Polystyrene-calcium silicate thermal insulation mortar containing papermaking sludge and preparation method thereof
A technology for papermaking sludge and polystyrene, which is applied in the field of building materials to achieve uniform and defect-free products, improve thermal insulation performance and mechanical performance, and reduce water absorption.
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[0029] Example 1 Preparation of calcium silicate particles containing papermaking white mud.
[0030] (1) Weigh the raw materials according to 30 parts of Portland cement, 40 parts of quartz sand, 3 parts of alkali recovery papermaking white mud, 10 parts of wood pulp fiber, and 10 parts of water. The raw materials are microwaved and stirred evenly at a mixing speed of 50r / min, temperature 140℃, time 3h, microwave heater power is 400W, frequency is 2450MHz;
[0031] (2) Microwave drying the product obtained in step (1) at 70°C for 4 hours, with a microwave heater power of 600W and a frequency of 2450MHz;
[0032] (3) Grind the product obtained in step (2) to an average particle size of 200 μm to obtain calcium silicate particles containing papermaking white mud.
Example Embodiment
[0033] Example 2 Preparation of calcium silicate particles containing papermaking white mud.
[0034] (1) Weigh each raw material according to 40 parts of Portland cement, 35 parts of quartz sand, 10 parts of alkali recovery papermaking white mud, 6 parts of wood pulp fiber, and 15 parts of water. The raw materials are microwaved and stirred evenly at a stirring speed of 40r / min, temperature 150℃, time 3h, microwave heater power is 500W, frequency is 2450MHz;
[0035] (2) Microwave the product obtained in step (1) at 80°C for 5 hours, with a microwave heater power of 500W and a frequency of 2450MHz;
[0036] (3) Grind the product obtained in step (2) to an average particle size of 50 μm to obtain paper-making white mud-containing calcium silicate particles.
Example Embodiment
[0037] Example 3 Preparation of calcium silicate particles containing papermaking white mud.
[0038] (1) Weigh the raw materials according to 50 parts of Portland cement, 30 parts of quartz sand, 15 parts of alkali-recovered papermaking white mud, 2 parts of wood pulp fiber, and 20 parts of water. The raw materials are microwaved and stirred evenly at a stirring speed of 40r / min, temperature 150℃, time 3.5h, microwave heater power is 600W, frequency is 2450MHz;
[0039] (2) Microwave drying the product obtained in step (1) at 60°C for 6 hours, with a microwave heater power of 400W and a frequency of 2450MHz;
[0040] (3) Grind the product obtained in step (2) to an average particle size of 10 μm to obtain papermaking white mud-containing calcium silicate particles.
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