The density of fireproof material and porosity are fireproof to its degree of effect with having main with function. It is them below the influence to fireproof material:
Density is right fireproof spent influence: High density spends: The fireproof stuff that has high density has better fireproof performance normally, because high density data is more hard,mix high temperature resistant. They can resist high temperature, thermal shock and heat expand better. Density: The material with little density may be corroded the influence with thermal shock more easily by high temperature. They may not apply to the application that needs higher fireproof performance.
Porosity is right fireproof spent influence: Low porosity: The low porosity of fireproof material states their structure is more compact, can reduce high temperature gas and liquid to permeate. This can raise the corrosion resistance of material and impervious to appear a gender. Tall porosity: The fireproof material of tall porosity contains a lot of small air hole normally, this may make its more easily high temperature is corroded, because corrode medium can infiltration stoma eats stuff. As a whole, balance exists between density and porosity. The fireproof stuff that has measurable porosity can absorb heat to expand on certain level the stress that cause, conduce to thereby prevent craze. Nevertheless, in certain high temperature, tall corrosion environment, the fireproof material of low porosity and high density normally more reliable.
As a whole, choose right fireproof stuff to need to consider the demand of specific application integratedly, include temperature, chemistry to corrode the property, element such as thermal shock. Different application may need the fireproof data that amiable aperture leads different density, in order to satisfy its specific function requirement.
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