A kind of slag-based mildew-proof and heat-retaining gypsum mortar and its preparation method

Abstract

The invention discloses a slag-based mildew-proof and heat-retaining gypsum mortar and a preparation method thereof. The main raw materials are β gypsum powder and light aggregate, which are solid wastes from coal-fired power plants, and are specifically made of the following raw materials in mass percentages: β gypsum powder 18-25% %, 30-35% of lightweight aggregate with a particle size of 1.0-2.2mm, 35-49% of lightweight aggregate with a particle size of 0.2-0.5mm, 1-1.5% of hydroxyethyl cellulose, and 0.5-49% of Portland cement 1%, antifungal agent 0.5~1%, foaming agent 1~1.5%; said antifungal agent is composed of zirconium phosphate loaded with silver ion / bromosalicylanilide and tridecafluorooctyltriethoxysilane 1 : (2-4) mass ratio mixed. The invention uses solid waste from coal-fired power plants as the main raw material, accounting for more than 95% of the total mass of gypsum mortar, realizes resource utilization of waste, and the raw material is cheap and easy to obtain, significantly reducing the production cost of gypsum mortar. At the same time, compared with traditional gypsum mortar , The gypsum mortar of the present invention is lighter in weight, waterproof and moisture-proof, mildew-proof and anti-bacterial, thermal insulation, sound insulation and noise reduction, and shock absorption performance are all significantly improved.

Description

technical field

[0001] The invention belongs to the field of manufacturing new green building materials, and in particular relates to slag-based mildew-proof light-weight heat-preserving gypsum mortar for interior wall painting and a preparation method thereof. Background technique

[0002] Compared with traditional cement mortar, gypsum mortar has the advantages of rapid construction, no hollowing and no cracking, high strength, light weight, good fire and heat insulation performance, etc. It has been widely used in the field of construction in recent years and has the potential to completely replace traditional cement mortar. trend.

[0003] At present, in the production process of commercially available thermal insulation gypsum mortar, it is generally necessary to introduce a large amount of expensive thermal insulation materials such as vitrified microspheres, expanded perlite, polystyrene microspheres, etc., resulting in a high price of gypsum mortar; in addition, the ...

Examples

Embodiment 1

[0025] S1: Preparation of raw materials

[0026] a. Obtaining of β gypsum powder: β gypsum powder is obtained by calcining and grinding flue gas desulfurization gypsum;

[0027] b. Acquisition of lightweight aggregates: Lightweight aggregates are obtained by sorting slag from coal-fired power plants, and are divided into lightweight aggregates with a particle size of 1.0-2.2mm and lightweight aggregates with a particle size of 0.2-0.5mm;

[0028] c. Preparation of antifungal agent:

[0029] Preparation of zirconium phosphate loaded with silver ion / bromosalicylanilide: Dissolve 1g of silver nitrate and 2.5g of 3,4',5-tribromosalicylanilide in 750mL of 75% ethanol solution, then add 215g of nano phosphoric acid Zirconium carrier, shake and adsorb at 40°C for 24 hours, concentrate under reduced pressure, and dry in vacuum;

[0030] Preparation of antifungal agent: 0.167kg of zirconium phosphate loaded with silver ions / bromosalicylanilide and 0.333kg of tridecafluorooctyltrietho...

Embodiment 2

[0035] S1: Preparation of raw materials

[0036] b. Obtaining of β gypsum powder: β gypsum powder is obtained by calcining and grinding flue gas desulfurization gypsum;

[0037] b. Acquisition of lightweight aggregates: Lightweight aggregates are obtained by sorting slag from coal-fired power plants, and are divided into lightweight aggregates with a particle size of 1.0-2.2mm and lightweight aggregates with a particle size of 0.2-0.5mm;

[0038] c. Preparation of antifungal agent:

[0039] Preparation of zirconium phosphate loaded with silver ion / bromosalicylanilide: Dissolve 1g of silver nitrate and 2.5g of 3,4',5-tribromosalicylanilide in 750mL of 75% ethanol solution, then add 215g of nano phosphoric acid Zirconium carrier, shake and adsorb at 40°C for 24 hours, concentrate under reduced pressure, and dry in vacuum;

[0040] Preparation of antifungal agent: 0.1875 kg of zirconium phosphate loaded with silver ions / bromosalicylanilide and 0.5625 kg of tridecafluorooctyltri...

