Method for preparing moisture-proof and fireproof paper gypsum board

A paper surface gypsum board, the technology of preparation steps, applied in the direction of papermaking, textiles and papermaking, natural cellulose pulp/paper, etc., can solve the problems of poor fire resistance, low strength, low softening coefficient, etc., to increase the exposed surface area , Improve fire performance, enhance the effect of adhesion

CN110759667AInactive Publication Date: 2020-02-07刘鹏
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-02-07
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a method for preparing a moisture-proof and fireproof paper gypsum board and belongs to the technical field of building materials. According to the method, a composite fire retardant filler is added into wood pulp fiber by using an intra-slurry addition method, diatomite has a main component of silicon dioxide and can replace a polymer binder to form a positively charged silica gel in the in wood pulp fiber, the positively charged wood pulp fiber around can be aggregated and bonded, then the bonding action of glass fiber and the wood pulp fiber can be enhanced, a densefibrillation fiber net is formed through plate mill fibrillation, the exposed surface area of silica can be increased, and the fire prevention performance can be improved. According to the method, polyoxyethylene octyl phenol ether emulsified liquid paraffin is adopted a raw material to obtain emulsified paraffin, the emulsified paraffin and an acrylic monomer are subjected to an emulsification reaction under initialization of potassium sulfate to obtain modified emulsified liquid paraffin, and thus the water resistance and the strength of the gypsum board can be improved.
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Description

technical field

[0001] The invention discloses a preparation method of a moisture-proof and fire-proof paper-faced gypsum board, which belongs to the technical field of building materials. Background technique

[0002] 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 cardboard as the surface protection. Paper-faced gypsum board has the characteristics of light weight, sound insulation, heat insulation, strong processing performance, and simple construction method. Paper-faced gypsum board is a light-weight building sheet made of natural gypsum and face-protecting paper as the main raw materials, mixed with appropriate amount of fiber, starch, coagulant, foaming agent and water.

[0003] There are many types of gypsum boards. There are four types of common gypsum boards on the market: Ordinary: ivory white paper core and gray core, which are the m...

Examples

preparation example Construction

[0029] Preparation of modified emulsified liquid paraffin: Mix 100mL of liquid paraffin and 200mL of distilled water into a two-necked flask with a stirrer, heat up to 60°C, add 3g of polyoxyethylene octylphenol ether into 100mL of distilled water, and stir for 10min , to obtain an aqueous emulsion, preheat the aqueous emulsion to 60°C, put it into a two-necked flask, start the stirrer, stir at a speed of 200r / min, stir and emulsify for 40min, and obtain emulsified liquid paraffin;

[0030] Add 0.8g of polyoxyethylene octylphenol ether into 40mL of acrylic acid and stir for 20 minutes to obtain emulsified acrylic acid. Put the emulsified acrylic acid and the above emulsified liquid paraffin into a three-necked flask equipped with a stirrer and a dropping funnel, and heat up to 70°C After starting the agitator to stir and emulsify at a speed of 300r / min for 20min, use a dropping funnel to add 40mL of potassium thiosulfate solution with a mass fraction of 10% to the three-necked ...