Modification Technology of Fluorine lined Valve Materials

    Fluorine lined valve It refers to a type of valve with a lining made of fluoroplastics, but currently some fluoroplastics have their own defects. Therefore, relevant scholars are studying the use of modification methods to improve the performance of these fluoroplastics and expand their application scope. Fluoroplastic modification mainly involves combining fluoroplastics with other materials to change their crystal structure or altering the chemical molecular structure of fluoroplastics through physical and chemical methods. The main methods of modification include surface modification, filling modification, blending modification, etc.
1. Surface modification. Surface modification mainly uses chemical or physical methods to replace the fluorine atoms on the surface of fluoroplastics with polar groups, improving the surface properties of the material. Surface modification methods generally include radiation grafting, chemical treatment, laser treatment, high-temperature melting, electrolytic reduction, and plasma treatment. Surface modification can effectively improve the wear resistance, superhydrophobicity, and radiation resistance of fluoroplastics, effectively expanding their application range.

2. Fill modification. Filling modification is a simple and effective method for modifying fluoroplastics. By adding fillers to the fluoroplastic matrix, the crystal structure of fluoroplastics can be changed, thereby improving and overcoming the original defects of fluoroplastics. The commonly used fillers for fluoroplastics include metals and metal oxides, inorganic materials, and organic materials. The performance of the modified material after filling is related to the type, content, and filling process of the filler. By filling modification, the hardness, thermal stability, tensile strength, and wear resistance of the material can be effectively improved, while reducing the expansion coefficient and shrinkage rate of the material.
3. Blending modification Blending modification is the process of mixing fluorine materials with one or more polymers to produce composite materials that are macroscopically uniformly distributed. The material properties after blending modification mainly depend on the properties, content, and blending process of the blended material. The thermal stability and flowability of fluoroplastics can be improved through blending modification.
Precautions for selecting fluorine lined valves