A kind of formaldehyde-removing gypsum board and preparation method thereof
A technology for gypsum board and formaldehyde, which is applied in the field of formaldehyde-removing gypsum board and its preparation, and can solve the problems of weak adsorption, difficulty in ensuring the effect, and difficulty in ensuring the effect of removing aldehyde from gypsum board.
Active Publication Date: 2020-04-21
BEIJING NEW BUILDING MATERIALS PLC
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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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Embodiment
[0045] 1-10 parts by weight of formaldehyde adsorption material, 0.1-8 parts by weight of polypeptide, 0.05-2 parts by weight of polymer amines, 0.05-2 parts by weight of gum arabic powder, 100 parts by weight of gypsum, 0-1 weight part of strengthening agent, 0-2.5 weight part of water reducing agent and 0.02-1 weight part of modified starch, mechanically stirred to obtain uniform solid powder; 0.05-1 weight part of foaming agent was added to 70 - 90 parts by weight of water, mechanically stirred until foaming; solid powder was added to foaming agent aqueous solution, and mechanically stirred evenly to obtain gypsum slurry; the gypsum slurry was extruded, solidified, transported, cut and dried to obtain the Formaldehyde drywall.
[0046] 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 data during the experiment, and the embodiments of the present invention are not limited to the following ...
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The invention provides a formaldehyde-removing gypsum board and a preparation method thereof. The gypsum board comprises a mixture of a formaldehyde adsorbing material, a polypeptide, a polymer amine,acacia gum powder and a phosphate, wherein the mixture is prepared by a specific method. The formaldehyde-removing gypsum board provided by the invention can quickly capture indoor formaldehyde and decompose the formaldehyde, so that the concentration of the indoor formaldehyde is effectively reduced, and the formaldehyde purifying effect can be maintained for a long time; and meanwhile, the formaldehyde-removing gypsum board has excellent mechanical properties.
Description
technical field [0001] The invention relates to the field of building materials, in particular to a formaldehyde-removing 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 formaldehyde release cyc...
Claims
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IPC IPC(8): C04B28/14C04B38/10C04B20/06C04B20/02C04B14/08C04B14/10
CPCC04B14/08C04B14/104C04B20/023C04B20/06C04B28/14C04B38/10C04B2111/00017C04B2111/00025C04B2201/50C04B24/14C04B24/287C04B24/38C04B22/16C04B2103/0068C04B2103/302C04B22/002C04B24/16
Inventor 陈红霞王霞赵云峰李帆冉秀云白风华
Owner BEIJING NEW BUILDING MATERIALS PLC