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Retarder for building plaster-base plastering gypsum and preparing method

A technology of plastering gypsum and setting retarder, which is applied in the field of setting retarder and production of plastering gypsum-based plastering gypsum, can solve problems such as reducing the strength of gypsum, and achieve the effects of reducing the strength of gypsum and reducing the rate of strength loss.

Inactive Publication Date: 2016-07-27
SUZHOU XINGBANG CHEM BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The action process of retarder on gypsum is to affect the dissolution, hydration and crystallization process of gypsum, thus changing the setting time, crystal morphology and microstructure of gypsum, thereby reducing the strength of gypsum

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Provide a kind of retarder for building gypsum-based plastering gypsum, including bone collagen, calcite powder, citric acid and exciter, the formula composition of described retarder comprises: by weight, bone collagen 60 parts , 4 parts of calcite powder, 15 parts of citric acid, 3 parts of activator.

[0016] Wherein said bone collagen comprises bovine bone collagen and fish bone collagen, and said bovine bone collagen accounts for 70% of said bone collagen total mass, and said fish bone collagen accounts for 70% of said bone collagen total mass 30%. The particle size of the calcite powder is 600 mesh-1000 mesh. The citric acid is building material grade. The particle size of the activator is 1000 mesh.

[0017] Production method: Mix the raw materials of the retarder with a vertical mixer for 10-30 minutes, then sieve through a 400-mesh square hole sieve, remove the residue, and the part under the sieve is the finished retarder.

Embodiment 2

[0019] Provide a kind of retarder for building gypsum base plastering gypsum, comprise bone collagen protein, calcite powder, citric acid and exciter, the formula composition of described retarder comprises: by weight, bone collagen protein 50 parts , 6 parts of calcite powder, 20 parts of citric acid, 2 parts of activator.

Embodiment 3

[0021] Provide a kind of retarder for building gypsum base plastering gypsum, comprise bone collagen protein, calcite powder, citric acid and exciter, the formula composition of described retarder comprises: by weight, bone collagen protein 70 parts , 2 parts of calcite powder, 10 parts of citric acid, 5 parts of activator.

[0022] The beneficial effects of the present invention are:

[0023] 1. The retarder is a new type of gypsum retarder with great development potential, which can significantly reduce the strength loss rate, thereby reducing the strength of gypsum;

[0024] 2. The research on retarder is the most effective way to improve the technical and economical cement of gypsum-based materials and promote the scientific and technological progress of the gypsum industry.

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Abstract

The invention discloses retarder for building plaster-base plastering gypsum.The retarder is prepared from, by weight, 50-70 parts of ossein protein, 2-6 parts of calcite in powder, 10-20 parts of citric acid and 2-5 parts of activator.In this way, the retarder for the building plaster-base plastering gypsum is novel gypsum retarder with excellent development potential and can remarkably reduce the strength loss rate so that the gypsum strength can be reduced.The study on the retarder is the most effective approach for improving the gypsum-base material technical and economical cement and promoting scientific and technological progress of the gypsum industry.

Description

technical field [0001] The invention relates to a setting retarder and a preparation method, in particular to a retarder and a preparation method for building gypsum-based plastering gypsum. Background technique [0002] The role and influence of retarder on gypsum are various. Various data show that the gypsum retarder will adversely affect the microstructure of the gypsum hardened body to varying degrees while retarding the setting, resulting in a serious loss of strength. Although there are many studies on how to reduce the negative impact of retarders on the strength of gypsum, they have not fundamentally solved the problem. High-efficiency retarder for building gypsum is a new type of gypsum retarder with great development potential, which can significantly reduce the rate of strength loss. [0003] The action process of retarder on gypsum is to affect the dissolution, hydration and crystallization process of gypsum, thereby changing the setting time, crystal morpholo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/14
CPCC04B40/0039C04B2103/22
Inventor 王香港周建军毛荣良戴明伟
Owner SUZHOU XINGBANG CHEM BUILDING MATERIALS
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