What are the characteristics of PTFE raw material

Update:15-10-2021
Summary:

The PTFE raw material tape is the residual deformation […]

The PTFE raw material tape is the residual deformation of the resin under the action of compression force. It is first made into a rod or strip by the push molding method, and then it is rolled on a roller press. Under the action, it is stretched into a thin strip with a certain thickness and width, and finally the squeezing aid is removed to obtain a raw material strip
PTFE raw material tape is an excellent sealing material with corrosion resistance and high temperature resistance. It can be used as a sealing material for water pipes, corrosive fluid conveying pipes, and steam pipe joints.
Nature
Chemical
Insulation: Not affected by the environment and frequency, the volume resistance can reach 1018 ohm·cm, the dielectric loss is small, and the breakdown voltage is high.
High and low temperature resistance: little effect on temperature, wide temperature range, applicable temperature -190~260℃.
Self-lubricating: It has the smallest coefficient of friction among plastics and is an ideal oil-free lubricating material.
Surface non-stickiness: known solid materials can not adhere to the surface, it is a solid material with the smallest surface energy.
Atmospheric aging resistance, radiation resistance and low permeability: long-term exposure to the atmosphere, the surface and performance remain unchanged.
Non-combustibility: The oxygen limit index is below 90.
Physics
The mechanical properties of PTFE are relatively soft. Has a very low surface energy.
In practical applications, many liquid raw material tapes are used instead of solid raw material tapes. The liquid raw material has the characteristics of high bonding strength, good sealing performance, corrosion resistance, high temperature resistance, and aging resistance in the pipeline thread sealant. Precision filter device , Fast installation, is the most advanced thread sealant.
application
It is widely used for thread sealing and locking of industrial and civil pipelines such as fire fighting, shipbuilding, natural gas, tap water, meters, air conditioners, gas pipes, oil pipes, and hydraulic pipes.