CN112408931A

CN112408931A - Water-resistant high-strength plastering gypsum

Info

Publication number: CN112408931A
Application number: CN201910782453.7A
Authority: CN
Inventors: 李树志; 袁鹰; 张魏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2021-02-26

Abstract

The invention relates to a water-resistant high-strength plastering gypsum. In order to solve the defect of poor water resistance of the existing gypsum plastering material, the raw materials of the water-resistant high-strength plastering gypsum comprise the following materials in percentage by weight: 20-70% of high-strength gypsum powder, 1-30% of light calcium powder, 1-50% of heavy calcium powder, 1-20% of vitrified micro bubbles and 1-10% of diatomite; 1-3% of lignocellulose, 1-3% of calcium stearate, 0.1-3% of cellulose ether, 0.1-3% of starch ether, 0.1-10% of powdery adhesive and 1-5% of gypsum retarder. The water-resistant high-strength plastering gypsum can replace the existing plastering gypsum, plastering mortar and other building materials, remarkably improve the building decoration quality and save a large amount of labor cost.

Description

Water-resistant high-strength plastering gypsum

The technical field is as follows:

the invention relates to a water-resistant high-strength plastering gypsum, in particular to a plastering gypsum with convenient construction, high bonding strength and excellent water resistance.

Technical background:

in recent years, cement and gypsum materials are widely applied in the building decoration process, and hydration products of the cement and gypsum materials have high compressive strength and flexural strength and are good decoration and decoration materials. But the cement material has the defects of poor cohesiveness, easy shrinkage, hollowing and cracking, low relative strength, water resistance, incapability of being used in a humid environment and the like.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to provide the water-resistant high-strength plastering gypsum, which not only avoids the problems of poor cohesiveness, easy shrinkage and hollowing cracking of a cement material, but also overcomes the defects that the gypsum material has low relative strength, is not water-resistant and cannot be used in a humid environment, and the like, so that the water-resistant high-strength plastering gypsum can completely replace the application of the cement material in various environments in actual use, and also avoids the problems of poor cohesiveness, easy shrinkage and hollowing cracking of the cement material.

In order to solve the problem of complaints, the invention provides a water-resistant high-strength plastering gypsum. The raw materials comprise the following materials in percentage by weight: 20-70% of high-strength gypsum powder, 1-30% of light calcium powder, 1-50% of heavy calcium powder, 1-20% of vitrified micro bubbles and 1-10% of diatomite; 1-3% of lignocellulose, 1-3% of calcium stearate, 0.1-3% of cellulose ether, 0.1-3% of starch ether, 0.1-10% of powdery adhesive and 1-5% of gypsum retarder.

The specific implementation mode is as follows:

the invention is further illustrated below with reference to a specific embodiment:

in this embodiment, the water-resistant high-strength gypsum raw material includes: 450KG of high-strength gypsum powder, 200KG of light calcium powder, 267KG of heavy calcium powder, 30KG of vitrified micro bubbles and 20KG of diatomite; 10KG of lignocellulose, 10KG of calcium stearate, 3KG of cellulose ether, 3KG of starch ether, 6KG of polyvinyl alcohol, and 1KG of citric acid.

(1) Firstly, sequentially adding high-strength gypsum powder, light calcium powder, heavy calcium powder, vitrified micro bubbles and diatomite into a gravity-free powder stirrer, stirring for 10 minutes, sequentially adding lignocellulose, calcium stearate, cellulose ether, starch ether, a powdery adhesive and a gypsum retarder, and continuously stirring for 30 minutes; and (4) stirring uniformly, and packaging to obtain the water-resistant high-strength plastering gypsum.

It should be noted that the powdered adhesive and gypsum retarder disclosed in this example, i.e. (polyvinyl alcohol and citric acid), are for illustration purposes only, and other powdered adhesives and gypsum retarders known to those of ordinary skill in the art and suitable for use in the inventive concept are intended to be encompassed by the claims appended to this application.

Claims

1. A water-resistant high-strength plastering gypsum is characterized in that the raw materials comprise the following materials in percentage by weight: 20-70% of high-strength gypsum powder, 1-30% of light calcium powder, 1-50% of heavy calcium powder, 1-20% of vitrified micro bubbles and 1-10% of diatomite; 1-3% of lignocellulose, 1-3% of calcium stearate, 0.1-3% of cellulose ether, 0.1-3% of starch ether, 0.1-10% of powdery adhesive and 1-5% of gypsum retarder.

2. The method for producing a water-resistant high-strength plastered gypsum according to claim 1, comprising the steps of:

(1) sequentially adding high-strength gypsum powder, light calcium powder, heavy calcium powder, vitrified micro bubbles and diatomite into a gravity-free powder stirrer, and stirring for 10 minutes;

(2) sequentially adding lignocellulose, calcium stearate, cellulose ether, starch ether, a powdery adhesive and a gypsum retarder into the gravity-free powder stirrer in the step (1), and continuously stirring for 30 minutes; until the mixture is evenly stirred, the water-resistant high-strength plastering gypsum is obtained.