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Mica Flakes Revolutionizing the Rubber Industry Comprehensive Guide to High-Performance Fillers
Mica flakes, with their distinctive lamellar structure, exceptional chemical stability, and remarkable compatibility with rubber matrices, have firmly established themselves as high-performance functional fillers in the rubber industry. Unlike conventional fillers such as carbon black or calcium carbonate, mica flakes offer a unique combination of mechanical reinforcement, weather resistance, and dimensional stability, making them the ideal choice for rubber products operating in harsh environments, including automotive seals, industrial rubber hoses, and conveyor belts.
In the realm of automotive rubber seals, including door seals, window seals, and engine gaskets, mica flakes play a pivotal role in enhancing tear resistance and compression set performance. These seals are subjected to frequent mechanical stress, extreme temperature fluctuations ranging from -40°C to 120°C, and prolonged exposure to UV radiation, factors that can cause ordinary rubber seals to crack, harden, or lose elasticity over time.
The addition of 8%-15% of high aspect ratio mica flakes, with a particle size of 30-80 μm and an aspect ratio of ≥100, to ethylene-propylene-diene monomer (EPDM) rubber yields impressive results. The tear strength of the rubber increases by 40%-60%, while the compression set rate, measured after 70 hours at 100°C, drops significantly from 35% to 15%. A leading automotive parts manufacturer in Germany conducted extensive tests using our mica flakes in EPDM door seals. The results were remarkable: the seals maintained their elasticity and sealing performance for 500,000 opening and closing cycles, compared to just 300,000 cycles for seals without mica flakes. This extended service life not only reduces maintenance costs for vehicle owners but also enhances the overall reliability of automotive products.
For industrial rubber hoses used in the transfer of chemicals, oil, and water, mica flakes are instrumental in enhancing chemical resistance and pressure resistance. These hoses frequently come into contact with corrosive media and must withstand high internal pressures of up to 10 MPa. Mica flakes, with their impermeable lamellar structure, form an effective barrier within the rubber matrix, reducing the penetration of chemicals by 50%-70%.When added to nitrile rubber (NBR) hoses at a dosage of 10%-20%, mica flakes significantly increase the burst pressure of the hose by 25%-35% and extend its service life in oil transfer applications from 1 year to 2-3 years. A chemical plant in the Netherlands put our mica-reinforced NBR hoses to the test in the transfer of 20% concentrated sulfuric acid. The results were conclusive: after 12 months of continuous use, the hoses showed no signs of swelling or leakage, whereas standard NBR hoses failed after just 4 months. Additionally, mica flakes improve the dimensional stability of rubber hoses, reducing shrinkage during vulcanization by 15%-25% and ensuring a precise fit with connectors.All our mica flakes meet stringent industry standards in terms of key technical indicators. The moisture content is ≤0.3%, ash content ≤0.5%, oil absorption ≤25 mL/100g, and they exhibit excellent heat resistance, remaining stable at temperatures of up to 600°C. Furthermore, our products comply fully with RoHS and REACH regulations, with heavy metal content well below global safety limits (lead ≤0.0005%, arsenic ≤0.0003%).When it comes to logistics, we prioritize the quality and integrity of our products. Our mica flakes are packaged in moisture-proof bags (25 kg/bag), featuring an inner polyethylene film and an outer kraft paper bag to prevent moisture absorption during sea transportation. We have established strong partnerships with leading shipping companies such as Maersk and COSCO, ensuring timely delivery to customers in Europe, North America, and Southeast Asia within 15-30 days.
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Mica powder for electrical appliances welding rods rubber plastics papermaking paints coatings product
Mica powder is derived from natural mica minerals (e.g., muscovite, biotite), processed via crushing and grinding to exfoliate their layered structure into fine particles. Mined globally (India, China, US), it features high dielectric strength (ideal for capacitors and electronics insulation), thermal stability (withstands 600°C+), and reflective properties. In cosmetics, ultra-fine grades create shimmer in makeup; in paints/plastics, it enhances weather resistance and mechanical strength as a reinforcing filler. Industrial uses include thermal insulation in appliances, fireproof coatings, and as a release agent in rubber manufacturing. Its chemical inertness and versatile particle sizes make it essential across electronics, construction, and personal care sectors.
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Mica ore mainly includes biotite, phlogopite, muscovite, lepidolite, sericite, chloritite, ferro lepidolite and so on, and placer is a mixed mineral of mica and quartz. Muscovite and phlogopite are the most widely used minerals in industry. Lepidolite is an important mineral raw material for extracting lithium.
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Mica ore mainly includes biotite, phlogopite, muscovite, lepidolite, sericite, chloritite, ferro lepidolite and so on, and placer is a mixed mineral of mica and quartz. Muscovite and phlogopite are the most widely used minerals in industry. Lepidolite is an important mineral raw material for extracting lithium.
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Type: mica powder, natural color mica flakes, colored mica flakes, synethic mica flakes.
Mica ore mainly includes biotite, phlogopite, muscovite, lepidolite, sericite, chloritite, ferro lepidolite and so on, and placer is a mixed mineral of mica and quartz. Muscovite and phlogopite are the most widely used minerals in industry. Lepidolite is an important mineral raw material for extracting lithium.
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Mica ore mainly includes biotite, phlogopite, muscovite, lepidolite, sericite, chloritite, ferro lepidolite and so on, and placer is a mixed mineral of mica and quartz. Muscovite and phlogopite are the most widely used minerals in industry. Lepidolite is an important mineral raw material for extracting lithium.
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Mica ore mainly includes biotite, phlogopite, muscovite, lepidolite, sericite, chloritite, ferro lepidolite and so on, and placer is a mixed mineral of mica and quartz. Muscovite and phlogopite are the most widely used minerals in industry. Lepidolite is an important mineral raw material for extracting lithium.
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Type: mica powder, natural color mica flakes
Mica ore mainly includes biotite, phlogopite, muscovite, lepidolite, sericite, chloritite, ferro lepidolite and so on, and placer is a mixed mineral of mica and quartz. Muscovite and phlogopite are the most widely used minerals in industry. Lepidolite is an important mineral raw material for extracting lithium.
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Mica ore mainly includes biotite, phlogopite, muscovite, lepidolite, sericite, chloritite, ferro lepidolite and so on, and placer is a mixed mineral of mica and quartz. Muscovite and phlogopite are the most widely used minerals in industry. Lepidolite is an important mineral raw material for extracting lithium.
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Type: mica powder, natural color mica flakes
Mica ore mainly includes biotite, phlogopite, muscovite, lepidolite, sericite, chloritite, ferro lepidolite and so on, and placer is a mixed mineral of mica and quartz. Muscovite and phlogopite are the most widely used minerals in industry. Lepidolite is an important mineral raw material for extracting lithium.
