Preparation method of iron tailings sand damping material with modified surface friction coefficient and viscosity

A technology of iron tailings sand and surface friction, which is applied in the field of damping material preparation, can solve the problems of low economic value and low utilization efficiency, and achieve the effects of good wear resistance, high hardness and lightening the response of large earthquakes

Active Publication Date: 2019-12-31
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: traditional iron tailings treatment methods such as tailings backfilling, tailings brick making, etc. Low utilization efficiency

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  • Preparation method of iron tailings sand damping material with modified surface friction coefficient and viscosity

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[0024] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, the modified surface friction coefficient and viscous iron tailings sand damping material preparation method provided by the embodiment of the present invention comprises the following steps:

[0027] S101: Preparation of tailings sand particle damping material whose surface is evenly covered with vinyl: prepare ethanol-water solution, the mixed mass ratio of alcohol-water is 90:10, and add vinyltriethoxysilane to it to prepare a solution with a mass ...

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Abstract

The invention belongs to the technical field of damping material preparation, and discloses a method for preparing an iron tailings sand damping material with modified surface friction coefficient and viscosity. Vinyl triethoxysilane and styrene are used for step-by-step modification; vinyl Triethoxysilane is used as a preliminary modifier on the surface of iron tailings sand to evenly cover a layer of vinyl on the surface of tailings sand. The content of vinyltriethoxysilane is controlled at 1% of the mass of the ethanol-water mixed solution, and the amount of ethanol and aqueous solution is 1%. The mixing mass ratio is 90:10; styrene is used as a secondary modifier, and the tailings sand with a uniform layer of polymer on the surface is obtained by polymerization initiated by potassium persulfate, and the particle damping performance is regulated from the surface friction coefficient and surface structure. The invention changes the component structure of the tailings sand surface, improves the surface friction coefficient, and also changes the viscous performance, and the damping value is increased by more than 10% compared with ordinary granular damping materials.

Description

technical field [0001] The invention belongs to the technical field of damping material preparation, in particular to a method for preparing an iron tailings sand damping material with modified surface friction coefficient and viscosity. Background technique [0002] The comprehensive recovery and utilization of tailings sand has been widely concerned by the whole society; however, the traditional iron tailings treatment methods such as tailings backfilling and tailings brick making have low economic value, such as tailings re-election and tailings making microcrystalline The utilization efficiency of glass and the like is low. The first is the difference in the composition of the tailings sand. Different regions and processes lead to a particularly large difference in the composition of the iron tailings sand, which is the main reason why it cannot be used in large quantities in concrete; secondly, the internal structure of the tailings sand is very irregular, resulting in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42
CPCC04B40/0039C04B2103/0068C04B18/12C04B24/026C04B24/42C04B24/04C04B24/10
Inventor 李明俊张安桂徐永文苗明东叶浩
Owner NANCHANG HANGKONG UNIVERSITY
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