A kind of production method of scientific and technological ecological impregnated paper
A production method and technology for impregnating paper, which are applied to paper, papermaking, paper coatings, etc., can solve problems such as adverse effects on the ecological environment and forest resources, effects on surface aesthetics, and poor use effects on home decoration, and achieve the elimination of bottom penetration and carbonization. Optimization of impregnation process parameters and the effect of shortening curing time
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Embodiment 1
[0020] A production method of scientific and technological ecological impregnated paper, it comprises the following steps:
[0021] (1) Preparation of urea-formaldehyde glue: Put 2,500 kg of formaldehyde into the reactor, add polystyrene: melamine: 1,2-dimethylimidazole: sodium alkylbenzene sulfonate according to the ratio of 15:20:3:0.3 15kg of accelerant prepared in proportion and adjust pH value to 7.2 with sodium hydroxide solution, then heat to 86-87°C, stop heating, keep warm for 20min; add 20% formic acid three times to adjust pH value to 4, time interval is 5min , the temperature automatically rises to 93-96°C, and after about 90 minutes, put the glue into 35°C water to detect the fog point, and then add 35 kg of the above accelerator when white fog appears, and then adjust the pH value to 5 with sodium hydroxide and start Cool down, after the temperature drops to 60°C, add 550 kg of urea and 350 kg of water, and then cool down to 35°C.
[0022] (2) Preparation of mel...
Embodiment 2
[0029] A production method of scientific and technological ecological impregnated paper, it comprises the following steps:
[0030] (1) Preparation of urea-formaldehyde glue: Put 2,500 kg of formaldehyde into the reactor, add polystyrene: melamine: 1,2-dimethylimidazole: sodium alkylbenzene sulfonate according to the ratio of 15:20:3:0.3 15 kg of accelerant prepared according to the ratio, adjust the pH value to 8 with sodium hydroxide solution, then heat to 86-87°C, stop heating, and keep warm for 20 minutes; add 20% formic acid three times to adjust the pH value to 4.6, with a time interval of 10 minutes , the temperature automatically rises to 93-96°C, and after about 90 minutes, put the glue into 35°C water to detect the fog point, and then add 35 kg of the above-mentioned accelerator when white fog appears, and then adjust the pH value to 8 with sodium hydroxide and start Cool down, after the temperature drops to 60°C, add 550 kg of urea and 350 kg of water, and then cool...
Embodiment 3
[0038] A production method of scientific and technological ecological impregnated paper, it comprises the following steps:
[0039](1) Preparation of urea-formaldehyde glue: Put 2,500 kg of formaldehyde into the reactor, add polystyrene: melamine: 1,2-dimethylimidazole: sodium alkylbenzene sulfonate according to the ratio of 15:20:3:0.3 15 kg of accelerant prepared according to the ratio and adjust the pH value to 7 with sodium hydroxide solution, then heat to 86-87°C and stop heating, keep warm for 20 minutes; add 20% formic acid three times to adjust the pH value to 4.5, the time interval is 8 minutes , the temperature automatically rises to 93-96 °C, after about 90 minutes, put the glue into 35 °C water to detect the fog point, add 35 kg of the above accelerator when white fog appears, and then adjust the pH value to 7 with sodium hydroxide and start Cool down, after the temperature drops to 60°C, add 550 kg of urea and 350 kg of water, and then cool down to 35°C.
[0040]...
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