A prefabricated magnesium-based cement foamed lightweight composite floor slab and its preparation method
A technology of cement foaming and cement foaming layer, which is applied to floor slabs, ceramic products, other household appliances, etc., can solve the problems of low strength and insufficient hydration, and achieve good impact resistance, thermal insulation and sound insulation effects. Good, low emission effect
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Embodiment 1
[0039] A method for preparing a prefabricated magnesium-based cement foamed lightweight composite floor, the method specifically includes the following steps:
[0040] (a) Preparation of magnesium-based foamed cement
[0041] 65 kg of magnesia salt cement, 3 kg of foam stabilizer and 5 kg of foaming agent, add water according to the water-cement ratio of 0.45, and stir to make magnesium-based cement foam slurry. The foam stabilizer is silicone amide; the foaming agent is sodium lauryl sulfate.
[0042] The preparation method of the magnesia salt cement is as follows: 100-200 mesh MgO, 100-200 mesh MgSO 4 and H 2 O, the three are mixed according to the ratio of the amount of substances of 9:1:25, and then add the inducer, the addition of the inducer is MgO, MgSO 4 and H 2 O 1 wt% of the total mass of the three, stirring for more than 24 hours, drying, grinding, and passing through a 200-mesh sieve to obtain magnesia salt cement.
[0043] The preparation method of the induc...
Embodiment 2
[0055] The difference between this embodiment and embodiment 1 is:
[0056] The inducer is composed of A component and B component, and the preparation method of A component is as follows: 200-400 mesh talcum powder is added to the vinegar-acrylic emulsion, and the mass ratio of the talc powder to the vinegar-acrylic emulsion is 8:27, Stir, be heated to 60 ℃ and keep 4 hours, filter and dry; Join in the tannic acid aqueous solution in the obtained solid product, the massfraction of tannic acid in the tannic acid aqueous solution is 10wt%, the mass ratio of solid product and tannic acid aqueous solution The ratio is 1:30, heated to 100°C and kept for 5 hours, filtered, dried and pulverized, and passed through a 100-mesh sieve to obtain component A; the preparation method of component B is as follows: add 200-400-mesh fly ash to three In the ethanolamine aqueous solution, the mass fraction of the triethanolamine aqueous solution is 5wt%, the mass ratio of the fly ash to the trie...
Embodiment 3
[0059] The difference between this embodiment and embodiment 2 is:
[0060] (a) Preparation of magnesium-based foamed cement
[0061]65 kg of magnesia salt cement, pre-treated fly ash, 3 kg of foam stabilizer and 5 kg of foaming agent, add water according to the water-cement ratio of 0.45, and stir to make magnesium-based cement foam slurry. The amount of fly ash after pretreatment is 10wt% of the mass of MgO used in the preparation of magnesia salt cement.
[0062] The preparation method of the fly ash after the pretreatment is as follows: 200-400 mesh fly ash is added in the triethanolamine aqueous solution, the mass fraction of the triethanolamine aqueous solution is 3wt%, and the mass ratio of the fly ash and the triethanolamine aqueous solution is 1: 12. Stir, heat to 70°C and keep for 12 hours, filter and dry; add the obtained solid product to the silane coupling agent solution, the mass ratio of the solid product to the silane coupling agent solution is 1:16, silane co...
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