Manufacturing method of light building board

Abstract

The invention discloses a manufacturing method of a light building board. The manufacturing method comprises the following steps: adding a balanced amount of starch expanded material in foamed rapid hardening cement mixed slurry to be stirred uniformly, injecting the rapid hardening cement mixed slurry containing the starch expanded material into a forming mould for hardening forming. Since the hardening time of the rapid hardening cement is short, and the starch expanded material has certain water resistance, during the cement hardening process, the rapid hardening cement has been prehardened before the starch expanded material scatters and is dissolved, but the interior of the rapid hardening cement has no flowability, and the starch expanded material can be poured into a foamed space to reduce the volume weight of the product to enable the product to be lighter. Meanwhile, during the process of foamed magnesium cement hardening, most of the starch expanded material forms starch glue through micro-grinding and high-temperature gelatinization, and the starch expanded material is diffused toward the surrounding space in a starch glue form at the later period of hardening, so that the flexural and compressive strength of the product is improved greatly.

Description

technical field [0001] The invention relates to the technical field of building decoration materials, in particular to a method for manufacturing lightweight building boards. Background technique [0002] The existing color steel plate structure is usually filled with light materials between two steel plates, such as adding foam particles to the foamed cement. The bonding strength of foamed cement also makes the color steel plate lighter. Although the color steel plate of this structure can meet some light weight and have good strength requirements, but because foam particles are added to the foamed cement, when the color steel plate is near the high temperature of the fire, although there will be no open fire, but the high temperature The foam particles of the polymer material emit toxic and harmful gases, so that the fire prevention of the color steel plate cannot meet the requirements. Contents of the invention [0003] The main technical problem to be solved by the p...

AI Technical Summary

Problems solved by technology

Although the color steel plate of this structure can meet some light weight and have good strength requirements, but because foam particles are added to the foamed cement, when the color steel plate is near the high temperature of the fire, although there will be no open fire, but the high temperature The foam particles of the polymer material emit toxic and harmful gases, which makes the fire protection of the color steel plate fail to meet the requirements