Production method of plant straw partical board containing absorption purifying agent
A technology of adsorption purification agent and production method, applied in chemical instruments and methods, other chemical processes, other household appliances, etc., can solve the problems of excessive particle size, single raw material, restricted adsorption and purification effect, etc., and achieve increased added value. , a wide range of effects
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[0019] Example 1: Use bamboo processing leftovers to be shredded by a drum flaker, or break bamboo processing shreds leftovers into shreds, and even use thin bamboo branches to form twigs as base material, and dry to moisture content Use 18.1 parts by absolute dry weight of the base material and use urea-formaldehyde glue. The sizing amount is 8% of the weight of the absolute dry base material. The amount of paraffin melt used as a waterproofing agent accounts for 0.5% of the total weight of the absolute dry base material. The adsorbent added is bamboo charcoal powder with a particle size of 2000 mesh and a high degree of carbonization. The addition amount is 8% of the mass of the absolute dry base material. TiO is sprayed during paving. 2 The particle size of the powder is 600 meshes. Mix the above-mentioned base material, glue, paraffin, and adsorbent according to the proportion, and then spread it evenly. At the same time, spray 0.3% of the absolute dry base material mass on th...
Example Embodiment
[0020] Example 2: The method is basically the same as that of Example 1, but the main difference is the raw materials and technical parameters: pine wood is used to process leftovers and twigs, cut into chips with a drum chipper, and then broken into chips by a drum chipper. Wood shavings, dried to a moisture content of 5%, use 23 parts by weight of base material, urea-formaldehyde glue, sizing amount of 6%, paraffin wax amount of 1.0%, adsorbents of 300 mesh activated carbon and 300 mesh zeolite soil, 300 mesh TiO for surface cleaning agent 2 , The amount of activated carbon and zeolite soil are each 5% of the mass of the absolute dry base material, mix and stir evenly, then pave, and spray 0.5% of the mass of the absolute dry base material with TiO 2 A mixture of powder and urea-formaldehyde glue which accounts for 0.03% of the mass of the dry base material. It is hot-pressed in a hot press. The hot-pressing temperature is 150℃, the hot-pressing pressure is 3MPa, the hot-pressin...
Example Embodiment
[0021]Example 3: The method is basically the same as that of Example 1, except that: the straw is cut and crushed by a hammer mill into pieces, dried to a moisture content of 4%, and 21 parts by weight of base material are used. Isocyanate glue, the sizing amount is 5%, 350 mesh diatomaceous earth is used as the adsorbent, the amount is 9% of the base material, without paraffin and TiO 2 . The base material, glue, and diatomaceous earth are mixed thoroughly, then spread, pre-pressed, and then hot-pressed. The hot-pressing temperature is 180℃, the hot-pressing time is 25s / mm, and the pressure is 2MPa. The length×width×thickness of the finished plate is 2440× 1220×10mm, density 0.85g / cm 3 , Moisture content 6.2%, static bending strength 14.5MPa, static bending elastic modulus 1950MPa, internal bonding strength 0.43MPa, surface bonding strength 0.81MPa, 2h water absorption thickness expansion rate 7.5%, the formaldehyde purification capacity of this straw particle board is 0.58mg / m ...
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