Isotropic rubber soft magnet is a kind of flexible composite magnetic material made of uniformly mixed ferrite magnetic powder and rubber binder through calendaring and vulcanization molding without directional magnetic field orientation treatment. Different from anisotropic flexible magnets, the magnetic powder particles of isotropic rubber soft magnets are randomly distributed in the rubber matrix, so the magnetic properties of all directions of the magnet are basically consistent, with no obvious magnetic direction difference. This product has the characteristics of ultra-soft texture, arbitrary bending, uniform omnidirectional magnetism, good processability and low cost, and is the most basic and versatile flexible magnetic material in the civilian market. The production process is simple and mature, with high production efficiency and good batch consistency, which is suitable for large-scale standardized production and personalized customized processing.

In terms of performance characteristics, isotropic rubber soft magnets have uniform and stable omnidirectional magnetic performance. The magnetic energy product is stable at 1.2–2.5 MGOe, the magnetic force of the front, back, left and right directions is consistent, there is no weak magnetic area, and the magnetic distribution of the whole plate is uniform without local magnetic deviation. The material has excellent flexibility and toughness, shore hardness is 55–70A, soft and elastic, can be arbitrarily bent, folded, rolled and twisted, no cracking, no powder falling and no demagnetization after repeated bending. The product has good ductility and stretch resistance, the elongation at break is more than 100%, and it will not break or deform under slight stretching and extrusion. The thickness of the product is diverse, ranging from 0.3mm to 8mm, and it can be made into coils, sheets, strips and special-shaped parts, with flat and smooth surface, no bubbles and no wrinkles.

In terms of environmental adaptability and practicability, isotropic rubber soft magnets have outstanding advantages. The rubber matrix has good waterproof, moisture-proof, anti-aging and anti-corrosion capabilities, can work stably in humid indoor, outdoor and ordinary corrosive environments for a long time, and is not easy to oxidize and deform. The working temperature range is -30°C to 70°C, which covers all civilian daily use environments. The product has strong weather resistance, anti-ultraviolet, anti-oxidation, no yellowing and no brittle cracking after long-term outdoor use, with a service life of more than 6 years. It is environmentally friendly and non-toxic, compliant with ROHS environmental protection standards, free of heavy metal harmful substances, safe for contact with human body, food and children, and can be widely used in daily necessities and toy products. In addition, the product has excellent processability, can be arbitrarily cut, punched, die-cut and laminated, and supports back glue, printing, color coating and other post-processing, with low processing difficulty and high customization flexibility.

Isotropic rubber soft magnets are mainly used in civilian daily life, advertising packaging, stationery toys and other low and medium magnetic demand fields. In the daily civilian field, they are made into refrigerator magnetic stickers, whiteboard writing magnetic stickers, photo wall magnetic fixing strips, door and window sealing magnetic strips, providing convenient and reusable magnetic fixing solutions for family life. In the advertising industry, they are used for car body magnetic stickers, outdoor promotional magnetic posters, store display magnetic boards, which are easy to paste and peel, no residual glue, no damage to the attachment surface. In the packaging industry, they serve as magnetic closures of gift boxes, cosmetic boxes, stationery boxes and packaging boxes, with soft texture, no damage to packaging materials and good sealing effect. In the toy and stationery industry, they are made into magnetic toys, magnetic building blocks, magnetic teaching aids and office magnetic accessories, safe and durable. In addition, they are also widely used in automotive interior sealing, furniture magnetic accessories, medical auxiliary fixing and daily hardware products. With the advantages of low price, soft texture, uniform magnetism and wide applicability, isotropic rubber soft magnets are the most popular flexible magnetic materials in the civilian market, with huge market demand and wide application prospects.