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A gypsum-based plastering material

A technology of gypsum-based heat storage materials, applied in the field of gypsum-based plastering materials, can solve problems such as poor performance of gypsum products, detachment of board core and paper core, surface frost return, etc., to achieve improved waterproof effect, easy adjustment and control, and strong The effect of adsorption capacity

Active Publication Date: 2020-10-30
BEIJING NEW BUILDING MATERIALS PLC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, some flue gas desulfurization gypsum contains a certain amount of soluble impurities (such as sodium ions, magnesium ions and chloride ions), and desulfurization gypsum with high impurity ion content has a bad influence on the performance of gypsum products. The paper surface gypsum board made of high desulfurization gypsum is prone to problems such as separation between the board core and the paper core, and surface frosting.
[0003] In recent years, many scientific research institutes in China have successively carried out research work on the preparation and application of functional gypsum-based plastering materials using natural gypsum and industrial by-product gypsum (desulfurization gypsum, phosphogypsum, fluorogypsum, etc.) and other substrates. However, there are few reports on the use of low-quality desulfurized gypsum with high impurity ion content to prepare thermal insulation materials with excellent thermal insulation performance.

Method used

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  • A gypsum-based plastering material
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preparation example Construction

[0053] 2. Preparation of gypsum-based plastering materials

[0054] Step 1: Weigh each component according to the mass in Table 1;

[0055] Step 2: Mix desulfurized gypsum, modified composite phase change energy storage heat storage material, and retarder evenly, and put them in a constant temperature and constant pressure vacuum drying oven at a temperature of 40±2°C and a vacuum of -0.08MPa. The temperature and vacuum were vacuumized for 10 minutes;

[0056] Step 3: Blend the premixed powder obtained in step 2 with fly ash and sands of different particle sizes, and filter out 70-90 mesh fine river sand by optimizing the particle gradation of the mixture, and mix evenly;

[0057] Step 4: uniformly mix the premixed powder obtained in step 3 with cement, water reducer, latex powder, and cellulose ether to prepare the gypsum-based plastering material.

[0058] 3. Preparation of gypsum-based plastering mortar

[0059] The gypsum-based plastering material prepared above is mixe...

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Abstract

The invention relates to a gypsum-based plastering material. With the dry weight of the gypsum-based plastering material as 100%, the gypsum-based plastering material comprises 30-60% of low-quality desulphurization gypsum, 30-50% of phase-change energy-storage heat-storage material, 0-20% of cement, 0.1-0.8% of retarder, 0-4% of emulsion powder, 0.1-0.6% of water reducing agent, 0.1-0.5% of cellulose ether, 0-5% of pulverized fuel ash and 0-30% of sand. According to the gypsum-based plastering material, the low-quality desulphurization gypsum with high impurity content is used as a main material, resource utilization of the low-quality desulphurization gypsum is achieved, and the gypsum-based plastering material has good performance such as heat preservation, sound insulation, water prevention and bacterium resistance.

Description

technical field [0001] This application relates to but not limited to the technical field of new building materials, and specifically relates to but not limited to a gypsum-based plastering material. Background technique [0002] Gypsum is a porous building material that is sensitive to air humidity and temperature, and has a good ability to adjust environmental humidity and temperature, and the porous structure can be loaded with other functional materials. However, some flue gas desulfurization gypsum contains a certain amount of soluble impurities (such as sodium ions, magnesium ions and chloride ions), and desulfurization gypsum with high impurity ion content has a bad influence on the performance of gypsum products. Gypsum boards made of high desulfurization gypsum are prone to problems such as separation of the board core from the paper core, and frosting on the surface. [0003] In recent years, many scientific research institutes in China have successively carried o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14
CPCC04B28/144C04B2201/32C04B22/0013C04B2103/0057C04B2103/302C04B24/383C04B18/08C04B14/068C04B2103/0071C04B7/00
Inventor 王丽王鹏起王莹谭丹君
Owner BEIJING NEW BUILDING MATERIALS PLC
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