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A kind of scrub-resistant diatom mud and preparation method thereof

A diatom mud and scrubbing-resistant technology is applied in the field of scrubbing-resistant diatom mud and its preparation, and can solve problems such as affecting the micropores of the diatom mud.

Active Publication Date: 2021-10-26
山东凯大新型材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the existing scrub-resistant diatom ooze will affect the micropores of the diatom ooze after absorbing water, the present invention proposes a diatom ooze that achieves the scrub-resistant effect by protecting the surface of the micropores and its preparation method

Method used

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  • A kind of scrub-resistant diatom mud and preparation method thereof

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Effect test

Embodiment 1

[0027] A preparation method of scrub-resistant diatom ooze, comprising the following steps:

[0028](1) Add calcium hydroxyphosphate to phosphoric acid aqueous solution with pH=4, stir and disperse, add hydrophobic silane coupling agent, stir and react at 80°C for 5.5 hours, adjust pH=7, and centrifugally wash to obtain hydrophobic silane coupling agent Coupling agent modified hydroxy calcium phosphate; the hydrophobic silane coupling agent is methyldimethoxysilane; the mass ratio of hydroxy calcium phosphate, phosphoric acid, hydrophobic silane coupling agent is 8:13:2;

[0029] (2) After adding diatomaceous earth into water to disperse, continue to add surfactant and stir for 0.5 hours, then add the hydrophobic silane coupling agent modified calcium hydroxyphosphate obtained in step (1) and continue to stir for 0.5 hours, and obtain Modified diatomite; Surfactant is sodium cetyl sulfonate; The mass ratio of described diatomite, water, surfactant and hydrophobic silane coupli...

Embodiment 2

[0032] A preparation method of scrub-resistant diatom ooze, comprising the following steps:

[0033] (1) Add calcium hydroxyphosphate to phosphoric acid aqueous solution with pH=4, stir and disperse, add hydrophobic silane coupling agent, stir and react at 75°C for 5 hours, adjust pH=7, and wash with centrifugal water to obtain hydrophobic silane coupling agent Coupling agent modified hydroxy calcium phosphate; the hydrophobic silane coupling agent is vinyltriethoxysilane; the mass ratio of hydroxy calcium phosphate, phosphoric acid, hydrophobic silane coupling agent is 5:15:2;

[0034] (2) After adding diatomaceous earth into water to disperse, continue to add surfactant and stir for 1 hour, then add the hydrophobic silane coupling agent modified calcium hydroxyphosphate obtained in step (1) and continue stirring for 1 hour, and obtain Modified diatomite; Surfactant is sodium cetylbenzenesulfonate; The mass ratio of described diatomite, water, surfactant and hydrophobic silan...

Embodiment 3

[0037] A preparation method of scrub-resistant diatom ooze, comprising the following steps:

[0038] (1) Add calcium hydroxyphosphate to phosphoric acid aqueous solution at pH=4, stir and disperse, add hydrophobic silane coupling agent, stir and react at 85°C for 6 hours, adjust pH=7, and wash with centrifugal water to obtain hydrophobic silane coupling agent Coupling agent modified hydroxy calcium phosphate; the hydrophobic silane coupling agent is methyldimethoxysilane; the mass ratio of hydroxy calcium phosphate, phosphoric acid, hydrophobic silane coupling agent is 9:11:2;

[0039] (2) After adding diatomaceous earth into water to disperse, continue to add surfactant and stir for 1 hour, then add the hydrophobic silane coupling agent modified calcium hydroxyphosphate obtained in step (1) and continue stirring for 0.5 hour, and then obtain Modified diatomite; surfactant is cetyl ammonium bromide; the mass ratio of diatomite, water, surfactant and hydrophobic silane coupling...

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Abstract

The invention belongs to the technical field of diatom ooze preparation, in particular to a scrub-resistant diatom ooze and a preparation method thereof. Including: (1), adding calcium hydroxyphosphate to phosphoric acid aqueous solution, stirring and dispersing, adding hydrophobic silane coupling agent, adjusting pH, and obtaining hydrophobic silane coupling agent modified calcium hydroxyphosphate; (2), diatom Soil is added to water to disperse, and then surfactant and hydrophobic silane coupling agent are added to modify calcium hydroxyphosphate to obtain modified diatomite; (3), the modified diatomite is mixed with attapulgite, titanium dioxide, organic The gelling material, wollastonite powder, suspending dispersing agent and water are evenly mixed to obtain a scrub-resistant diatom mud. The scrub-resistant diatom ooze of the present invention first uses a surfactant to coat diatomite so that the micropores will not be blocked by calcium hydroxyphosphate, which ensures the unique adsorption performance of diatomite, and at the same time the calcium hydroxyphosphate on the surface of diatomite The water-insoluble film has a certain strength, so that the prepared diatom ooze has scrub resistance.

Description

technical field [0001] The invention belongs to the technical field of diatom ooze preparation, in particular to a scrub-resistant diatom ooze and a preparation method thereof. Background technique [0002] The main component of diatom mud is diatomaceous earth, which is a kind of biogenic siliceous sedimentary rock, which is mainly composed of the remains of ancient diatoms. Diatoms are the first single-celled algal organisms that appeared on the earth. They live in seawater or lake water. They are extremely small in size and often grow and reproduce at an alarming rate. After hundreds of millions of years, diatoms and other plankton deposits have become diatom mud at the bottom of the water. Using an electron microscope to observe diatom mud, diatom mineral is a porous material with a pore size of micron. The quantity is thousands of times more than charcoal. This molecular sieve structure makes it have extremely strong physical adsorption performance and ion exchange p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/04C04B20/02C04B111/27
CPCC04B20/023C04B26/04C04B2111/27C04B14/08C04B14/305C04B14/043C04B2103/408
Inventor 陈庆陈巧和司文彬何方刘超
Owner 山东凯大新型材料科技有限公司