Portland cement foaming heat preservation board or block and manufacturing method thereof

Abstract

The invention relates to a Portland cement foaming heat preservation board or a block and a manufacturing method thereof. The Portland cement foaming heat preservation board or the block is capable of strengthening heat insulation and heat preservation performances. The Portland cement foaming heat preservation board or the block is prepared by raw materials of, by weight, 99 parts of Portland cement, 5 parts of saturated aluminum sulfate, 1 part of water reducing agents and 0.5-1 part of hydrogen peroxide, the Portland cement, the saturated aluminum sulfate and the water reducing agents are proportionally taken and then placed in a mixer, water is added into the mixer to be mixed with the raw materials and then stirred for 5-10 minutes to prepare a foaming cement slurry, the water is added according to the weight ratio of the water to the raw materials of 100: (60-80), the hydrogen peroxide is proportionally taken, water is added to the hydrogen peroxide, the hydrogen peroxide and the water are subjected to pre-foaming to manufacture foams by means of a foaming machine, the water is added according to the weight ratio of the hydrogen peroxide to the water of 0.01: 1, the foams and the foaming cement slurry are placed into a foam stirrer for even stirring, the mixture is injected to a mold for solidification molding, and the mold is removed to obtain the density Portland cement foaming heat preservation board or the block. Portland cement enables a solidified board to form a foaming structure under the action of the hydrogen peroxide so that weight of walls is reduced, and the heat insulation and heat preservation performances are strengthened.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation boards for building walls, and in particular relates to a Portland cement foamed thermal insulation board or block which can greatly enhance heat insulation performance and a manufacturing method thereof. Background technique [0002] Existing foam insulation boards on the market are foam insulation boards made of organic polymer materials such as plastics and rubber as base materials. For example: extruded board, polypropylene foam board, polystyrene board and polyurethane board, etc. The source of the base material of this foam insulation board is petrochemical products, which not only consumes a lot of energy, but also causes a shortage of raw material resources. Rather than energy saving, and the production process is complicated, the cost is high, and there are insurmountable natural defects: not resistant to high temperature, easy to burn, poor anti-aging, release of toxic and har...

AI Technical Summary

Problems solved by technology

For example: extruded board, polypropylene foam board, polystyrene board and polyurethane board, etc. The source of the base material of this foam insulation board is petrochemical products, which not only consumes a lot of energy, but also causes a shortage of raw material resources. Rather than energy saving, and the production process is complicated, the cost is high, and there are insurmountable natural defects: not resistant to high temperature, easy to burn, poor anti-aging, releasing toxic and harmful substances, etc.

Although polystyrene board has good thermal insulation performance, it has certain disadvantages when used in roof insulation, such as the small heat storage coefficient of polystyrene board and poor heat insulation performance. Small, it cannot meet the heat insulation requirements well

Generally, polystyrene board is used as the heat insulation layer in floor heating construction, which cannot be well combined with the original base surface, and has no effective adhesion, resulting in delamination, hollowing, cracking, etc.

There are also foamed cement boards on the market. The foamed cement is usually made of sulfur-aluminum cement, which is a kind of rapid hardening cement. Although the setting speed is fast in the foaming molding process, due to the high price, more foamed cement The production cost of the board; if ordinary Portland cement is used, the price is low, but in the foam molding process, the molding and solidification time takes 1 day, and there are defects that the setting speed is slow and the mold is easy to collapse, resulting in low production efficiency and the product It is difficult to guarantee the quality of