Seamless water-based foam wallpaper and preparation method thereof
A water-based, foam-walled technology, used in paper, papermaking, special paper, etc., can solve the problems of easy discoloration, not scrubbing resistance, easy to absorb moisture and mildew, and achieve excellent anti-discoloration effect.
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[0012] The invention provides a preparation method of seamless water-based foam wallpaper, comprising:
[0013] 1) mixing polyacrylic acid with a pigment, then printing on the surface of the base layer and drying to form a printing layer;
[0014] 2) Mix and foam the water-based foaming resin, foaming agent, leveling agent and stabilizer, then transfer to the surface of the printing layer for curing and drying to form a process layer;
[0015] Wherein, the base layer is a non-woven fabric base layer, a cloth base layer or a paper base layer, and the water-based foaming resin is selected from polyacrylic acid and / or polyurethane.
[0016] In step 1) of the present invention, the consumption of the raw material in the printing layer can be selected in a wide range, but in order to make the prepared wallpaper have more excellent anti-tarnish, scrub resistance, moisture-proof and anti-mildew properties; preferably Specifically, based on the total weight of the printing layer, the...
Embodiment 1
[0031] 1) Mix polyacrylic acid (weight-average molecular weight 1000) and pigments at a weight ratio of 92:8 at 25°C for 15 minutes, then print on the surface of the base layer (thickness 25 filaments, width 3m, non-woven fabric base layer) and Dry at 170°C for 1 min to form a printing layer (thickness is 3 filaments);
[0032] 2) Water-based foaming resin (weight average molecular weight is 2500, polyacrylic acid), foaming agent (1-benzoyl-2-p-toluenesulfonyl hydrazide), leveling agent (silicone oil) and stabilizer (sub- Methyl phosphate) was mixed at 25°C for 0.8h at a weight ratio of 100:10:1:1.5, and foamed at 180°C for 0.7h, then transferred to the surface of the printing layer and cured at 130°C for 8min, 160°C Dry for 8 minutes to form a process layer (thickness is 35 silk) to make wallpaper A1.
Embodiment 2
[0034] 1) Mix polyacrylic acid (weight-average molecular weight 500) and pigments at a weight ratio of 90:10 at 15°C for 5 minutes, then print on the surface of the base layer (thickness: 20 filaments, width: 2m, cloth base layer) and place on Dry at 120°C for 0.5min to form a printing layer (thickness is 1 wire);
[0035] 2) Water-based foaming resin (weight average molecular weight is 1000, polyurethane), foaming agent (1-p-methylbenzoyl-2-benzenesulfonyl hydrazide), leveling agent (urea-formaldehyde resin) and stabilizer (ring Oxygenated soybean oil) was mixed at 15°C for 0.5h at a weight ratio of 100:5:0.5:1, and foamed at 170°C for 0.5h, then transferred to the surface of the printing layer and cured at 120°C for 5min, 120°C Dry for 5 minutes to form a process layer (thickness is 25 silk) to make wallpaper A2.
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