Mikrotäyteaineet

Mikrotäyteaineet, known in English as microfillers, are finely divided solid particles added to polymer matrices to enhance their properties. These materials are typically inorganic and possess a particle size in the micrometer range. Their primary function is to reinforce the polymer, improving mechanical characteristics such as tensile strength, stiffness, and hardness. The addition of microfillers can also affect other properties like thermal conductivity, electrical insulation, and abrasion resistance.

The effectiveness of a microfiller depends on several factors, including its particle size, shape, surface area, and chemical composition. Common examples of microfillers include calcium carbonate, talc, silica, clay minerals, and glass spheres. The interaction between the microfiller particles and the polymer matrix is crucial. Surface treatments are often applied to the microfiller particles to improve their compatibility and adhesion with the polymer, leading to better dispersion and a more significant enhancement of properties.

Mikrotäyteaineet are widely used across various industries. In the plastics industry, they are incorporated into thermoplastics and thermosets for applications ranging from automotive parts and construction materials to packaging and consumer goods. Their use can also lead to cost reduction by allowing for a reduction in the amount of more expensive base polymer needed. The choice of microfiller and its loading level are tailored to achieve specific performance requirements for the final product.