Preparation method of flame-retardant artificial stone containing nano perovskite oxide MTiO3
A nano-calcium and oxide technology, applied in the field of building materials, can solve the problems of weak flame retardant and heat resistance, poor surface gloss, poor surface wear resistance, etc. The effect of the volume index
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Embodiment 1
[0024] (1) Preparation of BaTiO 3 With ZIF-90:
[0025](a) Preparation of nano-titanate template: 0.1mol / l tetraisobutyl titanate was dissolved in 10ml ethylene glycol monomethyl ether, ultrasonically dispersed, stirred evenly, and 25% ammonia water was added to obtain titanium hydroxide precipitation, Deionized wash. Then add 1mol / l KOH aqueous solution, stir for 10-20 minutes, mix well, transfer to a hydrothermal crystallization kettle, and react at 140-200°C for 1-4h. After the reaction is finished, wash and dry to obtain a nano-titanate template;
[0026] Add 15ml of barium nitrate solution with a concentration of 0.2mol / l and 10ml of an aqueous solution of tetramethylammonium hydroxide with a concentration of 0.1mol / l to 2g of nano-titanate nano-template, stir for 2h, mix well, and then carry out 180-220°C hydrothermal reaction for 1-4h, then cooling and precipitation. The finally obtained product was washed with deionized water and methanol respectively. BaTiO 3 Th...
Embodiment 2
[0030] (1) Preparation of SrTiO 3 With ZIF-90:
[0031] (a) Preparation of nano-titanate template: 0.3mol / l tetraisobutyl titanate was dissolved in 10ml ethylene glycol monomethyl ether, ultrasonically dispersed, stirred evenly, and 25wt% ammonia water was added to obtain titanium hydroxide precipitation, Deionized wash. Then add 2mol / l KOH aqueous solution, stir for 10-20 minutes, mix evenly, transfer to a hydrothermal crystallization kettle, and react at 140-200°C for 1-4h. After the reaction is finished, wash and dry to obtain a nano-titanate template;
[0032] Add 20ml of strontium nitrate solution with a concentration of 0.2mol / l and 10ml of an aqueous solution of tetramethylammonium hydroxide with a concentration of 0.1mol / l to 2g of nano titanate template, and stir for 2 hours. Thermal reaction for 4h, then cooling and precipitation. The finally obtained product was washed with deionized water and methanol respectively. The size of the product SrTiO3 is 40-60nm.
...
Embodiment 3
[0036] (1) Preparation of CaTiO 3 With ZIF-90:
[0037] (a) Preparation of nano-titanate template: 0.5mol / l tetraisobutyl titanate was dissolved in 10ml ethylene glycol monomethyl ether, ultrasonically dispersed, stirred evenly, and 25wt% ammonia water was added to obtain titanium hydroxide precipitation, Deionized wash. Then add 1mol / l KOH aqueous solution, stir for 10-20 minutes, mix well, transfer to a hydrothermal crystallization kettle, and react at 200°C for 3h. After the reaction is finished, wash and dry to obtain a nano-titanate template;
[0038] Add 15ml of 0.5mol / l calcium nitrate solution and 15ml of 0.3mol / l tetramethylammonium hydroxide aqueous solution to 3g of nano titanate template, stir for 2h, mix well, and then carry out 180℃ water Thermal reaction for 4h, then cooling and precipitation. The finally obtained product was washed with deionized water and methanol respectively. ProductCaTiO 3 The average diameter is 35-55nm.
[0039] (b) Preparation of ...
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