The Study Of Inorganic Composite Wall Insulation

The most important part of external wall insulation is the insulation, which determines its quality and effect of saving energy and reducing pollution. But in the current market, the insulation material is mainly organic. The organic heat preservation material is prohibited to use by state because it can't meet the level A fire performance requirements. Though the traditional inorganic heat preservation material can meet level A fire performance requirements, it also exists some problems such as the poor ventilation, non-standard combustion-resistant property, not strong enough, and the complicated production process. As a result, we did a series of experiments and then developed a new type of inorganic insulation material. It can not only reach level A combustion performance, but also has some advantages, such as heat insulation, good permeability, moderate strength, simple manufacturing process, the production of low cost, less pollution to the environment, and so on.In this paper, the sample of inorganic compound heat preservation material is made from expansion perlite, magnesium hydroxide, magnesium chloride, talcum powder, animal and plant protein foaming agent. We had permeability test, water absorption insulation test, mechanical strength and stays test, and get the following main conclusion:(1) At room temperature and atmospheric pressure, the formula with 30% perlite, 35% magnesium hydroxide, magnesium chloride 25%,10% talc, blowing amount of 10L/1m3 not only takes shape better, but also its thermal performance is the best.(2) Permeability of Inorganic composite insulation materials prepared is much better than that comparison samples of organic insulation materials, because the structure of the organic material is much denser than inorganic materials, and its pores are less.(3) Bibulous performance of inorganic materials is not better than that of organic materials. (4) Compression performance of inorganic insulation materials is better than that of organic insulation materials.To sum up, although water absorption of inorganic materials is a bit poor, but inorganic heat preservation material are better than organic heat preservation material in other areas, especially to meet level A combustion performance, that is the organic materials can not achieve.In this paper, a range of existing, relatively safe operation of the performance had been tested and finally confirmed the superiority of the new insulation material.