1. Sound and vibration-absorbing materials
Mica boasts one of the natural materials with the best sound insulation performance. Coarser-grained mica powder is widely used in asphalt lining and diaphragms to block and absorb noises and vibrations from the engine, ground friction and external sources.
2. Braking materials
Its high heat insulation performance and flaky texture make it possible to insulate heat and absorb noise.
3. Resin materials
To reduce the weight of automobiles, more and more automobile parts are replaced by resin materials, in which mica is widely used to increase their strength or rigidity, dimensional stability and even sound insulation performance.
1. Cement fiber decoration board
As people become more concerned about environmental protection, more and more present-day civil buildings have started to cancel pure wooden structures and use a product that both retains some of the wooden elements and has modern features as the exterior wall decoration material of buildings. This is what we call “cement fiber decoration board”. In addition to containing wooden fiber, this material is more convenient for standardized production and construction as it can be drilled and sawn like conventional timbers. Its rich color and pattern as well as good selectivity have made it widely welcomed. However, the presence of wooden content in this material also raises a question of moisture-induced deformation. Then, the addition of mica powder offers a good solution to the dimensional stability as well as improves the fire resistance of the board.
2. Sealant
When mica powder is added into sealant, it helps prevent dry shrinkage and increase the fluidity of the sealant.
Resin parts are frequently seen in home appliances and office equipment from stationary parts, casings or moving parts. Their rate of application also increases every year. In these applications, mica is used to stabilize dimensions, increase strength and rigidity and as an electric insulating material.
Mica powder is added into anticorrosive coatings as a pigment. In the undercoat for bridges, ships and containers, mica powder helps shield corrosive factors like water, oxygen or ions from penetrating and cut off capillary pores in paint films. Parallel-folded flakes also help delay corrosion factors penetrating paint films, thereby improving the corrosion resistance of the coating.
In exterior wall coatings, mica powder is added to prevent the coating from cracking, improve the ultraviolet resistance, increase the weather resistance, improve the fluidity of the coatings and makes them easier to work with.
The good heat resistance, plus the flaky texture, of mica powder enables it to block heat transmission and withstand heat in heat insulating material.
In welding electrode coating (cover) material, mica powder does not only prevent the cover from cracking and increases the strength of the coating, but also provides useful components to keep the welding arc stable and reduce weld spatter.
Lightweight, loose, unconsolidated with large coverage, mica powder is used in dry chemical fire suppressant to improve its binding resistance and fluidity as well as help block heat transmission and combustion when dry chemical fire suppressant is sprayed into flame.
When mixed with asphalt, metal wire or the like, mica powder can be produced into solid road reinforcing compound that is in-situ melted to mend surface cracks, cure expressway turnings and facilitate movable roadbed.
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Applications
Applications
The special texture and properties of mica have accounted for its wide application.
Man came to know mica in early years. At first, large flatly crystallized mica crystals were used as glass. Chips having special glosses were also used as decoration material or ground into powder as pigment for wall paintings. It was also included into the pharmacopoeia of traditional Chinese medicine.
In the late 18th century, large-flake mica started to appear in the electric industry as an electric insulating material. It was also used as the water level window material for high-pressure steam boilers to prevent the glass from being eroded by high-pressure steam. In the 1960s, mica was made into insulating paper. This greatly expanded the range and quantity of its application in the electric insulating field, which lasts until today.
With the process in modern material sciences, man has greatly improved its ability of developing and utilizing mica since the 1960s. Applications are no longer limited to using large mica as an electric insulating material, flaky fragments, which could not be used as an electric insulating material in the past, are also developed. As an immense pool of this kind of mica has been buried underground, is easier to recover and can provide a cost effective industrial filling, mica powder, after refinement, grinding and grading, hundreds of thousands of tons are consumed across the globe every years. Its application covers automobile (sound and vibration-absorptive material, braking material, support and diaphragm), building material (cement fiber decoration board, gypsum board, roof tile), home appliances and OA resin, engineering plastics, heat-insulating material, anticorrosive and building coating, fire suppressant, welding electrode, road reinforcing compound, refractory cement and drilling mud material.
Man came to know mica in early years. At first, large flatly crystallized mica crystals were used as glass. Chips having special glosses were also used as decoration material or ground into powder as pigment for wall paintings. It was also included into the pharmacopoeia of traditional Chinese medicine.
