Initiator of building material and preparation method and application thereof

Abstract

The invention discloses an initiator of a building material and a preparation method and application thereof. The initiator comprises calcium stearate, aqueous solution of sodium hexametaphosphate, and fly ash. The initiator can effectively reduce the surface tension of a light building material slurry system, enhances the gas retention capacity of slurry and is favorable for ensuring that foamed pores formed in the foaming process of the slurry in gas, liquid and solid phase states are stable and uniformly distributed and have a closed pore structure; in addition, the pore size of the foamed pores can be adjusted by controlling the addition amount of the initiator. By the initiator, various light building materials with different components, different volume weight, different compression strength, different heat conduction coefficients and different application can be prepared, so that various properties of the light building materials can be obviously improved, and the requirements of modern rooms on the thermal insulation property, sound insulation property, energy saving property and the like of the building materials are met.

Description

technical field [0001] The invention relates to an initiator, in particular to an initiator for building materials and its preparation method and application. Background technique [0002] Buildings built with bricks, stones or cement products have poor thermal insulation, heat insulation, and sound insulation performance, and require a large basic investment for the building. At present, in modern buildings, especially in high-rise frame buildings, lightweight foaming building materials have been gradually used to replace traditional building materials, such as the lightweight foaming building materials disclosed in Chinese patents 88105139.X, 92102197.6, and 92106052.1. Foam products made of magnesium chloride and magnesium oxide as binders. These new building materials are foamed with magnesium chloride and magnesium oxide as cementing material and fly ash as auxiliary cementing material. They have the advantages of light volume, heat preservation, heat insulation, Perfo...

AI Technical Summary

Problems solved by technology

The main disadvantage of the above foaming method is that it is difficult to control the pore size of the cells formed inside the foamed product, the size of the cells is uneven, most of the cells are open cells, and some foamed products need high-pressure steaming, and some must be fired at high temperature. into, complex production equipment

This is mainly because the initiator used in the above method cannot effectively reduce the surface tension of the fly ash slurry system, resulting in insufficient foaming ability of the fly ash slurry, the formed cells are unstable, and the bubbles are broken prematurely. It can not play the role of adjusting the cell aperture. For example, in the Chinese patent whose authorized announcement number is CN 1051952C, the initiator used is FN water reducer and silicone oil; The agent is simethicone oil; in the Chinese patent whose authorized announcement number is CN 1138727C, the initiator used is calcium stearate, FD-1 antirust agent and mixed phosphate