Teflon PTFE material has the smallest surface tension a […]
Teflon PTFE material has the smallest surface tension and inertness among solid materials, and does not adhere to any substances. PTFE tetrafluoroethylene material has the lowest coefficient of friction, excellent self-lubrication, and excellent resistance to high and low temperatures, which makes it widely used in anti-sticking aspects such as manufacturing non-stick pans.
In addition, if PTFE material is applied to rollers or inlays on other parts, as guide rollers, PTFE rollers, it can quickly pass films, paper, textiles, etc.; it can also be made into thin sheets such as chemical fiber molded sheets, textiles Lubricating blocks, etc. are installed on the loom to prevent the adhesion of various threads and to make PTFE special-shaped parts for mechanical equipment to prevent glue and other adhesions from being difficult to remove; and the varnished cloth made of PTFE coating and glass is heat-shrinked Covering on the substrate, etc., these applications all use the low friction coefficient and non-stick characteristics of PTFE material, which shows that the tension of the product is reduced to the lowest when the product passes, and the attached dirt is also easy to clean.
Compared with other polymers, PTFE has its unique advantages, but it also has some defects, such as poor machining performance, large linear expansion coefficient, poor creep resistance, easy cold flow, and poor wear resistance. , Molding and secondary processing are difficult and other shortcomings, so that its application is limited.
At present, the focus of domestic and foreign research on PTFE is to find appropriate methods to modify it, improve its performance to a certain extent, and expand its application range. To strengthen the application research and development of PTFE, we need to focus on modification technology research and development of new high-performance PTFE composite materials.