Production method for scientific and technological ecological impregnated paper
A production method and a technology of impregnating paper, which are applied in papermaking, paper, paper coating, etc., can solve problems such as adverse effects on the ecological environment and forest resources, poor use effects of home decoration, and effects on surface aesthetics, and achieve the elimination of bottoming and carbonization. The effect of optimization of impregnation process parameters and shortening of curing time
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[0019] Example 1
[0020] A production method of scientific and technological ecological impregnated paper, which includes the following steps:
[0021] (1) Preparation of urea-formaldehyde glue: Put 2500 kg of formaldehyde into the reactor and add polystyrene: melamine: 1,2-dimethylimidazole: sodium alkylbenzene sulfonate in a ratio of 15:20:3:0.3 The resulting accelerator is 15 kg and adjusted to pH 7.2 with sodium hydroxide solution, and then heated to 86-87°C, then stop heating and keep it for 20 minutes; add 20% formic acid in three times to adjust the pH to 4, the time interval is 5 minutes, the temperature It automatically rises to 93-96°C. After about 90 minutes, put the glue into 35°C water to detect the fog point. When white fog appears, add 35 kg of the above accelerator, and then adjust the pH to 5 with sodium hydroxide and start cooling. After the temperature drops to 60°C, add 550 kg of urea and 350 kg of water, and then lower the temperature to 35°C.
[0022] (2) Pre...
Example Embodiment
[0028] Example 2
[0029] A production method of scientific and technological ecological impregnated paper, which includes the following steps:
[0030] (1) Preparation of urea-formaldehyde glue: Put 2500 kg of formaldehyde into the reactor and add polystyrene: melamine: 1,2-dimethylimidazole: sodium alkylbenzene sulfonate in a ratio of 15:20:3:0.3 Add 15 kg of the accelerator and adjust the pH to 8 with sodium hydroxide solution, then heat to 86-87°C and stop heating for 20 minutes; add 20% formic acid in three times to adjust the pH to 4.6, the time interval is 10 minutes, the temperature It automatically rises to 93-96°C. After about 90 minutes, put the glue into 35°C water to detect the fog point. When white fog appears, add 35 kg of the above accelerator, and then adjust the pH to 8 with sodium hydroxide and start cooling. After the temperature drops to 60°C, add 550 kg of urea and 350 kg of water, and then lower the temperature to 35°C.
[0031] (2) Preparation of triamine gl...
Example Embodiment
[0037] Example 3
[0038] A production method of scientific and technological ecological impregnated paper, which includes the following steps:
[0039] (1) Preparation of urea-formaldehyde glue: put 2500 kg of formaldehyde into the reactor, add polystyrene: melamine: 1,2-dimethylimidazole: sodium alkylbenzene sulfonate in a ratio of 15:20:3:0.3 Add 15 kg of the accelerator and adjust the pH to 7 with sodium hydroxide solution, then heat to 86-87°C and stop heating for 20 minutes; add 20% formic acid in three times to adjust the pH to 4.5, the time interval is 8 minutes, the temperature It automatically rises to 93-96°C. After about 90 minutes, put the glue into 35°C water to detect the fog point. When white fog appears, add 35 kg of the above accelerator. Then adjust the pH to 7 with sodium hydroxide and start cooling. After the temperature drops to 60°C, add 550 kg of urea and 350 kg of water, and then lower the temperature to 35°C.
[0040] (2) Preparation of triamine glue: put ...
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