How to improve the wettability of mineral fiber to improve the performance of composite materials?
Publish Time: 2025-01-07
As a high-performance reinforcing material, mineral fiber has a wide range of applications in the field of composite materials. However, poor wettability between mineral fiber and matrix materials often affects the overall performance of composite materials. In order to improve the performance of composite materials, it is crucial to improve the wettability of mineral fiber.
The surface of mineral fiber is usually smooth and has weak bonding with matrix materials such as resin, which will lead to a decrease in the strength and rigidity of the composite material. In order to improve the wettability of mineral fiber, the fiber surface can be treated by a variety of methods. For example, acid etching, alkali treatment or coupling agent treatment of the fiber can increase the roughness of the fiber surface, improve its chemical activity, and thus improve the bonding with the matrix material.
On the basis of fiber surface treatment, the properties of the matrix material can also be adjusted to improve wettability. For example, by changing the molecular structure of the resin, adding a compatibilizer, etc., it can better penetrate the fiber surface and form a tight bond. At the same time, controlling the wetting conditions is also an important means to improve wettability, including controlling parameters such as wetting time, temperature and pressure to ensure that the resin can fully wet the fiber.
When the wettability of mineral fiber is improved, the performance of the composite material will be significantly improved. First, the bonding force between the fiber and the matrix is enhanced, so that the composite material can better transfer and disperse the load when subjected to external force, thereby improving the strength and rigidity. Secondly, the improvement of wettability helps to reduce stress concentration and crack initiation at the interface and extend the fatigue life of the composite material. In addition, good wettability can also improve the corrosion resistance and heat resistance of the composite material, so that it can maintain stable performance in various harsh environments.
In summary, improving the wettability of mineral fiber is one of the key ways to improve the performance of composite materials. Through methods such as fiber surface treatment, adjusting the properties of the matrix material and controlling the wetting conditions, the bonding force between the mineral fiber and the matrix material can be significantly improved, thereby preparing a composite material with excellent performance.
