Anti-sagging light gypsum for ceiling and preparation method of anti-sagging light gypsum

An anti-sag and gypsum technology, applied in the field of building thermal insulation materials, can solve problems such as the contradiction between initial viscosity and workability, easy sag in ceiling construction, poor thermal insulation performance, etc. The effect of adhesion

Active Publication Date: 2019-12-03
CHONGQING JIANDA BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are several key problems in the use of lightweight gypsum for the ceiling. First, the ceiling construction is easy to hang. Since it is used for the ceiling, it is under the structural slab, and the effect of gravity is particularly significant.
The second is the contradiction between initial viscosity and workability. Generally speaking, the better the initial viscosity, the worse the workability, especially the shorter the operability time.
The third is the contradiction between bond strength and density. Generally speaking, the higher the bond strength, the greater the density, so the greater the thermal conductivity, the worse the thermal insulation performance

Method used

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  • Anti-sagging light gypsum for ceiling and preparation method of anti-sagging light gypsum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An anti-sagging lightweight gypsum for a ceiling, the raw materials used and their quality are as follows:

[0027]

[0028] in:

[0029] The particle size of building gypsum is all less than 80 μm, and the mass of particle size <15 μm is 40 kg; the mass of particle size distribution between 15 μm and 45 μm is 35 kg; The mass proportions of the three intervals of 15 μm to 45 μm and 45 μm to 80 μm are 40:35:25 respectively;

[0030] The particle size of the vitrified microbeads is 80 μm to 250 μm, and the mass of the particle size distribution of 80 μm to 180 μm is 16 kg, and the mass of the particle size distribution of 180 μm to 250 μm is 9 kg; that is, the mass ratio of the two intervals is 16:9 respectively ;

[0031] The water adopts ordinary tap water;

[0032] The anti-sagging thixotropic agent is 6650R high-performance amide wax micropowder;

[0033] The adhesive is vinyl acetate-ethylene copolymer redispersible latex powder; white powder, particle size 0....

Embodiment 2

[0039] An anti-sagging lightweight gypsum for a ceiling, the raw materials used and their quality are as follows:

[0040]

[0041] The specification and preparation method of the above-mentioned raw materials are the same as in Example 1.

Embodiment 3

[0043] An anti-sagging lightweight gypsum for a ceiling, the raw materials used and their quality are as follows:

[0044]

[0045] The specification and preparation method of the above-mentioned raw materials are the same as in Example 1.

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Abstract

The invention relates to anti-sagging light gypsum for a ceiling. The light gypsum comprises the following raw materials in parts by mass: 100 parts of calcined gypsum, 25-35 parts of glass beads, 75-85 parts of water, 0.2-0.5 part of a thixotropic agent, 0.2-0.6 part of an adhesive, 0.2-.05 part of a water retaining agent, 0.3-0.9 part of a water reduction agent and 0.2-0.5 part of a retarder. The light gypsum is prepared by composite means of overall grain composition optimization, appropriate additive proportioning, and the like, related problems in construction procedures of heat preservation on floors of different families can be solved, and the light gypsum which is capable of preventing sagging and has high bonding strength can be prepared, so that the light gypsum is very applicable to ceiling construction, meanwhile, has excellent heat preservation performance, thus is capable of greatly reducing building operation energy consumption, and can be applied to industrial production.

Description

technical field [0001] The invention belongs to the technical field of building thermal insulation materials, and relates to a sag-resistant lightweight gypsum for ceilings and a preparation method thereof, and further relates to the application of the sag-resistant lightweight gypsum for ceilings. Background technique [0002] With the deepening of the promotion and application of energy-saving buildings, household floor slabs must take insulation measures to meet the basic threshold requirements of 65% building energy efficiency. At present, the materials used for the insulation layer of household floor slabs include inorganic insulation mortar, polystyrene particle insulation slurry, foam concrete, benzene board, composite silicate board, and all-light concrete. These insulation layer materials are all used on the structural layer of the household floor slab, so they are required to reach a certain compressive strength. However, the strength of the insulation layer of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/40
CPCC04B28/14C04B2111/40C04B2201/20C04B2201/32C04B2201/50C04B18/027C04B24/287C04B24/2623C04B24/383C04B24/223C04B24/06C04B24/14
Inventor 彭家惠刘先锋张建新朱聪瞿金东曹文湘
Owner CHONGQING JIANDA BUILDING MATERIAL
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