Formaldehyde-purifying decorative gypsum board and preparation method thereof
A technology for gypsum board and aldehyde removal, which is applied in the field of building materials, and can solve problems such as weak adsorption, difficulty in ensuring the effect of aldehyde removal, and difficulty in ensuring the effect
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[0035] The preparation method of the modified zeolite is as follows: soak the natural zeolite in 20% hydrochloric acid for 6h, filter; burn at 400°C for 1h, cool; take 20g of the treated zeolite in a 250ml beaker, add 100ml of deionized water and 50 ml of an alkyl dimethyl benzyl ammonium salt solution with a concentration of 10 mmol / L, and magnetically stirred for 4 h; the zeolite was washed with deionized water and air-dried naturally to obtain a modified zeolite. The particle size of the modified zeolite is 20-60 μm.
[0036] The amino acid is selected from one or more of proline, arginine, lysine, serine, glycine, cysteine hydrochloride, preferably, it is a mixture of proline and arginine.
[0037] The hyperbranched polyamide is selected from one or more of amino-terminated fully aliphatic, fully aromatic and aliphatic-aromatic hyperbranched polyamides, preferably, it is amino-terminated fully aromatic hyperbranched polyamide.
Embodiment
[0040] 1-15 parts by weight of aldehyde net agent, 100 parts by weight of plaster powder, 0.1-1 parts by weight of borate, 0.5-2.5 parts by weight of lignin, mechanically stirred to obtain a uniform solid powder; 0.01-1 parts by weight of The foaming agent is added to 70-90 parts by weight of water, and the mixed solution is foamed by the foaming system and then enters the mixer; the uniform solid powder is added to the mixer, and the raw materials are fully stirred by the mixer to obtain a uniform slurry, which is extruded , solidified, cut, and dried to obtain a gypsum board substrate; the surface of the gypsum board substrate is dedusted, rolled with water-based paint, and dried to obtain a net aldehyde decorative gypsum board.
[0041] Table 1 lists the data of some examples of the present invention. It should be noted that the data in Table 1 are part of the selected data during the experiment, and the embodiments of the present invention are not limited to the following da...
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