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Gypsum plaster board with antibacterial, mildew-proof and formaldehyde-removing functions and preparation method thereof

A paper surface gypsum board and aldehyde-cleaning technology, which is applied in the field of building materials, can solve the problems of environmental pollution, industrial by-product gypsum occupying land resources, etc., achieve strong antibacterial performance, improve the adhesive performance of paper surface, and expand the antibacterial range.

Active Publication Date: 2020-09-01
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a gypsum board and its preparation method. The gypsum board uses industrial by-product gypsum as raw material, and has the functions of antibacterial, anti-mildew and formaldehyde purification, which not only solves the problem of land resources occupied by industrial by-product gypsum , the problem of polluting the environment, and using the gypsum board as a decoration and decoration material can improve the indoor environment

Method used

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  • Gypsum plaster board with antibacterial, mildew-proof and formaldehyde-removing functions and preparation method thereof
  • Gypsum plaster board with antibacterial, mildew-proof and formaldehyde-removing functions and preparation method thereof
  • Gypsum plaster board with antibacterial, mildew-proof and formaldehyde-removing functions and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The raw materials of the paper surface gypsum board of the present embodiment are: 130 parts by weight of phosphogypsum, 5 parts by weight of chitosan, 0.05 parts by weight of tetrakis hydroxymethyl phosphorus sulfate, 0.8 parts by weight of modified corn starch, and 0.1 parts by weight of sodium lauryl sulfate. parts by weight, 0.2 parts by weight of CaO, 3 parts by weight of glass fiber and 75 parts by weight of water.

[0036] The gypsum board of the present embodiment is prepared by the following method:

[0037] Step 1: Pour chitosan and tetrakis hydroxymethyl phosphorus sulfate into water, and mechanically stir evenly to obtain a mixed antibacterial liquid;

[0038] Step 2: adding modified cornstarch, sodium lauryl sulfate, and glass fiber to the mixed antibacterial solution obtained in step 1, and mechanically stirring to obtain a mixed solution;

[0039] Step 3: Calcining phosphogypsum at 180°C to make building gypsum powder (about 100 parts by weight), mixing ...

Embodiment 2

[0044] The raw materials of the paper surface gypsum board of the present embodiment are: 130 parts by weight of phosphogypsum, 10 parts by weight of chitosan, 0.1 part by weight of tetrakis hydroxymethyl phosphorus sulfate, 1.0 part by weight of modified corn starch, 0.2 parts by weight of sodium lauryl sulfate parts by weight, 0.4 parts by weight of CaO, 5 parts by weight of glass fiber and 85 parts by weight of water.

[0045] The preparation method of the paper-faced gypsum board is the same as in Example 1, wherein the pH value of the mixed powder of phosphogypsum and CaO obtained in Step 3 is 6.5.

Embodiment 3

[0047] The raw materials of the paper surface gypsum board of the present embodiment are: 150 parts by weight of fluorogypsum, 3 parts by weight of chitosan, 0.03 parts by weight of polyhexamethylene biguanide hydrochloride (PHMB), 0.7 parts by weight of modified soybean starch, fat Alcohol polyoxyethylene ether sodium sulfate 0.08 parts by weight, Ca(OH) 2 0.13 parts by weight, 2 parts by weight of basalt fiber and 75 parts by weight of water.

[0048] The gypsum board of the present embodiment is prepared by the following method:

[0049] Step 1: Pour chitosan and polyhexamethylene biguanide hydrochloride (PHMB) into water, and mechanically stir evenly to obtain a mixed antibacterial liquid;

[0050]Step 2: adding modified soybean starch, fatty alcohol polyoxyethylene ether sodium sulfate, and basalt fiber to the mixed antibacterial solution obtained in step 1, and mechanically stirring to obtain a mixed solution;

[0051] Step 3: Calcining fluorogypsum at 180°C to make b...

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Abstract

The invention discloses a gypsum plaster board with antibacterial, mildew-proof and formaldehyde-removing functions and a preparation method thereof. Raw materials for preparing the gypsum plaster board comprise the following components in parts by weight: 130-160 parts of industrial by-product gypsum; 2-10 parts of a natural antibacterial agent; 0.02-0.1 part of an organic antibacterial agent; 0.6-1 part of modified starch; 0.06-0.2 part of a foaming agent; 0-0.55 part of calcium oxide and / or calcium hydroxide; 1-5 parts of a reinforcing agent; and 70-85 parts of water. According to the gypsum plaster board, the industrial by-product gypsum serves as the raw material, the antibacterial, mildew-proof and formaldehyde-removing functions are achieved, the problems that the industrial by-product gypsum occupies land resources and pollutes the environment are solved; and an indoor environment can be improved by adopting the gypsum plaster board as a decorating and finishing material.

Description

technical field [0001] This application relates to but not limited to the field of building materials, especially a paper-faced gypsum board with antibacterial, anti-mildew and aldehyde-cleaning functions and a preparation method thereof. Background technique [0002] Modern people live and work indoors for more than 80% of the day, and the quality of indoor air is closely related to human health. Among the various factors affecting indoor air quality, microorganisms such as bacteria and mold and formaldehyde are easy to cause harm to the human body and cannot be ignored. [0003] The source of industrial by-product gypsum is rich, which can be industrial solid waste discharged from flue gas desulfurization or neutralization of acid wastewater in the process of industrial production (mainly composed of calcium sulfate dihydrate CaSO 4 2H 2 O), it can also be concentrated sulfuric acid and fluorite (CaF 2 ) industrial waste after the reaction (the main component is type II...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/10E04F13/075B28B3/00B28C5/40C04B111/20C04B111/40
CPCC04B28/143C04B38/10B28C5/402B28B3/00E04F13/14C04B2111/00017C04B2111/2092C04B2111/00025C04B2111/40C04B2103/67C04B24/38C04B22/064C04B24/16C04B14/42C04B24/161
Inventor 谭丹君王鹏起简铭尹东杰王莹何亮
Owner BEIJING NEW BUILDING MATERIALS PLC
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