Preparation method of sterilized high-strength crack prevention wood
A high-strength, anti-cracking technology, used in wood treatment, wood heating, humidity-conditioning wood, etc., can solve problems such as poor mechanical properties and dimensional stability, high resistance to swelling coefficient, easy to absorb water and cause swelling and deformation, and achieve excellent sterilization. Anti-mildew performance, good dimensional stability, no formaldehyde release effect
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[0020] Example 1
[0021] First weigh 50g lily leaf and 100g tea seed meal respectively, pulverize and sieve after drying to obtain 50 mesh lily leaf powder and 50 mesh tea seed meal powder, mix the powders and stir evenly, and mix the powders at a solid-to-liquid ratio of 1: 8 is mixed with 10% ammonia water by mass fraction, soaked for 8 hours and then filtered with suction to obtain a filter residue; freeze-dry the above filter residue, mix the dried product with propane at a solid-liquid ratio of 1:5, and use supercritical carbon dioxide at a critical pressure of 4.2Mpa and a critical Extraction at a temperature of 96°C for 30min, and centrifugation to obtain a supernatant after the extraction is completed. The supernatant is rotary evaporated to remove the propane solvent to obtain a concentrated solution, which is for later use; 3g of nano-silica micro-silica was added to a 500mL three-necked flask respectively. ball, 120mL mass fraction of 95% ethanol solution, ultrason...
Example Embodiment
[0023] Example 2
[0024] First weigh 60g lily leaf and 125g tea seed meal respectively, pulverize and sieve after drying to obtain 55 mesh lily leaf powder and 55 mesh tea seed meal powder, mix the powders and stir evenly, and mix the powders by a solid-liquid ratio of 1: 8 is mixed with 10% ammonia water by mass fraction, soaked for 9 hours and then filtered with suction to obtain a filter residue; freeze-dry the above filter residue, mix the dried product with propane at a solid-liquid ratio of 1:5, and use supercritical carbon dioxide at a critical pressure of 4.3Mpa and a critical Extraction at a temperature of 97°C for 35min, and centrifugation to obtain a supernatant after the extraction is completed, and the supernatant is rotary evaporated to remove the propane solvent to obtain a concentrated solution for use; 4g of nano-silica micro-silica was added to a 500mL three-necked flask respectively. ball, 135mL mass fraction of 95% ethanol solution, ultrasonically disperse...
Example Embodiment
[0026] Example 3
[0027] First weigh 70g of lily leaf and 150g of tea seed meal respectively, pulverize and sieve after drying to obtain 60 mesh lily leaf powder and 60 mesh tea seed meal powder, mix the powders and stir evenly, and press the mixed powder to a solid-liquid ratio of 1:1: 8 Mix with 10% ammonia water by mass fraction, soak for 10 hours and then suction filtration to obtain filter residue; freeze-dry the above filter residue, mix the dried product with propane at a solid-liquid ratio of 1:5, and use supercritical carbon dioxide at a critical pressure of 4.5Mpa and a critical Extraction for 40min at a temperature of 98°C, centrifugation to obtain a supernatant after the extraction, rotary evaporation of the supernatant to remove the propane solvent to obtain a concentrated solution for subsequent use; 5g of nano-silica microsilica was added to a 500mL three-necked flask respectively. ball, 150mL mass fraction of 95% ethanol solution, ultrasonically dispersed for ...
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