Among them, filling modification is a simple and effective method, which can not only maintain its advantages, but also use the compound effect to improve and overcome the defects of pure PTFE and improve its comprehensive performance.

Generally, there are four basic principles for selecting the filler: The filler is stable under sintering conditions of 380 ~ 400 cC, and is not compatible with or with PTFE The contacted metal or fluid reacts; ②The particle size is small and can be mixed evenly with PTFE powder; ③The filler does not absorb moisture and will not cluster by itself under sintering conditions; ④It can improve the mechanical strength and wear resistance of PTFE or improve Thermal conductivity, reduction of linear expansion coefficient, etc.

However, its low strength, wear resistance, creep resistance, and poor thermal conductivity have limited its wide application. The performance of the modified PTFE composite material is closely related to the type, content and molding process of the filler.

At present, in order to improve the Toaster Bag Manufacturers mechanical properties of PTFE composite materials, modification methods such as filling modification, surface modification and blending modification are usually used to meet people's requirements.PTFE is a high-molecular polymer with excellent performance, and its applications involve aerospace, petrochemical, machinery, electronics, construction, light textile and other industrial sectors. Adding different fillers to PTEF can significantly improve its tensile properties, impact properties, hardness or wear resistance

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