Foamed ceramic thermal insulation plate and manufacture method thereof

Abstract

The invention discloses a foamed ceramic thermal insulation plate and a manufacture method of the foamed ceramic thermal insulation plate. The foamed ceramic thermal insulation plate is prepared from the following components (by weight part): mud 35 to 65 parts, dickite 4 to 10 parts, kaolin 10 to 20 parts, feldspar 5 to 15 parts, calcite 2 to 5 parts, dolomite 5 to 10 parts, modifying agent 0.1 to 0.5 parts, stabilizing agent 0.5 to 1.2 parts, and SiC 0.4 to 1.5 parts. The invention also discloses the manufacture method of the foamed ceramic thermal insulation plate. The foamed ceramic thermal insulation plate provided by the invention has the advantages of low thermal conductivity, fire protection, high temperature resistance, high aging resistance, good consistency with concrete products, low water absorption, and high weatherability, etc., and can be used in the fields of construction, electricity, environmental protection and the like.

Description

technical field [0001] The invention relates to an energy-saving and thermal insulation material for walls, in particular to a foamed ceramic thermal insulation board and a preparation method thereof. Background technique [0002] Building exterior wall insulation system is a very important part of energy-saving buildings, and it is widely used in construction projects at home and abroad. The existing insulation boards mainly include the following types: [0003] 1. The practice of adding a thin layer of plaster to the expanded polystyrene board and strengthening it with glass fiber is currently the most widely used external insulation wall in my country. This method has been widely used in Beijing, Northeast China and other places. Beijing This approach was adopted in projects such as Yujing Garden, Wolong Garden, and the renovation of B8 and B10 buildings of the Ministry of Construction. There are following deficiencies in this scheme: [0004] (1) Poor fire performance;...

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Problems solved by technology

[0004] (1) Poor fire performance;

[0005] (2) The wind pressure resistance of high-rise building insulation layer, especially the resistance to negative wind pressure is unsafe;

[0006] (3) The glue and plastic expansion nails used for external styrene board are polymer materials, which will age and become brittle over time, so the durability is limited. Therefore, Europe and my country have stipulated that the service life should not be less than 25 years. It is stipulated that the destruction of the external insulation layer will cause great losses to the society in the future, increasing the pressure of the waste stream on the environment;

[0007] (4) The externally bonded benzene board cannot meet the needs of pasting glazed tiles on the exterior wall of the building. In case of fire or after 20 to 30 years, the adhesive and plastic expansion nails will become hard and brittle when the service life is reached. There will be a danger of glazed tiles falling off, so the national standard and local standards require that the exterior decoration of the externally bonded styrene board should be painted.

In Harbin, there are very few projects that use external benzene-bonded board walls to paint. There are a large number of projects that use external-bonded benzene boards for insulation but are decorated with glazed bricks. There are unsafe hidden dangers. Even high-rise buildings with a building height of 100 meters use exterior Sticky benzene board insulation inlaid glazed brick decoration;

[0008] (5) It is more difficult to control the construction quality: first, because there are many styrene-based rubber factories with a certain scale, such as Harbin, there are 30 manufacturers, and the quality of the glue may be affected due to fierce price competition. Others The quality of alkali-resistant grid cloth and plastic expansion nails will affect the life of the external adhesive benzene board

In addition, when bonding benzene panels, water must be poured on the dry outer wall to moisten the wall surface, and if the operator is not responsible, there may be leakage of water, which will affect the bonding effect, so there are many factors affecting quality control

Some projects use extruded polystyrene boards to ensure safety. Although this kind of insulation material is good, it cannot solve the problems that the aging of adhesive glue and plastic expansion nails affects the life and the fire prevention of this insulation system is not good. This makes some experts I am very worried about the life of the external styrene board project;

[0009] (6) Due to the damage of termites to expanded polystyrene, it cannot be used in areas with termites; because the ambient temperature requirement for construction is 4°C, it is not suitable for winter construction

This scheme has the following deficiencies: steel wire grid polystyrene boards are plastered with cement mortar for heat preservation, and since the weight of the cement mortar plastering protection layer outside the insulation board is carried by the protruding steel bars in the wall, it is easy to deform the steel bars and make the plastering The fall of the ash layer caused the cracking of the cement mortar plastering layer, and only the seismic experiment on the 50mm steel wire mesh styrene board found that the sound of the steel wire mesh cutting the polystyrene board was heard, especially when the insulation layer was thicker, this problem was more prominent. The cracking of the outer protective layer of the mortar will allow rainwater to enter the insulation layer, which will accelerate the photoaging and oxygen aging of the benzene board and damage the insulation layer.

[0014] 1) The node structure and construction technology of thermal insulation mortar (paste) external wall thermal insulation need to be further improved;

[0015] 2) Due to the very poor flatness of the masonry or pouring on the surface of the wall structure, the thickness of the thermal insulation slurry layer or the bonding mortar layer varies greatly. The thick one is 40-50mm, and the thinner is less than 5mm. The mortar is thinly covered on the surface of the wall structure at the protruding part, which cannot achieve the thermal insulation effect;

[0016] 3) The thick part of the thermal insulation slurry shrinks greatly, resulting in hollowing and cracking, and the thickness does not meet the energy-saving design requirements

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