Impregnating method of fast growing wood
A technology of fast-growing wood and impregnating liquid, which is applied in the direction of wood impregnation, pressure impregnation, impregnation of wood, etc., which can solve the problems of waste in the use of liquid medicine, unstable wood lifting performance, long impregnation time, etc., and achieve the effect of reducing treatment costs
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Embodiment 1
[0020] 1.1 Production raw materials:
[0021] Formaldehyde 2910kg;
[0022] Urea 1770kg;
[0023] Sodium carboxymethyl cellulose 2.1kg;
[0024] Ammonia water 450kg;
[0025] Melamine 180kg;
[0026] Polyvinyl alcohol 6kg;
[0027] Hexamethylenetetramine 9kg;
[0028] Water 3214.8kg;
[0029] Wood 1 cubic meter.
[0030] 1.2 Production equipment: Pressure impregnation tank with a volume of 1300L.
[0031] 1.3 Liquid preparation:
[0032] 1.3.1 One-time feeding: add formaldehyde in the reaction kettle according to the ratio, first add 1221.3kg of urea, polyvinyl alcohol, ammonia water, hexamethylenetetramine, melamine, sodium carboxymethyl cellulose, and add sodium hydroxide to adjust the pH value to 7.5;
[0033] 1.3.2 Secondary urea: heat up to 85°C and keep for 10 minutes, then add 194.7kg of urea and keep for 10 minutes;
[0034] 1.3.3 Polycondensation reaction: Cool to 80°C and add formic acid to adjust the pH value to 5.8 for polycondensation reaction. When the...
Embodiment 2
[0051]2.1 Production raw materials:
[0052] Formaldehyde 3000kg;
[0053] Urea 1890kg;
[0054] Sodium carboxymethyl cellulose 2.55kg;
[0055] Ammonia water 360kg;
[0056] Melamine 200kg;
[0057] Polyvinyl alcohol 9kg;
[0058] Diethylene glycol 75kg;
[0059] Hexamethylenetetramine 15kg;
[0060] Water 10000kg;
[0061] Maltodextrin 750kg;
[0062] Wood Approx. 4.5 cubic meters.
[0063] 2.2 Production equipment: Pressure impregnation tank with a volume of 10000L.
[0064] 2.3 Preparation of liquid medicine:
[0065] 2.3.1 One-time feeding: add formaldehyde in the reaction kettle according to the ratio, first add 1323kg of urea, polyvinyl alcohol, ammonia water, hexamethylenetetramine, 300kg of water, melamine, sodium carboxymethyl cellulose, and add hydrogen Adjust the pH value to 8.0 with sodium;
[0066] 2.3.2 Secondary urea: heat up to 90°C and keep for 15 minutes, then add 170.1kg of urea and keep for 15 minutes;
[0067] 2.3.3 Polycondensation reaction:...
Embodiment 3
[0087] 3.1 Process raw materials:
[0088] Formaldehyde 3150kg;
[0089] Urea 1860kg;
[0090] Sodium carboxymethyl cellulose 2.7kg;
[0091] Ammonia water 360kg;
[0092] Polyvinyl alcohol 12kg;
[0093] Diethylene glycol 3kg;
[0094] Hexamethylenetetramine 15kg;
[0095] Melamine 207kg;
[0096] Water 21293.5kg;
[0097] Maltodextrin 2571.42kg;
[0098] Wood Approx. 9 cubic meters.
[0099] 3.2 Process equipment: pressure impregnation tank with a volume of 20000L.
[0100] 3.3 Liquid preparation:
[0101] 3.3.1 One-time feeding: add formaldehyde in the reaction kettle according to the ratio, first add 1320.6kg of urea, polyvinyl alcohol, ammonia water, hexamethylenetetramine, 100kg of water, melamine, sodium carboxymethyl cellulose, hydrogenation Sodium oxide adjusts the pH value to 9.0;
[0102] 3.3.2 Secondary urea: heat up to 96°C and keep for 20 minutes, then add 186kg of urea and keep for 20 minutes;
[0103] 3.3.3 Polycondensation reaction: Cool to 86°C a...
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