Preparation method of foamed cement insulation boards

Abstract

The invention discloses a preparation method of foamed cement insulation boards, comprising the following steps: uniformly mixing gel materials, coal ashes, fiber reinforced materials and foaming stable dispersants at the first, adding hot water with the temperature of 40-60 degrees centigrade in the mixed powder to stir and form sizes; adding foaming agents such as hydrogen peroxide into the uniformly-stirred sizes; stirring uniformly; pouring into moulds to foam; keep the temperature with greenhouses; curing and forming; demoulding; maintaining at the room temperature for 24 h; cutting to form decorative plates; and forming the foamed cement insulation boards with the strength the same as the service life of materials of walls and the flame retardant property reaching grade A after curing naturally for 30 d.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a preparation method of a foamed cement thermal insulation board for thermal insulation and decoration of interior and exterior walls of buildings. Background technique [0002] With the deepening of national energy conservation and emission reduction work, the promotion of building energy conservation measures and the mandatory requirements of policies, higher requirements have been put forward for the flame retardancy, heat preservation and practicality of thermal insulation decorative materials for external wall thermal insulation. Especially in recent years, the fire of the new CCTV building and the fire of the teachers' apartment in Jing'an Temple in Shanghai have suffered heavy fire losses. Gongtong Zi [2009] No. 46 "Interim Provisions on Fire Protection of External Thermal Insulation Systems and Exterior Wall Decorations of Civil Buildings" and Gong Tong Zi [2...

AI Technical Summary

Problems solved by technology

[0003] The existing cement foam insulation boards in the market, due to the uneven technical level, the quality is good and bad, mainly because the mold is easy to collapse during production, the size of the bubbles is uneven, the distribution is uneven, the defective rate is high, and the thermal conductivity is high. Check the strength, poor sound insulation performance, fragile and fragile

These directly affect the popularization and production costs

After researching and analyzing the production process of foamed cement insulation boards and the causes of poor quality, a method for making foamed cement insulation boards was invented. The products of this process have stable quality, high strength, flame retardancy, heat preservation, and sound insulation and noise reduction effects. it is good