Embodiment 3

[0045] S1: Preparation of raw materials

[0046] c. Obtaining of β gypsum powder: β gypsum powder is obtained by calcining and grinding flue gas desulfurization gypsum;

[0047] b. Acquisition of lightweight aggregates: Lightweight aggregates are obtained by sorting slag from coal-fired power plants, and are divided into lightweight aggregates with a particle size of 1.0-2.2mm and lightweight aggregates with a particle size of 0.2-0.5mm;

[0048] c. Preparation of antifungal agent:

[0049] Preparation of zirconium phosphate loaded with silver ion / bromosalicylanilide: Dissolve 1g of silver nitrate and 2.5g of 3,4',5-tribromosalicylanilide in 750mL of 75% ethanol solution, then add 215g of nano phosphoric acid Zirconium carrier, shake and adsorb at 40°C for 24 hours, concentrate under reduced pressure, and dry in vacuum;

[0050] Preparation of antifungal agent: 0.2kg of zirconium phosphate loaded with silver ions / bromosalicylanilide and 0.8kg of tridecafluorooctyltriethoxysi...

technical field

[0001] The invention belongs to the field of manufacturing new green building materials, and in particular relates to slag-based mildew-proof light-weight heat-preserving gypsum mortar for interior wall painting and a preparation method thereof. Background technique

[0002] Compared with traditional cement mortar, gypsum mortar has the advantages of rapid construction, no hollowing and no cracking, high strength, light weight, good fire and heat insulation performance, etc. It has been widely used in the field of construction in recent years and has the potential to completely replace traditional cement mortar. trend.

[0003] At present, in the production process of commercially available thermal insulation gypsum mortar, it is generally necessary to introduce a large amount of expensive thermal insulation materials such as vitrified microspheres, expanded perlite, polystyrene microspheres, etc., resulting in a high price of gypsum mortar; in addition, the ...

Examples

Embodiment 1

[0025] S1: Preparation of raw materials

[0026] a. Obtaining of β gypsum powder: β gypsum powder is obtained by calcining and grinding flue gas desulfurization gypsum;

[0027] b. Acquisition of lightweight aggregates: Lightweight aggregates are obtained by sorting slag from coal-fired power plants, and are divided into lightweight aggregates with a particle size of 1.0-2.2mm and lightweight aggregates with a particle size of 0.2-0.5mm;

[0028] c. Preparation of antifungal agent:

[0029] Preparation of zirconium phosphate loaded with silver ion / bromosalicylanilide: Dissolve 1g of silver nitrate and 2.5g of 3,4',5-tribromosalicylanilide in 750mL of 75% ethanol solution, then add 215g of nano phosphoric acid Zirconium carrier, shake and adsorb at 40°C for 24 hours, concentrate under reduced pressure, and dry in vacuum;

[0030] Preparation of antifungal agent: 0.167kg of zirconium phosphate loaded with silver ions / bromosalicylanilide and 0.333kg of tridecafluorooctyltrietho...

Embodiment 2

[0035] S1: Preparation of raw materials

[0036] b. Obtaining of β gypsum powder: β gypsum powder is obtained by calcining and grinding flue gas desulfurization gypsum;

[0037] b. Acquisition of lightweight aggregates: Lightweight aggregates are obtained by sorting slag from coal-fired power plants, and are divided into lightweight aggregates with a particle size of 1.0-2.2mm and lightweight aggregates with a particle size of 0.2-0.5mm;

[0038] c. Preparation of antifungal agent:

[0039] Preparation of zirconium phosphate loaded with silver ion / bromosalicylanilide: Dissolve 1g of silver nitrate and 2.5g of 3,4',5-tribromosalicylanilide in 750mL of 75% ethanol solution, then add 215g of nano phosphoric acid Zirconium carrier, shake and adsorb at 40°C for 24 hours, concentrate under reduced pressure, and dry in vacuum;

[0040] Preparation of antifungal agent: 0.1875 kg of zirconium phosphate loaded with silver ions / bromosalicylanilide and 0.5625 kg of tridecafluorooctyltri...

Embodiment 3

[0045] S1: Preparation of raw materials

[0046] c. Obtaining of β gypsum powder: β gypsum powder is obtained by calcining and grinding flue gas desulfurization gypsum;

[0047] b. Acquisition of lightweight aggregates: Lightweight aggregates are obtained by sorting slag from coal-fired power plants, and are divided into lightweight aggregates with a particle size of 1.0-2.2mm and lightweight aggregates with a particle size of 0.2-0.5mm;

[0048] c. Preparation of antifungal agent:

[0049] Preparation of zirconium phosphate loaded with silver ion / bromosalicylanilide: Dissolve 1g of silver nitrate and 2.5g of 3,4',5-tribromosalicylanilide in 750mL of 75% ethanol solution, then add 215g of nano phosphoric acid Zirconium carrier, shake and adsorb at 40°C for 24 hours, concentrate under reduced pressure, and dry in vacuum;

[0050] Preparation of antifungal agent: 0.2kg of zirconium phosphate loaded with silver ions / bromosalicylanilide and 0.8kg of tridecafluorooctyltriethoxysi...

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