In the late 18th century, large-flake mica started to appear in the electric industry as an electric insulating material. It was also used as the water level window material for high-pressure steam boilers to prevent the glass from being eroded by high-pressure steam. In the 1960s, mica was made into insulating paper. This greatly expanded the range and quantity of its application in the electric insulating field, which lasts until today.
With the process in modern material sciences, man has greatly improved its ability of developing and utilizing mica since the 1960s. Applications are no longer limited to using large mica as an electric insulating material, flaky fragments, which could not be used as an electric insulating material in the past, are also developed. As an immense pool of this kind of mica has been buried underground, is easier to recover and can provide a cost effective industrial filling, mica powder, after refinement, grinding and grading, hundreds of thousands of tons are consumed across the globe every years. Its application covers automobile (sound and vibration-absorptive material, braking material, support and diaphragm), building material (cement fiber decoration board, gypsum board, roof tile), home appliances and OA resin, engineering plastics, heat-insulating material, anticorrosive and building coating, fire suppressant, welding electrode, road reinforcing compound, refractory cement and drilling mud material.
BHT® MICA had established itself as a safe, reliable industrial mineral filling with stable quality after caustic selection and constant use by different users. It has played a critical role in the following industrial applications:
Automobile
1. Sound and vibration-absorbing materialsMica boasts one of the natural materials with the best sound insulation performance. Coarser-grained mica powder is widely used in asphalt lining and diaphragms to block and absorb noises and vibrations from the engine, ground friction and external sources.
2. Braking materials
Its high heat insulation performance and flaky texture make it possible to insulate heat and absorb noise.
3. Resin materials
To reduce the weight of automobiles, more and more automobile parts are replaced by resin materials, in which mica is widely used to increase their strength or rigidity, dimensional stability and even sound insulation performance.
Building materials
1. Cement fiber decoration boardAs people become more concerned about environmental protection, more and more present-day civil buildings have started to cancel pure wooden structures and use a product that both retains some of the wooden elements and has modern features as the exterior wall decoration material of buildings. This is what we call “cement fiber decoration board”. In addition to containing wooden fiber, this material is more convenient for standardized production and construction as it can be drilled and sawn like conventional timbers. Its rich color and pattern as well as good selectivity have made it widely welcomed. However, the presence of wooden content in this material also raises a question of moisture-induced deformation. Then, the addition of mica powder offers a good solution to the dimensional stability as well as improves the fire resistance of the board.
2. Sealant
When mica powder is added into sealant, it helps prevent dry shrinkage and increase the fluidity of the sealant.
Thermoplastic resin
Resin parts are frequently seen in home appliances and office equipment from stationary parts, casings or moving parts. Their rate of application also increases every year. In these applications, mica is used to stabilize dimensions, increase strength and rigidity and as an electric insulating material.Coating
Mica powder is added into anticorrosive coatings as a pigment. In the undercoat for bridges, ships and containers, mica powder helps shield corrosive factors like water, oxygen or ions from penetrating and cut off capillary pores in paint films. Parallel-folded flakes also help delay corrosion factors penetrating paint films, thereby improving the corrosion resistance of the coating.In exterior wall coatings, mica powder is added to prevent the coating from cracking, improve the ultraviolet resistance, increase the weather resistance, improve the fluidity of the coatings and makes them easier to work with.
Heat-insulating materials
The good heat resistance, plus the flaky texture, of mica powder enables it to block heat transmission and withstand heat in heat insulating material.Welding electrode
In welding electrode coating (cover) material, mica powder does not only prevent the cover from cracking and increases the strength of the coating, but also provides useful components to keep the welding arc stable and reduce weld spatter.Fire suppressant
Lightweight, loose, unconsolidated with large coverage, mica powder is used in dry chemical fire suppressant to improve its binding resistance and fluidity as well as help block heat transmission and combustion when dry chemical fire suppressant is sprayed into flame.Road reinforcing compound
When mixed with asphalt, metal wire or the like, mica powder can be produced into solid road reinforcing compound that is in-situ melted to mend surface cracks, cure expressway turnings and facilitate movable roadbed.Others
In other applications, mica is also playing a great role with its unique properties. Its application will continue to be expanding.
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