A kind of preparation method of fire door core board
A fire-resistant door core board and a technology for preparation steps, which are applied in the field of building materials, can solve problems such as poor fire-proof effect of fire-resistant doors, and achieve the effects of improving mechanical properties, increasing density, and good adsorption performance.
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example 1
[0022] Mix sawdust and biogas slurry in a fermentation tank at a mass ratio of 1:8, and ferment at room temperature for 4 days at a constant temperature, then filter to obtain fermented sawdust, move the fermented sawdust into a drying box, and keep the temperature at 90°C for constant temperature Dry for 40 minutes to obtain pretreated wood chips; mix the pretreated wood chips and water in a beaker at a mass ratio of 1:10, and add sodium hydroxide 0.6 times the water quality and aluminum chloride 0.2 times the water quality to the beaker in turn, Move the beaker into a magnetic stirrer with digital display speed measurement and constant temperature, stir and react at a temperature of 60°C for 90 minutes, filter to obtain a filter cake, move the filter cake into a drying oven, and dry at a temperature of 90°C for 40 minutes to obtain Modified sawdust; fill the hollow aluminum ball with nitric acid with a mass fraction of 70%, and seal the opening with a sealant to obtain an add...
example 2
[0024]Fill the hollow aluminum ball with nitric acid with a mass fraction of 70%, and seal the opening with a sealant to obtain an additive; move the sepiolite into a pulverizer, pulverize, and pass through a 240-mesh sieve to obtain refined sepiolite. Sodium carbonate and Water was mixed in the flask at a mass ratio of 1:25, and fine sepiolite 0.4 times the water quality was added to the flask, and then carbon dioxide was introduced into the flask at a rate of 12mL / min, and after mixing for 80 minutes, the The temperature of the material is lowered to 10°C, filtered to obtain the filter residue, which is the modified sepiolite; the additive and the organic adhesive are mixed at a mass ratio of 1:5, and stirred and mixed for 60 minutes at a temperature of 60°C to obtain Modified adhesive; mix sawdust and mixed desiccant in a mixer at a mass ratio of 13:1, and add modified sepiolite 0.38 times the mass of sawdust and glass fiber 0.2 times the mass of sawdust to the mixer at a sp...
example 3
[0026] Mix sawdust and biogas slurry in a fermentation tank at a mass ratio of 1:8, and ferment at room temperature for 4 days at a constant temperature, then filter to obtain fermented sawdust, move the fermented sawdust into a drying box, and keep the temperature at 90°C for constant temperature Dry for 40 minutes to obtain pretreated wood chips; mix the pretreated wood chips and water in a beaker at a mass ratio of 1:10, and add sodium hydroxide 0.6 times the water quality and aluminum chloride 0.2 times the water quality to the beaker in turn, Move the beaker into a magnetic stirrer with digital display speed measurement and constant temperature, stir and react at a temperature of 60°C for 90 minutes, filter to obtain a filter cake, move the filter cake into a drying oven, and dry at a temperature of 90°C for 40 minutes to obtain Modified sawdust; fill the hollow aluminum ball with nitric acid with a mass fraction of 70%, and seal the opening with a sealant to obtain an add...
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Abstract
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