A kind of preparation method of anti-mildew gypsum board

A technology of plasterboard and gypsum board, which is applied in the field of preparation of anti-mildew plasterboard, which can solve the problems that affect life and health, cannot effectively prevent the growth of mold, and is prone to mildew, so as to improve the anti-mildew effect , shorten the processing time, and inhibit the growth of mold

Active Publication Date: 2018-11-30
CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Paper-faced gypsum board is the material of choice for today's house partitions. It has breathability and can absorb moisture. At the same time, it contains a variety of organic components; in places with high humidity, especially in southern regions, paper-faced gypsum boards are prone to mildew during use. Phenomenon, these molds directly affect people's life and health; the preparation method of anti-mold gypsum boards currently on the market is mainly to directly mix anti-mold liquid into gypsum core boards, which cannot effectively prevent the growth of mold

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The mildew-proof paper-faced gypsum board of the present invention includes a gypsum core board and face-protecting paper, the surface of the gypsum core board and the face-protecting paper are bonded together, and the components of the mildew-proof paper-faced gypsum board of the present invention include: desulfurized gypsum 500g, 325g of water, 3g of starch, 0.3g of foaming agent, containing 0.1g of sodium tetraborate (commonly known as borax) and two sheets of protective paper with a size of 300mm*300mm.

[0023] The preparation method of mildew-proof paper-faced gypsum board of the present invention is as follows:

[0024] A. Dry mix the desulfurized gypsum and starch of the above quality evenly, wet mix the foaming agent and water evenly, pour the above dry material into the wet material, and mix it into a slurry. Before the initial setting of the slurry, pour the slurry In the mold pressed with protective paper, a layer of protective paper is attached to the surf...

Embodiment 5

[0033] Embodiment 5 prepares the mildew-proof paper-faced gypsum board according to the method in Example 1, but the temperature of adding the mildew-proof agent solution is normal temperature; Embodiment 6 mixes sodium borate with gypsum, and then adds water and other additives to make the paper Face gypsum board; The components of the paper face gypsum board in embodiment 2-6 are as table 2:

[0034] Table 2 Gypsum board components (content is mass percentage):

[0035]

starch / %

Foaming agent / %

Antifungal agent / %

Example 2

0.8

0.08

0.04

Example 3

1.0

0.10

0.06

Example 4

1.1

0.11

0.08

Example 5

1.2

0.12

0.10

Example 6

1.0

0.11

0.05

[0036] In above-mentioned embodiment 1-6, in the mildew-proof plasterboard process of its production, following phenomenon is arranged:

[0037] In Example 1, after spraying the antifungal agent under vacuum conditions, the oven gradually re...

Embodiment 2

[0038] In Example 2, the time for vacuuming is relatively long, and the time for the oven to return to normal pressure after spraying the antifungal agent inside is very short, and a large amount of water droplets will be produced on the inner wall of the oven and the surface of the gypsum board.

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Abstract

A method for preparing a mildew-resistant paper-surface gypsum board is as follows: in the drying stage of a paper-surface gypsum board, the surface of the paper-surface gypsum board is sprayed with a mist-like mildew-resistant agent solution under vacuum conditions, and the temperature of the mist-like mildew-resistant agent solution is 60-90 DEG C; and the mildew-resistant paper-surface gypsum board prepared by the method can effectively prevent growth of mold on an adhesive layer between surface protective paper and a gypsum core sheet.

Description

technical field [0001] The invention relates to a method for preparing a mildew-proof paper-faced gypsum board. Background technique [0002] Paper-faced gypsum board is the material of choice for today's house partitions. It has breathability and can absorb moisture. At the same time, it contains a variety of organic components; in places with high humidity, especially in southern regions, paper-faced gypsum boards are prone to mildew during use. Phenomena, these molds directly affect people's life and health; the preparation method of anti-mold gypsum boards on the market is mainly to directly mix anti-mold liquid into the gypsum core board, which cannot effectively prevent the growth of mold. Contents of the invention [0003] The object of the present invention is to provide a method for preparing mildew-proof paper-faced gypsum board. The mildew-proof paper-faced gypsum board produced by the method can effectively prevent the growth of mold on the adhesive layer betwe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/45
Inventor 李帆王鹏起武发德谭丹君王莹何亮
Owner CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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