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Scrubbing-resistant diatom ooze and preparation method thereof

A technology of diatom ooze and scrub resistance, which is applied in the field of scrub-resistant diatom ooze and its preparation, and can solve the problems affecting the micropores of diatom ooze

Active Publication Date: 2020-04-28
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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  • Scrubbing-resistant diatom ooze and preparation method thereof

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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, and particularly relates to scrubbing-resistant diatom ooze and a preparation method thereof. The preparation method comprisesthe following steps: (1) adding hydroxyl calcium phosphate into a phosphoric acid aqueous solution, stirring and dispersing the mixture, adding a hydrophobic silane coupling agent, and adjusting the pH value to obtain hydrophobic silane coupling agent modified hydroxyl calcium phosphate; (2) adding diatomite into water, dispersing the mixture, and then adding a surfactant and a hydrophobic silanecoupling agent to modify hydroxyl calcium phosphate, so as to obtain modified diatomite; and (3) uniformly mixing the modified diatomite with attapulgite, titanium dioxide, an organic cementing material, wollastonite powder, a suspension dispersion aid and water to obtain the scrubbing-resistant diatom ooze. According to the scrubbing-resistant diatom ooze disclosed by the invention, the surfactant is firstly used for coating the diatomite, so that micropores of the diatom ooze are not blocked by hydroxyl calcium phosphate, the specific adsorption performance of the diatomite is ensured, and meanwhile, a film formed by insoluble hydroxyl calcium phosphate on the surface of the diatomite in water has certain strength, so that the prepared diatom ooze has scrubbing 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 Applications(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