-20 minute, 400 rev/mins were stirred 10 minutes, filtered at last, test package gets product.
Embodiment 4.The nonionic polycarbonate type aqueous polyurethane emulsion of 40kg and the positively charged ion polycarbonate type aqueous polyurethane emulsion of 40kg are added dispersion tank, the propyl group phenylate that when rotating speed is 400 rev/mins, adds 7.5kg while stirring, continue to stir after 10 minutes, add polyvinyl butyral acetal 0.15kg, polyoxyethylene 0.2kg, improve about rotating speed to 800 and mixed high speed dispersion 20-30 minute, Natvosol 0.15kg will be added then about speed drop to 500 rev/min, add polythene wax emulsion 2kg and deionized water 9.5kg after blending dispersion 10-20 minute, 400 rev/mins were stirred 10 minutes, filtered at last, test package gets product.