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Diatomite coating for catalytically decomposing formaldehyde and preparation method thereof

A diatom mud coating and catalytic decomposition technology, applied in the direction of coating, can solve the problems of secondary pollution, inconvenient use, poor effect continuity, etc., to improve the decomposition removal rate, not easy to secondary pollution, and good pollution removal effect. Effect

Inactive Publication Date: 2018-11-30
宁波智通环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at problems such as the poor sustainability of the effect of the current environmental protection coatings, the tendency to produce secondary pollution, and the inconvenient use, and designs a diatom mud-based coating that can completely decompose and eliminate formaldehyde and other pollutants at room temperature. its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] To prepare diatom ooze coatings that catalytically decompose formaldehyde at room temperature, proceed as follows:

[0031] (a) Take 50 parts of diatomite powder in 200 parts of deionized water, stir to form a suspension;

[0032] (b) Add 5 parts of potassium permanganate to the suspension prepared in step (a), stir while adding, stir for 1.5 hours and then let stand for 3 hours to fully load.

[0033] (c) Add the liquid of step (b) into the ultrasonic pool, set the frequency of the ultrasonic pool to 45 kHz, and the water temperature to 50° C., then add 2.5 parts of manganese sulfate and 1 part of potassium hydroxide. After reacting for 2 hours, leave it to stand and age for 12 hours, use a suction filter, and then wash with water to prepare modified diatomite in which manganese dioxide catalyzes the decomposition of formaldehyde nanomaterials and is adsorbed inside the diatomite pores. The water content of the mud cake after washing is controlled at 40%.

[0034] (d...

Embodiment 2

[0036] To prepare diatom ooze coatings that catalytically decompose formaldehyde at room temperature, proceed as follows:

[0037] (a) Take 40 parts of diatomite powder in 100 parts of deionized water, and stir to form a suspension;

[0038] (b) Add 5 parts of potassium permanganate to the suspension prepared in step (a), stir while adding, stir for 1.5 hours and then let stand for 3 hours to fully load.

[0039] (c) Add the liquid of step (b) into the ultrasonic pool, set the frequency of the ultrasonic pool to 45 kHz, and the water temperature to 50° C., then add 3 parts of manganese sulfate and 1 part of potassium hydroxide. After reacting for 2 hours, leave it to stand and age for 12 hours, use a suction filter, and then wash with water to prepare modified diatomite in which manganese dioxide catalyzes the decomposition of formaldehyde nanomaterials and is adsorbed inside the diatomite pores. The water content of the mud cake after washing is controlled at 40%.

[0040] ...

Embodiment 3

[0042] To prepare diatom ooze coatings that catalytically decompose formaldehyde at room temperature, proceed as follows:

[0043] (a) Take 70 parts of diatomite powder in 220 parts of deionized water, stir to form a suspension;

[0044] (b) Add 5 parts of potassium permanganate to the suspension prepared in step (a), stir while adding, stir for 1.5 hours and then let stand for 3 hours to fully load.

[0045] (c) Add the liquid of step (b) into the ultrasonic pool, set the frequency of the ultrasonic pool to 45kHz, and the water temperature to 50°C, then add 1 part of manganese sulfate and 1 part of potassium hydroxide. After reacting for 2 hours, leave it to stand and age for 12 hours, use a suction filter, and then wash with water to prepare modified diatomite in which manganese dioxide catalyzes the decomposition of formaldehyde nanomaterials and is adsorbed inside the diatomite pores. The mud cake gouache after washing is controlled at 40%.

[0046] (d) Take 100 parts of...

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Abstract

The invention discloses a diatomite coating for catalytically decomposing formaldehyde and a preparation method thereof. The coating comprises active materials for catalytically decomposing the formaldehyde, diatomite,a binding agent, deionized water, filler and a dispersing agent. The preparation method comprises the following steps: mixing the diatomite into the deionized water to form a suspension, then adding potassium permanganate for uniformly stirring, applying ultrasonic wave, adding manganese sulfate and potassium hydroxide at the same time, aging and performing solid-liquid separation after the reaction is completed to prepare the modified diatomite for catalytically decomposing formaldehyde by using manganese dioxide, then mixing the modified diatomite, the binding agent, the deionized water, the filler and the dispersing agent into a paste,namely the diatomite coating for catalytically decomposing formaldehyde at normal temperature. The diatomite coating provided by the invention has the advantages that the catalytical decomposion of the formaldehyde at normal temperature is realized, the hardness is high, the scrubbing is resisted and the process is simple.

Description

technical field [0001] The invention relates to an environment-friendly coating and a preparation method thereof, in particular to a diatom mud coating which catalyzes the decomposition of formaldehyde and a preparation method thereof. Background technique [0002] With the improvement of people's daily life and consumption level, people have higher and higher requirements for their home environment, one of which is in terms of interior design and decoration. In the process of interior decoration, it is usually necessary to use a large amount of wood, paint, glue and coating, because wood, glue, paint and coating contain a large amount of pollutants: formaldehyde, benzene and TVOC (total volatile organic compounds), these pollution It is difficult to volatilize completely in a short time, especially the volatilization of formaldehyde is relatively slow, which can last as long as three years. People living in this environment for a long time will endanger the health of the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/61
CPCC09D1/00C09D7/61
Inventor 张炜潘金根郭谨玮崔宏智赵伟张涵朱伟明
Owner 宁波智通环保科技有限公司
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