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Preparation method for environment-friendly plasterboard

An environmentally friendly technology for gypsum boards, applied in the field of gypsum boards, can solve the problems of high water absorption, poor water resistance, and low strength of gypsum boards, and achieve good fire prevention effects, reduce production costs, and low water absorption.

Inactive Publication Date: 2017-11-10
HEFEI FANTENG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, gypsum boards still have problems such as high water absorption, easy to fall off, poor water resistance and low strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method for an environmentally friendly gypsum board, comprising the steps of:

[0038] (1) Preparation of oxidative desulfurization gypsum

[0039] Weigh the desulfurized gypsum, crush it through a 65-mesh sieve, put it into a 0.6mol / L hydrochloric acid solution, stir it at a speed of 100r / min for 40min, let it stand for 30min, filter to obtain the filter residue, and dry it to obtain the desulfurized gypsum mixture;

[0040] Put the desulfurized gypsum mixture into the cyclone separator, set the speed at 500r / min, make the dross in the desulfurized gypsum fall to the bottom, take out the pure desulfurized gypsum in the upper layer, put it into the calciner, and under the temperature condition of 400°C, Calcined for 30 minutes to obtain oxidative desulfurization gypsum;

[0041] (2) Preparation of modified fiber reinforced particles

[0042] Weigh the fiber and filler according to the ratio of 4:1, mix and pulverize to obtain a powder, add 5 times the we...

Embodiment 2

[0061] A preparation method for an environmentally friendly gypsum board, comprising the steps of:

[0062] (1) Preparation of oxidative desulfurization gypsum

[0063] Weigh the desulfurized gypsum, crush it through a 75-mesh sieve, put it into a 0.8mol / L hydrochloric acid solution, stir it at a speed of 200r / min for 50min, let it stand for 35min, filter to obtain the filter residue, and dry it to obtain the desulfurized gypsum mixture;

[0064] Put the desulfurized gypsum mixture into the cyclone separator, set the speed at 600r / min, make the dross in the desulfurized gypsum fall to the bottom, take out the pure desulfurized gypsum in the upper layer, put it into the calciner, and under the temperature condition of 500°C, Calcined for 35 minutes to obtain oxidative desulfurization gypsum;

[0065] (2) Preparation of modified fiber reinforced particles

[0066] Weigh the fiber and filler according to the ratio of 5:1, mix and pulverize to obtain a powder, add 7 times the we...

Embodiment 3

[0085] A preparation method for an environmentally friendly gypsum board, comprising the steps of:

[0086] (1) Preparation of oxidative desulfurization gypsum

[0087] Weigh the desulfurized gypsum, crush it through a 70-mesh sieve, put it into a 0.7mol / L hydrochloric acid solution, stir at a speed of 150r / min for 45min, let it stand for 32min, filter to obtain a filter residue, and dry to obtain a desulfurized gypsum mixture;

[0088] Put the desulfurized gypsum mixture into the cyclone separator, set the rotating speed at 550r / min, make the slag in the desulfurized gypsum fall to the bottom, take out the pure desulfurized gypsum in the upper layer, put it into the calciner, and under the temperature condition of 450°C, Calcined for 32 minutes to obtain oxidative desulfurization gypsum;

[0089] (2) Preparation of modified fiber reinforced particles

[0090] Weigh the fiber and filler according to the ratio of 4:1, mix and pulverize to obtain a powder, add 6 times the weig...

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Abstract

The invention discloses a preparation method for an environment-friendly plasterboard, belonging to the technical field of plasterboards. The preparation method comprises the following steps: (1) preparation of gypsum having undergone oxidative desulfurization; (2) preparation of modified fiber reinforced particles; (3) preparation of a base material; (4) preparation of mixed slurry; (5) preparation of a semi-finished product; and (6) preparation of the finished plasterboard. The preparation method provided by invention is convenient to operate and low in cost; and the prepared plasterboard has good water resistance, low water absorption rate and high strength and is not prone to coming off.

Description

technical field [0001] The invention relates to the technical field of gypsum boards, in particular to a preparation method of an environmentally friendly gypsum board. Background technique [0002] Gypsum board is a material made of building gypsum as the main raw material. It is a building material with light weight, high strength, thin thickness, convenient processing, sound insulation, heat insulation and fire resistance. It is one of the new lightweight panels that are currently being developed. Gypsum boards have been widely used in interior partition walls, wall cladding panels, ceilings, sound-absorbing panels, ground floor panels and various decorative panels in various buildings such as residences, office buildings, shops, hotels and industrial plants. The gypsum boards produced in my country mainly include gypsum boards: paper-faced gypsum boards, non-paper-faced gypsum boards, decorative gypsum boards, etc. [0003] But at present, gypsum board still has proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B41/63C04B20/04C04B20/02C04B111/40C04B111/28C04B111/27
CPCC04B28/144C04B20/026C04B20/04C04B41/478C04B41/63C04B2111/27C04B2111/285C04B2111/40C04B18/08C04B14/20C04B14/18C04B14/104C04B16/0633C04B14/42C04B18/24C04B14/303C04B24/04C04B24/16C04B24/02C04B24/38C04B14/08C04B24/2623C04B24/383C04B2103/302C04B24/06C04B24/34C04B20/023C04B41/4529
Inventor 李丹丹
Owner HEFEI FANTENG ENVIRONMENTAL PROTECTION TECH CO LTD
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