Steam curing-free high-strength cement-wood chip plate and preparation method thereof
A technology of cement sawdust and steam curing, which is applied in chemical instruments and methods, layered products of hydraulic substances, sustainable waste treatment, etc. Good water resistance, sound insulation and heat preservation performance, good fire resistance and flame retardancy, and the effect of reducing labor intensity
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[0032] The present invention also provides a method for preparing the above-mentioned non-steam-curing high-strength cement sawdust board. The method includes: 1) After mixing cement, active admixtures, short fibers, water and additives uniformly, then adding sawdust, thermal insulation aggregate and The ceramsite, after being evenly stirred, is laid and rolled, and then formed. The mesh is made of alkali-resistant glass fiber mesh; 2) The slab is loaded into the primary curing kiln, and the curing temperature is 28℃~32℃. Humidity is 50%~60%, curing time is 20~24h; (3) After demoulding, stacking enters into secondary curing, curing temperature is 30℃~35℃, curing relative humidity is 85%~95%, curing time is 40~48h; 4 ) Naturally dry the board so that the moisture content reaches 5%-10%.
[0033] The non-steam-curing high-strength cement wood chip board of the present invention can be widely used as non-load-bearing interior and exterior wall panels, ceilings, roof panels, partitio...
Example Embodiment
[0035] Example 1:
[0036] 1) Weigh the following components: 42.5 grade ordinary Portland cement 100kg, grade I fly ash 12.5kg, microsilica fume 8.5kg, particle size of 60 mesh, 12% moisture content of poplar wood chips 11kg, particle size: 20 mesh, bulk density 80kg / m 3 Vitrified beads 1kg, 3cm shale ceramsite 8kg, length 6mm polypropylene fiber 0.3kg, sodium silicate 0.1kg, calcium formate 0.03kg, sodium metaaluminate 0.05kg, hydroxypropyl with a viscosity of 40,000 0.1kg of methyl cellulose ether, 0.16kg of liquid polycarboxylic acid water reducing agent, 0.02kg of calcium stearate, 0.01kg of vinyl acetate-ethylene copolymer redispersible latex powder, 50kg of water; of which sodium silicate and calcium formate , Sodium metaaluminate, water retaining agent, water reducing agent, water repellent and polymer as additives;
[0037] 2) After mixing cement, fly ash, micro-silica fume, short fiber, water and additives, add sawdust, thermal insulation aggregate and ceramsite, stir ev...
Example Embodiment
[0044] Example 2:
[0045] 1) Weigh the following components: 80kg grade 52.5 ordinary Portland cement, 32.5kg grade II fly ash, 8.5kg micro silica fume, particle size of 80 mesh, moisture content of 13% apricot wood chips 11kg, particle size is 30 mesh, bulk density 100kg / m 3 Perlite 1kg, 5cm shale ceramsite 8kg, 8mm length of PVA fiber 0.45kg, sodium silicate 0.01kg, calcium formate 0.03kg, sodium metaaluminate 0.05kg, 60,000 viscosity starch ether 0.1kg , Liquid type polycarboxylic acid water reducing agent 0.16kg, zinc stearate 0.02kg, styrene-butadiene emulsion 0.01kg, water 50kg; of which sodium silicate, calcium formate, sodium metaaluminate, water retaining agent, water reducing agent, hydrophobic Agents and polymers are additives;
[0046] 2) After mixing cement, fly ash, micro-silica fume, short fiber, water and additives, add sawdust, thermal insulation aggregate and ceramsite, stir evenly, then spread the net and roll it to form. The net cloth adopts Alkali-resistant ...
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