Perlite is a kind of insulation material. Perlite is a kind of volcanic eruption acid lava. The glassy rock that has been rapidly cooled is named because it has a pearl crack structure. Perlite mines include perlite, obsidian and rosin. Perlite as the main competitor of organic insulation materials in the domestic or inorganic insulation materials, then the development trend of perlite insulation materials? Let's go and see.
What is perlite?
Perlite mines include perlite, obsidian and rosin. The difference between the three is that perlite has a circular-arc crack due to condensation, which is called perlite structure and has a water content of 2 to 6%; rosin rock has a unique rosin sheen with water content of 6 to 10%; Obsidian has glass Gloss and conchoidal fracture, water content is generally less than 2%. Perlite is a volcanic eruption of acid lava. The glassy rock, which has been rapidly cooled, has its name given its pearl crack structure.
Perlite use
1. Construction industry
Concrete aggregates; lightweight, heat-retaining, heat-insulating sound-absorbing panels; building materials such as fireproof roofs and lightweight antifreeze, shockproof, fireproof, and radiation resistant high-rise building walls such as fillers and mortar; various industrial equipment and pipeline insulation layers; The inner walls of various cryogenic and cold storage projects; the low-boiling point liquids, the internal storage walls of gases, and the inner walls of transportation vehicles.
2. Filter aids and fillers
Production of molecular sieves, filters, detergents; used in winemaking, making juices, beverages, syrups, sugar, vinegar, etc. Filtration of fine particles, algae, bacteria, etc. in the food processing industry; purification of various liquids; purified water can be achieved for humans and animals Degree of harm; chemical industry plastics, spray paint industry detoxification, purification of waste oil, petroleum dewaxing, fractionation of alkanes, hydrocarbons; as fillers for paint enamels, glazes, plastics, resins, and rubber industries; catalysts for chemical reactions, and oil wells Grout mix.
Perlite Insulation Materials Development Trend
Perlite, as the main competitor of organic insulation materials in China, is still in inorganic insulation materials. In the series of inorganic insulation materials, it is foam concrete, which has the advantages of easy availability of raw materials, simple production process, low price, and low toxicity. In addition to its thermal insulation properties, foamed concrete also has properties such as heat insulation, fire protection, and sound insulation. This meal is easy to maintain and can be reused. However, compared with perlite, the thermal conductivity is high, the thermal insulation performance is poor, and the bulk density is high, and the load-bearing performance is inferior to the perlite insulation material.
We analyze from the macroscopic point of view, the biggest competitor to Perlite has two types of products: organic insulation box inorganic insulation material. Insulation material of inorganic insulation is slightly poorer, but fire retardant, flame retardant, deformation coefficient is small, anti-aging, stable performance, good combination in the wall base, safe and stable, can be recycled. Organic insulation materials have light weight, high sealing, and good insulation effect, but the disadvantages are: easy to age, easy to deform, unstable, easy to burn, construction is difficult, the project cost is high, its resources are non-renewable resources, can not be recycled use.
In the fiercely competitive Chinese market economy, the survival of the fittest is an eternal truth. Although perlite is widely used in various fields and is an industry of the end of the period, its field has already faced severe challenges. In the near future, many materials will replace perlite. In the field of competitor materials, as a thermal insulation material for mortar and construction, flaky meteorites are one of the most competitive materials, lightweight aggregates such as: expansive clay, shale, volcanic limestone, volcanic ash , Foam cement, they have low cost, high structural strength and exceed perlite.
Perlite is most vulnerable to various mineral products when used as adsorbents, abrasives, and additives. In cryogenic engineering, opaque aerosols and a film composed of aluminum and glass cloth can be substituted for perlite.
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