Water-repellent paper-surface plasterboard and preparation method thereof

A technology of paper-faced gypsum board and desulfurized gypsum powder, which is applied in the field of water-resistant paper-faced gypsum board and its preparation, can solve problems such as affecting environmental safety, increasing board weight, and difficulty in water-resistant boards, and achieves enhanced water resistance, increased stability, The effect of good temperature resistance
CN104628348AActive Publication Date: 2015-05-20北新建材(陕西)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
北新建材(陕西)有限公司
Publication Date
2015-05-20
Patent Text Reader

Abstract

The invention provides a water-repellent paper-surface plasterboard. The water-repellent paper-surface plasterboard comprises the following components in parts by weight: 100 parts of desulfurized plaster powder, 2.5-4 parts of emulsified wax, 0.3-1.0 part of starch, 0.03-0.12 parts of a foaming agent and 65-85 parts of water. The paper-surface plasterboard disclosed by the invention has the function of water repelling since emulsified wax is used as the water repellent, can be put in a plaster slurry network structure through paraffin to bloke air pores in plaster, and the function of water repelling is based on the physical action and is not influenced by plaster impurities; as the requirement of the emulsified wax for the purity of plaster is relatively low, the plasterboard disclosed by the invention has better water repellent effect, and when the mixing amount of the emulsified wax is 2.5-3 percent, the water absorption rate of the water-repellent paper-surface plasterboard soaked in water for 2 hours is lower than 10 percent; and when the mixing amount of the emulsified wax is 3.5-4 percent, the water absorption rate of the water-repellent paper-surface plasterboard soaked in water for 2 hours is lower than 5 percent.
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Description

technical field

[0001] The invention relates to a gypsum board, in particular to a water-resistant paper-faced gypsum board using desulfurized gypsum as a raw material and a preparation method thereof. Background technique

[0002] Ordinary paper-faced gypsum board is a board made of building gypsum as the main raw material, mixed with appropriate amount of additives and fibers as the board core, and made of special board paper as the protective surface. Because of its light weight, sound insulation, heat insulation, strong processing performance, and simple construction methods, it is widely used in residential buildings, office buildings, hotels and other places. However, due to the high solubility of gypsum in water and low softening coefficient, it is not suitable for application in humid environments.

[0003] For a long time, the application of waterproofing agent is an important way to improve the water resistance of gypsum boards. In the past, various enterprises g...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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