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Aldehyde removing gypsum board and preparation method thereof

A gypsum board and aldehyde purification technology, which is applied in the field of building materials, can solve the problems of difficult to guarantee effect, weak adsorption, and difficult to guarantee the aldehyde purification effect of gypsum board, so as to improve adsorption efficiency, enhance adsorption pertinence, and increase formaldehyde adsorption capacity Effect

Active Publication Date: 2019-06-25
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The weak adsorption makes formaldehyde may be released, and the effect is difficult to guarantee
However, adding photocatalyst to formaldehyde in gypsum board requires more external conditions, such as ultraviolet light irradiation to stimulate catalytic activity, and also requires indoor humidity; therefore, in practical applications, it is difficult to guarantee the net aldehyde effect of gypsum board

Method used

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  • Aldehyde removing gypsum board and preparation method thereof
  • Aldehyde removing gypsum board and preparation method thereof
  • Aldehyde removing gypsum board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0041] Mix 1-10 parts by weight of modified zeolite, 0.1-8 parts by weight of methoxyamine hydrochloride, 0.01-2 parts by weight of polymer amines, 0.05-2 parts by weight of guar gum and 0.01-0.5 parts by weight of phosphate The final mixture, 100 parts by weight of gypsum, 0.02-1 parts by weight of modified starch, mechanically stirred to obtain a uniform solid powder, put into the mixer; 0.05-1 parts by weight of foaming agent was added to the water, and the mixed solution passed through the foaming system After foaming, it enters the mixer; the raw materials are fully stirred by the mixer to obtain a uniform slurry, which is continuously poured between the protective papers and extruded to obtain a wet gypsum board; the wet gypsum board is solidified, cut, and dried 1. After sawing the edge, the net aldehyde gypsum board is made.

[0042] Table 1 lists the data of some examples of the present invention. It should be noted that the data in Table 1 are part of the selected d...

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Abstract

The invention provides an aldehyde removing gypsum board and a preparation method thereof, wherein the aldehyde removing gypsum board comprises a mixture of modified zeolite, methoxyamine hydrochloride, polymer amine, guar gum and phosphate. According to the present invention, the aldehyde removing gypsum board can quickly capture indoor formaldehyde and decompose, such that the indoor formaldehyde concentration can be effectively reduced, and the aldehyde removing effect can be maintained for a long time; and the aldehyde removing gypsum board has excellent mechanical property.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a formaldehyde-free gypsum board and a preparation method thereof. Background technique [0002] As people pay more attention to environmental protection and health, the demand for functional gypsum boards is increasing. Because in the decoration process, whether it is some paints or other later processes, many of them have formaldehyde, and formaldehyde has become one of the main pollutants in the decoration of our country. Formaldehyde is the most harmful to the human body and has the longest incubation period. It is called "the first killer of indoor pollution". "Carcinogenic and teratogenic substances". Long-term exposure to low-dose formaldehyde can cause chronic poisoning, causing diseases such as the respiratory system, nervous system, and reproductive system. Therefore, the harm of formaldehyde to human beings cannot be ignored. Since the release cycle of formaldehyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/02C04B20/02C04B111/40
CPCB01D53/72C04B28/145C04B2111/00612C04B14/047C04B2111/00025C04B22/16C04B24/02C04B24/121C04B24/287C04B24/38C04B38/10C04B24/045C04B20/023
Inventor 陈红霞武发德周建中王霞李帆冉秀云
Owner BEIJING NEW BUILDING MATERIALS PLC
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