What is the material of graphite fixture:
1. Flexible graphite is an ideal sealing material, commonly known as "sealing king", which has good mechanical, physical and chemical properties. Depending on the crystal shape,
2. Natural graphite can be divided into three categories: aphanitic graphite, fine crystalline graphite and flake graphite. Among them, the floatability, lubricity
3. Plasticity is superior to other types of graphite, so it has the greatest industrial value. Expanded graphite is made of natural graphite flakes.
4. Natural graphite is treated with strong oxidizing mixed acid to form the so-called interlayer compound graphite oxide. Graphite oxide decomposes when heated and releases gases such as carbon dioxide,
5. In case of instantaneous high temperature, it will rapidly decompose and expand (the expansion degree can be 100 ~ 300 times that of the original), forming a loose, soft and ductile material, namely expanded graphite,
6. Expanded graphite is called flexible graphite after pressure forming. It not only retains the characteristics of graphite, but also overcomes the shortcomings of brittle and fragile natural graphite and poor impact resistance.
7. The expanded graphite is loose, porous and curly. It is similar to caterpillars and is called worms. It has large surface area, high surface energy and strong adsorption capacity without binder,
8. Only mechanical processing can make worms adsorb and fit each other, and process them into seals of various shapes, that is, the self viscosity of expanded graphite. The larger the expansion ratio, the better the self-adhesive, and the higher the quality of the pressed seal.
