A kind of anticorrosion particle board and its production method
A production method and particleboard technology, applied in the field of particleboard, can solve the problems of perishability, poor insect resistance, and low corrosion resistance of particleboard, and achieve improved anticorrosion performance, good corrosion resistance, termite resistance, and good resistance Effect
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Embodiment 1
[0019] First prepare the modified urea-formaldehyde resin adhesive. The preparation process is as follows: add formaldehyde solution to the reaction kettle, adjust the pH value to 7.5 with NaOH solution, add 3% furfuryl alcohol by weight of the formaldehyde solution, add 12% urea by weight of the formaldehyde solution, and After adding within 40 minutes, raise the temperature from normal temperature to 50°C, and keep warm for 40 minutes; after that, add formic acid solution to the reaction solution to adjust the pH of the reaction solution to 5.0, add urea with 20% weight of formaldehyde solution within 40 minutes, and heat up the reaction solution to 80°C, heat preservation reaction for 85min; finally, adjust the pH to 8.0 with NaOH solution, the reaction temperature drops to 68°C, add urea with 40% by weight of formaldehyde solution, finish adding within 45min, then add zinc borate preservative with 1% by weight of formaldehyde solution , react for 70min, cool down to room te...
Embodiment 2
[0022] According to the mol ratio of borax and copper sulfate, be 1:1.6 to prepare the mixed solution of borax and copper sulfate, obtain preservative;
[0023] Using the method of impregnation treatment, under normal temperature and pressure, immerse the shavings in a preservative, the amount of the preservative is 7% of the weight of the shavings, mix and stir evenly, soak for 5 hours, take out the shavings, and dry the shavings at 60°C. Make the moisture content of the shavings impregnated by preservative agent 8%; Then press 12% of shavings weight to control the sizing amount, apply the modified urea-formaldehyde resin adhesive made in Example 1 to the shavings, and apply the shavings to the shavings. Glue treatment; Then its follow-up production process and process parameters are consistent with those of ordinary particleboard. To the final finished anticorrosion particleboard.
Embodiment 3
[0025] First prepare the modified urea-formaldehyde resin adhesive. The preparation process is as follows: add formaldehyde solution to the reaction kettle, adjust the pH value to 8.0 with NaOH solution, add 5% furfuryl alcohol by weight of the formaldehyde solution, and add 15% urea by weight of the formaldehyde solution. After adding within 45 minutes, raise the temperature from normal temperature to 55°C. After the heat preservation reaction for 45 minutes, add formic acid solution to the reaction solution to adjust the pH of the reaction solution to 5.5. ℃, heat preservation reaction for 90 minutes; finally, use NaOH solution to adjust the pH to 8.5, the reaction temperature drops to 72 ℃, add urea with 45% by weight of formaldehyde solution, and finish adding within 50 minutes, then add zinc borate preservative with 3% by weight of formaldehyde solution, React for 80 minutes, cool down to room temperature, and filter excess urea after fully reacting, add 2% ammonium sulfat...
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