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Preparation process of desulfurized gypsum-based crystal-plastic composites

A technology of desulfurized gypsum and composite materials, applied in the field of crystal-plastic materials, can solve the problems of desulfurized gypsum that have not been recorded yet, and achieve the effects of reducing surface energy, increasing added value, and improving indoor quality of life

Active Publication Date: 2022-03-25
安徽创能环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, desulfurized gypsum is mainly used as plastering gypsum mortar, and there is no relevant literature record of using desulfurized gypsum and aluminum slag as aggregate of crystal-plastic materials

Method used

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  • Preparation process of desulfurized gypsum-based crystal-plastic composites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation process of the desulfurized gypsum-based crystal-plastic composite material comprises the following steps:

[0024] S1: Modified desulfurized gypsum: Grind the desulfurized gypsum to a particle size of ≤50 μm, calcined at 300 °C for 6 hours, add 0.024 mol / L silver nitrate solution at the ratio of 1 g:5 mL of liquid, stir evenly, and dropwise add 0.1 mol / L phosphoric acid Potassium solution, Ag control + , PO 4 3- The molar ratio is 1:3, the reaction is stirred for 3h, filtered and dried to obtain nano-silver phosphate / desulfurized gypsum powder;

[0025] S2: grinding the aluminum slag to a particle size of ≤120 μm to obtain aluminum slag powder;

[0026] S3: Weigh 100 parts of nano-silver phosphate / desulfurized gypsum powder, 40 parts of aluminum slag powder, 60 parts of polyethylene, 20 parts of polyvinyl chloride, 8 parts of triacetoxyvinylsilane, and 10 parts of perfluorosilicone oil in order by mass parts , 3 parts of dioctyl phthalate, 2 parts o...

Embodiment 2

[0030] The preparation process of the desulfurized gypsum-based crystal-plastic composite material comprises the following steps:

[0031] S1: Modified desulfurized gypsum: Grind the desulfurized gypsum to a particle size of ≤50 μm, calcined at 300 °C for 6 hours, and added 0.027 mol / L silver nitrate solution at a ratio of 1 g:5 mL of silver nitrate. After stirring evenly, 0.1 mol / L phosphoric acid was added dropwise. Potassium solution, Ag control + , PO 4 3- The molar ratio is 1:3, the reaction is stirred for 3h, filtered and dried to obtain nano-silver phosphate / desulfurized gypsum powder;

[0032] S2: grinding the aluminum slag to a particle size of ≤120 μm to obtain aluminum slag powder;

[0033] S3: Weigh 100 parts of nano-silver phosphate / desulfurized gypsum powder, 50 parts of aluminum slag powder, 70 parts of polyethylene, 25 parts of polyvinyl chloride, 9 parts of triacetoxyvinylsilane, and 12.5 parts of perfluorosilicone oil in order by mass parts , 4 parts of d...

Embodiment 3

[0037] The preparation process of the desulfurized gypsum-based crystal-plastic composite material comprises the following steps:

[0038] S1: Modified desulfurized gypsum: Grind the desulfurized gypsum to a particle size of ≤50 μm, calcined at 300 °C for 6 hours, add 0.036 mol / L silver nitrate solution at a ratio of 1 g: 5 mL of liquid, stir evenly, and add 0.15 mol / L phosphoric acid dropwise Potassium solution, Ag control + , PO 4 3- The molar ratio is 1:3, the reaction is stirred for 3h, filtered and dried to obtain nano-silver phosphate / desulfurized gypsum powder;

[0039] S2: grinding the aluminum slag to a particle size of ≤120 μm to obtain aluminum slag powder;

[0040] S3: Weigh 100 parts of nano-silver phosphate / desulfurized gypsum powder, 55 parts of aluminum slag powder, 70 parts of polyethylene, 25 parts of polyvinyl chloride, 9 parts of triacetoxyvinylsilane, and 13 parts of perfluorosilicone oil in order by mass parts , 4 parts of tricresyl phosphate, 2.5 par...

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Abstract

The invention discloses a preparation process of a desulfurized gypsum-based crystal-plastic composite material, comprising the following steps: S1: preparing nano-silver phosphate / desulfurized gypsum powder; S2: grinding aluminum slag to a particle size ≤ 120 μm to obtain aluminum slag powder; S3: weighing ; S4: 25°C, after mixing nano-silver phosphate / desulfurized gypsum powder and aluminum slag powder, adding triacetoxyvinylsilane, stirring and reacting for 0.5-1h to obtain a modified mixture; S5: at 95-100°C, After stirring and mixing the modified mixed powder obtained from polyethylene, polyvinyl chloride, plasticizer, light stabilizer 744, perfluorosilicone oil, and S4, extrude and granulate at 160-172°C, and mold it to obtain the desulfurization Gypsum-based crystal-plastic composites. For the first time, the present invention uses micron-level desulfurization gypsum and aluminum slag as main raw materials to prepare crystal-plastic materials, which not only broadens the application direction of desulfurization gypsum and aluminum slag, improves their added value, but also endows crystal-plastic materials with higher mechanical properties and high temperature resistance. and air purification performance.

Description

technical field [0001] The invention belongs to the technical field of crystal-plastic materials, and in particular relates to a preparation process of a desulfurized gypsum-based crystal-plastic composite material. Background technique [0002] Crystal plastic material has the dual advantages of marble and plastic, can be recycled and reused, and is an ideal material to replace wooden materials. Crystal plastic materials use polyvinyl chloride, polyolefin, polyester, etc. as thermoplastic raw materials, replace wood with plastic, do not add any wood components, effectively reduce the deforestation of forests, save resources, and at the same time, have high wear resistance, Anti-moth, anti-corrosion and other properties. However, with the deteriorating air quality, especially the high formaldehyde content in newly renovated rooms, it is of great significance to prepare crystal plastic materials that can purify the air. [0003] Desulfurization gypsum, also known as flue ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L23/06C08L23/00C08L27/00C04B18/06C04B111/20C04B111/27
CPCC04B26/32C04B20/023C04B20/04C04B40/0039C04B2111/00025C04B2111/00017C04B2111/2092C04B2111/2038C04B2111/2069C04B2111/27C04B18/064C04B14/366C04B20/008C04B18/14C04B24/2611C04B24/2682C04B24/003C04B2103/0068C04B24/045Y02W30/91
Inventor 王开封卢显人范祖勤李林辉
Owner 安徽创能环保材料有限公司
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