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Preparation process of desulfurized gypsum-based crystal-plastic composite material

A technology for desulfurization gypsum and composite materials, which is applied in the field of crystal plastic materials and can solve the problems that there is no desulfurization gypsum, records, etc.

Active Publication Date: 2020-10-23
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 composite material

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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, calcinate at 300°C for 6 hours, add 0.024mol / L silver nitrate solution at a solid-liquid ratio of 1g:5mL, stir well, then add 0.1mol / L phosphoric acid dropwise Potassium solution, control Ag + 、PO 4 3- The molar ratio is 1:3, stirred and reacted for 3 hours, 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 of li...

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, calcinate at 300°C for 6 hours, add 0.027mol / L silver nitrate solution at a solid-liquid ratio of 1g:5mL, stir well, then add 0.1mol / L phosphoric acid dropwise Potassium solution, control Ag + 、PO 4 3- The molar ratio is 1:3, stirred and reacted for 3 hours, 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 dibutyl phthalate, 2.5 parts o...

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, calcinate at 300°C for 6 hours, add 0.036mol / L silver nitrate solution at a solid-liquid ratio of 1g:5mL, stir well, then add 0.15mol / L phosphoric acid dropwise Potassium solution, control Ag + 、PO 4 3- The molar ratio is 1:3, stirred and reacted for 3 hours, 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 according to parts by mass , 4 parts of tricresyl phosphate, 2.5 pa...

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Abstract

The invention discloses a preparation process of a desulfurized gypsum-based crystal-plastic composite material. The preparation process comprises the following steps: S1, preparing nano silver phosphate / desulfurized gypsum powder; S2, grinding aluminum slag until the particle size is less than or equal to 120 microns to obtain aluminum slag powder; S3, weighing; S4, mixing nano silver phosphate / desulfurized gypsum powder and aluminum slag powder at 25 DEG C, adding triacetoxyvinylsilane, and stirring to react for 0.5-1 hour to obtain a modified mixture; and S5, uniformly stirring and mixing polyethylene, polyvinyl chloride, a plasticizer, a light stabilizer 744, perfluorosilicone oil and the modified mixture obtained in the step S4 at 95-100 DEG C, extruding and granulating at 160-172 DEGC, and carrying out compression molding to obtain the desulfurized gypsum-based crystal-plastic composite material. According to the invention, the micron-sized desulfurized gypsum and the aluminum slag are used as main raw materials to prepare the crystal plastic material for the first time, so that the application direction of the desulfurized gypsum and the aluminum slag is broadened, the added value of the desulfurized gypsum and the aluminum slag is improved, and the crystal plastic material is endowed with higher mechanical properties, 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 desulfurized gypsum-based crystal-plastic composite materials. Background technique [0002] Crystal-plastic material has the dual advantages of marble and plastic, and can be recycled repeatedly. It 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, and do not add any wood components, which can effectively reduce deforestation and save resources. At the same time, it has high wear resistance, Anti-moth, anti-corrosion and other properties. However, with the continuous deterioration of air quality, especially the high formaldehyde content in newly-decorated rooms, it is of great significance to prepare crystal-plastic materials that can purify the air. [0003] Desulfurization gypsum is als...

Claims

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Application Information

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IPC IPC(8): C04B26/32C04B20/02C04B20/04C04B14/36C04B18/06C04B111/20C04B111/27
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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