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Why do insulation coatings need to be mixed with microsilica?

insulation coatings

Insulation coating is an important energy-saving material to reduce reduce the intrusion of heat from outside into the room, with the continuous development in recent years, more and more companies began to use the composite silicate insulation coating mixed with microsilica, and abandon the traditional organic and inorganic materials, such as expanded perlite products, etc., then why should be mixed with microsilica? Today HSA will talk to you about the advantages of insulation coatings using microsilica?

The performance of microsilica

Microsilica is usually called silica dust, is the flue gas recovery dust of ferrosilicon metallurgy, its main component is silica, with fine particles, good fluidity, activity, etc. After years of research and practical use, microsilica when mixed into the cement and concrete, can increase the full filling of its internal pores, increase the density, and make the cement and concrete impermeability, frost resistance performance has been greatly improved.

In many insulation coatings, more and more began to use a composite silicate insulation coating, this coating is mixed with microsilica, microsilica in which still has a high activity, can increase the dense degree of this material, so that it is effective in blocking external heat, more advantageous than the traditional hard insulation coating.

The advantages of insulation coating using microsilica

  1. Micro silica powder composite silicate thermal insulation coating inherits the nature of silicate stability, dust-free, non-toxic, non-irritating to human body and not deformed after use, non-corrosive, stable and reliable, can be applied to different working environments, with good stability.
  2. Composite silicate thermal insulation coating containing micro silica powder has good decorative property, it is not only applicable to new buildings, but also can be repackaged for old houses and old walls.
  3. After drying, the compound silicate insulation coating with micro silica powder has certain compressive strength and adhesive strength, and the non-load-bearing parts do not need to make shells, which is very simple in construction, eliminating the support pieces, and can be applied on site, without the need of protective layer, not limited by the shape of insulation surface, thus also saving the construction cost.
  4. Can be used for thermal state repair, microsilica composite silicate insulation coating can be very convenient for thermal state repair without affecting the normal operation of the equipment.


In addition to the above advantages, the use of microsilica insulation coating in shaped equipment has the advantages of other insulation coatings can not be compared. Shaped equipment insulation has been a major problem in the insulation industry, mainly because of the special appearance of shaped equipment, complex shape, surface changes, and hard insulation materials are generally boards, tiles and other profiles, very bad installation. But microsilica compound silicate insulation coating is paste, plasticity, can be coated into any shape, no waste of material, no need to make shell and good sealing.

The insulation coating containing microsilica

microsilica compound silicate thermal insulation coating is a barrier thermal insulation coating, it is a new type of energy-efficient thermal insulation coating with microporous mesh structure (wet state is gray-white sticky paste). At the beginning of this kind of thermal insulation coating, the main raw material is loosened seafoam, and the main binder is water glass. Later, in addition to seafoam, a large amount of expanded perlite, expanded vermiculite, drift beads, fly ash, microsilica, diatomaceous earth, asbestos, glass wool, mineral wool, aluminosilicate fiber, etc. The binder used is also developed from single water glass to gypsum (room temperature), cement (room temperature), high alumina cement (medium temperature), silica sol (high temperature), etc, silica sol (high temperature) and other composite use. Among them, microsilica is an important source of silica compounds. In addition, various additives are added to improve various properties of the coating, such as fluidity, hardening, water repellency, high temperature resistance, reflectivity, etc. After mechanical beating, foaming, mixing and other processes to make paste insulation coating.

The advantages of using microsilica in insulation coatings can be summarized as easy production process, can be coated, easy construction, good overall insulation layer, etc. Moreover, microsilica is also one of the very important raw materials as the main source of silica compounds in this coating.

HSA Microsilica

HSA has been a global supplier of high-quality silica fume since 2001. We have established long-term and stable cooperation with many concrete construction companies around the world to provide our customers with high-quality silica fume with different contents and different uses, fully satisfying all kinds of concrete project needs.

If you have any needs for concrete, please feel free to contact us!

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