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Q. What is the recommended filling amount when using mica as a filler? A. This is actually a surprisingly common question, but there isn't a straightforward answer... Finding the right balance that maximizes the effectiveness of the filler without compromising the functionality of the resin is quite challenging. As the aspect ratio and average particle size change for different sizes, the physical properties of mica also vary slightly. For applications where you don't want any color to show, M grade (white mica) is recommended, while S grade (gold mica) is preferred if physical properties are the priority. Depending on the type of resin and its application, the grade, size, and filling amount will all change, so I would appreciate the opportunity to discuss the optimal filling amount in a meeting. Lastly, if we consider only the physical properties of mica without taking into account the type of resin or the thickness of the film, the larger the average particle size of mica, the better its physical properties tend to be, with a filling rate of 20% to 30% or more showing significant improvements in those properties. Please feel free to download the detailed information.
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basic information
【Main Physical Properties】 ■ Rigidity ■ Dimensional Stability ■ Heat Resistance ■ Damping Properties ■ Corrosion Resistance ■ Weather Resistance ■ Barrier Properties ■ Insulation Properties ■ Lubricity (Slipperiness) (Friction Properties) * We handle a variety of mica products in different sizes and grades, primarily focusing on Muscovite (S grade) and Phlogopite (M grade). Mica has good compatibility with various materials such as plastic resins, paints, rubber, films, sealing materials, and adhesives.
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Applications/Examples of results
【Examples of Use】 ■Resin ・Automotive parts ・Home appliance parts ・Office automation equipment parts ・Acoustic product parts, etc. ■Paint ・Heavy-duty anti-corrosion paint ・Exterior spray paint ・Roofing materials ■Rubber ・Automotive parts ・Home appliance parts ・Office automation equipment parts ・Industrial products ■Building materials ・Cement products ・Gypsum board ・Interior and exterior materials, etc. ■Others ・Fire extinguishing agents ・Flame-retardant paper ・Moisture-proof paper, etc. *For more details, please download the PDF or feel free to contact us.
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Company information
Our company was established in 1979 with the aim of conducting consistent research, development, manufacturing, and sales of mica, a natural resource, supported by a grant from the Ministry of International Trade and Industry for important technology research and development. Our mica product "Repco Mica" is used in various fields such as automotive parts, electrical products, precision instruments, and building materials as a unique flake filler and reinforcement material characteristic of mica. With over 40 years of knowledge and expertise in mica, please feel free to contact us for solutions to your company's challenges. 【Main Physical Properties】 ■ Rigidity ■ Dimensional stability ■ Heat resistance ■ Damping properties ■ Corrosion resistance ■ Weather resistance ■ Barrier properties ■ Insulation properties ■ Lubricity (slipperiness) (sliding properties)